Symptom: Charger Leak (Error Code 9-17) *
This error occurs in either of the following conditions:
•
If MFDU CN21-8 stayed low for 3 s or more while the charge corona is on (sub-code 11)
•
If MFDU CN21-8 stayed low for 3 s or more while the charge corona is off (sub-code 12)
Check
Action if Yes
Action if No
1. Clean the charge corona wire and unit. Check the if the charge wire is cut off and
replace the CTM if it is broken.
2. If the sub-code is 11, do the following. If the sub-code is 12, go to step 5.
3. Are all of the charge bias
terminals connected ?
Go to step 4.
Secure the connections
and/or replace the CTM or
development unit.
4. Replace the power pack.
Does the problem still
remain?
Replace the MFDU or
MFCE.
5. If the sub-code is 12, do the following.
6. Does CN21-3 stay low
while in standby mode ?
Replace the MFDU or
MFCE.
Go to step 7.
7. Does CN21-8 stay low
while in standby mode ?
Replace the power pack.
Symptom: LD Failure (Error Code 9-20) *
This error occurs in the following condition:
•
The laser synchronization signal was not detected within 10 ms of the start of printing
(sub-code 21)
Check
Action if Yes
Action if No
Check that all the laser optic components are aligned correctly and clean them if
necessary.
Check that the optical fibre is properly set.
Check the connection between the MFDU (CN26) and the LDDR.
Check that the polygonal mirror motor and LDDR are correctly positioned.
If the problem still remains, replace the LDDR, MFDU or MFCE.
T
roubl
e-
shoot
ing
December 21st, 1995
TROUBLESHOOTING
SERVICE CALL CONDITIONS *
6-27
