Read Sony KV-2199M5J Service Manual online
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If no acknowledgement is returned from a device which is turned "ON", the device has a problem.
In this case, one of the LED's responding to the problem device will flicker a defined number of times.
Flickering is operated by lighting the LED's for 60ms each time.
The flickering frequency responding to each failed device is shown below.
SECTION 4
SELF DIAGNOSIS FUNCTION
Board name
Ref. No.
Device
Flickering Frequency
A Board
IC003
NONVOLATILE
MEMORY
(ST24C04FB6)
1
A Board
IC300
Y/C JUNGLE
(TDA8375A)
3
All the devices are checked one after another from the left of the table.
If an error is found, the responding LED will start flickering.
So, if more than 1 device have failed, only the one on the left side will flicker.
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