STATUS INDICATOR RAPs
2/99
U6
2-26
DocuPrint C55/C55mp/[NC60]
U6 MOTOR FAULT (DEVELOPER)
RAP
The Developer Drive motor is not running.
NOTE: This problem can be caused by arcing
at the Print Drum Module spring contacts. If
the
U6
code is intermittent and occasionally
accompanied by a high pitch squeal, clean and
reform the spring contacts. It the problem
persists replace the Print Drum Module.
INITIAL ACTION.
Remove and inspect both developer modules.
Check to ensure no foreign material is wedged
in the drive gears and the gears on both
modules rotate freely.
Reinstall both developer modules.
Check the Toner Collector for “layered” toner
(sand-art effect). If layered toner is present,
refer to OF8 Arcing RAP.
Switch the power off wait 10 seconds and
switch the power on. Recheck for the fault.
PROCEDURE
Set up the meter to read +5 VDC. Connect
the meter to CN117-2 and ground (
−
).
Enter IOT normal diagnostics. Scroll to the
MOTOR TEST program and press
Form Feed
[1]
to switch on the motors while observing the
meter.
The meter reads + 5 VDC before the motor
program starts and 0 VDC when the motor
program is running.
Y
N
Set up the meter to read +24 VDC.
Connect the meter to CN117-3 and ground
(
−
).
A
B
A
B
The meter reads + 24 VDC.
Y
N
Go to BSD 9.5 in Section 7 and
troubleshoot the +24 VDC (CN117-3)
for an open.
If no open exists, replace the PCU
PWB.
Go to BSD 9.5 in Section 7 and trouble-
shoot the Developer Motor On signal
(CN117-2) for an open.
If no open exists, replace the PCU PWB.
If the problem still exists, replace the
Developer Drive Motor.
Press
Media Server [2]
to stop the MOTOR
TEST program.
Set up the meter to read +5 VDC. Connect
the meter to CN117-1 and ground (
−
).
Press
Form Feed [1]
to switch on the motors
while observing the meter.
The meter reads + 5 VDC before the motor
program starts and 0 VDC when the motor
program is running.
Y
N
Go to BSD 9.5 in Section 7 and trouble-
shoot the Developer Motor Lock signal
(CN117-1) for an open.
If no open exists, replace the PCU PWB.
If the problem still exists, replace the
Developer Drive Motor.
Go to BSD 9.5 in Section 7 and troubleshoot
the GND (CN117-4) for an open.
If OK, replace the PCU PWB. If the problem
still exists, replace the Developer Drive Motor.
Summary of Contents for DocuPrint C55
Page 14: ...SERVICE CALL PROCEDURES 2 99 NOTES 1 6 DocuPrint C55 C55mp NC60 Notes ...
Page 56: ...OTHER FAULTS RAPs 2 99 NOTES 2 42 DocuPrint C55 C55mp NC60 NOTES ...
Page 76: ...IMAGE QUALITY SPECIFICATIONS 2 99 NOTES 3 20 DocuPrint C55 C55mp NC60 NOTES ...
Page 130: ...REPAIRS ADJUSTMENTS 2 99 NOTES 4 42 DocuPrint C55 C55mp NC60 NOTES ...
Page 216: ...GENERAL PROCEDURES 2 99 NOTES 6 18 DocuPrint C55 C55mp NC60 Notes ...
Page 252: ...GENERAL PROCEDURES 2 99 NOTES 6 54 DocuPrint C55 C55mp NC60 NOTES ...
Page 272: ...GENERAL PROCEDURES 2 99 NOTES 6 74 DocuPrint C55 C55mp NOTES ...
Page 274: ...GENERAL PROCEDURES 2 99 NOTES 6 76 DocuPrint NC60 NOTES ...