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Chapter 1 Troubleshooting
FIP1.28 SENSOR REGI
Step Check
Yes
No
Possible causes:
SENSOR REGI (PL5.1.30)
ACTUATOR B (PL5.1.17)
150 FEEDER ASSY (PL5.1.1)
HARNESS ASSY TRAY1 (PL5.1.37)
HARNESS ASSY CHUTE (PL12.1.17)
HVPS/MCU (PL12.1.19) LVPS (PL12.1.5)
1
Checking ACTUATOR B for operation and shape
Remove 150 FEEDER ASSY. (RRP5.1)
Does ACTUATOR B operate smoothly?
Is the flag of ACTUATOR B formed normally to shield
the Sensor detecting point?
Check if the flag of ACTUATOR B is formed normally
again, pushing ACTUATOR B by inserting a mini screw-
driver from the paper entrance space at the lower and
side sections each of 150 FEEDER ASSY.
With tool Go to
step 2. Without
tool Go to step 3.
Replace ACTUA-
TOR B.
2
Checking SENSOR REGI (1)
Connect the connector J241 of HARNESS ASSY
TRAY1 to SENSOR REGI, with 150 FEEDER ASSY
removed.
Remove EP CARTRIDGE.
Close COVER OPEN (PL1.1.2).
Does the number of Sensor/Switch Check increase by
one, by moving ACTUATOR B with a mini screwdriver?
Check using Chapter 2 Diagnostic [Sensor/Switch
Check].
Replace HVPS/
MCU.
(RRP12.19)
Go to step 4.
3
Check SENSOR REGI (2)
Connect the connector J241 of HARNESS ASSY
TRAY1 to SENSOR REGI, with 150 FEEDER ASSY
removed.
Remove EP CARTRIDGE.
Close COVER OPEN (PL1.1.2).
Is the voltage across P/J24-11(+) and P/J24-10(-), 3.3
VDC when ACTUATOR B is pushed, and 0 VDC when
released?
Measure the voltage by moving ACTUATOR B with a
mini screwdriver.
Replace HVPS/
MCU.
(RRP12.19)
Go to step 4.
4
Checking the power to SENSOR REGI
Remove EP CARTRIDGE.
Is the voltage across P/J24-9(+) and P/J24-10(-) on
HVPS/ MCU, about 3.3 VDC?
Go to step 5.
Go to step 7.
5
Checking HARNESS ASSY CHUTE for continuity
Disconnect P/J24 from HVPS/MCU.
Disconnect P/J245.
Is there continuity between
J24-9 and J245-10?
J24-10 and J245-9?
J24-11 and J245-8?
Go to step 6.
Replace HAR-
NESS ASSY
CHUTE.
