2 Troubleshooting 2.3 Power Supply Troubleshooting
2-12 [CONFIDENTIAL] PORTEGE M400 Maintenance Manual (960-541)
PPV output (P65_CH0)
Error code Meaning
90h PPV voltage is over 1.80V.
91h PPV voltage is 0.32V or less when the computer is powered on.
92h PPV voltage is 0.32V or less at booting up.
PTV output (P66_CH0)
Error code Meaning
A0h PTV voltage is over 1.32V.
A1h PTV voltage is 0.85V or less when the computer is powered on.
A2h PTV voltage is 0.85V or less at booting up.
1R5-E1V output (P63_CH1)
Error code Meaning
B0h 1R5-E1V voltage is over 1.80V.
B1h 1R5-E1V voltage is 1.275V or less when the computer is powered on.
B2h 1R5-E1V voltage is 1.275V or less at booting up.
B4h 1R5-E1V voltage is 1.275V or more when EV power is maintained and
“OUTV7 power = EV power” is specified.
1R8-B1V output (P64_CH1)
Error code Meaning
C0h 1R8-B1V voltage is over 2.16V.
C1h 1R8-B1V voltage is 1.53V or less when the computer is powered on.
C2h 1R8-B1V voltage is 1.53V or less at booting up.
C4h 1R8-B1V voltage is 1.53V or more when BV power is maintained and
“OUTV8 power = BV power” is specified.
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