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2/99
STATUS INDICATOR RAPs
DocuPrint C55/C55mp/[NC60]
2-27
U7
U7 MOTOR FAULT (MAIN) RAP
The Transfer Drum Home Position Sensor did
not detect Transfer Drum rotation.
(C55/C55mp)
Mechanical bind is the most common cause
of this fault, specifically binding of the auger
in the Print Drum. This is usually (but not
always) accompanied by a clicking noise
from the top of the machine.
If a clicking noise is heard, enter “Normal
Diagnostics” (General Procedures) and
attempt to run the
Motor Test
. Note the
sounds of the machine. Stop the test,
remove the print drum, close the printer, and
run the
Motor Test
again. Note any
changes in the sounds. If there is a
noticeable change in the sound, examine the
Print Drum by opening the Waste Toner trap
door and probing with a small screwdriver. If
this area is clogged, you can remove the left
side cover by removing the trap door and
removing 4 screws. This area can then be
vacuumed out before reassembly.
All Printers, if a thumping noise is heard,
check to see if the Main Drive Motor Belt is
slipping.
INITIAL ACTION
Remove and inspect the Print Drum Module.
Check to ensure that no foreign material is
wedged in the Print Drum Module drive gears.
Rotate the Transfer Drum by hand to ensure
that it moves. Check for any binding caused
by a tucked over Transfer Drum Cleaner Brush
Blade
Reinstall the Print Drum Module.
Switch the power off wait 10 seconds and
switch the power on. Recheck for the fault.
PROCEDURE
Enter IOT normal diagnostics. Scroll to the
MOTOR TEST program and press
Form Feed
[1]
to switch on the motors while observing the
Main Drive Motor.
The Main Drive Motor is rotating.
Y
N
The Main Motor is noisy.
Y
N
Go to BSD 9.3 in Section 7 and
troubleshoot the +24 VDC Interlocked
(CN112-5).
If OK, replace the PCU PWB. If the
problem still exists, replace the Main
Drive Motor.
Go to BSD 9.3 in Section 7 and check
(CN112) to ensure it is plugged in.
If the problem still exists replace the PCU
PWB. If the problem still exists, replace
the Main Drive Motor.
Press
Media Server [2]
to stop the MOTOR
TEST program.
Scroll to the SWITCH SCAN program and
select Scan Row 04. Press
Form Feed [1]
.
Open the Printer. Slowly rotate the Transfer
Drum while observing the Magenta LED.
The Magenta LED switches on and off.
Y
N
A
B
A
B
Go to BSD 9.13 in Section 7 and trouble-
shoot the Transfer Drum Home Position
signal, +5 VDC, and ground (CN103-17,
CN313-2, 1, 3) for an open or a short to
ground.
If the wiring is OK, replace the PCU PWB.
If the Problem still exists replace the
Transfer Drum Home Position Sensor.
Replace the PCU PWB.
Содержание DocuPrint C55
Страница 14: ...SERVICE CALL PROCEDURES 2 99 NOTES 1 6 DocuPrint C55 C55mp NC60 Notes ...
Страница 56: ...OTHER FAULTS RAPs 2 99 NOTES 2 42 DocuPrint C55 C55mp NC60 NOTES ...
Страница 76: ...IMAGE QUALITY SPECIFICATIONS 2 99 NOTES 3 20 DocuPrint C55 C55mp NC60 NOTES ...
Страница 130: ...REPAIRS ADJUSTMENTS 2 99 NOTES 4 42 DocuPrint C55 C55mp NC60 NOTES ...
Страница 216: ...GENERAL PROCEDURES 2 99 NOTES 6 18 DocuPrint C55 C55mp NC60 Notes ...
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