3.3 DIRTY BACKGROUND
- Problem -
1. Dirty background at image density level 4 (manual setting).
2. Copies made in ADS mode have a dirty background.
- Possible Causes -
1. V
L
correction failure
•
Very dirty optics (V
L
correction cannot compensate)
•
Deteriorated exposure lamp (maximum output cannot give sufficient light
intensity)
•
Failure of the dc power supply board
•
Dirty erase lamp unit
2. V
R
correction failure
•
CB (development bias) high voltage supply board failure
•
Poor development bias terminal contact
•
The development bias is grounded
3. The OPC drum is not grounded properly
4. ADS mode
•
Improper ADS Density setting (SP5-106)
•
ADS Sensor board failure
•
CB high voltage supply board failure
•
Incorrect adjustment of the ADS sensor (SP4-201)
•
Sensitivity of the ADS sensor is not correct for the original
5. High toner density
•
Improper setting of the drum charge voltage adjustment (SP2-001)
•
Improper V
SP
pattern bias (SP2-203)
•
Dirty erase lamp unit
6. Drum charge roller thermister error
•
Connector of the drum charge roller thermistor id not connected properly.
•
Broken drum charge roller thermistor
FSM
6-5
FT5535/4527/4522
Summary of Contents for Aficio FT4027
Page 1: ...FT5535 5035 4527 4027 4522 4022 FIELD SERVICE MANUAL ...
Page 4: ...SECTION 1 OVERALL MACHINE INFORMATION ...
Page 9: ...SECTION 2 COMPONENT LAYOUT AND DESCRIPTION ...
Page 10: ...1 MACHINE CONFIGURATION 1 1 COPIER Rev 7 95 FSM 2 1 FT5535 4527 4522 ...
Page 16: ...3 2 DUPLEX COPYING A156 copier A160 A162 copier Rev 7 95 FSM 2 7 FT5535 4527 4522 ...
Page 24: ...SECTION 3 INSTALLATION ...
Page 51: ...SECTION 4 SERVICE TABLES ...
Page 116: ...SECTION 5 REPLACEMENT AND ADJUSTMENT ...
Page 187: ...SECTION 6 TROUBLESHOOTING ...
Page 235: ...SECTION 7 DF61 AUTO REVERSE DOCUMENT FEEDER Machine Code A548 ...
Page 251: ...SECTION 8 PS290 280 PAPER TRAY UNIT Machine Code A549 550 ...
Page 267: ...SECTION 9 PS270 PAPER TRAY UNIT Machine Code A553 ...
Page 282: ...SECTION 10 ST26 20 BIN SORTER STAPLER Machine Code A554 ...
Page 315: ...SECTION 11 ST10 10 BIN SORTER STAPLER Machine Code A555 ...
Page 333: ...SECTION 12 CS220 20 BIN SORTER MINI α Machine Code A556 ...
Page 346: ...SECTION 13 CS130 10 BIN SORTER MICRO α Machine Code A557 ...
Page 357: ...APPENDIX ...
Page 362: ...TECHNICAL SERVICE BULLETINS ...
Page 399: ...Tech Service Bulletin No 4027 4527 5035 5535 4022 4522 010 Page 5 of 6 Continued ...
Page 400: ...Tech Service Bulletin No 4027 4527 5035 5535 4022 4522 010 Page 6 of 6 ...
Page 503: ...Section 1 Overall Machine Information ...
Page 509: ...2 MACHINE CONFIGURATION 2 1 COPIER A204V500 wmf MACHINE CONFIGURATION A207 A208 A211 1 6 SM ...
Page 618: ...SECTION 3 20 BIN SORTER STAPLER ST30 A664 ...