1 – 44
Chapter 1 Troubleshooting
9
Checking /ROSMOT ON signal of Scanner Motor
Install EP CARTRIDGE.
Close COVER OPEN (PL1.1.2).
Is P/J13-3(+) and P/J13-2(-) on HVPS/MCU, 0 V just
after when the power is turned ON, and 5VDC 10 sec-
onds after stopping MAIN MOTOR?
Go to step 11.
Go to step 10.
10
Checking HARNESS ASSY ROS for continuity
Disconnect P/J13 from HVPS/MCU.
Is each cable of P/J13 and P/J130 continuous?
Replace HVPS/
MCU.
(RRP12.10)
Replace HAR-
NESS ASSY ROS.
11
Checking HARNESS ASSY ROS for continuity
Disconnect P/J17 and P/J16 from HVPS/MCU.
Disconnect P/J170 and P/J160 from ROS ASSY.
Is there continuity between
P/J17 and P/J170?
P/J16 and P/J160?
Go to step 12.
Replace HAR-
NESS ASSY ROS.
12
Checking SOS power circuit of ROS ASSY
Disconnect P/J140 from ROS ASSY.
Is there continuity between
P/J140-8 and P/J201-1?
P/J140-6 and P/J201-2?
P/J140-7 and P/J201-3?
Go to step 13.
Replace ROS
ASSY. (RRP8.1)
13
Checking after replacing HVPS/MCU
Replace HVPS/MCU. (RRP12.10)
Does the problem still occur, after replacement?
Go to step 14.
End of work
14
Checking after replacing ROS ASSY
Replace ROS ASSY. (RRP8.1)
Does the problem still occur, after replacement?
Go to FIP1.42
Electrical Noise.
End of work
Step Check
Yes
No
