2 Troubleshooting 2.3 Power Supply Troubleshooting

2-12 [CONFIDENTIAL] Satellite R20/TECRA M7 Maintenance Manual (960-572)

PPV output
Error code Meaning
90h PPV voltage is over 1.80V.
91h PPV voltage is under 0.32V when the computer is powered on.
92h PPV voltage is under 0.32V at booting up.
PTV output
Error code Meaning
A0h PTV voltage is over 1.32V.
A1h PTV voltage is under 0.85V when the computer is powered on.
A2h PTV voltage is under 0.85V at booting up.
1R5-E1V output
Error code Meaning
B0h 1R5-E1V voltage is over 1.80V.
B1h 1R5-E1V voltage is under 1.275V when the computer is powered on.
B2h 1R5-E1V voltage is under 1.275V at booting up.
B4h 1R5-E1V voltage is under 1.275V when EV power is maintained and
“OUTV7 power = EV power” is specified.
1R8-B1V output
Error code Meaning
C0h 1R8-B1V voltage is over 2.16V.
C1h 1R8-B1V voltage is under 1.53V when the computer is powered on.
C2h 1R8-B1V voltage is under 1.53V at booting up.
C4h 1R8-B1V voltage is under 1.53V when BV power is maintained and
“OUTV8 power = BV power” is specified.