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
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 ...