UX-2200CMU/CMC
FO-2150CMU/CMC
TECHNICAL MANUAL
No. 00ZU220CMUTME
FACSIMILE
INK JET PRINTER
UX-2200CM
MODEL FO-2150CM
This Technical Manual contains detailed information about the printer for the UX- 2200CM / FO-2150CM
to the Service Manual already issued.
CONTENTS
[1] Engine Specifications........................................................................................................................... 1
[2] Abbreviations ....................................................................................................................................... 1
[3] Diagnostic Information ......................................................................................................................... 1
[4] Circuit description ................................................................................................................................ 2
[5] Overall Trouble Shooting of Printer PWB............................................................................................. 7
[6] How to Decide the Number of the Wrong Nozzle .............................................................................. 10
[7] Waveforms ......................................................................................................................................... 12
[8] Service Checks .................................................................................................................................. 15
[9] IC signal name ................................................................................................................................... 19
[10] Exploded View ................................................................................................................................... 23
[11] Replacement Parts List ...................................................................................................................... 24
Parts marked with "
" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
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[4] Circuit description
1. General description
The compact design of printer PWB is obtained by using 8 bit microprocessor(CPU) and ASIC in the printer control
section.
2. Electrical System
The PWB provides mechanical control for Ink Jet Printer.
Figure 1 shows the interconnection of PWB and other electrical component in the print mechanism.
Ink Cartridge
CN3
CN2
CN4
CNPRT
Host Interface
PC1
CN1
Cartridge Carrier Motor
Paper Feed Motor
Figure 1
– 2 –
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3. Electricai Overview
The information in this section appears in a sequence relative to the system diagram in the following figure.
SRAM
8bit
Driver
Driver
Driver
Head
MPU
ASIC
Carriage Motor
Host Interface
TO FAX PWB
Feed Motor
Sensor
•Home Position
•Paper-IN
Figure 2 System of printer Block diagram
4. Power Supply Connector
The mechanism requires two voltages (+5V and +24V).
These two voltages supplied from CNPRT connector.
5. Host interface connector
Connector CNPRT on the printer PWB provides 28 lines from the host unit, for control of various operating options
available to the host.
The two primary functions of the host interface are:
Printing data for the Ink Jet Printer.
Error status to the host.
6. ASIC, RAM, and CPU
The Application Specific Integrated Circuit(ASIC) combines several blocks of circuitry into one chip.
Descriptions of circuitry within the ASIC appear later in the section.
A microprocessor bus, which extends inside the ASIC, carries data among the CPU(include internal ROM), RAM, and
ASIC circuitry.
The ROM (inside CPU) is a 8K Byte chip that contains the software code (firmware) for the Ink Jet Printer.
The RAM is a 32 K Byte chip that stores print data and other variable information.
– 3 –
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7. Driver IC
The paper motor and carriage motor require current that cannot be driven directly from ASIC chip.
Motor driver IC provide the additional current and voltage capability.
The driver IC (IC1 and IC2) located near the respective motor connector on the printer PWB also connect back to the
ASIC.
Two additional drivers IC drive 56 nozzles on the cartridge.
These driver ICs , located between the two flex-circuit connector (CN3 and CN4) on the printer PWB , also connected
back to the ASIC.
The out-of-paper sensor do not require drivers, and connect directly to the ASIC.
The Host interface also connects directory to the ASIC.
8. Paper Motor
The ASIC controls the paper motor, which is a stepper motor that connects via a 5 pin connector to CN1 on the printer
PWB.
The stepper motor is a 4-coil motor, which must be stepped in proper sequence, requiring four signal lines to initiate
each line.
This is an open-loop system that does not provide feedback to the logic circuit on printer PWB.
The Paper motor drives the recording paper movement.
The planetary gear is changed over according to the rotation direction of this motor.
Accordingly,hand paper feed or automatic paper feed is selected.
(1) Paper feed(paper feed from tray)
The planetary gear turns counterclockwise and is connected to the PU gear,so that paper is fed automatically.
HAND FEED PAPER
The automatic paper feed or
hand paper feed is selected by
changing the rotation direction of
motor as a result of changing-over
of this planetary gear.
