IBM 4247 Maintenance Information page 170

Gear Display Action
Open PINCH OPEN Press the
Load/Form Feed
key
Closed PINCH OPEN Press the Micro
Open PINCH CLOSE Press the Micro
6. The next part of this procedure 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. The
next message displayed will be:
Important
The paper path sensors were tuned. The tuning must be done with all paper removed. If paper is
installed, remove the paper and repeat T&D11
7. If paper was not installed, press the Micro
Return to the step that sent you here, or for T&D11 continue with the next step.
8. The ribbon feed motor and the ribbon lift motor run continuously during this test. The message that appears
in the display is:
9. The ribbon feed and lift motors will run continuously until the Load/Form Feed key is pressed. If either motor
fails, go to "MAP 0160: Ribbon Feed and Ribbon Lift" on page 89.
10. If an error message is displayed, go to "T&D Error Messages and Actions" on page 190.
key
key
SENSORS TUNED
key.
TO STOP ->
170
Chapter 2. Diagnostics