IBM 4247-003 Maintenance Manual - Page 105

Questions/Actions, Is the red LED lighted

Page 105 highlights

Table 15. MAP 0190: Forms Feed Problems (continued) Step Questions/Actions Yes No 5. Look closely at the tractor sensor in dim light. There is a Install a new logic board Remove and re-install the tractor small red LED visible in the sensor surface, over which assembly, making sure that the the forms pass. You may need to cup your hand around Run T&D in automatic test mode electrical connector tab is fully the sensor to be able to see the LED. This LED lights if to verify correct printer operation. seated in the connector. Check if the tractor is correctly plugged in and the electrical For Model A00, see "How To Run the red LED is now lighted. If the circuits are OK. the Test and Diagnostic (T&D) red LED is still not lighted, check Programs" on page 161. For that the small flat ribbon cable in Is the red LED lighted? Models 001, 002, or 003, see the tractor is fully connected to "How To Run the Test and the tractor motor. Check if the Diagnostic (T&D) Programs" on red LED is now lighted. If the red page 201. LED is still not lighted, install a new tractor assembly cable. Check if the red LED is now lighted. Replace the tractor assembly and check if the red LED is now lighted. If the red LED is still not lighted, install a new tractor assembly cable. Check if the red LED is now lighted. If the red LED is still not lighted, install a new logic board. Run T&D in automatic test mode to verify correct printer operation. For Model A00, see "How To Run the Test and Diagnostic (T&D) Programs" on page 161. For Models 001, 002, or 003, see "How To Run the Test and Diagnostic (T&D) Programs" on page 201. Chapter 1. Diagnosing Problems 105

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Table 15. MAP 0190: Forms Feed Problems (continued)
Step
Questions/Actions
Yes
No
5.
Look closely at the tractor sensor in dim light. There is a
small red LED visible in the sensor surface, over which
the forms pass. You may need to cup your hand around
the sensor to be able to see the LED. This LED lights if
the tractor is correctly plugged in and the electrical
circuits are OK.
Is the red LED lighted?
Install a new logic board
Run T&D in automatic test mode
to verify correct printer operation.
For Model A00, see “How To Run
the Test and Diagnostic (T&D)
Programs” on page 161. For
Models 001, 002, or 003, see
“How To Run the Test and
Diagnostic (T&D) Programs” on
page 201.
Remove and re-install the tractor
assembly, making sure that the
electrical connector tab is fully
seated in the connector. Check if
the red LED is now lighted. If the
red LED is still not lighted, check
that the small flat ribbon cable in
the tractor is fully connected to
the tractor motor. Check if the
red LED is now lighted. If the red
LED is still not lighted, install a
new tractor assembly cable.
Check if the red LED is now
lighted. Replace the tractor
assembly and check if the red
LED is now lighted. If the red
LED is still not lighted, install a
new tractor assembly cable.
Check if the red LED is now
lighted. If the red LED is still not
lighted, install a new logic board.
Run T&D in automatic test mode
to verify correct printer operation.
For Model A00, see “How To Run
the Test and Diagnostic (T&D)
Programs” on page 161. For
Models 001, 002, or 003, see
“How To Run the Test and
Diagnostic (T&D) Programs” on
page 201.
Chapter 1. Diagnosing Problems
105