B7 = −12 V dc
B9 = +12 V dc
B
A
91357
(Connector side)
(Pin side)
91357
A
B
Figure 2-7. Riser Cards - Machine Types 2134 and 2176
ARE THE VOLTAGES CORRECT?
Yes No
016
Replace the riser card. If the symptom remains, replace the system
board.
017
Check all jumper and switch settings.
If the symptom remains, replace the modem adapter card.
– or –
Replace the system board.
Check Procedures 2-65
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