Printronix SLPA7000 User Manual page 185

Message
Poor scanning
Check heat&head
Poor scanning
Check media
Poor scanning
Inspect head
POWER LOSS SAVED
NON-VOLATILE RAM
Table 8. Message List
Explanation
Data validation failure:
decodeability. The difference
between wide and narrow
elements is too close for the
validator to reliably discern.
This usually indicates an
improperly set heat/speed/
pressure combination or the
loss of a printhead element.
Data validation failure: percent
decode. The validator detected
gross inconsistencies within the
height of the bar code. These
types of failures are likely
attributed to large blemishes
within the bar code, caused by
ribbon wrinkle or debris on
media.
Data validation failure:
hardware defect. The validator
detected unexpected dark spots
in spaces or light spots in bars.
This usually indicates a poor
ribbon/media combination, a
dirty printhead, or a burned
pixel.
The printer has detected a low
voltage level for +24VDC and
has saved the printer
configuration values to NVRAM.
List Of Messages
Solution
1. Adjust Print Intensity and
Print Speed in the QUICK
SETUP menu or via host
software.
2. Adjust the printhead
pressure. See "Printhead
Pressure Adjustment" on
page 55.
1. Check for a wrinkled ribbon
or debris on media. Roll
wrinkled area onto take-up
spindle.
2. Adjust the printhead
pressure blocks. See
"Printhead Pressure Block
Adjustments" on page 56.
1. Check that paper and
ribbon are clean,
unwrinkled, and installed
correctly.
2. Clean the printhead.
3. If message reappears,
replace the printhead.
1. Using a voltmeter, test
between TP4 GND and TP2
+24VDC (+22 to +26VDC).
If the voltage is not in
tolerance, power off the
printer and check the power
supply cables to the
controller PCBA for shorts,
opens, and clean, tight
connections.
2. Cycle power. If the
messages reappears,
replace the power supply
assembly.
3. Cycle power. If the
message reappears,
replace the controller
PCBA. Write down the
message and return it with
the defective board.
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