7-4
Troubleshooting
>
Image formation problems
[CONFIDENTIAL]
(1-1)No image appears (entirely white)
Print example
Cause of trouble
1 No or defective developing bias output.
2 Failure of the rotation of the developing roller.
3 Defective transfer.
4 Laser is not dispersed from the laser scanner unit (LSU).
Defective part
Check description
Corrective Action
1
Developing unit
Generate PGs by service mode and
check the following :
Check whether the developer drive
gear is damaged.
If the gear is damaged, replace the developer unit.
Check the developing roller is
rotated by hand.
If the developer unit is in fault, replace the devel-
oper unit.
Check contamination and deforma-
tion on the terminals of developer
unit or the high-voltage PWB1.
If the connecting terminals are dirty, clean.
If the connecting terminals are deformed, correct for
a proper conduction.
2
High voltage PWB
Check the connection of the con-
nector(s) and the high voltage PWB.
Or, verify conduction of the wires.
Reinsert the connector if it its connection is loose.
Replace the cable if it has no conduction.
High voltage PWB (YC101) and control
PWB (YC19)
3
Laser scanner unit
(LSU)
Check the connection of the con-
nectors.
Or, verify conduction of the wires.
1. Reinsert the FFC wire if it its connection is
loose.
Replace the cable if it has no conduction.
2. Replace the LSU.
4
Control PWB
A control signal is not derived from
the control PWB.
Replace the control PWB.
Содержание CA-3100
Страница 118: ...4 20 Maintenance Assembly and disassembly a d c f e e c ...
Страница 131: ...4 33 Maintenance Assembly and disassembly a b c c d c ...
Страница 134: ...4 36 Maintenance Assembly and disassembly c b a b ...
Страница 146: ...4 48 Maintenance Assembly and disassembly Optional items a b c d ...
Страница 148: ...4 50 Maintenance Assembly and disassembly Optional items a b c ...
Страница 243: ...8 16 PWBs Description for PWB CONFIDENTIAL 5 Operation PWB 5 1 PWB photograph 5 2 Connector position YC1 1 12 YC2 1 2 ...
Страница 268: ...付録 Installation guide CONFIDENTIAL 9 5 Installation guide 1 IB 50 IB 50 Network interface INSTALLATION GUIDE ...
Страница 271: ... CONFIDENTIAL 2 IB 51 IB 51 Wireless Interface INSTALLATION GUIDE ...
Страница 274: ...付録 Installation guide CONFIDENTIAL 3 IB 32B IB 32B IEEE1284 Interface INSTALLATION GUIDE ...
Страница 277: ...付録 Installation guide CONFIDENTIAL 4 PF 3110 PF 3110 500 sheet 1 Paper feeder INSTALLATION GUIDE ...
Страница 278: ... CONFIDENTIAL PF 3110 PF 3110 PF 3110 PF 3110 PF 3110 PF 3110 For Canada CAN ICES 3B NMB 3B 1 2 ...
Страница 279: ... CONFIDENTIAL Printed in China 303SA5614001 First edition 2017 11 For Legal Folio OficioII 1 1 1 1 2 2 2 2 ...
Страница 280: ...付録 Installation guide CONFIDENTIAL 5 PF 3100 PF 3100 2000 sheets 1 bulk feeder INSTALLATION GUIDE ...
Страница 282: ... CONFIDENTIAL 3 5 6 4 1 2 1 2 3 1mm 㟝㫴G㤵㣠 1 2 㛅 G㣙㾌 PF 3100 㦹㢨G㣰G㥐ᶤ ...
Страница 283: ... Installation guide 6 HD 6 HD 7 HD 6 HD 7 INSTALLATION GUIDE ...
Страница 285: ... Installation guide 7 CA 3100 CA 3100 INSTALLATION GUIDE ...
Страница 287: ... CONFIDENTIAL B 6 B 7 B 8 b c b c b c b c B 9 d d d c d c d c B 4 B 5 c b c b b c d c b c d c d d ...