SONY KV-28LS60 - SONY KV-32LS60 - How to Enter Service Mode - SELF DIAGNOSIS - How to Disassemble
The identification of errors within the AE-6B 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 flashing 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) See table 1, non fatal errors are reported using
this method.
TABLE-1
ERROR MESSAGE
|
LED CODE
|
NO ERROR
|
00
|
Reserved
|
01
|
Over current protection [OCP]
|
02
|
Over voltage protection [OVP]
|
03
|
No vertical sync
|
04
|
IKR error
|
05
|
IIC bus block and/or data lines low
at power on
|
06
|
NVM no IIC bus acknowledge at power
on
|
07
|
Horizontal protection
|
08
|
Tuner no acknowledge at power on
|
09
|
Sound processor error
|
10
|
Reserved
|
11
|
Scan rate error
|
12
|
DAC error
|
13
|
Back end error
|
14
|
Dynamic convergence error
|
15
|
PIP error
|
16
|
- Turn on the main power switch of the TV set.
- Program Remote Commander for Operation in Service Mode.
- Press ‘VIDEO’ ‘VIDEO’ > ‘MENU’ on the Remote Commander.
- Using the Remote Commander, Scroll to the ‘Error Menu’item using the down arrow key, then press the right arrow key.
- The following table will be displayed indicating the error count.
To clear the error count data press ‘80’ on the
Remote commander.
DISASSEMBLY
Remove the rear cover fixing screws indicated. Take care when
removing the rear cover not to damage the speaker cables [Disconnect the
speaker connector] as speakers are fitted inside the rear cover.
Before completely removing the rear cover
disconnect the speaker connector which is located on the inside.
To remove lift the main bracket rear slightly and slide the
chassis away from the beznet. Ensure that the interconnecting leads are
released from their purse locks to prevent damage being caused.
When refitting the chassis ensure that the main bracket is located
in the beznet guide slots before sliding the chassis forwards. Refit the
interconnecting leads in their respective purse locks.
Position the chassis as indicated to access the solder side.
To remove the G Board release the clips circled
and ease the board gently away from the support bracket. Removal of the D Board
follows the same procedure.
To remove the M Board gently release the two clips with a screwdriver
and remove the board from its socket vertically.
If the M Board needs to be removed for testing when
the chassis is placed in its service position, it would be necessary to use an
extender board and extension cable as indicated above. The Extender board and extension cable are
available.
Ensure that wires do not touch heat sinks and high
temperature hotspots. All wires must be kept at a minimum distance of 20 mm away
from the EHT lead.
TO ENTER SERVICE MODE
- To enter into the ‘Service Mode’ press ‘VIDEO’ button twice and ‘MENU’ on the Service Commander.
- Press the VCR/TV/DVD button until the TV LED lights.
- Press and hold the yellow button for approx. 5 seconds until the TV LED flashes quickly.
- Press 99999. All three LED’s should light. The remote commander is now set to Service Mode.
- To return the remote commander to normal operation mode repeat steps 1. and 2. then press 00000. All three LED’s should light.
- The remote commander is now set to normal mode.
- Program the remote commander for operation in Service Mode as described above.
- Turn on the TV main power switch.
- Press the video standby button on the remote commander twice. ‘TT ’ will appear in the upper right corner of the screen. Other status information will also be displayed.
- Press ‘MENU’ on the remote commander to obtain the above menu on the screen.
- Move to the corresponding adjustment item using the up or down arrow buttons on the Remote Commander.
- Press the right arrow button to enter into the required menu item.
- Press the ‘Menu’ button on the Remote Commander to quit the Service Mode when all adjustments have been completed.
