IBM 4247 Maintenance Information page 72

Table 10. MAP 0140: Printhead Drive (continued)
Step Questions/Actions
Power off (O) the printer.
3.
Perform the printhead drive service
check. See "Printhead Drive Service
Check" on page 333.
Is the service check OK?
When the print wires are too close to the
4.
platen, they can cause printhead drive
problems.
Perform the AFTA service check. See
"Standard AFTA Service Check and
Adjustment" on page 285.
Is the AFTA service check OK?
Put the covers in the service position.
5.
See "Removing Covers" on page 275.
Disconnect the carriage motor connector
from the logic board.
See "Carriage Motor Wiring" on page 246
to measure the resistance of the motor
windings.
Is the measurement correct for each
winding?
Yes
Go to step 4.
Go to step 5.
Go to step 6 on page 73.
No
Repair as needed.
Run T&D in automatic 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.
Repair as needed.
Run T&D in automatic 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.
Install a new carriage motor. See
"Carriage Drive Motor Assembly" on
page 415.
Run T&D in automatic 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
72