904-Black Developer Clutch Service Check - Lexmark C720 Service Manual

5024-001
904—Black Developer Clutch Service Check
FRU
1 Check Clutch
2 Black Developer Clutch
(DCLK)
3 IOD2 P.W.B. Board
4 Main Engine (MCTL
P.W.B.) Board
Developer Clutch (DCLK)
Action
Ensure the black developer clutch (DCLK)
connector ECN13 on IOD2 P.W.B. board
is properly connected.
Check the voltage between ECN13-3 and
ECN2-6.
If the voltage drops below +24V, replace
the black developer clutch (DCLK).
Check the voltage between ECN1-4 and
ECN2-8.
If the voltage does not jump to +24V,
replace the IOD2 P.W.B. board.
If the problem still exists, replace the main
engine (MCTL P.W.B.) board.
Diagnostic Information
2-41