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Chapter 1 Troubleshooting
FIP4.12 CLUTCH PR-REGI
Step Check
Yes
No
Possible causes:
CLUTCH PR-REGI (PL20.2.22)
Option 550 Paper Feeder 550 PAPER CASSETTE
(PL20.3.50)
PWBA FEEDER 550 (PL20.1.34)
HARNESS ASSY CLSNR1 (PL20.2.31)
HARNESS ASSY CLSNR2 (PL20.1.36)
HARNESS ASSY FDR2 (PL20.1.5)
HVPS/MCU (PL12.1.19)
LVPS (PL12.1.5)
HARNESS ASSY FDR1 (PL12.1.21)
1
Checking HARNESS ASSY CLSNR1 for continuity
Disconnect P/J855.
Disconnect P/J854. Is each cable between J855 and
J854 continuous?
Go to step 2.
Replace HAR-
NESS ASSY
CLSNR1.
2
Checking HARNESS ASSY CLSNR2 for continuity
Disconnect P/J85 from PWBA FEEDER 550.
Disconnect P/J855.
Is each cable between J85 and J855 continuous?
Go to step 3.
Replace HAR-
NESS ASSY
CLSNR2.
3
Checking the resistance of CLUTCH PR-REGI
Is the resistance of the wire wound resistor between P/
J854-1 and P/J854-2 of CLUTCH PR-REGI, 172 ohm
+/-10% (at 20 °C)?
Go to step 4.
Replace CLUTCH
PR-REGI.
(RRP20.15)
4
Checking PWBA FEEDER 550 for continuity
Disconnect P/J83 from PWBA FEEDER 550.
Is there continuity between
P83-3 and P85-3?
Go to step 5.
Replace PWBA
FEEDER 550.
(RRP20.8)
5
Checking HARNESS ASSY FDR2 for continuity
Remove HARNESS ASSY FDR2.
Is there continuity between J2083 and J83?
Go to step 6.
Replace HAR-
NESS ASSY
FDR2.
6
Checking HARNESS ASSY FDR1 for continuity
Remove HARNESS ASSY FDR1.
Is there continuity between J20 and J2083?
Go to step 7.
Replace HAR-
NESS ASSY
FDR1.
7
Checking the power to CLUTCH PR-REGI
Remove EP CARTRIDGE.
Is the voltage across P20-10(+) and P20-9(-) on HVPS/
MCU, 24 VDC?
Replace
CLUTCH PR-
REGI.
(RRP20.15)
Go to step 8.
8
Checking HVPS/MCU for continuity
Disconnect P/J10 from HVPS/MCU.
Is there continuity between P10-1 and P20-10?
Go to FIP1.24
LVPS.
Replace HVPS/
MCU. (RRP12.10)
