Philips 20PT643F Service Manual page 49

Make sure the menu item CLEAR is highlighted. Use the MENU
§
UP/DOWN buttons, if necessary.
Press the MENU RIGHT button to clear the error buffer. The text on
§
the right side of the 'CLEAR' line will change from 'CLEAR?' to
'CLEARED'
If the contents of the error buffer have not changed for 50 hours, the error
o
buffer resets automatically.
Note: If you exit SDAM by disconnecting the AC power from the television set,
the error buffer is not reset.
Error Codes
In case of non-intermittent faults, write down the errors present in the error buffer
and clear the error buffer before you begin the repair. This ensures 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 and not the actual cause of the
problem (for example, a fault in the protection detection circuitry can also lead to
a protection).