IBM 4247 Maintenance Information page 46

Table 6. MAP 0121: Attachment, Models 001, 002, or 003 (continued)
Step Questions/Actions
Is the failure with the parallel attachment?
7.
Do you have the parallel loop-back connector (PN
8.
08H7269) for this printer?
Install the loop-back connector.
9.
Run T&D06 in Single Test Mode to test the parallel
attachment circuits. See "How To Run the Test and
Diagnostic (T&D) Programs" on page 201.
Did T&D06 run without errors?
Run T&D30–38 in Single Test Mode to test the coax or
10.
twinax attachment circuits. See "How To Run the Test and
Diagnostic (T&D) Programs" on page 201. The twinax
attachment must have a self-terminating twinax cable
installed (P/N 38F8254).
Did T&D30-38 run without errors?
Yes
Go to step 6 on page 45. Go to step 10.
Go to step 7.
Install a new host parallel
cable. Run T&D in
Automatic Mode to verify
correct printer operation.
See "How To Run the
Test and Diagnostic
(T&D) Programs" on
page 201.
Go to step 18 on
page 49.
No
Install a new logic board. See "Logic
Board - Models 001 and 002" on
page 378. Or "Logic Board - Model
003" on page 366.
- or -
Install a new host cable.
Run T&D in automatic mode to
verify correct printer operation. See
"How To Run the Test and
Diagnostic (T&D) Programs" on
page 201.
Record the message and go to
"T&D Error Messages and Actions"
on page 190 and perform the
suggested action.
See "T&D Error Messages and
Actions – Models 001, 002, and
003" on page 231 to find the
message. Perform the action
indicated.
Chapter 1. Diagnosing Problems
46