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B–1Appendix
B Printer Diagnostics
MVP–Series printers sense printer faults and signal these faults with a lit
CHK indicator and codes in the panel display. Table B–1 lists the fault codes
and required actions. Some faults cannot be cleared or bypassed. In such
cases, contact a qualified service representative to perform the repairs. Refer
to the appropriate maintenance manual for supplemental tests.
Printer Fault Conditions
A steady or flashing CHK indicator signals a fault in the printer which must
be corrected or bypassed before the printer can be placed on–line.
When a fault condition occurs, check for one of three situations:
• Flashing CHK indicator, which means the fault is user correctable.
• Steady CHK indicator, which means the fault is not user–correctable.
Some non–correctable faults are soft faults ( that is, a memory
checksum or pattern check) that can be bypassed (see “Bypass Soft
Fault”).
• A three–digit code in the display panel, which identifies the fault code
(see Table B–1 ).
To Bypass Soft Fault
To bypass a soft fault:
1. Press and hold the CHK switch.
2. Press and quickly release the RDY switch.
3. Release the CHK switch.