KV-28DS20U - Sony TV Service Manual (repair manual). Page 9

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Error Display Mode is entered by the following sequence of commands :

Standby -> Information -> Digit 5 -> Volume Down -> TV

This mode will display a special menu, which will list all possible errors and the number of occurrances of each error (0 - 255, as stored in the 
NVM). There will also be a display of the current error (00 if no error). This display mode will appear as follows :

Current Error Code = 00

Error Code

Occurrences

Error Code

Occurrences

2

2

19

0

3

--

20

0

4

--

21

0

5

0

22

0

6

0

23

0

7

0

24

0

8

0

25

4

9

0

26

5

10

0

27

89

11

0

28

3

12

0

29

0

13

0

30

0

14

0

31

0

15

3

32

0

16

0

33

3

17

0

34

38

18

6

Whilst in this mode, the number of occurences of each error can be reset to 0 by following sequence of Sircs commands: Digit 8 -> Digit 0.
‘TT08’ will also reset this NVM data.

This mode can only be exited by switching off the TV.

The Current Error Code can also be read by using a TV Error Reader (IIC slave address 42H). This device simply receives 1 data byte, which is the 
error number in binary coded decimal form.