Motorola Computer Hardware MVME956UM2 User Manual

MVME956AC VME Chassis  
User’s Manual  
MVME956ACA/UM2  
Preface  
The MVME956AC VME Chassis User’s Manual describes the installation, configuration,  
and operation of the Model MVME956 chassis. This chassis is a member of a family of  
system enclosures that are configurable with a variety of card cage, storage drive, and AC  
power supply options. The MVME956AC is a 12-slot model designed for rack-mount or  
lab benchtop applications. The manual supplies general information on the chassis,  
instructions for its preparation and installation, and support information.  
This manual is intended for anyone who wants to design OEM systems, supply additional  
capability to an existing system, or use the equipment in a lab environment for experimental  
purposes.  
A basic knowledge of computers and digital logic is assumed.  
Technical knowledge of energy and voltage hazards present in line connected electronic  
equipment is assumed.  
To use this manual, you may need to be familiar with the publications listed in the following  
Related Documentation section.  
If any modifications are made to a MVME956AC chassis, the modifier assumes  
responsibility for radio frequency interference issues. If any payload installed in a Model  
MVME956AC system is not totally supported by Motorola, the integrator assumes  
responsibility for radio frequency interference.  
®
Motorola and the Motorola symbol are registered trademarks of Motorola, Inc.  
All other products mentioned in this document are trademarks or registered trademarks of  
their respective holders.  
© Copyright Motorola, Inc. 1997, 1998  
All Rights Reserved  
Printed in the United States of America  
October 1998  
Safety Summary  
Safety Depends On You  
The following general safety precautions must be observed during all phases of operation, service, and repair of this  
equipment. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety  
standards of design, manufacture, and intended use of the equipment. Motorola, Inc. assumes no liability for the  
customers failure to comply with these requirements.  
The safety precautions listed below represent warnings of certain dangers of which Motorola is aware. You, as the user  
of the product, should follow these warnings and all other safety precautions necessary for the safe operation of the  
equipment in your operating environment.  
Ground the Instrument.  
To minimize shock hazard, the equipment chassis and enclosure must be connected to an electrical ground. Both AC  
and DC versions of this equipment require a three-conductor power cable. A supplementary chassis ground is also  
provided. AC power cables must be plugged into an approved three-contact electrical outlet. The power jack and  
mating plug of the power cable must meet International Electrotechnical Commission (IEC) safety standards.  
Do Not Operate in an Explosive Atmosphere.  
Do not operate the equipment in the presence of flammable gases or fumes. Operation of any electrical equipment in  
such an environment constitutes a definite safety hazard.  
Keep Away From Live Circuits.  
Operating personnel must not remove equipment covers. Only Factory Authorized Service Personnel or other  
qualified maintenance personnel may remove equipment covers for internal subassembly or component replacement  
or any internal adjustment. Do not replace components with power cable connected. Under certain conditions,  
dangerous voltages may exist even with the power cable removed. To avoid injuries, always disconnect power and  
discharge circuits before touching them.  
Do Not Service or Adjust Alone.  
Do not attempt internal service or adjustment unless another person capable of rendering first aid and resuscitation is  
present.  
Use Caution When Exposing or Handling CRTs.  
Breakage of a Cathode-Ray Tube (CRT) causes a high-velocity scattering of glass fragments (implosion). To prevent  
CRT implosion, avoid rough handling or jarring of the equipment. CRTs should be handled only by qualified  
maintenance personnel using approved safety mask and gloves.  
Do Not Substitute Parts or Modify Equipment.  
Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized  
modification of the equipment. Contact your local Motorola representative for service and repair to ensure that safety  
features are maintained.  
Dangerous Procedure Warnings.  
Warnings, such as the example below, precede potentially dangerous procedures throughout this manual. Instructions  
contained in the warnings must be followed. You should also employ all other safety precautions which you deem  
necessary for the operation of the equipment in your operating environment.  
Dangerous voltages, capable of causing death, are present in  
!
this equipment. Use extreme caution when handling, testing,  
and adjusting.  
WARNING  
Regulatory Notices  
!
Changes or modifications not expressly approved by  
Motorola Computer Group could void the user’s authority to  
operate the equipment.  
WARNING  
Use only shielded cables when connecting peripherals to  
assure that appropriate radio frequency emissions compliance  
is maintained.  
FCC (U.S.)  
Both Class A (commercial) and Class B (residential) digital  
devices have the following Federal Communications  
Commission (FCC) wording on the regulatory label:  
This device complies with Part 15 of the FCC Rules.  
Operation is subject to the following two conditions: (1) this  
device may not cause harmful interference, and (2) this device  
must accept any interference received, including interference  
that may cause undesired operation.  
In addition, Class B equipment will also have an FCC ID  
number displayed such as: FCC ID: LNT6ØØADT. To  
determine the classification of your equipment, examine the  
FCC labels, which are readily visible on the exterior of the  
cabinets (usually on the back or bottom). If all labels have  
Class B ratings, the system is Class B. Any Class A label  
makes the system Class A.  
For FCC Class A  
NOTE: This equipment has been tested and found to comply  
with the limits for a Class A digital device, pursuant to part 15  
of the FCC Rules. These limits are designed to provide  
reasonable protection against harmful interference when the  
equipment is operated in a commercial environment. This  
equipment generates, uses, and can radiate radio frequency  
energy and if not installed and used in accordance with the  
instruction manual, may cause harmful interference to radio  
communications. Operation of this equipment in a residential  
area is likely to cause harmful interference, in which case the  
user will be required to correct the interference at his own  
expense.  
Industry Canada  
The classification of your system for Industry Canada can be  
determined by examining the regulatory labels, which are  
readily visible on the exterior of the cabinets (usually on the  
back or bottom). If all labels have Class B ratings, the system  
is Class B. Any Class A label makes the system Class A. The  
following wording in English or French or both, indicates the  
Classification.  
This Class A digital apparatus meets all requirements of the  
Canadian Interference-Causing Equipment Regulations.  
Cet appareil numérique de la classe * respecte toutes les  
exigences du Règlement sur le matériel brouilleur du Canada.  
CE Notice (European Community)  
Marking a system with the “  
“ symbol indicates  
compliance of that Motorola system to the EMC and Low  
Voltage directives of the European Community. A system  
with the CE marking meets or exceeds the following technical  
standards:  
EN 55022 “Limits and methods of measurement of radio  
interference characteristics of information technology  
equipment.”  
EN 50082-1 “Electromagnetic compatibility - Generic  
immunity standard Part 1: Residential, commercial, and light  
industry.”  
IEC 801-2 “Electromagnetic compatibility for industrial  
process measurement and control equipment Part 2:  
Electrostatic discharge requirements.”  
IEC 801-3 ”Electromagnetic compatibility for industrial  
process measurement and control equipment Part 3:  
Radiated electromagnetic field requirements.”  
IEC 801-4 “Electromagnetic compatibility for industrial  
process measurement and control equipment Part 4:  
Electrical fast transient/burst requirements.”  
EN 60950 “Safety of information technology equipment,  
including electrical business equipment.”  
In accordance with European Community directives, a  
“Declaration of Conformity” has been made and is on file at  
Motorola, Inc. – Computer Group, 27 Market Street,  
Maidenhead, United Kingdom, SL6 8AE.  
In addition to the above standards, this system has also met the  
requirements of the following European standards:  
EN 60555-2 “Disturbances in supply systems caused by  
household appliances and similar electrical equipment Part 2:  
Harmonics.”  
EN 60555-3 “Disturbances in supply systems caused by  
household appliances and similar electrical equipment Part 3:  
Voltage fluctuations.”  
Contents  
CHAPTER 1  
General Information  
Overview....................................................................................................................1-1  
Features......................................................................................................................1-1  
General Description ...................................................................................................1-2  
Chassis Description and Specifications ..............................................................1-3  
Power Supply Description and Specifications....................................................1-4  
Power Supply Limit Considerations............................................................1-5  
VME Bus Backplane Description and Specifications ........................................1-5  
Safety and Regulatory Compliance............................................................................1-6  
General Precautions ...................................................................................................1-7  
Operating Environment..............................................................................................1-7  
Chassis Cooling Considerations ................................................................................1-8  
Hardware Preparation ................................................................................................1-9  
Related Documentation............................................................................................1-10  
CHAPTER 2  
Chassis Mount Options  
Overview....................................................................................................................2-1  
Chassis Installation Instructions ................................................................................2-1  
Benchtop Operation ............................................................................................2-1  
Install the Desktop Cover Kit .....................................................................2-2  
Rack Mounting Option .......................................................................................2-4  
CHAPTER 3  
