OKIDATA Okipage 16n, Service Manual

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Table of Contents TOC - 3 OKIPAGE 16n
Service Manual, P/N 59274401
7 Communications with the host cannot be performed via the parallel interface. ............ 6 - 32
8 Data cannot be received through the OKI HSP interface ............................................... 6 - 33
9 Synchronous serial I/O error (ERROR 74)..................................................................... 6 - 34
6.5.3 Image troubleshooting ...................................................................................................................... 6 - 35
1 Image are light or blurred ............................................................................................... 6 - 36
2 Dark background density ................................................................................................ 6 - 37
3 Black paper is output. ..................................................................................................... 6 - 37
4 Black belts or stripes in the vertical direction ................................................................ 6 - 38
5 Cyclic error ..................................................................................................................... 6 - 39
6 Print voids ....................................................................................................................... 6 - 40
7 Poor fusing ...................................................................................................................... 6 - 41
8 White belts or streaks in the vertical direction ............................................................... 6 - 42
9 Snowy print of high density pattern ............................................................................... 6 - 43
10 Blockly faded print ......................................................................................................... 6 - 43
7. WIRING DIAGRAM ........................................................................................................... 7 - 1
7.1 Interconnect Signal Diagram ............................................................................................ 7 - 1
7.2 PCB Layout ...................................................................................................................... 7 - 2
7.3 Resistance Check .............................................................................................................. 7 - 5
7.4 Program/Font ROM Location ........................................................................................... 7 - 7
8. PARTS LIST ........................................................................................................................... 8 - 1
Printer Unit (Figure 8-1 ) ........................................................................................................... 8 - 2
Main Chassis Unit (Figure 8-2 ) 1 of 2 ...................................................................................... 8 - 4
Main Chassis Unit (Figure 8-2 ) 2 of 2 ...................................................................................... 8 - 6
Front Feeder Unit (Figure 8-3 ) ................................................................................................. 8 - 8
Base Unit (Figure 8-4 ) ............................................................................................................ 8 - 10
APPENDIX A: CENTRONICS PARALLEL INTERFACE .................................................. A - 1
APPENDIX B: HIGH CAPACITY SECOND PAPER FEEDER MAINTENANCE .......... B - 1
Preface ...................................................................................................................................... B - 1
1.
Outline ............................................................................................................................. B - 2
1.1 Functions ............................................................................................................................................. B - 2
1.2 External View and Component Names ............................................................................................... B - 2
2. Mechanism Description ................................................................................................... B - 3
2.1 General Mechanicsm .......................................................................................................................... B - 3
2.2 Hopper Mechanism ............................................................................................................................. B - 4
3. Parts Replacement ........................................................................................................... B - 5
3.1 Precautions Concerning Parts Replacement ....................................................................................... B - 5
3.2 Parts Layout ........................................................................................................................................ B - 7
3.3 Parts Replacement Methods ............................................................................................................... B - 8
3.3.1 Idle rollers ........................................................................................................................................... B - 9
3.3.2 AOLT-PCB ....................................................................................................................................... B - 10
3.3.3 Hopping motor .................................................................................................................................. B - 11
3.3.4 Feed roller ......................................................................................................................................... B - 12
3.3.5 Hopping roller rubber ....................................................................................................................... B - 13
3.3.6 Side frame (L) assy ........................................................................................................................... B - 14
3.3.7 Side frame (R) assy ........................................................................................................................... B - 15