7. Verify the gap between the carriage casting and the platen, as described in Standard AFTA Service Check and
Adjustment.
055 AFTA Errors:
If your printer is getting a 055 AFTA ERROR message that is caused by a bad #5B printhead
needle, the printer will display these messages:
v During normal operation: With the AFTA=0 mode, you perform a paper load operation, but get a 055 AFTA
ERROR message.
or -
v During T&D12: With the AFTA=0 or the FIXED=1 mode, you begin the AFTA Calibration portion of T&D12, but
get the message TD12 FRU 3 [14] PRESS A KEY.
To determine if the cause of the 055 AFTA ERROR message is a bad #5B printhead needle, follow these steps:
1. Power off (O) the printer, and remove all paper from the printer.
2. Power on (|) the printer and enter the operator menu to change to FIXED=1 mode.
3. Load 1-part paper and print some characters.
4. Examine the DP characters, such as an uppercase H, looking for missing dots. Count down 5 dots from the
top of the character.
5. Inspect the printhead cable for damage and a poor connection at the printhead. Replace the cable, if
indicated.
6. If the cable is OK, replace the printhead.
Running T&D12:
v Press the Micro ↑ key to run the test.
v Press the Micro ↓ key to skip the test.
v Press the Load/Form key to end the test.
If T&D11 (Sensor Tuning) was not completed before beginning T&D12, the following message displays:
PINCH XXXXX
Chapter 2. Diagnostics
212
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