Operating Procedures  
Overview....................................................................................................................3-1  
Controls and Indicators ..............................................................................................3-1  
Power Control Procedure...........................................................................................3-2  
CHAPTER 4  
12-Slot VMEbus Backplane  
Overview....................................................................................................................4-1  
Physical Description ..................................................................................................4-1  
Backplane Power........................................................................................................4-1  
Backplane Bus Connectors.................................................................................4-2  
ix  
VME64x Bus Interface Signal Termination....................................................... 4-2  
Backplane Preparation............................................................................................... 4-3  
Install the Daisy-Chain Jumpers................................................................................ 4-5  
Pin Assignments................................................................................................. 4-6  
Power Monitor Connection......................................................................... 4-6  
Live Insertion .............................................................................................. 4-7  
CHAPTER 5  
Removal and Replacement Procedures  
Overview.................................................................................................................... 5-1  
Following ESD and Safety Procedures...................................................................... 5-1  
Power Supply............................................................................................................. 5-2  
Removal.............................................................................................................. 5-2  
Replacement ....................................................................................................... 5-4  
Disk and Tape Drive .................................................................................................. 5-6  
Removal.............................................................................................................. 5-6  
Replacement ....................................................................................................... 5-7  
VME64x Bus Backplane ........................................................................................... 5-9  
Removal.............................................................................................................. 5-9  
Replacement .....................................................................................................5-11  
Cooling Fan ............................................................................................................. 5-12  
Removal............................................................................................................ 5-12  
Optional Air Filter Kit .............................................................................................5-14  
Replacement .....................................................................................................5-14  
CHAPTER 6  
Support Information  
Introduction ............................................................................................................... 6-1  
Drawings/Wiring Diagram ........................................................................................ 6-1  
Parts Lists .................................................................................................................. 6-2  
x
List of Figures  
Figure 2-1. Cover Kit.................................................................................................2-3  
Figure 4-1. 12-Slot Backplane Connectors and Headers Rear View .........................4-4  
Figure 4-2. Backplane Daisy-Chain Jumper Wiring..................................................4-8  
Figure 5-1. Power Supply Removal/Replacement .....................................................5-4  
Figure 5-2. Disk/Tape Drive Removal.....................................................................5-7  
Figure 5-3. Backplane Mounting (Card File Removed) ..........................................5-10  
Figure 5-4. Cooling Fan Removal/Replacement ..................................................5-13  
Figure 6-1. MVME956AC Chassis Assembly, 1 of 2................................................6-5  
Figure 6-2. MVME956AC Chassis Assembly, 2 of 2................................................6-6  
Figure 6-3. MVME956AC Wiring Diagram..............................................................6-7  
xi  
List of Tables  
Table 1-1. MVME956AC Chassis Specifications ....................................................1-4  
Table 1-2. 12-Slot VME Bus Backplane Specifications ..........................................1-5  
Table 1-3. Hardware Preparation Items .....................................................................1-9  
Table 4-1. Power Monitor Connection .....................................................................4-6  
Table 4-2. Live Insertion Connections .......................................................................4-7  
Table 6-1. MVME956AC Chassis Parts List ...........................................................6-2  
Table 6-2. MVME956AC-AC Major Assemblies......................................................6-4  
xiii  
1General Information  
1
Overview  
This manual provides general information, hardware preparation,  
installation instructions, removal and replacement procedures for major  
assemblies, operational information, parts lists, and diagrams for the  
MVME956AC 12-slot chassis. Throughout the remainder of this manual,  
this enclosure may be referred to as the MVME956AC, or simply as the  
chassis.  
Features  
The features of the MVME956AC chassis include:  
VME board injector features in front card cage  
Board slot keying  
Internationally approved 550 watt power factor corrected, wide  
ranging power supply  
12-slot, 64-bit, VME64X-compatible backplane with +5Vdc,  
+12Vdc and -12Vdc power supplied  
Optional SCSI drive kits  
Electrostatic Discharge (ESD) hardening and Electromagnetic  
Interference (EMI) shielding  
Forced air cooling for power supply, mass storage modules, and  
VME modules  
Rear mounted card cage for 17 transition modules, connected by  
cables to rear P2 connectors or P2 paddle boards  
Lab benchtop or rack-mount operation  
Features of the 12-slot VME bus backplane include:  
1-1  
General Information  
1
Compatibility with standard VME (3-row) modules  
Compatibility with standard VME64x modules requiring only  
+5Vdc, +12Vdc, and -12Vdc backplane power and no direct P2  
transition module connections  
12 VME slots (24 sockets, 160-pin IEC 1076-4_xxx, 2.54mm  
receptacle connectors for VME modules)  
64-bit address and data (P1 and P2)  
VME64x bus and VME64X bus termination  
35 additional signal ground return  
46 additional user-defined I/O pins  
Geographical addressing  
+5Vdc, +12Vdc, and -12Vdc power supplied  
+3.3Vdc power is not supplied  
General Description  
The MVME956AC chassis is designed for OEMs and other technical  
professionals who wish to integrate individual VME module board-level  
products into a complete, compact, self-contained microcomputer system,  
including disk and/or tape drive units. This packaging design helps to best  
meet your specific performance and installation requirements. Various  
options to permit the convenient assembly of systems for custom  
installation and/or application are possible.  
The major assemblies of the MVME956AC are:  
Chassis with card cage, power supply, backplane, power switch, and  
cooling fans. Operates on 115/220 Vac input power.  
AC power supply, 550W, 115/230 Vac input (+5 Vdc, +12 Vdc, and  
-12 Vdc). Includes cooling fan and housing with cables.  
1-2  
Computer Group Literature Center Web Site  
General Description  
1
VME module backplane. Contains 12 connectors for P1 and P2 of  
VME bus.  
The basic chassis, power supply, and backplane are described in this  
manual. The optional disk drives, tape drives, and controllers are described  
in their respective manuals or reference sheets. Refer to the Related  
Documentation on page 1-10 for additional information.  
Chassis Description and Specifications  
The MVME956AC chassis is designed for industry-standard 3-row VME  
modules and VME64X modules not requiring +3.3Vdc backplane power.  
The chassis accommodates five additional peripheral drive and houses a  
VME module card cage with 12 VME bus slots. The front panel opening  
accommodates the five 5-1/4-inch, half-height SCSI peripheral devices.  
The control for the chassis is an ON/OFF power switch.When the switch  
is in the OFF position, power to the modules is removed but the primary  
side of the power supply remains energized. Power is supplied by an  
internal 550 watt wide-ranging power supply, which is mounted vertically  
toward the rear of the chassis. There is provision for 17 rear panel-mounted  
80 mm interface modules.  
Three DC-powered fans provide forced air cooling for the power supply,  
mass storage enclosure, and VME modules. Convection cooling is used for  
the rear-mounted modules.  
The rear of the chassis supports standard double-high Eurocard panels and  
80 mm modules such as MVME7XX series modules. Table 1-1 lists the  
specifications for the MVME956AC chassis and power supply. Table 1-3  
lists the specifications for the 12-slot backplane. Specifications for the  
SCSI drives and VME modules used in the MVME956AC chassis are  
given in their respective manuals or reference sheets. Refer to Related  
Documentation on page 1-10 for information.  
1-3  
General Information  
1
Table 1-1. MVME956AC Chassis Specifications  
Characteristics  
Dimensions  
Width  
(with front flange)  
(without front flange)  
Depth  
Specifications  
19.00 inches (482.6 mm)  
17.20 inches (436.8 mm)  
19.02 inches (483.1 mm)  
12.22 inches (310.4 mm)  
32 pounds (15 kg)  
Height  
Weight  
Input voltage  
Input frequency  
Input power  
Output voltages  
90-132/180-264 Vac  
47 to 63 Hz  
90-132 Vac or 180-264 Vac  
+5 Vdc @ 80A  
+12 Vdc @ 10A (16A peak)  
-12 Vdc @ 10A  
Output power  
550 Watts (max.)  
Temperature (NOTE)  
Operating  
0 degrees C to 40 degrees C  
-40 degrees C to +60 degrees C  
20% to 80% (noncondensing)  
Storage  
Relative humidity (NOTE)  
Note Temperature and humidity limits are primarily determined  
by the type of tape and disk media that you expect to install.  
Power Supply Description and Specifications  
DC power is supplied by a 550-watt wide-ranging power supply. It is  
mounted in a fan-cooled air duct assembly and installed in the rear of the  
chassis behind the disk drives. The cooling fan runs constantly when the  
power supply is plugged in.  
1-4  
Computer Group Literature Center Web Site  
 