MOTOR GEAR
AUTOMATIC
FEED PAPER
PU GEAR
PRINTER FEED GEAR
– 4 –
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(2) Print transfer
The planetary gear turns clockwise and is disconnected from the PU gear,so that the paper is not fed automati
cally. In case of hand paper feed the paper is fed directly to the transfer roller.
HAND FEED PAPER
PLANET GEAR
MOTOR GEAR
AUTOMATIC
FEED PAPER
PU GEAR
When the mechanism stops,
the automatic paper feed
is not performed
PRINTER FEED GEAR
9. Carriage Motor
The ASIC controls the carriage motor, which is a stepping motor that connects
via a 4-pin connector to CN2 on the printer PWB.
10. INK Cartridge Carriage
The carriage connects via a flex circuit that plugs into the 32 pin connectors, CN3 and CN4 on the printer PWB.
The ink cartridge contacts connect to the carriage contacts.
The ASIC controls the carriage , and ink cartridge.
11. Paper IN Sensor
The Peper-IN-Sensor exists on printer PWB.
This sensor is an optical sensor.If the optical route is interrupted,Collector PIN(pin-C)of this sensor indicates Hi-
Level(5V).If the optical route is opend,pin-C indicates Low-Level(0V).
This sensor provides information of front and end edge location of recording paper and information of paper jam.
The change between Hi and Low of this sensor(PC1 pin-C)is used as follows.
1. In the case of manual paper feeds
When the recording paper is inserted from By-pass route,the front edge of this recording paper pushes the lever,and
this sensor indicates L.
Paper feed action is happened by this change and recording paper is fed in constant length.
As paper feeds out of paper path,the lever returns,this sensor indicates H and provides information of end edge of
the recording paper.
2. In the case of auto paper feeds
When printing action happens and there is no recording paper at By-pass route and there are some recording
papers at auto paper providing unit,the feed motor is driven and the recording paper is fed from auto paper provid-
ing unit.
At this time,the change from H to L of this sensor provides the front edge of the recording paper.And this sensor
provides information of paper jam ,when this sensor DOES NOT change from H to L after some time.
As paper feeds out of paper path,the lever returns,this sensor indicates H from L and provides the infomation of end
edge of the recording paper.
– 5 –
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12. Home Position Sensor
LEFT
RIGHT
B
C
A
CARRIAGE HOLDER
The home position of carriage is detected as a result of change of output of photointurrupter A which is caused due to
shutting-off of optical path of photointerrupter A by the slit B .
While the photointerrupter is shut off by the slit B, the output (pin 1 of CN3) of photointerrupter gets H level (+5V). If it
is not shut off, the output gets L level (0V).
In the home position the output is L. In case of L direction movement the output is H during passing through the slit,
and after passing the output gets again L level.
The operation logic is as follows.
Insignificant movement in L direction
(1) If in this case the output is L:
It is judged that the carriage exists in the L direction as compared to the slit B . The carriage is moved in the R direc-
tion, so that the output changes from L to H (during passing through the slit B ). Further the carriage is moved in the R
direction. The position where H changes to L again is regarded as a home position.
(2) If in this case the output is H:
It is judged that the carriage exists near the home position, the carriage is moved in the R direction. The position
where the output is changed from H to L is regarded as a home position.
Operation in case of malfunction of photointerrupter A .
Case 1: When the output of photointerrupter remains H.
As is evident from the operation logic, the H output does not continue for a long time in case of normal operation.
Hence, this state is judged to be abnormal. The carriage stops soon after it moves insignificantly.
Case 2: When the output of photointerrupter remains L.
The carriage is going to move according to the operation logic. Since the output remains L even when the sensor
passes through the slit B , the home position cannot be found, and the carriage moves continuously in the R direction.
Finally, it contacts the frame C , emitting an abnormal sound. The abnormal state is detected, and the motor stops.
– 6 –
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[5] Overall Trouble Shooting Of Printer PWB
• BOTH CARRIAGE MOTOR AND FEED MOTOR
ARE NG.
REPLACE F100 AND F101
+24V AT Q1-E (Figure 1)
FUSE “F100” AND “F101
OK
OPEN
NG
CHECK RESISTANCE
BETWEEN +24V AND GND.
