Bose Network Card 802c User Manual

®
®
802C System Controller  
Original and SMD Version  
Units with serial numbers beginning with 100000 are the original 802C's.  
Units with serial numbers beginning with 200000 are the new SMD 802C's.  
©1997 Bose Corporation  
Service Manual  
Part Number 129292 REV 03  
1
Download from Www.Somanuals.com. All Manuals Search And Download.  
SAFETY INFORMATION  
1. Parts that have special safety characteristics are identified by the  
symbol on  
schematics or by special notes on the parts list. Use only replacement parts that  
have critical characteristics recommended by the manufacturer.  
2. Make leakage current or resistance measurements to determine that exposed  
parts are acceptably insulated from the supply circuit before returning the unit  
to the customer. Use the following checks to perform these measurements:  
A. Leakage Current Hot Check-With the unit completely reassembled, plug  
the AC line cord directly into a 120V AC outlet. (Do not use an isolation  
transformer during this test.) Use a leakage current tester or a metering  
system that complies with American National Standards Institute (ANSI)  
C101.1 “Leakage Current for Appliances” and Underwriters Laboratories  
(UL) 1492 (71). With the unit AC switch first in the ON position, then in the  
OFF position, measure from a known earth ground (metal water pipe,  
conduit, etc.) to all exposed metal parts of the unit (antennas, handle bracket,  
metal cabinet, screwheads, metallic overlays, control shafts, etc.), especially  
any exposed metal parts that offer an electrical return path to the chassis.  
Any current measured must not exceed 0.5 milliamp. Reverse the unit power  
cord plug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN  
THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZ-  
ARD THAT MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO  
THE CUSTOMER.  
B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and  
connect a jumper wire between the two prongs of the plug. (2) Turn on the  
power switch of the unit. (3) Measure the resistance with an ohmmeter be-  
tween the jumpered AC plug and each exposed metallic cabinet part on the  
unit. When the exposed metallic part has a return path to the chassis, the  
reading should be between 1 and 5.2 Megohms. When there is no return path  
to the chassis, the reading must be “infinite”. If it is not within the limits specified,  
there is the possibility of a shock hazard, and the unit must be repaired and re-  
checked before it is returned to the customer.  
PROPRIETARY INFORMATION  
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF  
BOSE® CORPORATION WHICH IS BEING FURNISHED ONLY FOR  
THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT  
BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE  
BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED  
FOR ANY OTHER PURPOSE.  
3
Download from Www.Somanuals.com. All Manuals Search And Download.  
ELECTROSTATIC DISCHARGE SENSITIVE (ESDS)  
DEVICE HANDLING  
This unit contains ESDS devices. We recommend the following precautions when repairing,  
replacing or transporting ESDS devices:  
• Perform work at an electrically grounded work station.  
• Wear wrist straps that connect to the station or heel straps that connect to conductive floor  
mats.  
• Avoid touching the leads or contacts of ESDS devices or PC boards even if properly  
grounded. Handle boards by the edges only.  
• Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert unpro-  
tected devices into materials such as plastic, polystyrene foam, clear plastic bags, bubble wrap  
or plastic trays.  
CAUTION: THE 802®C SYSTEM CONTROLLER CONTAINS NO USER-SERVICEABLE  
PARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICING TO WARRANTY  
SERVICE STATIONS OR FACTORY SERVICE.  
4
Download from Www.Somanuals.com. All Manuals Search And Download.  
SPECIFICATIONS  
Input Connections:  
(per channel)  
One (1) balanced female XLR connector  
One (1) unbalanced 1/4" phone jack  
Output Connections:  
(per channel)  
Two (2) 1/4" phone jacks per channel  
(outputs used depend upon mode selected)  
Input Impedance:  
Balanced input, 4k  
Unbalanced input, 42kΩ  
Electronic Crossover  
Frequency:  
180Hz (bi-amplified mode only)  
Maximum Output Level:  
Total Harmonic Distortion:  
4 Volts (+12dB into 600, 50Hz-16kHz)  
Less than .02% at 1 Volt (0dB)  
Less than .2% at 8 Volts (18dB)  
Output Noise:  
Less than 20uV (-9dBV) A-weighted  
Power Requirements:  
120 Vac, 50-60Hz, 3.5 Watts  
220 Vac, 50-60Hz, (European)  
100 Vac, 50-60Hz, (Japan)  
Dimensions:  
Weight:  
1 3/4"H x 10" W x 5" D  
(4.4 x 25.4 x 12.7 cm)  
1.97 lbs (.895 kg)  
5
Download from Www.Somanuals.com. All Manuals Search And Download.  