General Description  
1
Power Supply Limit Considerations  
The MVME956AC chassis is supplied with a 550-watt, 3-output switching  
power supply. The power supply is capable of higher output currents than  
the interconnection to the backplane. As designed, the enclosure +5 Vdc  
output is rated at 60 amperes, the +12 Vdc output at 10 amperes (16 peak),  
and the -12 Vdc output at 10 amperes.  
The current rating for each individual output must not be  
exceeded, and the total power supply output power must not  
exceed 550 watts. When calculating the 5-volt current,  
remember to include the backplane termination resistors.  
!
Caution  
The system integrator must ensure that the installed peripheral  
devices and VME module set do not exceed the power supply  
rating.  
VME Bus Backplane Description and Specifications  
The MVME956AC chassis contains one 12-slot, full 64-bit VME bus  
backplane mounted to the left of the peripheral device area. The backplane  
can accommodate up to 12 VME modules. It uses all signal and power  
lines for VME bus connectors P1 and P2.  
Table 1-2. 12-Slot VME Bus Backplane Specifications  
Characteristics  
Specifications  
Power consumption  
(without device  
modules)  
5W (1.0 A max @ +5V), required by active  
termination  
Connectors  
Device sockets  
24 sockets: 160-pin IEC1076-4_xxx 2.54mm  
connectors  
Socket spacing (center-to-center): 0.8 inch  
1-5  
General Information  
1
For more detailed information on the VME bus backplane, refer to the  
VME Extensions Standard, VITA 1.1-199X, which can be found at  
Safety and Regulatory Compliance  
All systems integrated by Motorola meet the standards claimed for those  
systems with regard to electromagnetic interference (EMI), radio  
frequency interference (RFI), and overall safety. It is possible, however, to  
install circuit boards and drives in the MVME956AC enclosure that  
produce a system not in compliance with the applicable emission limits.  
Note It is the integrators responsibility to design a payload that  
meets the desired standards.  
When Motorola integrates a payload into the MVME956AC enclosure, it  
is often necessary to make changes to the payload in order for the system  
to pass RFI standards. The following is a list of conditions that in general  
must be met in order to achieve compliance with RFI standards:  
At a minimum, the chassis must be connected to earth ground  
through the safety ground wire in the power cord to meet safety and  
other requirements.  
All external I/O cables should be high-quality shielded types with  
metal shell connectors.  
Connectors on VME modules should be metal shell types,  
connected to earth ground. This is accomplished through the  
conductive panels in contact with the chassis rails.  
All VME modules should have conductive panels to ensure a good  
RF ground with the conductive chassis rails.  
Blank panels with EMI gaskets should be installed over all unused  
chassis slots to ensure there are no RF leaks in the chassis.  
1-6  
Computer Group Literature Center Web Site  
General Precautions  
1
The VME module front panel screws should be properly tightened  
for good grounding.  
For minimum RF emissions, it is essential that the foregoing conditions be  
implemented. Failure to do so could compromise the RFI compliance of  
the system.  
This product, as configured and shipped by Motorola, has been designed  
and tested for compliance with the following RFI standards and product  
safety regulations:  
Electromagnetic Compatibility: FCC class A; European CE Class A  
Safety: UL 1950; CSA C22.2/950; VDE EN 60 950; IEC 950  
It is the customers responsibility to verify compliance if the customer  
makes changes or additions to the "as-shipped" configuration.  
General Precautions  
Ensure that the air space above and below the chassis is not blocked,  
and that the inlet screens and optional air filter are clean.  
The air inlet temperature must not exceed 40 degrees Celsius. If the  
MVME956AC is installed in a rack with other chassis, be sure that  
each chassis in the rack is provided with its own supply of fresh  
cooling air. Do not use air heated by one chassis to “cool” another  
chassis.  
All unused VME module slots must be covered to prevent cooling  
air and/or RF emissions from escaping from the chassis.  
The chassis should be used only in a clean environment such as an  
office or lab.  
Operating Environment  
When using tape and disk drive units in the MVME956AC chassis observe  
the following:  
1-7  
General Information  
1
This equipment is intended for use in a relatively clean environment  
(office or lab). In some industrial environments, you may need to  
provide additional protection against airborne contaminants in order  
to assure reliable operation of the floppy disk and magnetic tape  
drives and media.  
This equipment is intended for use in an enclosure consisting of the  
front bezel together with the Motorola top panel and side panels or  
equivalent. Operating this equipment without a front bezel may  
compromise compliance with RFI and/or product safety  
regulations. It may expose the operator to electrical and mechanical  
hazards.  
Chassis Cooling Considerations  
The system integrator must ensure that all modules used in the  
!
system are properly cooled. The following information will  
help you to determine whether the cooling is adequate.  
Caution  
The MVME956AC chassis is designed for an input air temperature below  
40 degrees Celsius. Three DC-powered fans provide forced-air cooling for  
the power supply, mass storage enclosure, and VME modules. The  
direction of air flow is: in at the bottom of the chassis, past the power  
supply and VME modules, and out the top of the chassis. The 24-volt fans  
deliver 81 CFM at zero inches of water. An air filter is optional.  
The fans provide airflow sufficient for most VME modules, but some high-  
density, high-power modules may require more cooling than this enclosure  
provides. When integrating VME modules that are known to be difficult to  
cool, testing is advisable to confirm that such modules are properly cooled.  
No forced air cooling is provided for the rear-mounted modules. The rear-  
mounted modules are typically transition modules with few active  
components, and cooling is generally not required.  
1-8  
Computer Group Literature Center Web Site  
Hardware Preparation  
1
Hardware Preparation  
There are a number of items to check or tasks to perform before you apply  
power to the chassis. These items include, but are not limited to, the items  
summarized in the following table.  
Table 1-3. Hardware Preparation Items  
Item  
Location of Instructions  
VME bus backplane jumpers  
Install modules  
Chapter 4 of this manual  
Users manual(s) for the respective  
module(s)  
Install cables (as required)  
MVME956AC installation  
instructions, also other users  
manual(s) as applicable  
Chassis rack mounting  
Chapter 2 of this manual  
Jumper options on modules used in Users manual(s) for the respective  
this chassis (as required)  
module(s)  
For peripheral drives: Select  
System manual, kit instructions  
jumper options on disk drive(s)  
1-9  
General Information  
1
Related Documentation  
Document Title  
Motorola Publication  
Number  
MVME946 Desktop Cover Kit Installation  
MVME946CVR  
Instructions  
MVME946 Rack Mount Kit Installation  
Instructions  
MVME946RKMT  
MVME946 Air Filter Kit Installation Instructions  
System Manual Module Set  
MVME946AFO  
68-SYSMODULE  
The following VMEbus publications are available from the sources  
indicated.  
ANSI/IEEE Std 1014-1987 Versatile Backplane Bus:  
The Institute of Electrical and Electronics Engineers, Inc.,  
345 East 47th Street, New York, NY 10017, USA.  
VME64 Extensions Specification, VITA 1.1-199X.  
VMEbus International Trade Association,  
Vita 1.x Live Insertion for VME64x Requirements Standard, VMEbus  
1-10  
Computer Group Literature Center Web Site  
 
