KDL-40Z5800, KDL-40Z5810, KDL-46Z5800, KDL-52Z5800 - Sony TV Service Manual (repair manual). Page 10

The identification of errors within the EX2L chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the 
event of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with a continuous flash-
ing LED) and then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device 
number will be displayed through the LED (Series of flashes which must be counted).

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B

2

DC_DET

Replace either/both

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Power board
(G6NS (40"), Power Unit (G7NS)
(46"/52")

z

 BA board

5

DC_ALERT

Replace BA board.

6

BACKLIGHT

Replace either/all

z

 D1N(40"/46"), D2N(40"/46"),

D3N(52"), D4N(52")

z

 BA board

z 

Panel

z 

Power Board

(G6NS (40"), Power Unit (G7NS)
(46"/52"))

7

INTERNAL TEMP

Replace

z 

BA board

A

8

UDIO

Replace either/all

z

Power board
(G6NS (40"), Power Unit (G7NS)
(46"/52")

z

BA board

z

Speaker

10

DIGITAL FE/DE

Replace

z 

BA board.

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b

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c

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p

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R

HFR

2

1

z 

Panel

z 

BA Board

13

BALANCER

Replace either/all

z 

BA board.

z 

Power board

G6NS (40"), Power Unit (G7NS)
(46"/52")

z 

D1N(40"/46"), D2N(40"/46"),

D3N(52"), D4N(52")

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4

1

z 

Panel.

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BA Board