2.3 Power Supply Troubleshooting

2 Troubleshooting Procedures

‰PPV output (P65)

Error code

Meaning

 

 

90h

PPV voltage is over 1.80V when the computer is powered on/off.

 

 

91h

PPV voltage is 0.56V or less when the computer is powered on.

 

 

92h

PPV voltage is 0.56V or less when the computer is booting up.

 

 

93h

PPV voltage is over 0.56V when the computer is powered off. (PV

 

power is off)

‰PTV output (P66)

Error code

Meaning

 

 

A0h

PTV voltage is over 1.26V when the computer is powered on/off.

 

 

A1h

PTV voltage is 0.89V or less when the computer is powered on.

 

 

A2h

PTV voltage is 0.89V or less when the computer is booting up.

 

 

A3h

PTV voltage is over 0.89V or more when the computer is powered off.

 

(PV power is off)

‰1R5-E1V output (P63: MUX_CH1)

Error code

Meaning

 

 

B0h

1R5-E1V voltage is over 1.80V when the computer is powered on/off.

 

 

B1h

1R5-E1V voltage is 1.275V or less when the computer is powered on.

 

 

B2h

1R5-E1V voltage is 1.275V or less when the computer is booting up.

 

 

B3h

1R5-E1V voltage is over 1.275V when the computer is powered off.

 

(EV power is off)

 

 

B4h

1R5-E1V voltage is 1.275V or less when the computer is powered off.

 

(EV power is on)

‰PTV output (P73)

Error code

Meaning

 

 

C0h

PTV voltage is over 1.63V when the computer is powered on/off.

 

 

C1h

PTV voltage is 0.68V or less when the computer is powered on.

 

 

C2h

PTV voltage is 0.68V or less when the computer is booting up.

 

 

C3h

PTV voltage is over 0.68V when the computer is powered off.

 

(BV power is on)

 

 

C4h

PTV voltage is 0.68V or less when the computer is powered off.

 

(BV power is on)

Satellite A50S/TECRA A3X Maintenance Manual (960-534)

[CONFIDENTIAL]

2-11

Page 67
Image 67
Toshiba A3X manual ‰ PPV output P65