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Chapter 1 Troubleshooting
Step
Check Yes No
6
Checking 24 V power line
Remove SHIELD PLATE HVPS (PL12.1.18).
Check if P/J10 is connected to HVPS/MCU.
Remove EP CARTRIDGE.
Check as follows, if each voltage is 24VDC.
P/J10-1 <=> P/J10-4
P/J10-2 <=> P/J10-5
P/J10-3 <=> P/J10-6
P/J10-8 <=> P/J10-7
Go to step 7.
Go to FIP2.1
LVPS.
7
Checking CLUTCH REGI (PL5.1.23)
Remove SHIELD PLATE HVPS (PL12.1.18).
Disconnect P/J243.
Remove EP CARTRIDGE.
Does FAN MAIN rotate, when the power is turned ON?
Go to FIP2.15
CLUTCH REGI.
Go to step 8.
8
Checking OPERATION PANEL
Disconnect HARNESS ASSY PANEL from PWBA ESS.
Remove EP CARTRIDGE.
Does FAN MAIN rotate, when the power is turned ON?
Check with the wind from exhaust on back of the printer.
Go to step 9. Go to step 10.
9
Checking HARNESS ASSY PANEL for continuity
Disconnect HARNESS ASSY PANEL from PWBA ESS.
Is there any open circuit or short circuit on the harness,
and is every cable continuous?
Replace
OPERATIONAL
PANEL. (RRP1.4)
Replace
HARNESS ASSY
PANEL.
10
Checking ROS ASSY
Disconnect P/J13, P/J14, P/J16 and P/J17 from HVPS/
MCU.
Remove EP CARTRIDGE.
Does FAN MAIN rotate, when the power is turned ON?
Replace ROS
ASSY. (RRP8.1)
Go to step 11.
11
Checking PWBA FEEDER
Disconnect P/J20 from HVPS/MCU.
Remove EP CARTRIDGE.
Does FAN MAIN rotate, when the power is turned ON?
Replace PWBA
FEEDER 550.
(RRP20.8)
Go to step 12.
12
Checking INTERLOCK S/W
Disconnect P/J44 and P/J45 from LVPS.
Are the followings continuous when pushing the lever of
INTERLOCK S/W, and not continuous when releasing?
P/J44-1 <=> P/J44-3
P/J45-1 <=> P/J45-3
Go to step 13.
Replace
INTERLOCK
S/W.
(RRP8.5, 12.5)
13
Checking SWITCH I/L ASSY
Disconnect P/J411.
Is it continuous between P/J411-2 <=> P/J411-1, when
SWITCH I/L ASSY is pushed, and is not when released?
Go to step 14.
Replace SWITCH
I/L ASSY.
(RRP1.6)
14
Checking CLUTCH ASSY PH
Disconnect P/J242 and P/J247 from HARNESS ASSY
TRAY 1/2.
Remove EP CARTRIDGE.
Does the FAN MAIN rotate, when the power is turned ON?
Go to FIP2.16
CLUTCH ASSY
PH.
Go to step 15.
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