TECHNICAL DESCRIPTION  
The 802®C System Controller is a sophisticated signal processing device which combines the  
functions of three equalizers, an automatic switching circuit, and an electronic crossover. The  
802C system controller automatically selects the proper crossover function and equalization  
curve for a given system application through use of a switching network operating in conjunc-  
tion with the unit's output jacks. In addition to signal routing based on equalization require-  
ments, the switching network indicates mode of operation on its front panel. The front panel  
also includes high-cut and low-cut switches which decrease line output by 4dB at 55Hz and by  
10dB at 16kHz. Sharp subsonic and ultrasonic band-limiting filters reduce power waste, stage  
noise, high-frequency instability, and interference. The 802C system controller retains the  
compact dimensions of its predecessor, the Bose® 802E active equalizer, and fits into one  
space of a standard 19" equipment rack with the optional RMK-8 Rack Mount Kit.  
In an on-going process of manufacturing updates, as technology permits, Bose Corporation  
has begun using SMD (surface mount devices) components on its 802C controller. The new  
SMD components are such a space saving feature that this new version permits us to elimi-  
nate the "piggy-back" PCB and place all electronics on one single printed circuit board. This  
manual will identify the different procedures, PCB layouts, and components where necessary.  
There is no difference in the operation or function between the original 802C and the  
802C SMD units.  
6
Download from Www.Somanuals.com. All Manuals Search And Download.  
DISASSEMBLY/ASSEMBLY PROCEDURES  
Note: Refer to the Figures (2 and 3) for the  
following procedures.  
4.2 Perform procedure 2.  
5. Main PCB Removal  
5.1 Perform procedure 1.  
1. Top Cover Removal  
1.1 Remove the four screws (two located  
at the rear of the unit and one located on  
each side of the unit) that secure the top  
cover to the chassis.  
5.2 Remove the 6 knurled nuts securing  
the input and output jacks to the chassis.  
5.3 Remove the 5 screws that secure the  
main PCB to the chassis.  
1.2 Lift the rear of the top cover slightly  
and slide it forward until the front of the top  
cover is clear of the switches.  
5.4 On the rear of the unit, at the XLR  
jacks there is a small hole with a locking  
screw inside (see Figure 1). Insert a small  
flathead screwdriver into the hole and  
rotate the locking screw 1/8 turn counter-  
clockwise to release the locking tab.  
2. Top Cover Replacement  
2.1 Align the front of the top cover with the  
switches and LED's and slide the cover into  
place.  
5.5 Lift the front of the PCB up slightly.  
Gently pull the PCB out while pushing on  
the center of the XLR jacks.  
2.2 Secure the top cover into place.  
3. 302EQ ("piggy-back") PCB Removal  
6. Main PCB Replacement  
Note: The original 802C has two PCB's.  
The following procedure will discuss the  
removal of the "piggy-back" PCB.  
6.1 Carefully slide the PCB into the chas-  
sis while aligning the XLR jacks into their  
housing.  
Note: The "piggy-back" PCB does not  
need to be removed when removing the  
main PCB.  
6.2 Lock the XLR jacks into place by  
inserting a small screwdriver into the small  
hole in the XLR jack and rotate the screw  
clockwise 1/8 turn.  
3.1 Perform procedure 1.  
3.2 Locate the four plastic stand-offs (three  
are located in the corners of the PCB and  
one is located between C125 and C225).  
6.3 Replace the 5 screws that hold the  
PCB into place in the chassis.  
6.4 Perform procedure 2.  
3.3 With small needle-nose pliers, squeeze  
the retaining tab of each stand-off while  
gently lifting up on the PCB to release the  
lock. Grasp the PCB at the middle of each  
side and lift the PCB off of the connectors.  
