Canon imageRUNNER ADVANCE C350 series Service Manual page 680

Error Detail
Location Item
code Code
E202 0001 04 Title Scanner Unit HP error
Detection The HP of the Scanner Unit could not be detected when starting
description scanning operation.
Remedy [Related parts]
- Harnesses from the Reader Assembly HP Sensor to the Main
Controller PCB
1. Reader Assembly HP Sensor (PS01/J913) to Relay
Connector (3P) (Unit of replacement: CABLE, HOME POSITION
SENSOR)
2. Relay Connector (3P) to Main Controller PCB (UN81/J8103)
(Unit of replacement: CABLE, READER MAIN)
- Harness between the Reader Motor (M01/J901) and the Main
Controller PCB (UN81/J8103) (Unit of replacement: CABLE,
READER MAIN)
- Reader Motor (M01) (Unit of replacement: MOTOR,
STEPPING)
- CIS HP Sensor (PS01) (Unit of replacement: PHOTO
INTERRUPTER)
- BOOK Motor (Unit of replacement: MOTOR, STEPPING)
- Pulley Gear 85T/20T (Unit of replacement: GEAR, 85T/20T)
- Carriage Timing Belt (Unit of replacement: BELT, TIMING,
COGGED)
- Idler Pulley (Unit of replacement: PULLEY, IDLER)
- Idler Pulley Holder (Unit of replacement: READER
ASSEMBLY)
- FB Shaft (Unit of replacement: READER ASSEMBLY)
- Electrolytic capacitor on the Main Controller PCB (C8002) (Unit
of replacement: MAIN CONTROLLER PCB ASSEMBLY)
- 24V power supply for driving the Reader on the Main
Controller PCB side (J7003/pin 1) (Unit of replacement: MAIN
CONTROLLER PCB ASSEMBLY)
- Harness between the Main Controller PCB (UN81/J7003)
and the Low-voltage Power Supply PCB (UN01/J313) (Unit of
replacement: CABLE, POWER SUPPLY)
- Low-voltage Power Supply PCB (UN01) (Unit of replacement:
POWER SUPPLY ASSEMBLY)
[Points to note at work] When checking the harness/cable or
connector, perform the following work.
1. Disconnect and then connect the connector to check that
there is no bent pin and cable disconnection.
2. Visually check that the harness is not caught or open circuit.
3. If there is any error, replace the corresponding harness/cable.
7
Error•Jam•Alarm > Error Code > Error Code Details
Description
7 Error•Jam•Alarm > Error Code > Error Code Details
Error Detail
Location Item
code Code
Remedy [Remedy] Perform the following in the order while checking
whether the error is cleared.
1. Check the harness between the Reader Assembly HP Sensor
and the Main Controller PCB.
2. Check the harness between the Reader Motor and the Main
Controller PCB.
3. At initial operation of the Reader startup after the main power
is turned ON, check if the Reader Motor operates (whether the
Scanner Unit moves or operation sound is heard). If it operates,
move the Carriage Timing Belt by hand and check if load is
appropriate.
a. If it is appropriate, replace the CIS HP Sensor.
b. If it is not appropriate (overloaded), replace the following
parts.
- Stepping Motor
- Z85_T20 Pulley Gear
- Carriage Timing Belt
- Idler Pulley
- Idler Pulley Holder
4. Check for soiling or scar on the surface of the FB Shaft on
which the Scanner Unit is installed. If there is soiling or scar,
replace the FB Shaft.
5. Measure the electrolytic capacitor on the Main Controller
PCB using a tester. If the measurement value is 24V, replace
the Main Controller PCB.
6. Measure the 24V power supply for driving the Reader on the
Main Controller PCB side using a tester. If the measurement
value is 24 V, replace the Main Controller PCB.
7. Check the harness between the Main Controller PCB and the
Low-voltage Power Supply PCB.
8. Perform step 6 again. If the measurement value is 24 V,
replace the Low-voltage Power Supply PCB.
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Description
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