Sony XVM-B62 Service Manual page 17

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1 / W or less unless otherwise
4
specified.
• % : indicates tolerance.
• : internal component.
f
• C : panel designation.
Note: Note:
The components identi- Les composants identifiés par
une marque 0 sont critiques
fied by mark 0 or dotted
line with mark 0 are criti- pour la sécurité.
cal for safety. Ne les remplacer que par une
Replace only with part piéce por tant le numéro
spécifié.
number specified.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Power voltage is dc 14.4 V from ACC of connection cord
and fed with regulated dc power supply.
• Voltage and waveforms are measured at input the color
bar signal from the CVBS1 (VIDEO 1) of connection cord.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
g : VIDEO
for printed wiring boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
XVM-B62
• Waveforms (MAIN Board)
1 7
IC401 r; (X2) IC501 wk (VCOMOUT)
3.3 Vp-p
2H
4.19 MHz
1 V/div, 0.1 µ sec/div 1 V/div, 50 µ sec/div
2 8
IC401 rd (VSYNC) IC501 ef (CSYNCOUT)
3.2 Vp-p
H
V
1 V/div, 2 msec/div 1 V/div, 20 µ sec/div
3 9
IC102 7 (VO) IC501 eh (POL)
1 Vp-p
H
2H
0.5 V/div, 10 µ sec/div 1 V/div, 50 µ sec/div
4 0
IC501 ql (B-OUT) IC501 rh (CSYNCIN)
3.3 Vp-p
H
2H
1 V/div, 20 µ sec/div 0.5 V/div, 10 µ sec/div
5 qa
IC501 wa (G-OUT) IC501 ts (YIN)
3.3 Vp-p
H
2H
1 V/div, 20 µ sec/div 0.5 V/div, 10 µ sec/div
6 qs
IC501 wh (R-OUT) IC501 tj (CIN)
3.3 Vp-p
H
2H
1 V/div, 20 µ sec/div 0.5 V/div, 10 µ sec/div
17
qd
IC501 yd (VXO-NTSC)
2 Vp-p
3.58 MHz
0.2 V/div, 200 nsec/div
qf
IC801 2 (IVIY)
3.2 Vp-p 3.2 Vp-p
V
1 V/div, 2 msec/div
qg
IC801 4 (ICSY)
2 Vp-p
H
1 V/div, 20 µ sec/div
qh
IC801 0 (OPOLS)
0.8 Vp-p
2H
1 V/div, 50 µ sec/div
qj
IC801 qf (IOHSY)
1 Vp-p
H
1 V/div, 20 µ sec/div
qk
IC801 ek (OOE1)
1 Vp-p
3.2 Vp-p
H
1 V/div, 20 µ sec/div
17
XVM-B62
ql
IC801 r; (OSTV2)
3.2 Vp-p
0.2 Vp-p
V
1 V/div, 2 msec/div
w;
IC801 rs (OCPV)
3.6 Vp-p
14.4 MHz
1 V/div, 20 nsec/div
wa
IC701 7 (OUT1)
3.2 Vp-p
7 Vp-p
4.1 µ sec
5 V/div, 2 µ sec/div
ws
Q652 E
2 Vp-p
7 Vp-p
2H
2 V/div, 50 µ sec/div
3.2 Vp-p