Lexmark X792 - XX-Scanner Carriage Home Position Detection Service Check

2-152 Service Manual
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843.xx—Scanner carriage home position detection service check
2
Check the cable for damage.
Are any of the cables damaged?
Replace the cable. Go to step 3.
3
Replace the ADF controller card. See “ADF
controller card removal” on page 4-174.
Does the error clear?
Problem solved. Go to step 4.
4
Replace the scanner interface card. See
“Scanner interface card removal” on
page 4-233.
Does the error clear?
Problem solved. Replace the system board.
See “System board
removal” on page 4-149.
Step Questions / actions Yes No
1 Remove the scanner rear cover. See
“Scanner rear cover removal” on
page 4-215.
Is the CN3 cable unplugged?
Reconnect the cable. Go to step 2.
2
Remove the scanner platen glass cover. See
“Scanner platen glass cover removal” on
page 4-234.
Is the carriage belt broken?
Replace the carriage belt.
See “Flatbed scanner
CCD assembly removal”
on page 4-221.
Go to step 3.
Step Questions / actions Yes No
Belt is
under rod