Canon NP6621 Service Handbook page 75

18 The photosensitive drum fails to rotate.
Cause Step
1 Is 'E010' indicated?
Drum 2 Re-install the drum cartridge. Is the
cartridge problem corrected?
Belt 3 Is the drive belt correctly attached?
Main drive
assembly
19 Pick-up operation fails (from cassette).
Cause Step
Paper in 1 Is the paper retained by the claw of
cassette the cassette?
Cassette 2 Slide out and then in the cassette. Is
the problem corrected?
Pick-up 3 Does the pick-up roller rotate when the
clutch (CL2/ Copy Start key is pressed?
CL5)
Pick-up 4 Has the pick-up roller or the pick-up
roller, Pick- separation pad reached its service
up separa- life?
tion pad
DC control- 5 Replace the DC controller PCB. Is the
ler PCB problem corrected?
Checks
Checks
TROUBLESHOOTING MALFUNCTIONS
Yes/No Remedy
YES See "E010."
YES End.
NO Re-attach the belt.
YES Remove the main drive
assembly, and correct or
replace the associated parts
as necessary.
Yes/No Remedy
NO Advise the user on the
correct ways of setting
paper.
YES End.
• Advise the user on the
correct ways to set the
cassette.
NO Check the wiring from the
connector J312 on the DC
controller PCB to the pick-up
clutch; if normal, replace the
clutch.
YES Replace the pick-up roller/
pick-up separation pad.
YES End.
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