2Chassis Mount Options  
2
Overview  
This chapter includes the installation instructions for the MVME956AC  
chassis. Instructions on the installation of replacement assemblies are in  
Chapter 6.  
Dangerous voltages, capable of causing death are present in  
this equipment. Use extreme caution when handling, testing  
and adjusting.  
!
Warning  
Unless otherwise instructed, perform all hardware preparation  
and/or installation with power disconnected. Installing or  
removing hardware items such as modules and cables while  
power is applied may damage the equipment.  
!
Caution  
Chassis Installation Instructions  
The MVME956AC chassis can be configured for either rack mounting or  
for lab benchtop use. This section describes the steps necessary to install  
the optional desktop cover on the chassis for lab benchtop use or to  
rackmount your unit.  
Benchtop Operation  
The MVME956AC chassis can be placed on a standard table or desk for  
operation as a lab benchtop unit. For this configuration, the chassis must  
be equipped with the Motorola side panels, top panel, and disk drive cover.  
To prepare the MVME956AC for operation as a lab benchtop unit, follow  
these steps.  
2-1  
Chassis Mount Options  
Install the Desktop Cover Kit  
2
1. The top and side panels are attached with ball stud pop-on, pop-off  
catches. If the ball studs are not already installed on the chassis,  
unpack the studs and thread them into place in the holes provided in  
the top and sides of the chassis.  
2. Install the side panels by positioning the ball stud catches over the  
ball studs and pressing firmly inward until the catches engage.  
3. Install the top panel by positioning the ball stud catches over the ball  
studs and pressing downward until the catches engage.  
Be sure the chassis is resting on a strong, level table or desk, in a clean  
environment, with plenty of air space above and around the chassis. Refer  
to Chassis Cooling Considerations on page 1-8.  
2-2  
Computer Group Literature Center Web Site  
Chassis Installation Instructions  
If you desire to have an MVME956AC chassis with top and side panels  
after previously having purchased a chassis without them, order the cover  
kit (MVME946CVR) referenced in Related Documentation on page 1-10.  
2
TOP PANEL  
SIDE PANEL  
BEZEL  
SIDE PANEL  
BALL STUDS  
11819.00 9797  
Figure 2-1. Cover Kit  
2-3  
Chassis Mount Options  
Rack Mounting Option  
2
The MVME956AC can be mounted, along with other equipment, in a  
standard 19-inch RETMA (or equivalent) rack. If the chassis is equipped  
with the benchtop cover kit, you must first remove it.  
Cover Kit Removal  
1. The top and side panels are attached with ball stud pop-on, pop-off  
catches. Remove the top panel by grasping the panel at the edges  
and lifting it straight up from the chassis.  
2. Remove the side panels by firmly grasping each panel and pulling it  
straight out from the chassis.  
3. Remove the ball studs from the top and sides of the chassis.  
4. Remove the disk drive cover from the front opening.  
To rack mount the MVME956AC unit, you must use the optional slide  
mounting kit, MVME946RKMT. Be sure to observe and follow the special  
cooling requirements explained in Chapter 1.  
To rack-mount an MVME956AC chassis, follow the procedure below.  
1. Install the two chassis slide sections as shown in using the binder-  
head screws that came in the kit. The right and left sections are  
identical.  
2. Determine where you will mount the chassis in the rack and how  
much space is required for mounting. Install the rack slide rails in  
the equipment rack using the binder-head screws and barnuts  
supplied. The chassis can now be installed in the rack.  
Note: The rack slide rails (18-5/8 inches) must coincide with that of  
the chassis slide rails.  
3. Align the chassis slide sections with the two rack-mounted slide  
sections.  
4. While depressing the loc/stop buttons on the chassis slide sections,  
slide the chassis into the rack. Adjust the slide mounting hardware  
until the chassis slides in and out smoothly.  
2-4  
Computer Group Literature Center Web Site  
Chassis Installation Instructions  
5. Secure the chassis using the rear mounting bracket supplied.  
2
6. Reinstall the front bezel by aligning the pop-on/off catches on the  
back of the bezel with the ball studs on the front panel of the chassis.  
Press firmly into place.  
7. Reconnect the power cable and power-on the system.  
Implementation of this procedure may invalidate product  
safety (e.g., UL, CSA, etc.) and RFI regulatory compliance  
(FCC, VDE).  
!
Caution  
2-5  
3Operating Procedures  
3
Overview  
This chapter provides a description of the controls, indicators, and  
operating procedures for the MVME956AC chassis.  
System operation using this chassis is completely dependent on your  
choice of hardware and software. Therefore, the only operation discussed  
here is a suggested basic power on/power off procedure.  
Controls and Indicators  
The MVME956AC chassis contains one control (switch). The switch has  
an indicator (LED) that is powered by the +5 Vdc output from the power  
supply. Some of the individual modules used in the chassis may also  
contain controls and/or indicators. This manual describes only those that  
are part of the chassis. For a description of other related controls and  
indicators, refer to the documentation that came with your module(s).  
The control provided for the MVME956AC chassis is an AC power  
ON/OFF switch. With the switch in the OFF position, power to the  
modules is removed but the primary side of the power supply remains  
energized. This switch is located at the lower left front corner of the chassis  
and provides a convenient means of powering the chassis up and down.  
3-1  
Operating Procedures  
Power Control Procedure  
A suggested power-on procedure for the chassis is as follows:  
3
1. Ensure that all modules and cabling are properly configured and  
installed. Also check that all required external cabling (to  
peripherals) is correctly installed.  
2. Plug in the AC line cord (at the rear of the chassis) and connect the  
cord to an AC power source.  
3. Set the power switch at the front of the chassis to (ON). The power  
supply cycles up and the cooling fans immediately come on.  
4. Power up any peripheral equipment interfaced to the chassis that has  
its own power on/off switch.  
A suggested power-off sequence for the chassis is as follows:  
Note Ensure that proper software shutdown procedures have been  
executed before you continue.  
1. Power down any peripheral equipment interfaced to the chassis that  
has its own power on/off switch.  
2. Set the power switch to OFF. The power supply cycles down, and  
the cooling fans stop running. For the AC chassis only, the power  
supply fan will continue to run.  
3-2  
Computer Group Literature Center Web Site  
412-Slot VMEbus Backplane  
4
Overview  
This chapter provides a physical and electrical description of the 12-slot  
VME bus backplane used in the MVME956AC chassis. Refer to Chapter  
1 for features and specifications of the backplane. Refer to Chapter 6 for  
removal and replacement procedures.  
Physical Description  
The backplane was designed to accommodate VME modules and disk  
drive units. It accommodates up to 12 double-high user VME modules  
containing both P1 and P2 connectors. The backplane is fully assembled  
with connectors and terminators. It contains:  
12 connectors on the top row to receive connector P1 of the VME  
modules  
12 connectors on the bottom row to receive VME module expansion  
connector P2  
Backplane Power  
VME modules that plug into the backplane require voltages of +5 Vdc,  
+12 Vdc, and -12 Vdc for operation. The MVME956AC chassis contains  
a power supply and wiring that provide these voltages to the backplane.  
The power connectors characteristics and the number and arrangement of  
their pins are summarized in Figure 4-1 on page 4-4.  
4-1  
12-Slot VMEbus Backplane  
Backplane Bus Connectors  
All rows of J101 through J112 (Z, A, B, C, D) are interconnected across all  
12 slots, which provides the required signals for A24/D16 operation.  
The center row (B) of J201 through J212 is interconnected across all 12  
slots, which provides the required signals for extended operation  
(A32/D32).  
4
Rows A and C of J201 through J212 are not interconnected, but are  
available for I/O functions or expansion bus operation.  
VME64x Bus Interface Signal Termination  
Signal lines are terminated with active termination. For further information  
on bus termination and VME64x bus backplane specifications, refer to the  
VME64 Extensions Specification, VITA 1.1-199x.  
4-2  
Computer Group Literature Center Web Site  
Backplane Preparation  
Backplane Preparation  
The chassis is shipped from the factory with the backplane fully equipped  
with sockets (VME64X bus connectors), power connectors, and bus  
terminator resistor networks. No special preparation or preassembly is  
required prior to use.  
4
You must configure the VME64X bus daisy-chain jumpers on the rear  
(wire side) of the backplane. Refer to VITA 1.x Live Insertion for VME64x  
requirements standard for more electrical detail and information on daisy-  
chain jumpering.  
Note Backplane daisy-chain jumpers normally are shipped with  
the chassis. If necessary, additional jumpers can be ordered  
from Motorola.  
4-3  
12-Slot VMEbus Backplane  
- V2  
PB1  
- V1  
PB2  
+ V2  
PB3  
+ V1  
PB4  
+3. 3V  
PB5  
+3. 3V  
PB6  
+3. 3V  
PB7  
+3. 3V  
PB8  
Row 1  
J1  
J3  
J2  
J101  
J112  
J111  
J110  
J109  
J108  
J107  
J106  
J105  
J104  
J103  
J102  
4
+5V  
Row 2  
Row 3  
GROUND  
J212 J211  
J210  
J209  
J208  
J207  
J206  
J205  
J204  
J203  
J202 J201  
VR2  
Row 4  
+3. 3V  
PB27  
+3. 3V  
PB28  
GND  
PB29  
GND  
PB30  
GND  
PB31  
GND  
PB32  
+5V  
PB33  
+5V  
PB34  
+5V  
PB35  
VR1  
11864.00 9709  
Figure 4-1. 12-Slot Backplane Connectors and Headers  
Rear View  
4-4  
Computer Group Literature Center Web Site  
 