SHORT OR NOT
CHECK +24V PATTERN
+24V AT Q1-C (Figure 1)
NG
NO
SHORT
OK
REPLACE PRINTER PWB
CHECK IC5 AND IC8 AND
R145,R144
+5V AT Q101-B (Figure 2)
REPLACE IC5 OR IC8
NG
NG
OK
OK
OK
REPLACE PRINTER PWB
0V AT Q101-C (Figure 2)
OK
REPLACE Q101 (Figure 2)
NG
REPLACE Q1 (Figure 1)
CHECK IC5 AND IC8
OK
REPLACE IC5 OR IC8
NG
REPLACE PRINTER PWB
Q1
Q101
C
FRONT
VIEW
FRONT
VIEW
B
E
B
C
E
Figure 1
Figure 2
– 7 –
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• FEED MOTOR IS NG (CARRIAGE MOTOR IS
GOOD)
REPLACE F101
FUSE “F101”
OK
OPEN
NG
CHECK IC5
OK
CHECK WAVEFORMS IC2 ( 2,4,6,8 pin) (Figure 4)
REPLACE IC5
NG
OK
REPLACE PRINTER PWB
CHECK IC2
OK
REPLACE IC2
CHECK WAVEFORMS IC2 ( 3,5,7,9 pin) (Figure 3)
NG
NG
OK
REPLACE PRINTER PWB
REPLACE PRINTER PWB
+40~50V
IC2-2,4,6,8PIN
INCLUDE OVERSHOOT
1.5V
GND
+24V
GND
Figure 4
Figure 3
• CARRIAGE MOTOR IS NG (FEED MOTOR IS OK).
PLS INSERT THE CABLES
IS THE FLEXIBLE CABLES INSERTED CORRECTLY?
OK
NG
OPEN
NG
CORRECTLY.
FUSE “F100”
OK
REPLACE F100
CHECK IC5
OK
REPLACE IC5
REPLACE IC1
CHECK WAVEFORMS IC1 ( 18,20,21,22,23,25 pin) (Figure 6)
OK
NG
NG
REPLACE PRINTER PWB
CHECK IC1
OK
CHECK WAVEFORMS IC1 ( 6-9 pin) (Figure 5)
OK
NG
REPLACE PRINTER PWB
REPLACE PRINTER PWB
+5V
+24V
GND
GND
Figure 5
Figure 6
– 8 –
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• MISSINGNOZZLES (RESULT OFCHECKPATTERN
OR CLEAN NOZZLES
CLEAN NOZZLES
NG
REPLACE ANOTHER CARTRIDGE
NG
CHECK IC AND CONNECTOR BY
REFERING TO THE TABLE 1&2
MISSING MANY NOZZLES
YES
NO
CHECK THE SOLDER
IC4, IC6 COMMON pin
IC 5 82-89 pin
IC4 1,4,40,41,43,44 pin
IC6 1,4,40,41,43,44 pin
CORRECT SOLDER
NG
OK
CHECK RESISTANCE BETWEEN
+24V AND GND. SHORT OR NOT
CHECK +24V AT R1,R2,R6, AND R7
CHECK +24 PATTERN
NG
NO
SHORT
OK
REPLACE PRINTER PWB
CHECK +5V AT IC4 AND IC6
OK
CHECK +5V PATTERN
NG
REPLACE IC4 OR IC6
– 9 –
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[6]How to Decide the Number of the Wrong Nozzle
FUNC + 6 +
+
“CLEAN NOZZLES”
A
B
Nozzle 1
Nozzle 56
....
Horizontal lines on A and B correspond to nozzle #1,#2 #56 from left side to right side.
If there are missing horizontal lines, you can decide the number of wrong nozzle from pattern A or B .
Note) Don’t use the check pattern to decide the number of wrong nozzle.
– 10 –
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TABLE 1.
TABLE 2.
