Lexmark C734dn Service Manual page 155

Step Questions / actions
Remove the HVPS. See
4
power supply (HVPS) removal" on
4-108. Check for continuity between the
page
contacts (yellow1 and yellow2, cyan1 and
cyan2, magenta1 and magenta2, or black1
and black2) on the transfer contact assembly.
yellow2
cyan2
magenta2
black2
Is continuity present?
4 Replace the HVPS. See
power supply (HVPS) removal" on
page 4-108.
Does the error clear?
Go to step 4.
"High-voltage
Problem resolved.
"High-voltage
Yes
Replace the transfer
contact assembly.
yellow1
cyan1
magenta1
black1
Replace the system board.
See
"System board
removal" on page
Diagnostic information
5026
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