Sony 2500001, Service Manual

Page: 45 / 174

4-3
PVM-14L2/20L2
3. Connection diagram
CN701 CN1502
CN102 CN231 CN230
CN104
CN103
CN605 CN52 CN51
H G C
B
Q
CN450
CN452
CN2710 CN2705
SG
(VG-854)
equivalent
SG
(TG-2000)
equivalent
Set
4-2-2. NTSC SETUP 0 Mode Adjustment
4-2-2-1. Y/C Input
1. Input the NTSC SETUP 0 100 % color bar signal to
the Y/C IN connector of INPUT A.
2. Adjust Y LEVEL (AZ _ 29) of the menu until the
waveform at TP106 meets the standard value.
Standard value : A = 620
±
10 mV
3. Adjust C LEVEL (AZ _ 35) of the menu until the
waveform at TP107 meets the standard value.
Standard value : B = 620
±
10 mV
4. Adjust SUB CHROMA (A0 _ 75) of the menu until the
portions A and D of the waveform at TP350 (B board)
become flat.
5. Adjust SUB PHASE (A0 _ 8B) of the menu until the
portions B and C of the waveform at TP350 become
flat.
A
B
10 mV less
A B C D
10 mV less
A B C D