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2.3 Power Supply Troubleshooting 2 Troubleshooting
Procedure 2 Error Code Check
If the power supply microprocessor detects a malfunction, the DC IN icon blinks orange. The
blink pattern indicates an error as shown below.
Start Off for 2 seconds
Error code (8 bit)
“1” On for one second
“0” On for half second
Interval between data bits On for half second
The error code begins with LSB (Least Significant bit)
Example: Error code 11h (Error codes are given in hexadecimal format.)
Check 1 Convert the DC IN icon blink pattern into the hexadecimal error code and
compare it to the tables below. Then go to Check 2.
Table 2-3 Error cord
Error code Power supply of error detected
1*h DC power supply (AC Adapter)
2*h Main
battery
3*h Second battery
4*h S3V output
5*h E5V output
6*h E3V output
7*h 1R5-E1V output
8*h 1R8-B1V output
9*h PPV output
A*h PTV output
B*h 1R5-E1V output
C*h 1R8-B1V output
D*h PPV output
E*h
PTV output (Intel 945GM model) or
PGV output (Intel 945PM model)
F*h -
Satellite R20/TECRA M7 Maintenance Manual (960-572) [CONFIDENTIAL] 2-9