IBM 4247-V03, Maintenance Information

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Table 14. 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 connected 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 (see Running the
test and diagnostic (T&D)
programs).
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 (see
Running the test and
diagnostic (T&D) programs).
6.
Are the forms sticking together or sticking to the
covers? Static electricity is present in
the forms. Contact Level 2
Support for guidance. Go to
step 7. Go to step 7.
Chapter 1. Diagnosing problems
65