4. 302EQ ("piggy-back") PCB Replace-  
ment  
4.1 Replace the "piggy-back" PCB (on the  
original 802C controller) by placing the  
board over the connectors and pushing the  
board down onto the stand-offs.  
Figure 1. Locking Tab Screw Location  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
Figure 2 Original 802C PCB Exploded View  
Figure 3 SMD 802C PCB Exploded View  
8
Download from Www.Somanuals.com. All Manuals Search And Download.  
TEST PROCEDURES  
Note: Set both the Lo and Hi cut switches  
IN for the following response table.  
1. Mode Indicator Test  
Lo and Hi Cut Switch Response Table  
1.1 Depending on the output jack configu-  
ration (see top cover diagram on page 17),  
equalization curves and output vary. You  
must test all modes of the 802C to assure  
proper operation.  
Frequency  
55Hz  
Output  
+9.3dB  
0dB  
(reference)  
+6.9dB  
Tolerance  
± 1.8dB  
750Hz  
-
15kHz  
± 2.0dB  
1.2 Perform the test below to verify that the  
mode select operation is working properly.  
3. 302 Passive Frequency Response  
3.1 Apply a 750Hz, 500mVrms signal to  
the input of the 802C.  
Note: You can insert one or both of the  
output jacks into the unit for this test.  
3.2 Reference a dB meter to the 302 AMP  
output jacks.  
LED Indicator Status  
Output  
Jacks  
Inserted  
No Jacks  
Inserted  
Inserted into  
802 AMP  
Inserted into  
302 AMP  
Inserted into  
802 and 302  
AMP  
802  
Full  
Passive  
2-Way  
Bi-  
3.3 Refer to the frequency response table  
below and verify the response of the unit.  
AMP  
Range  
On  
Off  
Off  
On  
Off  
Off  
Off  
Off  
On  
Passive Frequency Response Table  
Frequency  
30Hz  
Output  
-8.8dB  
+6.2dB  
-3.2dB  
+3.2dB  
0 dB  
(reference)  
0.9dB  
+15.3dB  
Tolerance  
± 2.5dB  
± 1.5dB  
± 1.5dB  
± 1.8dB  
-
On  
Off  
Off  
55Hz  
150Hz  
250Hz  
750Hz  
3kHz  
15kHz  
± 1.5dB  
± 1.8dB  
2. 802 Full Range Frequency Response  
2.1 Apply a 750Hz, 500mVrms signal to  
the input of the 802C.  
4. Bi-Amp Frequency Response  
Note: This test is performed with both the  
802 AMP and the 302 AMP output jacks  
used at the same time.  
2.2 Reference a dB meter to the 802 AMP  
output jacks.  
2.3 Refer to the frequency response table  
below and verify the response of the unit.  
4.1 Apply a 750Hz, 500mVrms signal to  
the input of the 802C.  
Full Range Frequence Response Table  
4.2 Reference a dB meter to the 802 AMP  
output jacks (while in the Bi-Amp mode).  
Frequency  
55Hz  
Output  
+14.0dB  
0dB  
+2.7dB  
0dB  
(reference)  
+2.3dB  
+12.0dB  
+16.9dB  
Tolerance  
± 1.5dB  
± 2.5dB  
± 1.2dB  
-
30Hz  
250Hz  
750Hz  
4.3 Refer to the frequency response table  
below and verify the response of the unit.  
802 Bi-Amp Frequency Response Table  
3kHz  
7.5kHz  
15kHz  
± 1.5dB  
± 1.5dB  
± 1.8dB  
Frequency  
55Hz  
Output  
-20.1dB  
+2.6dB  
0 dB  
(reference)  
+17.0dB  
Tolerance  
± 2.5dB  
± 1.8dB  
-
230Hz  
750Hz  
15kHz  
± 1.8dB  
9
Download from Www.Somanuals.com. All Manuals Search And Download.  
TEST PROCEDURES  
4.4 Apply a 100Hz, 500mVrms signal to  
6. Noise Test  
the input of the 802C.  
6.1 All noise measurements are ANSI  
A-weighted true rms, with the inputs  
shorted.  
