2.3 Power Supply Troubleshooting 2 Troubleshooting
Satellite R20/TECRA M7 Maintenance Manual (960-572) [CONFIDENTIAL] 2-11
E5V output
Error code Meaning
50h E5V voltage is over 6.00V.
51h E5V voltage is under 4.50V when the computer is powered on.
52h E5V voltage is under 4.50V at booting up.
54h E5V voltage is under 4.50V when EV power is maintained and
“OUTV1 power = EV power” is specified.
E3V output
Error code Meaning
60h E3V voltage is over 3.96V.
61h E3V voltage is under 2.81V when the computer is powered on.
62h E3V voltage is under 2.81V at booting up.
64h E3V voltage is under 2.81V when EV power is maintained and
“OUTV2 power = EV power” is specified.
1R5-E1V output
Error code Meaning
70h 1R5-E1V voltage is over 1.80V.
71h 1R5-E1V voltage is under 1.275V when the computer is powered on.
72h 1R5-E1V voltage is under 1.275V at booting up.
1R8-B1V output
Error code Meaning
80h 1R8-B1V voltage is over 2.16V.
81h 1R8-B1V voltage is under 1.53V when the computer is powered on.
82h 1R8-B1V voltage is under 1.53V at booting up.
84h 1R8-B1V voltage is under 1.53V when BV power is maintained and
“OUTV4 power = BV power” is specified.