Lexmark E310 Service Manual - Page 51

Diagnostic Information, Incorrect laser exposure or incorrect charging of

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4044-XXX Black page Note: Incorrect laser exposure or incorrect charging of the photoconductor causes an all black page. FRU Models E310 & E312 HVPS Contacts Model E310 Engine/LVPS Board HVPS Cable HVPS Model E312 Engine Board HVPS Cable HVPS Action Check the contacts for contamination and correct installation. Replace as necessary. Make sure the HVPS to engine/ LVPS cable is correctly installed. Disconnect the cable and measure the signals on CN2 of the engine/ LVPS board. Go to "Engine/LVPS Board (model E310)" on page 5-4 and check the voltage measurements. If the voltages are not correct, replace the engine/LVPS board. If the voltages are correct, check the HVPS to engine/LVPS cable for continuity. If the cable does not measure continuity, replace the cable. If the cable measures continuity, replace the HVPS. Make sure the HVPS to engine board cable is correctly installed. Disconnect the cable and measure the signals on CN11 of the engine board. Go to the "Engine Board (model E312)" on page -9. Check the voltage measurements. If the voltages are not correct, replace the engine board. If the voltages are correct, check the HVPS to engine board cable for continuity. If the cable does not measure continuity, replace the cable. If the cable measures continuity, replace the HVPS. Diagnostic Information 2-29

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Diagnostic Information
2-29
4044-XXX
Black page
Note:
Incorrect laser exposure or incorrect charging of the
photoconductor causes an all black page.
FRU
Action
Models E310 & E312
HVPS Contacts
Check the contacts for
contamination and correct
installation. Replace as necessary.
Model E310
Engine/LVPS Board
HVPS Cable
HVPS
Make sure the HVPS to engine/
LVPS cable is correctly installed.
Disconnect the cable and measure
the signals on CN2 of the engine/
LVPS board. Go to
“Engine/LVPS
Board (model E310)” on page 5-4
and check the voltage
measurements. If the voltages are
not correct, replace the engine/LVPS
board. If the voltages are correct,
check the HVPS to engine/LVPS
cable for continuity. If the cable does
not measure continuity, replace the
cable. If the cable measures
continuity, replace the HVPS.
Model E312
Engine Board
HVPS Cable
HVPS
Make sure the HVPS to engine
board cable is correctly installed.
Disconnect the cable and measure
the signals on CN11 of the engine
board.
Go to the “Engine Board
(model E312)” on page -9.
Check
the voltage measurements. If the
voltages are not correct, replace the
engine board. If the voltages are
correct, check the HVPS to engine
board cable for continuity. If the
cable does not measure continuity,
replace the cable. If the cable
measures continuity, replace the
HVPS.