Toshiba PORTEGE M400 - Manual (Page 57)

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.
‰ Error code
Error code Power supply of error detected
1*h AC Adapter
2*h 1
st
battery
3*h 2
nd
battery
4*h S3V output (P60)
5*h E5V output (P61)
6*h E3V output (P62)
7*h 1R5-E1V output (P63_CH0)
8*h 1R-8-B1V output (P64_CH0)
9*h PPV output (P65_CH0)
A*h PTV output (P66_CH0)
B*h 1R5-E1V output (P63_CH1)
C*h 1R8-B1V output (P64_CH1)
D*h PPV output (P65_CH1)
E*h PTV output (P66_CH1)
PORTEGE M400 Maintenance Manual (960-541) [CONFIDENTIAL] 2-9