iDP-3221 Service Manual
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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
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