Specifications
196
Chapter 6 Diagnostics for E0xx, Bad NVM, or ILL NVM Errors
Fault Messages Requiring Field Service Attention
If a fault is not correctable by the operator, the fault message is followed by an 
asterisk (*). This usually indicates that an authorized service representative is 
needed. You should try two steps to clear the fault before calling your 
authorized service representative:
1. Set the printer power switch to O (off), wait 15 seconds, then turn the 
printer on again. Run your print job again. If the message does not 
appear, it was a false indication and no further attention is required.
2. If the message reappears, press the   (Pause) key. If the message goes 
away, it was a false indication and no further attention is required. If the 
message reappears, call your authorized service representative.
Table 15. Fault Messages
Displayed Message
Can User 
Correct?
Explanation Solution
24V POWER FAIL Yes +24 VDC: an internal 
power failure.
Power off the printer for 15 
seconds, then power back 
on. If the problem persists, 
contact your authorized 
customer service 
representative.
B11 ERROR: 
RAM TEST FAILED 
Cycle Power
Yes The printer found a 
defective memory 
location.
Power off the printer for 15 
seconds, then power back 
on. If the problem persists, 
contact your authorized 
customer service 
representative.
B12 ERROR: 
PROGRAM MISSING 
Repeat Download
Yes The printer cannot find 
the data controller 
program or the 
validation checksum is 
corrupt.
Cycle power. If problem 
persists, repeat download.
B13 ERROR: 
NOT COMPATIBLE
Yes An attempt was made 
to download firmware 
for a different printer 
type.
Cycle power. Repeat 
download for correct printer 
type.
B22 ERROR: 
DECOMPRESS SIZE 
Repeat Download
Yes Problem when 
downloading.
Cycle power. If problem 
persists repeat download.
B23 ERROR: 
DECOMPRESS CKSUM 
Repeat Download
Yes Problem when 
downloading.
Cycle power. If problem 
persists repeat download.










