E020 - Canon 1000 Service Manual

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
11

E020

• Check the detail code of 'E020' using 'JAM/ERR' under 'DISPLAY' in service mode.
a. E020=XX30, XX31, XX35, XX36, XX3A, XX3B, XX40, XX41, XX42, XX43, XX45, XX46, XX47, XX48,
XX50, XX55, XXA0, XXA1, XXA5, XXA6, XXAA, XXB0, XXB1, XXB2, XXB5, XXB6, XXB7 XXBF
(high-order 2 digits representing the color as XX=00 indicating all colors; 01, Y; 02, M; 03, C;
and 04, Bk.)
Cause Step
Initial value
setting faults
Developing
assembly (un-
even toner
density)
Developer
Connector,
Wiring
7-98
COPYRIGHT © 2001 CANON INC.
Checks
1 Execute 'FUNC' > 'INSTALL' >
'INIT-Y/M/C SINIT-Y/M/C/K' in
service mode once again for the
color for which 'E020' is indicated. Is
the problem corrected?
2 Execute 'STIR' for the color for which
'E020' is indicated for 'INSTALL'
under 'FUNC' in service mode. Is the
problem corrected?
3 Replace the developer of the color
for which 'E020' is indicated, and
execute 'INIT' of 'INSTALL' under
'FUNC'. Is the problem corrected?
4 Are the connectors and wiring of the
following connectors normal?
DC Controller PCB
M, C: J1002A
Y, K: J1002B
Connectors
M: J111A, J111B
C: J112A, J112B
Y: J113A, J113B
K: J114A, J114B
Developing Assemblies
M: J107
C: J108
Y: J109
Drum
K: J110
Yes/No
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
YES End.
YES End.
YES End.
NO Re-connect them.