(Nozzle# IC-PIN CONNECTOR-PIN)
(Nozzle Common CN)
PIN CN PIN
Nozzle#
1
IC
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
Nozzle#
PIN CN
PIN
9
Nozzle#
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
IC PIN
CN PIN
39
39
35
35
31
31
25
25
36
36
32
32
26
26
37
37
33
33
27
27
38
38
34
34
30
30
24
24
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
1,3,5,7,9,11,13,15,
17,19,21,23,25,27
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
6
4
10
10
14
14
22
22
9
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
4
4
20
17
21
16
30
7
2
1
2
3
4
3
4
4
4
8
29
2
28
10
27
11
26
12
25
13
24
14
23
15
22
7
3
2,4,6,8,10,12,14,16,
18,20,22,24,26,28
4
5
29,31,33,35,37,39,41,
43,45,47,49,51,53,55
30,32,34,36,38,40,42,
44,46,48,50,52,54,56
6
7
22
15
23
14
29
8
8
3
9
9
13
13
21
21
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
24
13
25
12
28
9
8
12
12
20
20
6
30
16
21
17
20
6
26
11
27
10
31
6
6
11
11
15
15
23
23
7
31
18
19
19
18
5
32
5
1
32
7
4
– 11 –
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[7] Waveforms
FEED MOTOR WAVEFORMS WHEN FEEDING PAPER
T
Stopped
CH1=50V
DC P:10
T:1.92ms
CH2=50V
DC P:10
1/ T:520.8Hz
CH3=50V
DC P:10
CH4=50V
DC P:10
2ms / d
CN1-2
CN1-3
1
G
G
2
3
CN1-4
CN1-5
G
G
4
G : 0V
Figure 1
– 12 –
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CARRIAGE MOTOR WAVEFORMS
T
Stopped
CH1=20V
DC P:10
T:19.2¨s
CH2=20V
DC P:10
1/ T:52.08kHz
CH3=20V
DC P:10
CH4=20V
DC P:10
20s / d
CN2-1
CN2-2
1
2
3
CN2-3
CN2-4
4
When the cartridge holder is at the position of replacing cartridge.
Figure 2
T
Stopped
CH1=20V
DC P:10
T:960¨s
CH2=20V
DC P:10
1/ T:1.042kHz
CH3=20V
DC P:10
CH4=20V
DC P:10
1ms / d
CN2-1
CN2-2
1
2
3
CN2-3
CN2-4
4
Measured for printing check pattern
Figure 3
– 13 –
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CARRIAGE MOTOR WAVEFORMS MEASURED FOR CHECKING OUT OF INK
T
Stopped
CH1=20V
DC P:10
T:1.92¨ms
CH2=20V
DC P:10
1/ T:520.8Hz
CH3=20V
DC P:10
CH4=20V
DC P:10
2ms / d
CN2-1
CN2-2
1
2
3
CN2-3
CN2-4
4
Figure 4
T
Stopped
CH1=20V
DC P:10
T:480¨s
CH2=20V
DC P:10
1/ T:2.083kHz
CH3=20V
DC P:10
CH4=20V
DC P:10
500s / d
CN2-1
CN2-2
1
2
3
CN2-3
CN2-4
4
Figure 5
– 14 –
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[8] Service Checks
1. Carrier Transport Service Check
FRU
Action
System Board
Check the motor for binds,or loose motor pulley.
1
2
Turn the printer off and disconnect CN2 from the system board.Check
for motor pins shorted to the motor housing.If you find a pin shorted to
the housing,replace the motor. If the failure remains,replace the system
board.
Carrier Transport
Motor
A noisy or chattering motor or a motor that fails to turn can be caused
by:
• An open or short in the motor.
• An open or short in the motor driver on the system board.
• A bind in the carrier transport mechanism.
With the carrier transport motor cable disconnected from the system
board,check for zero to ten (0-10)ohms between the following pins on
the motor:
CN2-1 and CN2-2
CN2-3 and CN2-4
If the readings are incorrect,replace the motor.
Carrier Guide Rod
Clean the carrier rod.
3
Note:Lubricate the carrier guide rod and the carrier rod bearing surface
with grease.
Carrier Transport Belt
Idler Pulley Parts
Carrier Frame
Check for worn,loose or broken parts. Check for obstructions blocking
carrier movement.
Carrier to carrier frame engagement should be lubricated with grease.
