2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
2-8 [CONFIDENTIAL] QOSMIO F20 Maintenance Manual (960-526)
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 Off for half second
The error code begins with the least significant digit.
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.
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