4.5 Reference a dB meter to the 302 AMP  
output jacks (while in the Bi-Amp mode).  
4.6 Refer to the frequency response table  
6.2 Refer to the table below for the proper  
below and verify the response of the unit.  
noise levels.  
302 Bi-Amp Frequency Response Table  
Noise Table  
Frequency  
55Hz  
Output  
+3.7dB  
0dB  
Tolerance  
Output  
802 Full  
Range  
302 Passive  
802 Bi-Amp  
302 Bi-Amp  
Noise  
<20uV  
± 1.5dB  
100Hz  
-
(reference)  
-8.3dB  
<20uV  
<20uV  
<10uV  
230Hz  
750Hz  
± 1.5dB  
± 2.5dB  
-25.8dB  
5. Distortion Test  
Note: Total harmonic distortion must be  
measured in all modes to assure proper  
operation.  
5.1 Apply a 750Hz, 5Vrms signal to the  
input of the 802C.  
5.2 Refer to the table below for the distor-  
tion specification for the corresponding  
mode being tested.  
Note: For the Bi-Amp 302 reading the  
input signal should be a 100Hz, 5Vrms  
signal.  
Distortion Table  
Output  
802 Full  
Range  
Frequency. Distortion  
750Hz  
<0.1%  
302 Passive  
802 Bi-Amp  
302 Bi-Amp  
750Hz  
750Hz  
100Hz  
<0.1%  
<0.1%  
<0.1%  
10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
PART LIST NOTES  
1. This part is not normally available from Customer Service. Approval from the Field Service  
Manager is required before ordering.  
2. The individual parts located on the PCB are listed in the Electrical Part List.  
3.  
This part is critical for safety purposes. Failure to use a substitute replacement with  
the same safety characteristics as the recommended replacement part might create shock, fire  
and or other hazards.  
4. RC-4156 is to be used ONLY as a replacement for U5 and U6. This replaces the selected  
LS-404 IC previously used in these locations. Due to the higher current needs of the RC-4156,  
DAMAGE could occur to the power supply if this IC is used in other locations on the PCB.  
5. This part is used on the 220V variation only.  
11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
MAIN PART LIST  
(See Figure 4)  
Item  
Description  
Part  
Number  
135040  
133230  
103593  
Note  
Number  
1
2
3
4
COVER  
CHASSIS  
1
FEET  
SCREW, SHEET METAL,  
4-40 x .25L  
103118-04  
5
6
7
8
CONNECTOR, XLR  
NUT, KNURLED  
STRAIN RELIEF BUSHING  
LINE CORD, 100/120V  
LINE CORD, 220V  
121810  
121890  
106346  
111672  
113608  
3
1
9
LED  
123487  
120975  
-
120989  
107461  
103140-03  
10  
11  
12  
13  
14  
BRACKET, LED  
SMD PCB ASSEMBLY  
SWITCH, KNOB  
SWITCH, DUAL  
SCREW, MACHINE, 4-40  
x .187L  
15  
16  
17  
-
-
-
-
-
-
-
STANDOFF  
123199  
122068  
-
1
1
PCB ASSEMBLY (TOP)  
PCB ASSEMBLY (MAIN)  
CARTON  
FILLER  
POLY BAG  
ACCESSORY KIT  
MTG KIT (802 COVER)  
SWITCH, SLEEVE  
INSULATOR  
SCREW, MACHINE,  
NYLON,  
6-32 x .75L, 220V  
SCREW, MACHINE,  
NYLON,  
6-32 x .25L, 220V  
STANDOFF, HEX, 6 x  
.375L  
121860  
122640  
100688  
121783  
123037  
120996  
122855  
124843-12  
