IBM V03 Maintenance Information page 34

Table 3. MAP 0120: Attachment (continued)
Step Questions/Actions
There are two serial loop-back connectors. One for RS-232C
3.
(PN 08H7268) and one for RS-422A (PN 08H7259).
Do you have the serial loop-back connectors for this
printer?
Install the RS-232C loop-back connector.
4.
Run T&D05 in Single Test Mode to test the serial attachment
circuits (see Running the test and diagnostic (T&D)
programs).
Did T&D05 run without errors?
Yes
Go to step 4.
Go to step 5.
No
Verify the serial card jumper
locations (see Serial card
jumper locations). If they are
correct, Install a new serial
attachment card (see
Attachment cards: serial,
twinax, LAN, coax).
- or -
Install a new logic board (see
Logic board).
- or -
Install a new host cable.
Run T&D in Automatic Mode
to verify correct printer
operation (see Running the
test and diagnostic (T&D)
programs).
Record the display message
and go to T&D error
messages and actions, and
perform the suggested action.
Chapter 1. Diagnosing problems
34