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2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
PPV output
Error code Meaning
B0h PPV voltage is over 1.92V when the computer is powered on or off.
B1h PPV voltage is 1.04V or less when the computer is powered on.
B2h PPV voltage is 1.04V or less when the computer is booting up.
B3h PPV voltage is 1.04V or more when the computer is powered off.
EMV output
Error code Meaning
C0h EMV voltage is over 3.00V when the computer is powered on/off.
C1h EMV voltage is 1.53V or less when the computer is powered on.
C2h EMV voltage is 1.53V or less when the computer is booting up.
C3h EMV voltage is 1.53V or more when the computer is powered off.
C4h EMV voltage is 1.53V or less when the computer is suspended.
2R5-E2V output
Error code Meaning
D0h 2R5-E2V voltage is over 3.00V when the computer is powered on/off.
D1h 2R5-E2V voltage is 2.125V or less when the computer is powered on.
D2h 2R5-E2V voltage is 2.125V or less when the computer is booting up.
D3h 2R5-E2V voltage is 2.125V or more when the computer is powered off.
D4h 2R5-E2V voltage is 2.125V or less when the computer is suspended.
1R25-B1V output
Error code Meaning
E0h 1R25-B1V voltage is over 1.50V when the computer is powered on/off.
E1h 1R25-B1V voltage is 1.063V or less when the computer is powered on.
E2h 1R25-B1V voltage is 1.063V or less when the computer is booting up.
E3h 1R25-B1V voltage is 1.063V or more when the computer is powered off.
E4h 1R25-B1V voltage is 1.063V or less when the computer is suspended.
2-14 Satellite A20 Maintenance Manual (960-444)