Philips 7603 series, Service Manual

Page: 27 / 257

Error Codes
Introduction
The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to
right. When an error occurs that is not yet in the error code buffer, it is written at the left side and all other errors shift one
position to the right.
The error code buffer is cleared in the following cases:
•
By activation of the CLEAR command in the SAM menu:
•
When you exit SDM / SAM with the STANDBY command on the remote control (when leaving SDM / SAM, by
disconnecting the set from AC power, the error buffer is not reset).
•
When you transmit the command DIAGNOSE-99-OK with ComPair.
•
If the content of the error buffer has not changed for 50 hours, it resets automatically.
Examples:
ERROR: 0 0 0 0 0: No errors detected.
ERROR: 6 0 0 0 0: Error code 6 is the most recent and only detected error.
ERROR: 9 6 0 0 0: Error code 6 was first detected and error code 9 is the most recent detected error.
You can also make the contents of the error buffer visible via the blinking LED procedure (see The Blinking LED
Procedure). This is especially useful when there is no picture.
Error Codes
In case of non-intermittent faults, clear the error buffer before you begin the repair. These to ensure that old error codes are
no longer present.
If possible, check the entire contents of the error buffer. In some situations an error code is only the result of another error
code and not the actual cause (e.g., a fault in the protection detection circuitry can also lead to a protection).