Lexmark X925 7541-03 series - SDRAM R;W Error; MDC Error; CPU Error

2-66 Service Manual
7541-03x
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941.01 SDRAM R/W error
941.02 MDC error
Remove power from the printer before continuing or use caution if the product must be energized
during this procedure. The heat sink transformer core presents risk of electric shock. Test before
touching.
941.03 CPU error
Step Action and questions Yes No
1 Check all the cables connected to the printhead
controller board. Are they properly connected?
Go to step 3 Go to step 2.
2
Connect the cables, Did this fix the problem? Problem resolved Go to step 3.
3
Replace the printhead controller board. Did this fix the
issue?
Problem resolved Contact your
second level
support.
Step Action and questions Yes No
1 Are the cables connecting CN24 on the engine board,
CN5 on the printhead controller, and CN03 in the
LVPS properly connected?
Go to step 3. Go to step 2.
2
Re connect the cables. Did this fix the problem Problem resolved Go to step 3.
3
Check the cables for continuity. Is there continuity? Go to step 5. Go to step 4.
4
Replace the cables. Did this fix the issue? Problem resolved Go to step 5.
5
Check pins 1,3, and 7 on CN03 on the LVPS for +5V,
and pins 5, and 9 for +24V. Are the voltages correct?
Go to step 7 Go to step 6.
6
Replace the LVPS. Did this fix the problem? Problem resolved Go to step 7
7
Replace the engine board. Does this fix the issue? Problem resolved Go to step 8.
8
Replace the printhead controller board. Did this fix the
issue?
Problem resolved Contact your
second level of
support.
Step Action and questions Yes No
1 POR the printer.
Does the problem go away?
Problem resolved Go to step 2.
2
Replace the printhead controller. Does this fix the
problem?
Problem resolved Go to step 3.
3
Replace the RIP board. Did this fix the issue? Problem resolved Contact your
second level
support.