9. The next part of this test is forms path sensor tuning. The rear forms path sensor is mounted on one
of the platen pinch roller assemblies. Because this sensor has two positions (closed and open), the
printer tunes this sensor in each position. During this part of the test the pinch rollers are closed and
opened.
10. The following message will display:
T&D11 Pinch Roller/Sensor Tune/Ribbon SENSORS TUNED PRESS A KEY
Important
The forms path sensors were tuned. The tuning must be done with all paper removed. If paper is
installed, remove the paper and repeat T&D11
Return to the step that sent you here, or for T&D11, continue with the next step.
11. Press any key and get this to display:
T&D11 Pinch Roller/Sensor Tune/Ribbon TEST RUNNING TO STOP
12. The ribbon feed and the ribbon lift motors run continuously during this test. This feeds the ribbon, and
raises and lowers the ribbon lift. Press the Form Feed key to stop the test. If either motor fails, go to
“MAP 0160: Ribbon Feed and Ribbon Lift” on page 89.
13. If an error message is displayed, go to “T&D Error Messages and Actions – Models 001, 002, and
003” on page 231.
14. The test completed successfully if the display advances to the next test number.
T&D12 - AFTA Calibrate Test
You must complete this test to:
v
Calibrate the microcode for the printhead
- and -
v
Adjust the gap between the printhead needles and the platen
Chapter 2. Diagnostics
210
Summary of Contents for 4247
Page 1: ...4247 Printers Maintenance Information Document Number SA24 4400 05 Part Number 27P8450 IBM ...
Page 241: ...e90apc15 Figure 24 Main Input Power Supply Ground Chapter 3 Circuit Diagrams 241 ...
Page 257: ...Figure 32 Stacker Motor Wiring Chapter 3 Circuit Diagrams 257 ...
Page 261: ...Stacker Cable Wiring Figure 36 Tractor Assembly Cable Wiring Chapter 3 Circuit Diagrams 261 ...