IBM Aptiva Series Hardware Maintenance page 91

005 - DOES THE SYSTEM UNIT WORK CORRECTLY BY ITSELF?
(YES, READ AHEAD. NO, GO TO STEP 019.)
− Power-off the system unit.
− Reconnect (reseat) the riser card.
− Do not install any adapter cards on the riser card.
− Power-on the system unit.
− Check the voltages at pins B3, B5, B7, and B9 on the ISA slots and
A1, B2, B5 on the PCI slots of the riser card.
ISA Slots
= +5 V dc
B3
= -5 V dc
B5
B7 = -12 V dc
= +12 V dc
B9
Figure 2- 5 Riser Card Voltage Testing Points
006 - ARE THE VOLTAGES CORRECT? (YES, GO TO STEP 007.
NO, GO TO STEP 019)
2-38
PCI Slots
A1 = -12 Vdc
B2 = +12 Vdc
B5 = +5 Vdc