HCD-GX30, HCD-RG22, HCD-RG33, MHC-GX30, MHC-RG22 - Sony Audio Service Manual (repair manual). Page 19

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HCD-GX30/RG22/RG33
SECTION 5
DIAGRAMS

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
/
4
 
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
• Indication of transistor.

Note:
The components identi-
fied by mark 
0
 or dotted
line with mark 
0
 are criti-
cal for safety.
Replace only with part
number specified.

Note:
Les composants identifiés par
une marque 
0
 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
•
A
: B+ Line.
•
B
: 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
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : FM
<
 
 
> :  CD
[
] : TAPE
• 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
: FM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
5-1. Circuit Boards Location
• Waveforms
KEYBOARD board
PANEL board
SUB TRANS board
MAIN board
CD board 
SENSOR board
TRANS board
VIDEO  board
POWER board
DRIVER board
MOTOR board
SPDL board
ADDRESS SENSOR board 
REM board 
5
 
Q209 Collector
(TAPE REC mode)
2
 
IC601 
qd
 (XT2)
1
 
IC751 
rf
 (XOUT)
4
 
IC102 
ws
 (XOUT)
2 V/DIV, 100 ns/DIV
5 V/DIV, 10   s/DIV
2 V/DIV, 10   s/DIV
2 V/DIV, 20 ns/DIV
3
 
IC601 
qh
 (CF2)
2 V/DIV, 40 ns/DIV
6
 
IC103 
qf
 (XO)
1 V/DIV, 100 ns/DIV
5.2 Vp-p
5.6 Vp-p
59 ns
222 ns
30.5   s
4.9 Vp-p
100 ns
5.0 Vp-p
13.5 Vp-p
17   s
231 ns
•
Abbreviation
AR
: Argentina model
AUS
: Australian model
E2
: 120V AC area in E model
E51
: 220V AC area in E model
EA
: Saudi Arabia model
MX
: Mexican model
SP
: Singapore model
TH
: Thai model
TW
: Taiwan model

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