4
5
Home Position Sensor Be sure the carrier returns to the home position after turning the printer
on. If the carrier moves half way,or if there is an abnormal sound,turn
the printer off and disconnect CN3 from the system board. Turn the
printer on and check for 5V dc between CN3-4 and CN3-2 on the
system board. If the voltage is present,replace the home position
sensor. If the voltage is not present,replace the system board.
Maintenance Station
A problem with the maintenance station can cause carrier movement
problems at the right margin. Go to the ‘Maintenance Station Service
Check’ on page 3.
6
– 15 –
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2. Envelope Feed Service Check
FRU
Action
Envelope Guide
Be sure the envelope guide has been turned to the envelope load
position.
1
Be sure the envelope guide is against the envelopes.
Perform the ‘Paper Feed Service Check’on page 4.
3. Maintenance Station Service Check
The maintenance station has two functions:
Cleans the printhead nozzles during the print operation.
•
Seals the printhead when it is not being used to prevent the nozzles from drying.
•
FRU
Action
Maintenance Station
Assembly
As the carrier moves to the right over the maintenance station,a slot on
the bottom of the carrier engages a tab on the sled of the maintenance
station causing the cap to rise and seal the printhead. Carrier move-
ment to the left uncaps the printhead. The wiper cleans the printhead
nozzles as the carrier leaves the maintenance station. The wiper
cleans the printhead only when the carrier is moving to the left. There
should be no wiping action of the printhead nozzles when the carrier is
moving to the right. After the cleaning operation is complete,a tab on
the maintenance station engages a tab on the carrier,causing the wiper
to lower.
1
Check the maintenance station for worn or broken parts.
Wiper
Cap
A worn wiper causes degraded print quality just after a maintenance
cleaning. Check for a loose or worn wiper.
2
3
A worn cap causes the printhead nozzles to dry and clog. Check for a
loose or worn cap.
– 16 –
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4. Paper Feed Service Check
If your machine does not have paper jam problems, continue with the service check. If your machine does have a
paper jam problem,examine it for the following before you begin the service check:
Check the entire paper path for obstructions.
•
Be sure there is not too much paper in the sheet feeder.
•
Be sure the correct type of paper is being used.
•
Check for static in the paper.
•
FRU
Action
System Board
Turn the printer on and verify the paper feed motor activates. Be sure
the end-of-form sensor lever is in the down position. Turn the printer off
and disconnect CN1 from the system board. Check for motor pins
shorted to the motor housing. If you find a shorted pin,replace the
paper feed motor. If you still have a failure after replacing the paper
feed motor,replace the system board.
1
2
Paper Feed Motor
A noisy or chattering motor or a motor that fails to turn,can be caused
by an open or short in the motor,an open or short in the motor driver on
the system board,or a bind in the paper feed mechanism. With the
paper feed motor cable CN1 disconnected from the system board,
check for 140 ohms(±7%)between the follwing pins on the motor
: Pin 1 to Pin 2,Pin 1 to Pin 4
280 ohms(±7%)between pins 2 and 4. If the readings are
incorrect,replace the paper feed motor and drive train assembly.
Although the paper feeds in a forward direction only,the paper feed
motor turns in two directions.
If the paper feed motor turns in one direction only,replace the system
board.
Binds in the paper feed motor or gear train can cause intermittent false
paper jam errors. Remove the paper feed motor and check the shaft
for bins.
Also check for loose or worn motor gear.
Drive Train Assembly
Auto Sheet Feeder
Check for binds in the gear train and paper feed machanism by remov-
ing the paper feed motor and rotating the large gear by hand . If you
notice a bind,replace the drive train assembly. Check the feed clutch
gear on the left side of the auto sheet feeder. Turn the clutch gear and
check that it rotates freely in one direction and locks when turned in the
opposite direction.
3
Check the pick rollers for wear.
Check the following for wear:
4
5
Mid-Frame Asm
Access Cover Asm
• Exit roller
• Star rollers
End-of-Forms Flag
and Spring
Check for binds or damage. If binds are found,replace the end-of-forms
flag.
6
7
End-of-Forms Sensor
Check the sensor for birt. Be sure the sensor lever is in the down
position. If the failure remains,replace the system board.
