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2 Troubleshooting Procedures
2-10 [CONFIDENTIAL] PORTEGE M700/M750 Maintenance Manual (960-661)
E5V output
Error code Meaning
50h E5V voltage is over 6.00V when the computer is powered on/off.
51h E5V voltage is under 4.50V when the computer is powered on.
52h E5V voltage is under 4.50V when the computer is booting up.
54h E5V voltage is under 4.50V when EV power is maintained and
OUTV1=EV is designated.
E3V output
Error code Meaning
60h E3V voltage is over 3.96V when the computer is powered on/off.
61h E3V voltage is under 2.81V when the computer is powered on.
62h E3V voltage is under 2.81V when the computer is booting up.
64h E3V voltage is under 2.81 V when EV power is maintained.
1R5-E1V output
Error code Meaning
70h 1R5-E1V voltage is over 1.80V when the computer is powered on/off.
71h 1R5-E1V voltage is under 1.275V when the computer is powered on.
72h 1R5-E1V voltage is under 1.275V when the computer is booting up.
74h 1R5-E1V voltage is under 4.50V when EV power is maintained and
OUTV1=EV is designated.
1R8-B1V output
Error code Meaning
80h 1R8-B1V voltage is over 2.16V when the computer is powered on/off.
81h 1R8-B1V voltage is under 1.53V when the computer is powered on.
82h 1R8-B1V voltage is under 1.53V when the computer is booting up.
84h 1R8-B1V voltage is under 1.53V when EV power is maintained and
OUTV =EV is designated.