KV-27S42 - Sony TV Service Manual (repair manual). Page 5

LED ON 0.3 sec.

LED OFF 0.3 sec.

LED OFF

3 sec.

2 times

4 times

5 times

+B overcurrent

2 times

Vertical deflection stopped

4 times

White balance failure

5  times

*One flash count is not used for self-diagnostic.

Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from
flashing.

For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is
possible to bring up past occurrences of failure on the screen for confirmation.

In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below:

Display

Channel 5

Sound volume

Note that this differs from entering the service mode (sound volume 

).

Power ON

+

SELF DIAGNOSTIC

2:
3:
4:
5:
101:

N/A

N/A

0
0
0
1
0

Numeral “0” means that no fault was detected.

Numeral “1” means a fault was detected one time only.

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during
repairs. When you have completed the repairs, clear the result display to “0”.

Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion
of the repairs.

To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed,
as shown below:

ENTER

Channel 8

To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.

STANDBY/TIMER LED