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1-4-21
7100
Toner sensor error
Sensor output value of 930 or
more continuously for 5 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Toner sensor and drum PWB (YC3)
Drum connect PWB(YC2) and relay-L PWB
(YC3)
Relay-L PWB(YC1) and engine PWB (YC2)
Defective toner
sensor.
Replace the developer unit.
(See Page 1-5-13)
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-22).
7400
Developer unit non-install-
ing error
Sensor output value of 31 or
less continuously for 5 s.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Toner sensor and drum PWB (YC3)
Drum connect PWB(YC2) and relay-L PWB
(YC3)
Relay-L PWB(YC1) and engine PWB (YC2)
Defective toner
sensor.
Replace the developer unit.
(See Page 1-5-13)
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-22).
7410
Drum unit type mismatch
error
The drum PWB EEPROM
does not communicate
normally.
Absence of the drum unit
is detected.
Defective connec-
tor cable or poor
contact in the con-
nector.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
Drum unit and drum connect PWB (YC1)
Drum connect PWB(YC2) and relay-L PWB
(YC3)
Relay-L PWB(YC1) and engine PWB (YC2)
Defective toner
sensor.
Replace the drum unit.
(See Page 1-5-13)
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation (see page 1-5-22).
Code
Contents
Causes
Check procedures/
corrective measures
Summary of Contents for PG L2555
Page 1: ...SERVICE MANUAL PG L2555 PG L2550 PG L2545 PF 320 PF 3100...
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Page 67: ...1 3 24 This page is intentionally left blank...
Page 107: ...1 4 40 This page is intentionally left blank...
Page 109: ...1 5 2 Figure 1 5 2...
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Page 194: ...2 4 12 This page is intentionally left blank...
Page 199: ...Installation Guide 500 sheets paper feeder Installation Guide...
Page 201: ...Printed in China 303NY5631002 Rev 1 2012 8 G G G G G G...
Page 202: ...2000 sheets bulk feeder Installation Guide...
Page 204: ...Printed in China 303KF5632002 Rev 1 2012 7 1 2 3 4 1 2 3 1mm PF 315...
Page 205: ...SSD HD 6 HD 7 Installation Guide...
Page 206: ......
Page 207: ......
Page 208: ...IEEE1284 Interface Installation Guide...
Page 211: ...Network interface Installation Guide...
Page 214: ......
Page 215: ...OS...
Page 216: ...Wireless LAN interface Installation Guide...
Page 219: ...SERVICE MANUAL Published in August 2012 843NY110 3NYSM060 First Edition PF 320...
Page 224: ...1 1 3 1 1 3 Machine cross section Figure 1 1 2 Machine cross section Paper path...
Page 249: ...SERVICE MANUAL Published in August 2016 843S3110 3S3SM060 First edition PF 3100...
Page 252: ...2 4 Appendixes 2 4 1 Wiring diagram 2 4 1...
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