Mirror Mismatch; Nvram Chip Failure; Nvram Crc Failure; Code Crc - Lexmark C920 Service Manual

950 - Mirror Mismatch

Step Questions/actions
1 Is 950.xx(xx= 30 or greater) displayed?
2 Replace the operator panel that was just installed with
the original operator panel. Restart the printer. Did this
fix the problem?
3 Replace the RIP card that was just installed with the
original RIP card. Restart the printer. Did this fix the
problem?

952 - NVRAM Chip Failure

952 Service
NVRAM Failure
Step Questions/actions
1 Make sure the 26-pin RIP printer controller cable is not
broken or damaged.
Is the cable broken or damaged?
2 Is EPROM U7 present on the printer controller board?

954 - NVRAM CRC Failure

Replace the RIP board.

955 - Code CRC

955 Service
Code CRC <loc>
Replace the RIP board.
Yes No
Go to step 2. Go to step 3
Problem solved. Contact your
Install a new technical support
operator panel. center.
Do not use the
operator panel
that generated
the 950 error.
Problem solved. Contact your
Install a new RIP technical support
card. Do not use center.
the RIP card that
generated the
950 error.
Yes No
Replace the Go to step 2.
cable.
Replace the Install EPROM
U7.
printer controller
board.
Diagnostic information
5056-XXX
2-19