IBM 5150 - Page 169

Error
Description
Diagnostic Action
Control
5. Is Ready light on?
Panel
YES:
Go to step 6.
NO:
Measure for approximately +1 0 to
+ 12 V dc at pin 4 on Control Panel.
Use ground pin on the Driver
Circuit card (see Section 5,
"Locations").
12 Vdc?
YES: Replace Control cards (see
Section 3, "Remova1/
Replacement").
NO:
Replace Control Panel (see
Section 3, "Remova1/
Replacement").
1400-28