Note For Printed Wiring Boards And Schematic Diagrams - Sony HCD-RV7 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-6.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• VIDEO board is multi-layer printed board.
However, the patterns of intermediate-layer have not been
included in diagram.
• Indication of transistor.
C
Q
These are omitted.
B E
Q
B C E
These are omitted.
Q
T E
L 1 3 9 4 2 2 9 6 5 1 3
B C E
These are omitted.
w w w
.
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Note on Schematic Diagram:
• 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 Ω and 1 / W or less unless otherwise
4
specified.
• : internal component.
f
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• 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.
F
: TUNER (FM/AM)
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G : REC
J : CD PLAY (AUDIO)
L : CD PLAY (VIDEO)
q : MD/VIDEO (AUDIO) IN
j : GAME INPUT (AUDIO)
k : GAME INPUT (VIDEO)
f : AUDIO OUT
N
: MIC INPUT
• Abbreviation
EA : Saudi Arabia model
MY : Malaysia model
SP : Singapore model
TH : Thai model
x a o u 1 6 3
y
i
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8 9
• Circuit Boards Location
CD OPEN board
CD SWITCH board
PANEL board
PAD SWITCH board
GAME IN board
Q Q
3 7 6 3 1 5 1
SENSOR (CD) board
DRIVER board
SW board
HEAD (A) board
c o
.
27 27
2 4 2
9 8
VIDEO board
SUB-TRANS board
MAIN TRANS board
SENSOR board
POWER board
VOL board
5 0 8 9 2 4 9 8
MOTOR board
BD board
m
HEAD (B) board
HCD-RV7/RV8
9 9
SUB WOOFER board
(HCD-RV8)
TUNER PACK
MAIN board
2 9 9