Toshiba PORTEGE M400 Maintenance Manual page 59

2.3 Power Supply Troubleshooting
E5V output (P61)
Error code
50h
51h
52h
54h
E3V output (P62)
Error code
60h
61h
62h
64h
1R5-E1V output (P63_CH0)
Error code
70h
71h
72h
1R8-B1V output (P64_CH0)
Error code
80h
81h
82h
84h
PORTEGE M400 Maintenance Manual (960-541)
Meaning
E5V voltage is over 6.00V.
E5V voltage is 4.50V or less when the computer is powered on.
E5V voltage is 4.50V or less at booting up.
E5V voltage is 4.50V or less when EV power is maintained and
"OUTV1 power = EV power" is specified.
Meaning
E3V voltage is over 3.96V.
E3V voltage is 2.81V or less when the computer is powered on.
E3V voltage is 2.81V or less at booting up.
E3V voltage is 2.81V or less when EV power is maintained and
"OUTV2 power = EV power" is specified.
Meaning
1R5-E1V voltage is over 1.80V.
1R5-E1V voltage is 1.275V or less when the computer is powered on.
1R5-E1V voltage is 1.275V or less at booting up.
Meaning
1R8-B1V voltage is over 2.16V.
1R8-B1V voltage is 1.53V or less when the computer is powered on.
1R8-B1V voltage is 1.53V or less at booting up.
1R8-B1V voltage is 1.53V or less when BV power is maintained and
"OUTV4 power = BV power" is specified.
[CONFIDENTIAL]
2 Troubleshooting
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