Install the Daisy-Chain Jumpers  
Install the Daisy-Chain Jumpers  
All daisy-chain lines of the VME64x bus can be separately bypassed with  
removable shorting jumpers on every connector socket. Shorting the input  
to the output of the daisy-chain signals is required if the daisy-chains are  
in use, and if a VME64x module design does not provide for the  
propagation of the daisy-chain.  
4
For instance, if a backplane slot contains a device module designed for  
daisy-chain signal propagation, no jumpers are required on the jumper pins  
for that slot. However, all empty slots, and slots containing modules  
without this capability, must have daisy-chain jumpers installed to provide  
propagation of these signals.  
Daisy-chain bypass jumper areas are provided on the rear side of the  
backplane. For an illustration of the backplane daisy-chain jumper wiring,  
see Figure 4-2 on page 4-8.  
The following procedure is suggested for installing the jumpers:  
1. Attach an ESD strap to your wrist. Attach the other end of the ESD  
strap to the chassis as a ground. The ESD strap must be secured to  
your wrist and to ground throughout the procedure.  
2. Perform an operating system shutdown. Turn the AC or DC power  
off and remove the AC cord or DC power lines from the system.  
3. At the rear of the backplane, select the row(s) of header pins that  
require jumpers. Any backplane slot that will not be occupied by a  
VME64x module requires jumpers on the rear backplane pins to  
propagate the Bus Grant (BG) and Interrupt Acknowledge (IACK)  
signals to the next VME64x module slot. See Figure 4-1 on page 4-4  
and Table 4-2 on page 4-7.  
For example: If a VME64x module is used in all slots except slots  
J103 and J106, jumpers must be installed on the BG and IACK pins  
associated with those slots. (The pins that must be jumpered are the  
ones located immediately to the left of the module slot, J4 through  
J14, depending on the slot, when viewed from the rear of the  
backplane.) In this case, the following pairs of header pins would  
require jumpers:  
4-5  
12-Slot VMEbus Backplane  
– Row of pins, left side of slot J103 - BG0, BG1, ...  
– Row of pins, left side of slot J106 - BG0, BG1, ...  
Carefully align the jumper(s) on the correct pair of pins to be  
jumpered and gently push until the top of the jumper is flush with  
the top of the pins.  
4
4. Continue in this fashion, placing jumpers on all pairs of pins for  
each backplane slot that will not be occupied by a VME64x module.  
Pin Assignments  
Power Monitor Connection  
Connectors J1 and J3 provide for the power monitor signals ACFAIL,  
SYSFAIL and SYSRESET. They have the following pinouts.  
Table 4-1. Power Monitor Connection  
Pin Assignment for J1 Connector  
Pin Assignment for J3 Connector  
J1-1  
J1-2  
J1-3  
J1-4  
J1-5  
J1-6  
J1-7  
J1-8  
J1-9  
J1-10  
GND  
NC  
J3-1  
J3-2  
J3-3  
J3-4  
ACFAIL  
SYSFAIL  
SYSRST  
GND  
SYSRST  
NC  
SYSFAIL  
NC  
ACFAIL  
NC  
+5V  
NC  
For the location of these connectors, see Figure 4-1 on page 4-4.  
4-6  
Computer Group Literature Center Web Site  
Install the Daisy-Chain Jumpers  
Live Insertion  
Sockets J4-J14 allow the daisy-chained bus grant arbitration and interrupt  
priority resolution processes to continue unaffected during live insertion or  
removal. These sockets, in conjunction with the headers for bus grant  
signal jumpers and the headers for IACK signal jumpers can be used with  
a user-supplied daisy-chain switch module. This switch module  
incorporates the backplane daisy-chain bypass circuits.  
4
Table 4-2. Live Insertion Connections  
Sockets J4 through J14  
Pin 1  
Pin 2  
Pin 3  
+5V  
LI/O  
GND  
NOTE: All jumper pins in slots that use the live insertion must be  
removed before installing a user-supplied daisy chain switch module.  
Header J2 can be used to monitor IACK signal on both pin 1 and pin 2.  
For further information, refer to the VITA 1.x Live Insertion for VME64x  
requirements standard.  
4-7  
 
