2HA/2HB
1-4-19
C6400
Zero-crossing signal problem
The engine PWB does not detect the
zero-crossing signal for the time speci-
fied below.
At power-on: 3 s
Others: 5 s
Poor contact in the
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective power
supply PWB.
Check if the zero-crossing signal is output
from YC2-5 on the power supply PWB. If
not, replace the power supply PWB.
Defective engine
PWB.
Replace the engine PWB if C6400 is
detected while YC2-5 on the power supply
PWB outputs the zero-crossing signal.
C7750
Drum type mismatch problem A
The drum type does not mach with the
software.
Defective software
of the engine PWB.
Rewrite the software of the engine PWB.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
C7760
Drum type mismatch problem B
The drum type is undefined.
Defective software
of the engine PWB.
Rewrite the software of the engine PWB.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
C7800
Broken external temperature ther-
mistor
The input voltage is 0.5 V or less.
Poor contact in the
humidity sensor
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective humidity
sensor.
Replace the drawer PWB and check for cor-
rect operation.
C7810
Short-circuited external temperature
thermistor
The input voltage is 4.5 V or more.
Poor contact in the
humidity sensor
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective humidity
sensor.
Replace the drawer PWB and check for cor-
rect operation.
Code
Contents
Remarks
Causes
Check procedures/corrective measures
Summary of Contents for d-Copia 1600
Page 1: ...SERVICE MANUAL Published in October 2005 842HB110 First Edition d Copia 1600 d Copia 2000...
Page 3: ...Revision history Revision Date Replaced pages Remarks...
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Page 10: ...This page is intentionally left blank...
Page 14: ...2HA 2HB 1 4 30 This page is intentionally left blank...
Page 20: ...2HA 2HB 1 4 30 This page is intentionally left blank...
Page 126: ...2HA 2HB 1 4 30 This page is intentionally left blank...
Page 162: ...2HA 2HB 1 4 30 This page is intentionally left blank...
Page 180: ...2HA 2HB 1 4 30 This page is intentionally left blank...
Page 213: ...INSTALLATION GUIDE FOR THE 300 SHEET CASSETTE...
Page 220: ...INSTALLATION GUIDE FOR THE DOCUMENT PROCESSOR...
Page 231: ...INSTALLATION GUIDE FOR THE DUPLEX UNIT...
Page 239: ...INSTALLATION GUIDE FOR THE Printing System X...
Page 242: ......