Diagrams; Ciecuit Boards Location - Sony HCD-DR3 Service Manual

5-1. CIRCUIT BOARDS LOCATION
TR board
MAIN board
CONNECTOR board
LED board
CD KEY board
CD SW board
AMS board
CD SENSOR board
MOTOR board
DISC NO board
SECTION 5

DIAGRAMS

POWER (AMP) board
POWER SUPPLY board
PHOTO SOCKET board
AC SWITCH board
REM board
FRONT board
VR board
H/P board
MOTOR (6P)(C) board
CD DECODE board
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in and 1 / W or less unless otherwise
4
specified.
• % : indicates tolerance.
• ¢ : internal component.
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
g : MD/VIDEO
i : PHONO
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• : Through hole.
®
• : internal component.
¢
• b : Pattern from the side which enables seeing.
• Indication of transistor.
Q
B C E
This is omitted.
• Abbreviation
SP : Singapore model
MX : Mexican model
AR : Argentina model
AUS : Australian model
15 15
Waveform
MAIN BOARD
1
IC103 @™
3.6 Vp-p
7.2 MHz
5
L809 5
32 Vp-p
111.7 kHz
6
L809 6
96 Vp-p
111.0 kHz
FRONT BOARD
2
IC601 !§
3.8 Vp-p
6 MHz
CD DECODE BOARD
3
IC01 #£
1.3 Vp-p
4
IC02 &¡
5.0 Vp-p
16.9345 MHz