18. Malfunction code
18.3.20
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
18.3.21
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
250
Relevant Electrical Parts
Mechanical Control Board (PWB-A)
Action
Relevant Electrical Parts
Mechanical Control Board (PWB-A)
Action
Field Service Ver. 2.5 Jul. 2006
WIRING DIAGRAM
Location
Control Signal
(Electrical
Component)
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WIRING DIAGRAM
Location
Control Signal
(Electrical
Component)
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