Lexmark Optra E Service Manual - Page 45

Diagnostic Information 2-23, Post Incomplete - ERROR LED remains on solid

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4026-0XX FRU Action 5 ROM SIMM Reinstall the ROM SIMM. Check for +5 V dc at and Optional CN7-4. If incorrect, replace the ROM SIMM. Memory SIMM Reinstall the optional memory SIMM if one was installed. Check for +5 V dc at CN7-4. If incor- rect, replace the optional memory SIMM. 6 HVPS Reconnect CN4 and check for +5 V dc at CN74. If incorrect, replace the HVPS. 7 Printhead Reconnect CN5 and CN10. Check for +5 V dc at Assembly CN7-4. If incorrect, replace the printhead assembly. 8 Thermistor Reconnect CN2 and check for +5 V dc at CN7- 4. If incorrect, replace the thermistor/cable assembly. Post Incomplete - ERROR LED remains on solid Note: Be sure the top cover is closed when doing the following checks. FRU Action 1 LVPS Disconnect the LVPS cable from the engine board. The voltage measures approximately +24 V dc between pin 1 (+24 V dc) and pin 2 (+24 V dc ground). If incorrect, replace the LVPS. 2 Engine Board Reconnect the LVPS cable and measure the voltage on CN7-1. The reading should measure approximately +24 V dc. If incorrect, disconnect CN3, CN4, CN6, CN9, CN10 and CN11 from the engine board. The voltage on CN7-1 measures +24 V dc. If incorrect, replace the engine board. If correct, reconnect one cable at a time check- ing the voltage at CN7-1 until the FRU causing the problem is found. Replace the failing FRU. If the CN3 or CN9 are causing the problem, it is necessary to disconnect each solenoid and check the voltage at CN7-1. Replace the failing FRU. Diagnostic Information 2-23

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4026-0XX
Diagnostic Information 2-23
Post Incomplete - ERROR LED remains on solid
Note:
Be sure the top cover is closed when doing the following
checks.
5
ROM SIMM
and Optional
Memory
SIMM
Reinstall the ROM SIMM. Check for +5 V dc at
CN7-4. If incorrect, replace the ROM SIMM.
Reinstall the optional memory SIMM if one was
installed. Check for +5 V dc at CN7-4. If incor-
rect, replace the optional memory SIMM.
6
HVPS
Reconnect CN4 and check for +5 V dc at CN7-
4. If incorrect, replace the HVPS.
7
Printhead
Assembly
Reconnect CN5 and CN10. Check for +5 V dc at
CN7-4. If incorrect, replace the printhead
assembly.
8
Thermistor
Reconnect CN2 and check for +5 V dc at CN7-
4. If incorrect, replace the thermistor/cable
assembly.
FRU
Action
1
LVPS
Disconnect the LVPS cable from the engine
board. The voltage measures approximately +24
V dc between pin 1 (+24 V dc) and pin 2 (+24 V
dc ground). If incorrect, replace the LVPS.
2
Engine Board
Reconnect the LVPS cable and measure the
voltage on CN7-1. The reading should measure
approximately +24 V dc. If incorrect, disconnect
CN3, CN4, CN6, CN9, CN10 and CN11 from the
engine board. The voltage on CN7-1 measures
+24 V dc. If incorrect, replace the engine board.
If correct, reconnect one cable at a time check-
ing the voltage at CN7-1 until the FRU causing
the problem is found. Replace the failing FRU.
If the CN3 or CN9 are causing the problem, it is
necessary to disconnect each solenoid and
check the voltage at CN7-1. Replace the failing
FRU.
FRU
Action