IBM V03 Maintenance Information page 109

or -
v During T&D08: With the AFTA=0 or the FIXED=1 mode, you begin the AFTA Calibration portion of T&D08, 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 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&D08:
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&D07 (Sensor Tuning) was not completed before beginning T&D08 (AFTA Calibrate Test) , the following
message displays:
1. Ensure the paper bail and a ribbon cartridge are installed.
2. Install 20 lb (80 g/m²) paper into the rear tractor.
3. Press the Load/Form key to select FF.
4. The printer will now load the paper and perform the AFTA operation.
The following 2 messages display sequentially:
+ AFTA X -
YES <- STORE -> NO
109
Chapter 2. Diagnostics