Saturday, January 31, 2015

SONY KV-28LS60B - KV-28LS60E - KV-28LS60U- KV-32LS60B KV-32LS60E KV-32LS60K KV-32LS60U

SERVICE MODE AND POWER SUPPLY CIRCUIT


SERVICE MODE

Service adjustments to this model can be performed using the supplied remote Commander RM-932

1.Press the VCR/TV/DVD button until the TV LED lights.2. Press and hold the yellow button for approx. 5 seconds until the TV LED flashes quickly.
3. Press 99999. All three LED’s should light. The remote commander is now set to Service Mode.
4. 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.
Setting the TV into Service Mode
1.Program the remote commander for operation in Service Mode as described above.
2. Turn on the TV main power switch.
3. 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.
4. Press ‘MENU’ on the remote commander to obtain the  menu on the screen.
5. Move to the corresponding adjustment item using the up or down arrow buttons on the Remote Commander.
6. Press the right arrow button to enter into the required menu item.
7. Press the ‘Menu’ button on the Remote Commander to quit the Service Mode when all adjustments have been completed
NOTE: After carrying out the service adjustments, to prevent the customer accessing the ‘Service Menu’ switch the TV set OFF and then ON.
Sub Brightness Adjustment
1. Input a Monoscope pattern.
2. Program the Remote Commander for operation in Service Mode.
3. Press ‘VIDEO’ ‘VIDEO’ 13 on the Remote Commander.
4. Adjust the ‘Sub-Brightness’ data so that there is barely a difference between the 0 IRE and 10 IRE signal levels.

Sub Contrast Adjustment
1.Input a video signal that contains a small 100% white area on a black background.
2. Connect an digital voltmeter to Pin 10 of J7378 [C Board].
3. Program the Remote Commander for operation in Service Mode.
4. Adjust the Sub-Contrast [ Using ‘VIDEO’ ‘VIDEO’ ‘11’ ] to obtain a voltage of 105 +/- 5V.

Sub Colour Adjustment
1. Receive a PAL colour bar signal.
2. Connect an oscilloscope to Pin 6 of CN7001 [A Board].
3. Program the Remote Commander for operation in Service Mode.
4. Adjust the ‘Sub Colour’ [ Using ‘VIDEO’ ‘VIDEO’ ‘12’ ] so that the Cyan, Magenta and Blue colour bars.

SMPS POWER SUPPLY SCHEMATICS 
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