12-Slot VMEbus Backplane  
D32  
C32  
B32  
A32  
Z32  
D1  
C1  
B1  
A1  
Z1  
4
D32  
C32  
B32  
A32  
Z32  
D1  
C1  
B1  
A1  
Z1  
D1  
C1  
B1  
A1  
Z1  
D32  
C32  
B32  
A32  
Z32  
D1  
C1  
B1  
A1  
Z1  
D32  
C32  
B32  
A32  
Z32  
Figure 4-2. Backplane Daisy-Chain Jumper Wiring  
4-8  
Computer Group Literature Center Web Site  
 
5Removal and Replacement  
Procedures  
5
Overview  
This chapter provides recommended procedures for the removal and  
replacement of MVME956AC chassis major assemblies. For  
identification and location of the assemblies and parts mentioned in these  
procedures, refer to the drawings and parts lists in Chapter 7.  
The removal/replacement procedures are organized and presented in the  
following order:  
Power Supply  
Disk and Tape Drive  
VME64x Bus Backplane  
Cooling Fan(s)  
Optional Air Filter Kit  
Following ESD and Safety Procedures  
Use ESD  
Motorola strongly recommends that you use an antistatic wrist strap and a  
conductive foam pad when installing or upgrading the system. Electronic  
components, such as disk drives, computer boards, and memory modules,  
can be extremely sensitive to ESD. After removing the component from  
the system or its protective wrapper, place the component flat on a  
grounded, static-free surface, and in the case of a board, component-side  
Wrist Strap  
up. Do not slide the component over any surface.  
If an ESD station is not available, you can avoid damage resulting from  
ESD by wearing an antistatic wrist strap (available at electronics stores)  
that is attached to an unpainted metal part of the system chassis.  
5-1  
Removal and Replacement Procedures  
Turn the system’s power off before you perform these procedures. Failure to  
!
turn the power off before opening the system can result in personal injury or  
equipment damage. Hazardous voltage, current, and energy levels are present  
in this product. Power switch terminals can have hazardous voltages present  
even when the power switch is off. Do not operate the system with the cover  
removed. Always replace the cover before turning on the system.  
Warning  
Prior to performing any of the following installation or removal  
procedures, follow these steps.  
5
1. Attach an ESD strap to your wrist. Attach the other end of the ESD  
strap to the chassis as a ground. The ESD strap must be secured to  
your wrist and to ground throughout the procedure.  
2. Perform an operating system shutdown. Turn the AC or DC power  
off and remove the AC cord or DC power lines from the system.  
Power Supply  
The suggested procedure for the removal and replacement of the power  
supply assembly is as follows:  
Removal of the power supply provides access to high  
voltages. Ensure the power cord is removed from the power  
supply. Allow one minute for the capacitors in the power  
supply to discharge.  
!
Warning  
Removal  
1. Turn the power OFF to all equipment and disconnect the power  
cable from the AC power source.  
2. If the MVME956AC chassis is rack mounted, slide it from the rack,  
or if it is a lab benchtop unit, remove the top panel and right side  
panel.  
5-2  
Computer Group Literature Center Web Site  
 
Power Supply  
3. Remove the screws holding the top cover to the chassis and remove  
the top cover.  
4. Remove the power supply mounting screw from the right side of the  
chassis. Remove the additional screws from the back of the chassis.  
5. Disconnect the cable assemblies from the power supply or from the  
backplane, if access to the power supply connections is difficult.  
6. Disconnect the +5V, +12V, -12V, and RTN wires from the  
connections on the power supply.  
5
7. Slide the power supply assembly vertically up and out of the chassis.  
5-3  
       
Removal and Replacement Procedures  
5
Figure 5-1. Power Supply Removal/Replacement  
Replacement  
To replace the power supply assembly or to install an exchanged assembly,  
follow these procedures.  
1. Slide the power supply assembly vertically back into the chassis.  
2. Reconnect the +5V, +12V, -12V, and RTN wires disconnected in  
Step 6.  
5-4  
Computer Group Literature Center Web Site  
Power Supply  
3. Reconnect the cable assemblies removed in Step 5 above to the  
power supply or backplane.  
4. Reinstall the power supply mounting screw from the side of the  
chassis. Reinstall the screws you removed from the back of the  
chassis in Step 4 above.  
5. Replace the chassis’ top cover with the screws removed in Step 3  
above.  
6. Slide the MVME956AC chassis back into its rack mounting or  
reinstall the top and side panel on your lab benchtop unit.  
5
5-5  
Removal and Replacement Procedures  
Disk and Tape Drive  
To remove and replace disk and/or tape drives, follow these procedures.  
Removal  
1. Turn the power OFF to all equipment and disconnect the power  
cable from the AC power source.  
5
2. Slide the MVME956AC chassis out from its rack mounting remove  
the top panel and the side panel nearest the drives.  
3. Remove the front bezel.  
4. Loosen the screws that engage the keyhole slots in the right side  
access cover. Lift the cover up and off the screws.  
5. Remove the screws on either side of the drive and partially pull the  
drive out of the chassis. Disconnect the data and power cables.  
Remove the drive from the chassis.  
6. Remove the screws connecting the drive mount bracket to the drive.  
Note: If this is a permanent removal, ensure that the remaining drive  
identifications are correct and the terminating resistor is properly  
installed.  
7. If the drive is to be immediately replaced, go on to the replacement  
procedure at this point.  
8. Position the side access cover on the screws to engage the keyhole  
slots properly. The washers must be on the outside of the cover.  
9. When the screws have properly engaged the keyhole slots, slide the  
cover down and tighten the screws.  
10. Replace the front bezel.  
11. Slide the MVME956AC chassis back into its rack mounting or  
replace the side panel and the top panel to your lab benchtop unit.  
5-6  
Computer Group Literature Center Web Site  
 
Disk and Tape Drive  
5
11823.00 9708  
Figure 5-2. Disk/Tape Drive Removal  
Replacement  
1. Follow the replacement procedure in the installation instructions  
that came with your drive.  
Note: Use the short (1/4 inch long) screws to attach the brackets to  
the drive. The longer screws may damage the drives. Ensure that all  
drives are properly identified and that the terminating resistor is  
installed or removed as applicable.  
2. Reconnect the power and data cables.  
3. Position the side access cover on the screws to engage the keyhole  
slots properly. The washers must be on the outside of the cover.  
4. When the screws have properly engaged the keyhole slots, slide the  
cover down and tighten the screws.  
5-7  
Removal and Replacement Procedures  
5. Replace the front bezel.  
6. Slide the MVME956AC chassis back into its rack mounting or  
replace the side panel and the top panel to your lab benchtop unit.  
To reset the jumper addresses, refer to the installation instructions that  
came with your drive.  
5
5-8  
Computer Group Literature Center Web Site  
VME64x Bus Backplane  
VME64x Bus Backplane  
To remove or replace the backplane used in the MVME956AC chassis,  
follow these procedures.  
Removal  
1. Turn the power OFF to all equipment and disconnect the power  
cable from the AC power source.  
5
2. Remove all external cabling connected to modules installed in the  
chassis. Then remove all modules installed in the chassis.  
3. Slide the MVME956AC chassis out from its rack mounting or  
remove the top panel of your lab benchtop unit.  
4. Remove the screws holding the top cover to the chassis and lift off  
the top cover.  
5. For better access to the backplane, you may remove the rear card file  
subassembly from the rear of the chassis by removing the screws on  
the left and right sides of the card file.  
6. Remove all internal cables connected at the rear of the backplane.  
7. Remove all power wires from the rear of the backplane.  
Note: Mark the wire locations carefully so they can be correctly  
reinstalled. Incorrect connection of these wires can cause damage to  
the equipment.  
8. Disconnect the bus bar’s ground and +5V by removing the screws  
that attach it to the backplane.  
9. Disconnect the stiffener bar from the chassis by removing the two  
screws located on the left side of the chassis. Then, remove the two  
screws on the right side of the chassis by accessing through the drive  
cable access panel.  
10. Loosen and remove the two rows of screws that secure the  
backplane to the chassis frame members. Then remove the  
backplane.  
5-9  
                 
