Schematic Diagrams; Waveforms - Sony RDR-HX825 Service Manual

RDR-HX820/HX825

4-2. SCHEMATIC DIAGRAMS

THIS NOTE IS COMMON FOR SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
(For schematic diagrams)
• All capacitors are in µF unless otherwise noted. pF : µµF.
50V or less are not indicated except for electrolytics and
tantalums.
• All resistors are in ohms, 1/4 W (Chip resistors : 1 /10 W) un-less
otherwise specified.
kΩ=1000Ω, MΩ=1000kΩ.
• Caution when replacing chip parts.
New parts must be attached after removal of chip.
Be careful not to heat the minus side of tantalum capacitor, be-
cause it is damaged by the heat.
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
• 2 : non flammable resistor
• 5 : fusible resistor
• C : panel designation
• f : internal component
• C : adjustment for repair
G
• : IN/OUT direction of (+/–) B line
• U : B+ Line
• V : B– Line
• Circled numbers refer to waveforms.
• Voltages are dc between measurement point and ground.
• Readings are taken with a color-bar signals on DVD reference
disc.
• Readings are taken with a digital multimeter (DC 10MW).
• Voltage variations may be noted due to normal production toler-
ances.
Note : The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
When indicating parts by reference number, please include
the board name.

WAVEFORMS

AV-106/RD-064
4-3
WAVEFORMS
AV-106
BOARD
1 7
X602 J703 COMPONENT P
4.2 Vp-p
H
100 ns
2 8
X603
J703 COMPONENT Y
H
30.5 µs
1.2 Vp-p
3 9
J702 S-VIDEO C CN805 r;
1.2 Vp-p
H
0
4
J702 S-VIDEO Y X1401 (RDR-HX820)
1.6 Vp-p
H
54.3ns
5
J702 VIDEO
1.2 Vp-p
H
6
J703 COMPONENT P
B
1.1 Vp-p
H
RD-064
BOARD
1
X201
R
1.1 Vp-p
40 ns
2
X301
1.7 Vp-p
69.8 ns
3
X701
2.0 Vp-p
H
40.7 ns
4
X801
4.5Vp-p
37 ns
5
X901
100 ns
4-4
1.7 Vp-p
2.1 Vp-p
3.8 Vp-p
1.5Vp-p
4.0Vp-p