Canon BJC-820, Руководство по обслуживанию

Страница: 61 / 105

<Cause>
Cleaning or capping is not performed correctly, or
purge sensor cannot detect flag position.
<Suspected parts>
Purge unit, logic board, AC adapter, DC
cable.
<Measure>
4-7
BJC-8200 Part 4: TROUBLESHOOTING
TR
OUBLE
SHOO
TING
Check purge sensor
OK?
Check purge unit
operation
Check purge motor
OK?
OK?
Replace purge unit
No
Yes
Yes
No
Yes
No
Remove the purge unit from main unit.
Rotate the drive gear by hand in the
direction as shown in the figure to the
right to check that it rotates smoothly.
Replace logic board
OK?
No
Yes
1. Replace AC adapter
Purge Unit
END
Replace purge unit
Replace purge unit
Drive Gear
2. Replace DC cable
• Remove Purge unit from main unit and turn it on.
Check the measuring points while opening/closing
the sensor by rotating the drive gear by hand.
Measurement point Pin No. Normal value
Logic board
JPG1
1-3
2-4
Approx. 10
W
Measurement point Sensor Normal value
Logic board JPGS1
Pin No. 1
Open
Close
Low level
High level
7. Purge Error