Removal and Replacement Procedures  
11. Now remove the stiffener from the backplane by removing the  
screws from the front of the backplane. Note that the adhesive  
associated with the insulating tape on the stiffener may make the  
removal of the stiffener from the backplane somewhat difficult.  
Take caution to prevent damage to the backplane when prying the  
stiffener off.  
5
11869.00 9710  
Figure 5-3. Backplane Mounting (Card File Removed)  
5-10  
Computer Group Literature Center Web Site  
 
VME64x Bus Backplane  
Replacement  
1. Attach the stiffener to the backplane with the screws removed in  
Step 11 above.  
2. Position the backplane with the J1 and J2 connectors toward the  
front of the chassis.  
3. Attach the backplane to the chassis frame members with the screws  
removed in Step 10 above.  
5
4. Attach the ends of the stiffener to the chassis using the screws  
removed in Step 9 above.  
5. Attach the ground bus bar to the backplane with the screws removed  
in Step 8 above.  
6. Connect all power wires removed in Step 7 above.  
7. Connect all cables removed in Step 6 above to the rear of the  
backplane.  
8. Slide the card file back into position and attach with the screws  
removed in Step 5.  
9. Install the modules removed in Step 2 above.  
10. Replace the top cover of the chassis with the screws removed in Step  
4 above.  
11. Slide the MVME956AC chassis back into its rack mounting or  
reinstall the top panel on your lab benchtop unit.  
12. Connect all external cabling removed in Step 2 above.  
5-11  
Removal and Replacement Procedures  
Cooling Fan  
To remove or replace one or more of the chassis cooling fans, follow these  
procedures.  
Removal  
1. Turn the power OFF to all equipment and disconnect the power  
cable from the AC power source.  
5
2. Slide the MVME956AC chassis out from its rack mounting or  
remove the top panel and side panels of your lab benchtop unit.  
3. Remove the front bezel.  
Note: Refer to Figure 7-1 on page 7-5 and Table 7-2 on page 7-4 for  
parts identification and location.  
4. At the left and right side of the chassis, remove the three screws  
along each side of the base which hold the hinged fan tray and air  
filter door in the chassis.  
5. If the MVME956AC is not mounted in a rack, lay the unit on one  
side.  
6. Remove the screws that keep the fan tray and air filter door secured.  
7. Swing the fan tray and air filter door open.  
8. Depending on the fan you are replacing, unplug the appropriate fan  
wire connector from its mating connector.  
See the wiring diagram in Figure 7-3 on page 7-7.  
9. Using a nut driver, remove the nuts and screws that secure the fan to  
the tray.  
10. Remove the fan.  
5-12  
Computer Group Literature Center Web Site  
       
Cooling Fan  
5
Figure 5-4. Cooling Fan Removal/Replacement  
5-13  
Removal and Replacement Procedures  
Optional Air Filter Kit  
If you are using the optional air filter (MVME946AFO) and wish to  
replace it, refer to Related Documentation on page 1-10 for information on  
Replacement  
1. Attach the new fan to the fan tray with the screws removed in Step  
9 above.  
5
2. Plug the appropriate fan wire connector into its mating connector.  
3. Rotate the fan tray and air filter door back into place and secure  
them with the screws removed in Step 4 and Step 6 of the removal  
procedure. Set the unit upright if it is not mounted in a rack.  
4. Reinstall the front bezel.  
5. Slide the MVME956AC chassis back into its rack mounting or  
reinstall the top panel and side panels on your lab benchtop unit.  
5-14  
Computer Group Literature Center Web Site  
 
6Support Information  
6
Introduction  
This chapter provides parts lists, wiring diagram, and assembly drawings  
for the MVME956AC chassis. For information concerning drawings and  
parts lists for power supplies and mass storage units used in this chassis,  
refer to their respective manuals or reference sheets.  
Drawings/Wiring Diagram  
Chassis assembly drawings for the MVME956AC chassis are provided in  
this chapter. A chassis wiring diagram is included as part of the main  
assembly drawing of the chassis. These drawings represent the latest  
design at the time of printing. Occasionally, minor component changes are  
made at the factory. Therefore, when replacing defective components or  
parts, always use the same value as the defective part, even though the  
diagram or drawing may indicate a different value or type.  
6-1  
Support Information  
Parts Lists  
Parts lists are provided for the MVME956 chassis major assemblies. This  
list reflects the latest issue of hardware at the time of printing. The parts  
list for the main chassis is provided below. The parts list for the major  
assemblies is in Table 6-2 on page 6-4. The main assembly parts location  
is illustrated in Figure 6-1 on page 6-5  
.
Table 6-1. MVME956AC Chassis Parts List  
COMPONENT  
27-W5328C01x  
01-W1631B02x  
01-W2030E01x  
01-W2287D01x  
01NW9804E44  
07-W5215C01x  
07-W5224C01x  
07-W5225C01x  
07-W5329C01x  
07-W6858B01x  
07-W5331C01x  
07-W6907B01x  
07NW9502A96  
30-W2285D02x  
30-W2297D02x  
30-W2295D03x  
30-W2296D03x  
31-W5330C01x  
33-W6414B01x  
33-W4120C01x  
33-W6862B02x  
64-W4211B01x  
DESCRIPTION  
Chassis assembly  
6
Bezel assembly, 956  
AC power supply  
Assy fan, 24V Cholla+  
Backplane assy, 1 2-slot, VME ext  
Access cover, left side  
Access cover, right side  
Card cage  
Cover, 956  
SCSI cable cover  
Stiffener, 956 motherboard  
Fan guard, Cholla+  
Guard, 20x20mm, SW  
Power cable harness assembly  
DC harness,+2V MNFR.  
Cable assembly, switch/enable, AC unit  
Harness assembly, DC harness/enable  
Bus bar, 956 motherboard  
Voltage warning label  
Label enclosure, US  
Label enclosure, universal  
BDL, 1 wide  
6-2  
Computer Group Literature Center Web Site  
Parts Lists  
Table 6-1. MVME956AC Chassis Parts List (Continued)  
COMPONENT  
64-W4727C01x  
13-W6275B01x  
42NW9401A80  
42NW9401B28  
42NW9401B33  
42NW9401B35  
75NW9402A32  
29NW9805A83  
29NW9805B17  
29NW9805B34  
29NW9805B38  
04NW9005A60  
03NW9004B48  
03SW990F608  
03SW990F012  
03SW990F604  
03SW990F606  
03SW990F626  
03SW990F806  
03SW991F604  
03SW993D212  
02SW995E005  
02SW999E002  
DESCRIPTION  
Front panel blanks  
Brk, mld dr flr  
Mount, push cable tie  
Tywrap, nylon,L3-7/8,B3/4  
Retainer, tywrap, self-adhesive  
Tywrap, nylon, L7-3/8,B1-7/8  
Foot, round  
Lug, quick connect, .250 w/blde  
Jumper, insulated shorting  
Terminator, .187"X.02" quick connect  
Lug, quick connect, .187" w/blde  
Flat washer, FLT, #10  
6
Captive Screw, m2.5  
Sem, Phillips  
Sem, Phillips panhead, 10-32X3/4"  
Sem, Phillips panhead, 6-32X1/4"  
Sem, Phillips panhead, 6-32X3/8"  
Sem, Phillips, 6-32X1-5/8"  
Sem, Phillips panhead, 8-32X3/8"  
Screw, Phillips flathead, 6-32X1/4"  
Screw, Phfil, M2.5X.45X 12SCYI  
Nut, hex 10-32  
Nut, hex 6-32  
6-3  
Support Information  
Table 6-2. MVME956AC-AC Major Assemblies  
Model  
Part  
Number  
Common Description  
Name  
MVME956-  
AC  
Chassis  
assy  
Chassis with card cage, power  
supply, backplane, power switch,  
and cooling fans. Operates on  
115/220 Vac input power.  
---  
---  
01-  
W2030E01X  
Power  
supply  
Power supply, 550W, 115/230 Vac  
input (+5 Vdc, +12 Vdc, and -12  
Vdc). Includes cooling fan and  
housing with cables.  
6
01-  
NW9804E44  
Backplane VMEmodule backplane. Contains  
12 connectors for P1 and P2 of  
VME bus.  
6-4  
Computer Group Literature Center Web Site  
 
