Service manual

iDP-3221 Service Manual
–
3
–
CITIZEN
C
CC
CO
OO
ON
NN
NT
TT
TE
EE
EN
NN
NT
TT
TS
SS
S
1. HANDLING AND MAINTENANCE OF PRINTER ..........................................................................5
2. SPECIFICATIONS ...............................................................................................................................6
2.1 Basic Specifications ....................................................................................................................6
3. MECHANISMS AND OPERATING PRINCIPLES ..........................................................................7
3.1 Power Transmission and Paper Feed Mechanism....................................................................7
3.2 Platen Roller Attaching/Detaching Mechanism .......................................................................8
3.3 Sensor Mechanism......................................................................................................................8
3.3.1 Paper Sensor...................................................................................................................8
3.3.2 Paper Near-end Sensor..................................................................................................9
3.4 Print Head Mechanism...............................................................................................................9
3.4.1 Drive Control Overview .................................................................................................9
3.4.2 Print Data and Print Positions....................................................................................10
4. DISASSEMBLY AND REASSEMBLY ..............................................................................................11
4.1 Disassembly Procedure.............................................................................................................11
4.2 Reassembly Procedure..............................................................................................................18
5. TROUBLESHOOTING ......................................................................................................................19
5.1 Troubleshooting Procedure..………………………………………………………………..………19
5.2 Troubleshooting Guide.. ..…………………………………………………………………….……..19
6. SERVICE PARTS LIST......................................................................................................................23
6.1 Parts List for Mechanism.........................................................................................................23
6.2 Disassembly Drawing...............................................................................................................25
6.3 Parts List for Control PCB Assy .............................................................................................27
6.4 Parts Layout Drawing..............................................................................................................30
6.4.1 Control PCB Assy 3221-01 (Serial Interface D-sub 25).............................................30
6.4.2 Control PCB Assy 3221-02 (Parallel Interface)..........................................................32
7. DRAWING...........................................................................................................................................34
7.1 Block Diagram..........................................................................................................................35
7.2 Circuit Diagram........................................................................................................................36