OKIDATA MICROLINE 320 - Page 5

ii
3.3.9 Carriage Cable ............................................................................................ 3-13
3.3.10 Backup Roller Holder Assy ........................................................................ 3-14
3.3.11 Platen Assy ................................................................................................. 3-15
3.3.12 Driver Board (SDDV) .................................................................................. 3-16
3.3.13 LF Motor...................................................................................................... 3-17
3.3.14 Operation Panel PCB (LEOP).................................................................... 3-18
3.3.15 Control/Power Supply Board (SDCT) ........................................................ 3-19
3.3.16 Transformer Assy........................................................................................ 3-20
3.3.17 Change Lever and Gears........................................................................... 3-21
3.3.18 Carriage Shaft ............................................................................................. 3-22
3.3.19 Paper Pan ................................................................................................... 3-23
3.3.20 Rear Tractor Assy ...................................................................................... 3-24
3.3.21 Rear Pressure Assy ................................................................................... 3-25
3.3.22 Switch Lever ............................................................................................... 3-26
4. ADJUSTMENT....................................................................................................................... 4-1
5. CLEANING AND LUBRICATION.......................................................................................... 5-1
5.1 Cleaning ..................................................................................................................... 5-1
5.2 Lubrication .................................................................................................................. 5-3
6. TROUBLESHOOTING AND REPAIR................................................................................... 6-1
6.1 Items to Check Before Repair .................................................................................. 6-1
6.2 Troubleshooting Table ............................................................................................... 6-1
6.3 Lamp Display ............................................................................................................. 6-3
6.4 Connection Circuit Check for Printhead and SP/LF Motor ...................................... 6-6
6.5 Troubleshooting Flow Chart....................................................................................... 6-9
APPENDIX
A. PCB LAYOUT ............................................................................................................A-1
B. SPARE PARTS LIST .................................................................................................B-1
C. RS-232C Serial Interface Board (OPTION) ..............................................................C-1
1. General ..................................................................................................................C-1
2. Operation Description ............................................................................................C-2
3. Troubleshooting Flowchart ....................................................................................C-7