– 17 –
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5. Paper Path Service Check
Examine the machine for the following before you being this service check:
Check the entire paper path for obstructions
•
•
Be sure the correct type of paper is being used.
Be sure the printer is installed on a flat surface.
•
FRU
Action
Large and Small Feed
Rollers
Check for wear and binds.
1
2
Small Feed Roller
Springs
Check for damage.
Auto Sheet Feeder
Check the pick rollers for wear.
Check the following for wear:
3
4
Mid-Frame Asm
Access Cover Asm
• Exit roller
• Star rollers
End-of-Forms Flag
Check for binds or damage.
5
6. Power Service Check
FRU
Action
Power Supply
Disconnect N1 from the system board and check the following voltages
on the power supply cable:
1
• CNPRT-22 to Gnd =+5V dc
• CNPRT-26 to Gnd =+24V dc
If you do not have correct voltage,replace the power supply.
Be sure to unplug the machine before you reconnect the power supply
to the system board.
Printhead Cable
Carrier Home Sensor
Parallel Cable
Turn off the printer.Disconnect one of the printhead cables and turn on
the printer. Look for a symptom change. Check the failing part for
shorts and replace as necessary.
2
3
Repeat this procedure for the carrier home sensor and parallel cable.
If the symptom has not changed,replace the system board.
System Board
– 18 –
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[9] IC Signal Name
IC 8 : VHiTMP87PH47U (TMP87C807U)
1. Pin Assignment (Top View)
P15(TC2)
P16
34
35
36
37
38
39
40
41
42
43
44
22
21
20
19
18
17
16
15
14
13
12
P63
P62
P61
P60
N.C.
VSS
XOUT
XIN
RESET
TEST
P00
P17
(INT5/STOP)P20
(XTIN)P21
(XTOUT)P22
VDD
(HSO)P77
(HSCK)P76
(SO)P75
(SI)P74
2. Block Diagram
VDD
Power
Supply
VSS
P
S
W
Stack Pointer
Program Counter
Data Memory
(RAM)
RBS
Flags
ALU
Register Banks
RESET
Reset I/O
Test pin
System Controller
Program Memory
(RAM)
TEST
Interrupt Controller
Stand by Controller
Timming Generator
16bit
Timer/Counters
Time Base
Timer
8bit
Serial
Interfaces
Timer/Counters
XIN
High
frequency
Resonator
Connecting
pins
TC7
TC2
TC3
TC5
SIO
HSO
Register
Decoder
Clock
Generator
XOUT
Low
frequency
Watchdog
Timer
P2
P6
P0
P9
P7
P5
P22
to
P20
P67
to
P60
P07
to
P00
P17
to
P10
P77
to
P70
P51
to
P50
I/O Ports
I/O Ports
Output Ports
– 19 –
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UX-2200CMU/CMC
FO-2150CMU/CMC
3. Pin Function
PIN Name
P07 to P00
P17,P16
Input/Output
I/O
Function
Two 8-bit programmable input/output ports
(tri-state).
I/O
Each bit of these ports can be individually
configured as an input or an output under
software control.
P15(TC2)
I/O(Input)
I/O(Output)
Timer/Counter 2 input
P14(PPG)
Programmsble pulse generator output
Divider output
P13(OVO)
P12(INT2/TC1)
P11(INT1)
During reset,all bits are configured as in-
puts.
I/O(Input)
External interrupt input 2 or Timer/Counter 1 input
External interrupt input 1
External interrupt input 0
When used as a divider output or a PPG
output, the latch must be set to “1”.
P10(INT0)
P22(XTOUT)
P21(XTIN)
P20(INT5/STOP)
P51,P50
I/O(Output)
I/O(Input)
3-bit input/output port with latch.
Resonator connecting pins(32.8kHz). For inputting
external clock,XTIN is used and XTOUT is opeded.
When used as an input port,the latch must
be set to “1”.
External interrupt input 5 or STOP mode retease signal input
Output
2-bit output port with latch.
P67 to P60
I/O(Output)
8-bit programmable input/output port (tri-
state). Each bit of the port can be indi-
vidually configured as an input or an out-
put under software control.
8-bit programmable input/output port (tri-
state).
