Lexmark Optra 4049 Series, Service Manual

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Diagnostic Information 2-34
4049-XXX
Stalled (diamonds on display)
Check the continuity of the cable from J1 on the engine board to the
operator panel. Next reseat the ROM and memory SIMMs and POR.
This condition can also occur if the RIP and engine board are not
seated or their connectors are damaged.
If the problem is still present, replace one at a time the:
1. ROM SIMM
2. Engine board
3. RIP Board
Vertical Void or Streak
Do a developed image test to determine if the defect is occurring
before or after the transfer process.
If you see the defect on the photoconductor, check the operation of
the printhead shutter and clean the printhead window with a lint-free
cloth folded over a cotton swab; do not use a bare swab and do not
use any cleaning fluids or water on the printhead window. Inspect
the HVPS contacts.
If the image on the photoconductor is good, inspect the fuser rolls
and transfer roll. Make sure the left transfer roll bearing is contacting
the contact from the HVPS. Make sure the HVPS contacts are clean
and spring back when pressed.