Table of Contents
Advertisement
SUB
BRIGHTNESS
ADJUSTMENT
al
aes
Input a Phillips pattern.
Enter into service mode and press 23.
Adjust data so that 0-IRE of grey scale and
CUT-OFF 20-IRE are only slightly visible on screen.
SUB
CONTRAST
ADJUSTMENT
NO —
ae
Input a video that contains a small 100% area on
a Black Background.
Enter into service mode and press 01 to have
PIC max followed by 21.
Connect oscilloscope to pin @) of CN703 (R OUT)
and adjust HWB Red data of TDA8366 | to obtain
2.3Vp-p.
No—_—
OF
SUB
COLOR
ADJUSTMENT
Input a PAL color bar signal.
Connect an oscilloscope to pin GB) of CN703
(B OUT) on the C board.
Enter into service mode and press 22.
Adjust data so that the right sides of the waveform
are set to the same level.
SAME LEVEL
|
|
|
B-OUT WAVEFORM
|
— 25 —
KV-M254
1.F. COIL ADJUSTMENT (T1101) - B/G, D/K, | AND L
STANDARD FOR CONTINENTAL MODELS.
RES
Sa
Apply a 38.9MHz signal at 100dBuV to the input of
SWFIO1.
Receive a channel so that the I.C. is selected for negative
modulation.
Measure the voltage at the AFT test point and adjust
(T101) to obtain 2.4V +/- 0.2V.
.F. COIL ADJUSTMENT (T101) - |, STANDARD
FOR U.K. MODELS.
N =
y
Apply a 39.5MHz signal at 100dBuV to the input of
SWFIO1.
Receive a channel so that the I.C. is selected for negative
modulation.
Measure the voltage at the AFT test point and adjust
(T101) to obtain 2.4V +/- 0.2V.
L, BAND 1 ADJUSTMENT (RV102) - L, STANDARD
FOR FRENCH MODELS.
—
wo
Apply a 33.95MHz signal at 100dBuV to the input of
SWFI1O1.
Receive a channel so that the I.C. is selected for positive
modulation and system L band 1.
Measure the voltage at the AFT test point and adjust
(RV 102) to obtain 2.4V +/- 0.2V.
Note : Only adjust RV102 after T101 has been correctly
adjusted.
Sad
eo a
=
AGC
ADJUSTMENT
Receive an off- air signal.
Enter the service mode, ("Test" "Test") and 35.
Adjust the data so that there is no snow or
cross - modulation visible on the screen.
Change the receiving off-air channel, and confirm
the above status.
RV102_
T7101
je!
[6
Ke
TUNER
[|
AFT T.P
CNO01
- A Board component side -
Advertisement
Table of Contents