-
5
5
-
-
128843-04  
121828-06  
5
Reference  
Designator  
J1, 3  
Description  
Part Number  
Note  
CONNECTOR, XLR,  
INSERT  
121823  
J2, 4-8  
J9  
JACK, PHONE  
WAFER, 7PIN, (2461)  
CONNECTOR, 7PIN  
(21458)  
121570  
123237-07  
121970-07  
J9  
J10  
J10  
WAFER, 6PIN (2461)  
CONNECTOR, 6PIN  
(21458)  
123237-06  
121970-06  
P1, 2  
TEMINAL, FASTON  
111262  
3
3
T1  
TRANSFORMER,  
110/220V  
TRANSFORMER, 120V  
TRANSFORMER, 100V  
120993  
121659-1  
121824  
12  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Figure 4 Main Parts Exploded View  
13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ELECTRICAL PART LIST  
Resistors  
Reference  
Designator  
Description  
2.7k, 1/4 Watt, 5%  
3.3k, 1/4 Watt, 5%  
160k, 1/4 Watt, 5%  
Part  
Number  
117704-  
1212725  
117704-  
1213325  
117704-  
1211645  
117704-  
1213345  
122071-8225  
119976-  
2212001  
119976-  
2211911  
119976-  
2214872  
117704-  
1212035  
119976-  
2212372  
119976-  
2212741  
117704-  
1211025  
119976-  
2214751  
117704-  
1211332  
117704-  
1211035  
117704-  
1218222  
119976-  
2216811  
117704-  
1211835  
117704-  
1212235  
117704-  
1214715  
117704-  
1211345  
119976-  
2216041  
122071-5115  
119976-  
1214752  
119976-  
2211502  
119976-  
2213011  
117704-  
1213335  
Note  
R1, 2  
R3, 4  
R5-7, 11, 15, 118, 218  
R8, 9, 12, 13, 16, 17, 101, 210, 104,  
330k, 1/4 Watt, 5%  
204  
R10, 14, 18  
8.2k, 1/2 Watt, 5%  
2.00k, 1/4 Watt, 1%  
R102, 103, 105, 122, 124, 202, 203,  
205, 222, 224  
R106, 206  
1.9k, 1/4 Watt, 1%  
48.7k, 1/4 Watt, 1%  
20k, 1/4 Watt, 5%  
23.7k, 1/4 Watt, 1%  
2.74k, 1/4 Watt, 1%  
1k, 1/4 Watt, 5%  
R107, 207  
R108, 208  
R109, 126, 130, 131, 209, 226, 230,  
231  
R110, 210  
R111, 113, 211, 213  
R112, 146, 152, 212, 246, 252  
R114, 214  
4.75k, 1/4 Watt, 1%  
13k, 1/4 Watt, 2%  
10k, 1/4 Watt, 5%  
8.2k, 1/4 Watt, 2%  
6.81k, 1/4 Watt, 1%  
18k, 1/4 Watt, 5%  
22k, 1/4 Watt, 5%  
470, 1/4 Watt, 5%  
130k, 1/4 Watt, 5%  
6.04k, 1/2 Watt, 1%  
R115, 215  
R116, 125, 216, 225  
R117, 128, 129, 133, 134, 217, 228,  
229, 233, 234  
R119, 120, 219, 220  
R121, 136, 221, 236  
R123, 223  
R127, 227  
R132, 141, 145, 153-158, 232, 241,  
245, 253-258  
R135, 159, 235, 259  
R137, 237  
510, 1/4 Watt, 5%  
47.5k, 1/4 Watt, 1%  
R138, 140, 238, 240  
R142, 242  
15.0k, 1/4 Watt, 1%  
3.0k, 1/4 Watt, 1%  
33k, 1/4 Watt, 5%  
R143, 243  
14  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ELECTRICAL PART LIST  
Resistors (continued)  
Reference  
Designator  
Description  
56k, 1/4 Watt, 2%  
4.12k, 1/4 Watt, 1%  
23.7k, 1/4 Watt, 1%  
30.9k, 1/4 Watt, 1%  
22k, 1/4 Watt, 5%  
Part  
Note  
Number  
117704-  
1215632  
119976-  
2214121  
119976-  
2212372  
119976-  
2213092  
117704-  
1212235  
R144, 244  
R148, 248  
R149, 249  
R150, 250  
R160, 260  
SMD Resistors  
Reference  
Designator  
Description  
