Read Sony KV-21M5D Service Manual online
19
Same Level
B-Out Waveform
JW130
11
TUNER
17
L103
IC101
RV101
A
A Board component side
25" 2.21V +/- 0.01V
29" 2.52V +/- 0.01V
29" 2.52V +/- 0.01V
R - out Waveform
SUB BRIGHTNESS ADJUSTMENT
1.
Input a Phillips colour pattern.
2.
Press ‘TEST’ ‘TEST’ 13 on the Remote Commander.
3.
Adjust the ‘Sub-Brightness’ data so that there is barely a
difference between the 0 IRE and 10 IRE signal levels.
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
black background
2.
Set the picture control to maximum. [‘TT01’]
3.
Connect an oscilloscope to Pin 1 of CN504 [A Board].
4.
Enter into the ‘Picture’ service menu.
5.
Adjust the ‘R - Drive’ data to obtain the following waveform.
SUB COLOUR ADJUSTMENT
1.
Receive a PAL colour bar signal.
2.
Connect an oscilloscope to Pin 3 of CN504 [A Board].
3.
Enter into the ‘Picture’ service menu.
4.
Adjust the ‘Sub Colour’ data so that the Cyan, Magenta and
Blue colour bars are of equal levels as indicated below.
Blue colour bars are of equal levels as indicated below.
Note: Ensure that no signal is applied to the Antenna socket while
carrying out the following IF adjustments.
SYSTEM B/G, D/K, I & L I.F ADJUSTMENT
1.
Input a 38.9Mhz carrier signal at 100dBuV to Pin 11 [IF
output] of the tuner [TU101].
output] of the tuner [TU101].
2.
Measure the voltage at Pin 17 of [IC101].
3.
Adjust L103 [A Board] to obtain a voltage of 2.5V +/- 0.3V.
SYSTEM L BAND 1 I.F ADJUSTMENT
1.
Input a 34.0MHz carrier signal at 100dBuV to Pin 11 [IF
output] of the tuner [TU101].
output] of the tuner [TU101].
2.
Select ‘system L’ + C00 [channel 00].
3.
Measure the voltage at Pin 17 [IC101].
4.
Adjust RV101 [A Board] to obtain a voltage of 2.5V +/- 0.3V.
TUNER AGC ADJUSTMENT
1.
Receive a signal of 65dBuV / 75 ohm terminated, via the tuner
antenna socket.
antenna socket.
2.
Connect a voltmeter to JW130 [A Board].
3.
Enter into the ‘Test Menu’.
4.
Select the ‘AGC Adjust’ menu item.
5.
Adjust the data using the Yellow and Green buttons on the
Remote Commander to obtain a voltage of 3.0V +/- 0.2V.
Remote Commander to obtain a voltage of 3.0V +/- 0.2V.
TECHNICAL
GD - Secam
30
BD - Secam
31
RC - Secam
11
GC - Secam
19
BC - Secam
10
GD - Sports
30
BD - Sports
36
RC - Sports
14
GC - Sports
15
BC - Sports
17
Y - Delay (AV)
07
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