HSO serial data output
P77(HSO)
P76(HSCK)
P75(SO)
I/O(Output)
HSO serial clock output
SIO serial data output
P74(SI)
SIO serial data input
When used as an input port, a SIO input/
output on external interrupt input or a
PWM/PDO output, the latch must be set
to “1”.
P73(SCK)
I/O(I/O)
I/O(Output)
I/O(Input)
SIO serial clock input/output
8-bit PWM output or 8-bit programmable divider output
External interrupt input 4
External interrupt input 3 or Timer/Counter 3 input
P72(PWM/PDO)
P71(INT4)
P70(INT3/TC3)
XIN/XOUT
Resonator connecting pins for high-frequency clock.
Input,Output
I/O
For inputting external clock. XIN is used and XOUT is opend.
Reset signal input or watchdog timer output/address-trap-reset output/system-
clock-reset output.
RESET
Test pin for out-going test. Be tied to low.
+5V,0V(GND)
TEST
Input
VDD,VSS
N.C.
Power Supply
Be tied to low.
– 20 –
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UX-2200CMU/CMC
FO-2150CMU/CMC
IC 4 , 6 : VHil6451///-1 (L6451)
1. Pin Connection (Top View)
OUT 26
OUT 25
OUT 24
7
8
9
39 OUT 0
38 OUT 1
37 OUT 2
36 OUT 3
35 OUT 4
34 OUT 5
33 OUT 6
32 OUT 7
31 OUT 8
30 OUT 9
29 GND
OUT 23 10
OUT 22 11
OUT 21 12
OUT 20 13
OUT 19 14
OUT 18 15
GND 16
PLCC44
N.C. 17
2. Block Diagram (case of 4 bit)
COM1
INA
OUT0-13
CLAMP
BLOCK
OUTPUT 1
INB
INC
DECODER
3 OR 4 BIT
IND
OUT27-14
CLAMP
BLOCK
OUTPUT 2
CHIP ENABLE
COM2
– 21 –
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UX-2200CMU/CMC
FO-2150CMU/CMC
3. Description
The L6451 is realized in Multipower BCD Technology which combines isolated DMOS power transistors with CMOS
and Bipolar circuits on the same IC. By using mixed technology it has been possible to optimize the logic circuitry
and the power stage to achieve the best possible performances.
Intended to be used in ink jet PrinterApplications as 4 to 28 (2x14) lines selectable decoder/driver,the L6451 device
driver has the advantages of low power CMOS input and logic, with 28 high current and high voltage DMOS outputs
capable of sustaining a maximum of 40V.
On system power up the output drivers are locked out using the chip enable function : two enable inputs are
available for the different driver banks.
An internal power-on system is implemented in order to avoid wrong output commutation during the supply voltage
transients.
Using a mask option during manufacturing allows a different decoding.
Control of the energy delivered to the print head is made by means of a special circuitry.
All driver outputs are capable of withstanding a contact discharge of ±8kV with the IC biased.
4. Absolute Maximum Ratings
Symbol
VOUT
VCLAMP
IOUT
Parameter
Value
Unit
V
Output voltage
40
Output Clamping Voltage
40
V
Output Continuous Current
Output Peak Current (with duty cycle = 10% TON = 4µs)
Junction Temperature
0.8
A
IPEAK
TJ
2
150
A
°C
V
VDD
Logic Supply Voltage
7
VIN
Input Voltage Range
-0.3V to Vs +0.3
0 to 70
-55 to 150
V
TAMB
TSTG
Operating Temperature Range
Storage Temperature Range
°C
°C
5. Pin Functions
Name
VDD
Function
5V Logic Supply.
GND
Logic and Power Ground.
OUT0 to OUT27 DMOS Output.
CLAMP
This pin has to be connected to the power supply voltage of the head resistors.
Each of the output DMOS have their drain connected with the anode of a protection
diode, all the cathodes of the protection diodes are connected to the clamp pin. In order
to have the device supplied, the CLAMP pin needs to be connected to the power.
INA, INB, INC, IND Decoder inputs.
COM1, COM2
CHIP ENABLE
A low logic input on these pins enables the outputs selected by the decoder inputs.
A logic high enable the chip.