Part  
Note  
Number  
R1, 2  
R3, 4  
2.7k, CHIP, 5%  
3.3k, CHIP, 5%  
160k, CHIP, 5%  
330k, CHIP, 5%  
124895-2725  
124895-3325  
124895-1645  
124895-3345  
124894-2001  
R5, 6, 7, 11, 15, 118, 218  
R8, 9, 12, 13, 16, 101, 104  
R102, 103, 105, 111, 122, 124, 202,  
203, 205, 211, 222, 224  
R106, 206  
2.00k, CHIP, 1%  
1,91k, CHIP, 1%  
48.7k, CHIP, 1%  
20k, CHIP, 5%  
23.7k, CHIP, 1%  
124894-1911  
124894-4872  
124895-2035  
124894-2372  
R107, 207  
R108, 208  
R109, 126, 130, 131, 209, 226, 230,  
231  
R110, 210  
R112, 114, 212, 214  
R113, 213  
R115, 215  
R116, 125, 139, 152, 216, 225, 239,  
252  
2.74k, CHIP, 1%  
13.3k, CHIP, 1%  
1k, CHIP, 5%  
10k, CHIP, 5%  
8.25k, CHIP, 1%  
124894-2741  
124894-1332  
124895-1025  
124895-1035  
124894-8251  
R117, 128, 129, 133, 134, 217, 228,  
229, 233, 234  
R119, 120, 219, 220  
R121, 136, 160, 221, 236, 260  
R123, 223  
6.81k, CHIP, 1%  
124894-6811  
18k, CHIP, 5%  
22k, CHIP, 5%  
470, CHIP, 5%  
130k, CHIP, 5%  
6.04k, CHIP, 1%  
124895-1835  
124895-2235  
124895-4715  
124895-1345  
124894-6041  
R127, 227  
R132, 141, 145, 147, 151, 153-158,  
232, 241, 245, 247, 251, 253-258  
R137, 237  
R142, 242  
R143, 149, 150, 234, 249, 250  
R144, 244  
47.5k, CHIP, 1%  
3.01k, CHIP, 1%  
33k, CHIP, 5%  
56.2k, CHIP, 1%  
4.75k, CHIP, 1%  
26.7k, CHIP, 1%  
124894-4752  
124894-3011  
124895-3335  
124894-5622  
124894-4751  
124894-2672  
R146, 246  
R164, 264  
15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ELECTRICAL PART LIST  
Capacitors  
Reference  
Designator  
Description  
Part  
Note  
Number  
120993  
103447  
C1  
.0047uF, 220V  
.0047uF, 1.4KV, 100/120V  
3
C2, 3  
C4  
C5, 6  
C7-10  
C11-19, 22  
.015uF, FILM  
118091-153  
119696-103  
110704  
119942-1R0  
117502  
.01uF, CERAMIC DISC  
470uF, ELECTROLYTIC  
1uF, ELECTROLYTIC  
.1uF, CERAMIC DISC  
C101, 117, 125, 201, 217, 225  
C102, 202  
C103-105, 203-205  
C106, 206  
C107, 108, 121, 122, 207, 208, 221,  
222  
22uF, ELECTROLYTIC  
2.2uF, ELECTROLYTIC  
.0068uF, FILM  
.33uF, FILM  
.1uF, FILM  
119944-220  
119943-2R2  
118091-682  
123785-334  
118091-104  
C109, 209  
C110, 126, 127, 210, 226, 227  
C111, 211  
C112, 113, 124, 212, 213, 224  
C114, 214  
C115, 116, 123, 215, 216, 223  
C118, 119, 218, 219  
C120, 220  
.0012uF, FILM  
118091-122  
119617-471  
119617-271  
118091-333  
118091-683  
118091-473  
118091-823  
118091-223  
470pF, CERAMIC DISC  
270pF, CERAMIC DISC  
.033uF, FILM  
.068uF, FILM  
.047uF, FILM  
.082uF, FILM  
.022uF, FILM  
SMD Capacitors  
Reference  
Designator  
Description  
Part  
Number  
Note  
C4  
C11-22  
C110, 126, 127, 210, 226, 227  
.01uF, CERAMIC, CHIP  
.1uF, CERAMIC, CHIP  
470pF, CERAMIC, CHIP,  
10%  
124959-103  
124959-104  
124956-4712  
C111, 211  
270pF, CERAMIC, CHIP,  
10%  
124956-2742  
16  
Download from Www.Somanuals.com. All Manuals Search And Download.  
