User's Manual

1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

10-51

CHAPTER 10 TROUBLESHOOTING

Checks

Take out the developing assembly,

and shake it. Is the problem

corrected?

Is the reading in service mode

(105; primary current) 10 µA or

less?

Cause

Toner level,

toner level

detection

mechanism

Composite

power supply

PCB

Drum cartridge

Step

Results

YES

Action

The level of toner may

be too low or the toner

level detection

mechanism may be

faulty; advise the user to

replace the toner

cartridge.

Replace the composite

power supply PCB.

Replace the toner

cartridge.

Transfer