– 22 –
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UX-2200CMU/CMC
FO-2150CMU/CMC
[10] Exploded View
8 Printer unit
59
57
B12
B12
35
51
41
42
43
47
38
34
W1
38
43
58
B12
46
901
11
36
12
W2
49
903
9
52
44
a
B12
50
27
8
W2
B12
52
38
B3
28
7
22
6
39
5
29
40
48
a
31
30
B5
23
B12
45
53
3
B1
902
32
13
4
901
901
2
11
14
1
19
20
21
56
36
16
904
B4
54
45
15
56
55
24
10
25
905
17
18
37
INK SENSOR
PWB
B10
26
B14
Note : Since the parts circled by dots can not be supplied, change it as a unit
– 23 –
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UX-2200CMU/CMC
FO-2150CMU/CMC
[11] Replacement Parts List
PRICE NEW
RANK MARK RANK
PART
DESCRIPTION
PARTS CODE
NO.
[8] Printer unit
1
2
3
4
5
6
7
8
9
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
D
D
C
C
C
C
C
B
C
C
B
B
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
Frame chassis
Carrier cover(K)
Main shaft
Main shaft holder
Belt tension spring
Idler pulley holder
Carrier latch
Carrier latch SP
FFC plate
Main spring B
Timing belt
Idler pulley
Contct pad
Ink felt
Wiper lever
Wiper
Wiper holder
Main spring A
Cap
Cap holder
Casp spring
Guide seal
Barcode label
Capslider
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Maintenance lever
Maintenance base
Printer head cable
Main shaft stoper
Photo interrupter
Deflector A
Ink carrier
Steping CR motor
Paper feed motor
Motor braket
Bearing
34 RMOTZ2137AXZZ
35 LBRC-2006AXZZ
36 LBSHP2095AXZZ
37 LFRM-2192AXZZ
38 LHLDZ2168AXZZ
39 LHLDZ2169AXZZ
40 MLEVP2273AXZZ
41 MLEVP2274AXZZ
42 MSPRC2735XHZZ
43 MSPRC3008AXZZ
44 MSPRD2975AXZZ
45 NBLTK2056AXZZ
46 NGERH2278XHZZ
47 NGERH2279XHZZ
48 NGERH2396AXZZ
49 NGERH2398AXZZ
50 NGERH2399AXZZ
51 NGERH2400AXZZ
52 NROLP2382AXZZ
53 NROLR2380AXZZ
54 NROLR2381AXZZ
55 PCOVP2118AXZZ
56 PGUMM2152AXZZ
57 QCNW-4807AXZZ
58 PSLDM2045AXZZ
59 QCNW-4778AXZZ
(Unit)
AZ
AK
AD
AL
Base frame
AS
AD
AH
AD
AC
AC
AC
AF
AC
AC
AD
AD
AD
AD
AC
AX
AH
AE
AD
AE
AF
AZ
Pinch roller holder
Sensor lever holder
P-in sensor lever
Planet lever
Planet gear spring
Feed spring
Lever spring
Feed belt
Planet gear
N
N
N
Idler gear A
N
N
N
N
N
N
N
N
N
N
PRT feed gear
Secondry gear A
Secondry gear B
Secondry gear C
Pinch roller
PRT feed roller
Exit roller
Sensor cover
Exit rubber
Ground cable
Print shield plate
Printer cable
N
901 0MIMMM7E24MM0
902 0MIOPM300356/
903 0MIOPSA00195/
904 0MIOPM100090/
905 0MIOPSA00100/
BK
AY
BS
AY
AV
N
N
N
N
N
E
C
E
E
E
Carrier stepping motor with pulley ass’y
Carrier shaft
Carrier asm, key “K” ass’y
Frame chasis ass’y
Maintenance group ass’y
– 24 –
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UX-2200CMU/CMC
FO-2150CMU/CMC
COPYRIGHT © 1998 BY SHARP CORPORATION
ALL RIGHTS RESERVED.
No part of this publication may be reproduced,
stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
SHARP CORPORATION
Communication Systems Group
Quality & Reliability Control Center
Higashihiroshima, Hiroshima 739-0192, Japan
Printed in U.S.A.
A9808-2261SS•IS•M
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