ELECTRICAL PART LIST  
Diodes  
Reference  
Designator  
Description  
Part  
Number  
116995-4746A  
121501  
Note  
D1-5  
ZENER, 18V, 1W, IN4746A  
1N4148, DIODE  
BRIDGE RECTIFIER  
D1, 101, 104, 201-204  
Z1  
112027  
3
Transistors  
Reference  
Designator  
Description  
Part  
Note  
Number  
117921  
119168  
Q1, 4, 5  
Q2, 3, 6  
TRANSISTOR NPN  
TRANSISTOR PNP  
Integrated Circuits  
Reference  
Designator  
Description  
Part  
Number  
120535/192166  
121116-1  
121117-1  
121854  
Note  
U1, 8, 9  
U2  
U3  
U4  
U5, 6  
U7, 10  
QUAD OP AMP, LS-404  
VOLT REG, 78L15  
VOLT REG, 79L15  
QUAD NAND CD-4011  
QUAD OP AMP, RC4156  
QUAD AW. SW. CD4066  
4
192166  
119837  
4
Part Number change for U2 and U3  
9/18/01 Also U5 and U6 has been replaced by part number  
192166 which is an LS404 IC. The RC4156 is nolonger available.  
17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
VOLTAGE CONVERSION INSTRUCTIONS  
Voltage Conversions are to be performed on Military units. However it is possible to convert  
a 110 Volt unit (by replacing the transformer) and a 220 Volt European unit.  
1. 220 Volt to 110 Volt Conversion  
2. 110 Volt to 220 Volt Conversion  
Note: Conversions must be performed  
with the line cord disconnected from any  
power source. Refer to Figure 3 below for  
the following procedures. The jumpers  
listed in parentheses refer to the SMD  
units.  
2.1 Perform disassembly procedure 3,  
PCB removal.  
2.2 Remove the two jumpers LK-32 (LK-  
42) and LK-33 (LK-43).  
For units with a 110 Volt transformer.  
2.2 Remove the 110 Volt transformer and  
C1 capacitor, and install 220 Volt compo-  
nents (see the part list).  
1.1 Perform disassembly procedure 3,  
PCB removal.  
1.2 Locate jumper LK-31, (LK-35) in front  
of the power transformer (near the line  
cord), and remove it.  
2.3 Add jumper LK-31 (LK-35). Line cord  
replacement is optional.  
1.3 Add jumpers LK-32 (LK-42) and LK-33  
2.4 Perform assembly procedure 4, PCB  
(LK-43).  
replacement.  
For European 220 Volt units.  
1.4 Remove the 220 Volt line cord and  
replace it with a 110 Volt line cord. Make  
certain the line cord is properly installed in  
the strain relief.  
2.5 Test the unit to confirm the voltage  
conversion was perform correctly.  
2.6 Add a 220 Volt label on the rear of the  
unit just below the line cord.  
1.5 Perform assembly procedure 4, PCB  
replacement.  
1.6 Test the unit to confirm the voltage  
conversion was perform correctly.  
1.7 Remove the 220 Volt label on the rear  
of the unit.  
220 Volt to 110 Volt Conversion  
110 Volt to 220 Volt Conversion  
Figure 5. Voltage Conversion Diagram  
18  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Figure 6 Top Cover Connection Diagram  
19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE  
®
®
Bose Corporation  
The Mountain  
Framingham Massachusetts USA 01701  
P/N 129292 REV. 03 10/97 FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-367-4008  
Download from Www.Somanuals.com. All Manuals Search And Download.  

BenQ Projector Accessories MP780 ST User Manual
Bissell Vacuum Cleaner 59G4 User Manual
BMW Automobile PN 01 00 1 470 354 User Manual
Bogen Car Speaker cs1ez User Manual
Brother Computer Drive HL 4000CN User Manual
Campbell Hausfeld Nail Gun CHN101 User Manual
Casablanca Fan Company Outdoor Ceiling Fan 59165 User Manual
Casio Cash Register PCRT48S User Manual
Casio Clock Radio 3057 User Manual
CBC DVR ZR DH1621NP User Manual