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Trouble-
shooting
BLOWN FUSE CONDITIONS
SM 4-25
B079/B082
Component
(Symbol)
CN Condition
Symptom
Open
The Paper End indicator lights even if paper is
placed in the lower paper tray.
Lower Paper End
(S18)
214-8
(IOB)
Shorted
The Paper End indicator does not light even if
there is no paper in the lower paper tray.
Open
The Paper Jam indicator will light whenever a
copy is made.
Upper Relay
(S19)
220-5
(IOB)
Shorted
The Paper Jam indicator lights even if there is
no paper.
Open
The Paper Jam indicator will light whenever a
copy is made.
Lower Relay
(S20)
214-5
(IOB)
Shorted
The Paper Jam indicator lights even if there is
no paper.
Open No
symptom
Transfer Belt
Position (S21)
202-A10
(IOB)
Shorted
SC403 is displayed
4.2.2 SWITCHES
Component
(Symbol)
CN Condition
Symptom
Open
“Doors/Covers Open” is displayed even if the
right lower cover is closed.
Right Lower
Cover (SW1)
216-4
(IOB)
Shorted
The LCD goes blank when the lower cover is
opened.
Open
The machine does not turn on.
Main (SW3)
102-1~4
(PSU)
Shorted
The machine does not turn off.
Open
“Doors/Covers Open” is displayed even if the
front cover is closed.
Front Cover
Safety (SW4)
107-1
(PSU)
Shorted
“Doors/Covers” Open is not displayed even if the
front cover is opened.
4.3 BLOWN FUSE CONDITIONS
Rating
Fuse
115V
210 ~ 230V
Symptom at power on
Power Supply Board
FU1
6.3A / 125V
6.3A / 250V
“Doors/Covers Open” is displayed
FU2
6.3A / 125V
6.3A / 250V
“Doors/Covers Open” for the finisher is
displayed
FU3
6.3A / 125V
6.3A / 250V
Paper end condition
FU5
6.3A / 125V
6.3A / 250V
SC302, or SC403, or SC405 displayed
FU6
3.15A/125V 3.15A/250V
FU9
4A/125V 4A/250V
FU101
15A / 125V
---
No response
FU102
10A / 125V
5A / 250V
No response
FU103
2A / 125V
1A / 250V
Normal operation (optional heaters do not work)
Summary of Contents for B079
Page 1: ...B079 B082 SERVICE MANUAL 001634MIU RICOH GROUP COMPANIES ...
Page 2: ......
Page 3: ...B079 B082 SERVICE MANUAL RICOH GROUP COMPANIES ...
Page 4: ......
Page 5: ...B079 B082 SERVICE MANUAL 001634MIU ...
Page 6: ......
Page 8: ......
Page 10: ......
Page 12: ......
Page 26: ......
Page 28: ......
Page 29: ...INSTALLATION ...
Page 30: ......
Page 101: ...PREVENTIVE MAINTENANCE ...
Page 102: ......
Page 107: ...REPLACEMENT AND ADJUSTMENT ...
Page 108: ......
Page 196: ......
Page 197: ...TROUBLESHOOTING ...
Page 198: ......
Page 221: ...Trouble shooting SERVICE CALL CONDITIONS SM 4 23 B079 B082 INTENTIONALLY LEFT BLANK ...
Page 225: ...SERVICE TABLES ...
Page 226: ......
Page 330: ......
Page 331: ...DETAILED SECTION DESCRIPTIONS ...
Page 332: ......
Page 436: ......
Page 437: ...SPECIFICATIONS ...
Page 438: ......
Page 448: ......
Page 449: ...BOOKLET FINISHER B546 ...
Page 450: ......
Page 497: ...AUTO REVERSE DOCUMENT FEEDER B541 ...
Page 498: ......
Page 525: ...LARGE CAPACITY TRAY B543 ...
Page 526: ......
Page 528: ......
Page 543: ...PAPER TRAY UNIT B542 ...
Page 544: ......
Page 546: ......
Page 565: ...1 BIN TRAY B544 ...
Page 566: ......
Page 568: ......
Page 576: ......
Page 577: ...1000 SHEET FINISHER B408 ...
Page 578: ......
Page 580: ......
Page 605: ...TWO TRAY FINISHER B545 ...
Page 606: ......
Page 643: ...BRIDGE UNIT B538 ...
Page 651: ...PRINTER OPTION B548 ...
Page 652: ......
Page 703: ...FAX OPTION B547 ...
Page 704: ......
Page 708: ......
Page 851: ...TECHNICAL SERVICE BULLETINS ...
Page 853: ...BRIDGE UNIT B538 ...
Page 908: ...Trouble shooting SERVICE CALL CONDITIONS SM 4 23 B079 B082 INTENTIONALLY LEFT BLANK ...
Page 941: ...FIRMWARE HISTORY ...