Panasonic BT-M1950Y Service Manual page 38

BT-M1950Y
Item
Chroma and
phase
(Y/C input,
NTSC)
Contrast
(Y/C input,
NTSC)
Chroma
(Y/C input,
PAL)
Chroma
(Component
input, NTSC)
Test equipment
Oscilloscope
Signal generator
(Color bar)
Oscilloscope
Signal generator
(Color bar)
Oscilloscope
Signal generator
(Color bar)
Oscilloscope
Signal generator
(Color bar)
Test points
TP-B
[CRT socket
PWBJ
TP-G
[CRT socket
PWBJ
TP-B
[CRT socket
PWBJ
TP-B
[CRT socket
PWBJ
Adjustment
locations
SOB (CHROMA)
S09(PHASE)
[SERVICE MENU]
S10 (CONTRAST)
[SERVICE MENU]
S11 (CHROMA)
[SERVICE MENU]
Adjustment procedure
1. Supply an NTSC color bar input to Y/C In.
2. Set the menu Filter Select to Notch.
3. Connect oscilloscope to TP-B.
4. Alternately adjust
sos
and S09 to obtain a
straight line waveform.
5. Set Filter Select to Comb.
- - -
1. Supply an NTSC color bar input to Video
A.
2. Set the Color Off switch to off.
3. Connect oscilloscope to TP-G.
4.
Adjust the waveform level to 31 Vp-p with S10.
5. Set the Color Off switch to Color.
J
t
31 Vp_p
t
1. Supply a PAL color bar input to Video
A.
2. Connect oscilloscope to TP-B.
3. Adjust S11 to obtain a straight line waveform.
-
-
-
S12 (CHROMA) 1. Set the menu A GB/Component to Component.
[SERVICE MENU] 2. Supply an NTSC color bar input to Component
-38-
In.
3. Connect oscilloscope to TP-B.
4. Adjust S 12 to obtain a straight line waveform.
5. Return the menu RGB/Component to original
setting.