Parts Lists  
Power Supply  
Assembly  
Voltage Warning  
Label  
Top Cover  
6
Stiffener  
PWB Assy.  
12-slot  
Front Panel.  
blank  
Cable Assy. DC  
harness/enable  
Card Cage  
Chassis  
Assembly  
Access Cover  
Left Side  
SCSI Cable Cover  
BDL. 1 wide  
Cable Assy  
Switch/Enable  
Access Cover  
Right Side  
Fan Assembly  
Foot  
Bezel Assembly  
11877.00 9710  
Figure 6-1. MVME956AC Chassis Assembly, 1 of 2  
6-5  
 
Support Information  
Chassis Top Cover  
Access Cover  
Right Side  
6
AIR FLOW  
Fan Assembly  
Filter Door  
Fan & Filter Frame  
Fan Guard  
Optional  
Air Filter  
11876.00 9710  
Figure 6-2. MVME956AC Chassis Assembly, 2 of 2  
6-6  
Computer Group Literature Center Web Site  
Parts Lists  
ORG/+12V  
BLK/GND  
RED/+5V  
BLK/GND  
TO DRIVES  
Row 1  
Row 2  
PB  
8
Row 3  
PB  
7
Row 4  
PB  
35  
PB  
6
+5V  
PB  
34  
PB  
5
FAN  
FAN  
FAN  
J11-A P11  
PB  
33  
+5V  
PB  
4
GND  
PB  
32  
FAN  
PB  
3
6
GND  
PB  
31  
J11-B  
P11  
POWER SUPPLY  
PB  
2
J1  
PB  
+12V  
RED  
NC  
PB  
30  
11  
GND  
PB  
1
PB  
11  
PB  
10  
WHT  
-12V  
PB  
29  
GND  
BLK/WHT  
RED/WHT  
BLK  
PB  
19  
J11-C P11  
PB  
9
PB  
28  
PB  
18  
RET  
RET +5V  
-12V  
+12V  
PB  
27  
VIO  
ORN  
T2  
RED  
T1  
BLK  
RED / WHT  
BLK / WHT  
RED / WHT  
BLK / WHT  
FRONT PNL SWITCH  
SIG RTN  
BLK  
INHB  
PWR GD/LED DRV  
WHT  
RED  
J14  
ASSY. POWER  
SUPPLY  
01-W2030E01A  
2115 9710  
Figure 6-3. MVME956AC Wiring Diagram  
6-7  
Index  
major assemblies 1-2  
operating environment 1-8  
power supply 1-3  
A
A24/D16 operation 4-2  
A32/D32 operation 4-2  
ACFAIL 4-6  
regulatories 1-6  
setup precautions 1-7  
specifications 1-3  
use and purpose 1-2  
air cooling 1-3, 1-8  
air filter door 5-14  
air filter, optional 1-8  
assemblies  
chassis assemblies, removal and replacement  
5-1  
backplane 1-2  
control switch, location 3-1  
cooling requirements 1-8  
cover kit, installation 2-2  
cover kit, removal 2-4  
chassis 1-2  
power supply 1-2  
assembly drawings 6-1  
B
D
backplane  
d SYSRES 4-6  
bus connectors 4-2  
physical description 4-1  
power output 4-1  
preparation 4-3  
daisy-chain  
configure jumpers 4-3  
install jumpers 4-5  
jumper bypass 4-5  
jumper wiring 4-8  
jumpering 4-5  
backplane description 1-5  
backplane power 1-3  
benchtop cover kit, ordering 2-3  
BG pins 4-5  
shorting the input to output 4-5  
signal propagation 4-5  
switch module 4-7  
drive brackets, install 5-7  
drives, optional 1-3  
bus termination 4-2  
C
chassis  
components 1-2  
controls and indicators 3-1  
cooling 1-8  
documentation 1-10  
features 1-1  
E
ESD procedures 5-1  
Eurocard panels 1-3  
expansion bus 4-2  
extended operation 4-2  
installing 2-1  
IN-1  
Index  
safety 5-1  
to rack mount 2-4  
publications, related 1-10  
F
front panel, description 1-3  
H
R
hardware issue 6-2  
hardware preparation 1-9  
rack mount, slide mounting kit 2-4  
remove/replace AC power supply 5-2 to 5-5  
remove/replace backplane 5-9 to 5-11  
remove/replace cooling fan 5-12 to 5-14  
remove/replace drives 5-6 to 5-8  
RF emissions, precautions 1-7  
RFI compliance 1-7, 1-8  
I
I/O functions, backplane connectors 4-2  
IACK pins 4-5  
install drive brackets 5-7  
installation instructions 2-1  
RFI standard 1-6  
L
live insertion 4-7  
S
safety procedures 5-1  
SCSI drive specifications 1-3  
setting up the chassis 1-7  
signal line termination 4-2  
SYSFAI 4-6  
M
manual overview 1-1  
module support 1-3  
mounting, benchtop 2-1  
mounting, rack 2-4  
system operation 3-1  
system shutdown 5-2  
O
operating environment 1-8  
ordering jumpers 4-3  
overview of manual 1-1  
T
temperature requirements 1-7  
terminating signal lines 4-2  
P
U
parts list  
using tape and disk drive units 1-7  
chassis assemblies 6-2  
for subassemblies 6-1  
main assembly 6-2  
pin assignments 4-6  
power monitor connections 4-6  
power supply  
V
VME modules and backplane 4-1  
VME64x requirements standard 4-3  
VMEbus backplane  
description 1-5  
description 1-2, 1-4  
limits 1-4  
preparation of backplane 4-3  
procedures  
VMEmodule specifications 1-3  
voltage requirements, backplane 4-1  
I
W
N
D
E
X
wiring diagram 6-1  
benchtop operation 2-1  
install jumpers 4-5  
power control 3-2  
power-off 3-2  
power-on 3-1  
IN-2  
Computer Group Literature Center Web Site  

IOGear GIC704SR5W6 User Manual
JVC AV 32S585 User Manual
Logitech Wireless All in One Keyboard TK820 User Manual
Maytag MEC4430AAW User Manual
Moffat Bakbar E31 User Manual
NEC Electronics America Computer Monitor LCD2090UXI User Manual
Panasonic Cordless Telephone KX TC1703PW User Manual
Panasonic WORKIO DP 4530 User Manual
Philips 42HFL5580 User Manual
Philips 221E User Manual