C4001: Main Unit Communication Failure; C4002: Hsync Detection Failure - Konica Minolta bizhub 250 Service Manual

Field Service Ver. 1.0 Aug. 2005
19.3.20

C4001: Main Unit Communication Failure

MFBS Board (MFBS)
Step
Check the MFBS connector for proper connection,
1
and correct as necessary.
Check the PWB-A connector for proper connection,
2
and correct as necessary.
Check the flat cable between MFBS and PWB-A for
3
proper connection, and correct as necessary.
Turn OFF the Main Power Switch, wait for 10 sec. or
4
more, and turn ON the Main Power Switch.
5 Change MFBS
6 Change PWB-A
19.3.21

C4002: HSYNC Detection Failure

PH Unit (PH)
Step
Turn OFF the Main Power Switch, wait for 10 sec. or
1
more, and turn ON the Main Power Switch.
Check the PH and the PWB-A connectors for proper
2
connection, and correct as necessary.
3 Change PH
4 Change PWB-A
EDNord - Istedgade 37A - 9000 Aalborg - telefon 96333500
Relevant Electrical Parts
Mechanical Control Board (PWB-A)
Action
Relevant Electrical Parts
Mechanical Control Board (PWB-A)
Action
19. Malfunction code
WIRING DIAGRAM
Location
Control Signal (Electrical
Component)
-
-
-
-
-
-
WIRING DIAGRAM
Location
Control Signal (Electrical
Component)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
245