Schematic Diagrams; Waveforms - Sony RDR-GX300 Service Manual

RDR-GX300/GX700
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3 7 6 3 1 5 1 5 0

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.
• U : B+ Line
• V : B– Line
• Circled numbers refer to waveforms.
• Voltages are dc between measurement point.
• 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.
T E
The components identified by mark 0 or dotted L 1 3 9 4 2 2 9 6 5 1 3
Note :
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.
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WAVEFORMS

AV-84
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4-3
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8
WAVEFORMS
AV-84
BOARD
1
IC405 6
4.2 Vp-p
54.3 ns
2
IC603 0
3.1 Vp-p
30.4 us
3
IC603 qs
Q Q
3 7 6 3
5.2 Vp-p
100 ns
4
IC603 <zzb
1.0 Vp-p
225.5 ns
5
IC607 7
5.5 Vp-p
225.5 ns
u 1 6 3
.
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2 4
9 9 8
6 qa
IC802 w;
IC802 ed
1.0 Vp-p
H H
7
IC802 ws
1.0 Vp-p
H
8
IC802 wf
1 5 1 5 0 8 9 2 4
2.0 Vp-p
H
9
IC802 wl
2.1 Vp-p
H
0
IC802 ea
1.3 Vp-p
H
m
c o
4-4
2
9 9
1.0 Vp-p
9 8 2 9 9