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2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures
A-C3V output
Error code Meaning
60h A-C3V voltage is over 3.96V when the computer is powered on/off.
61h A-C3V voltage is 2.81V or less when the computer is powered on.
62h A-C3V voltage is 2.81V or less when the computer is booting up.
63h A-C3V voltage is 2.81V or less while the computer is suspended.
64h A-C3V voltage is abnormal while the computer is shutdown. (CV support)
65h A-C3V voltage is 2.81V or less when the computer is booting up. (CV support)
PPV output
Error code Meaning
70h PPV voltage is over 1.80V when the computer is powered on/off.
71h PPV voltage is 0.56V or less when the computer is powered on.
72h PPV voltage is 0.56V or less when the computer is booting up.
73h PPV voltage is 0.56V or more when the computer is powered off.
PTV
Error code Meaning
80h PTV voltage is over 1.26V when the computer is powered on/off.
81h PTV voltage is 0.68V or less when the computer is powered on.
82h PTV voltage is 0.68V or less when the computer is booting up.
83h PTV voltage is 0.68V or more when the computer is powered off.
84h PTV voltage is 0.68V or less while the computer is suspended.
E5V output
Error code Meaning
90h E5V voltage is over 6.00V when the computer is powered on/off.
91h E5V voltage is 4.50V or less when the computer is powered on.
92h E5V voltage is 4.50V or less when the computer is booting up.
93h E5V voltage is 4.50V or more when the computer is powered off.
94h E5V voltage is 4.50V or less while the computer is suspended.
2-12 [CONFIDENTIAL] QOSMIO G20 Maintenance Manual (960-511)