Read Sony CFD-G55 Service Manual online
17
17
CFD-G55
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. p: pF.
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 12 V and fed with regulated dc power
• Power voltage is dc 12 V and fed with regulated dc power
supply from battery terminal.
• 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.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: PB
a
: REC
J
: CD
d
: LINE IN
• Abbreviation
CND : Canadian model.
EA
EA
: Saudi Arabia model.
MY
: Malaysia model.
SP
: Singapore model.
E92
: Chilean and Peruvian model.
MX
: Mexican model.
• WAVEFORMS
– TUNER Section –
SECTION 5
DIAGRAMS
5-1. Circuit Boards Location
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
1
IC2
w;
(XOUT)
1.4 Vp-p
13.3
µ
s
500 mV/DIV, 4
µ
s/DIV
– TC Section –
2
Q301 collector (TAPE REC)
3.1 Vp-p
18
µ
s
1 V/DIV, 10
µ
s/DIV
– CD Section –
3
IC701
rk
(XOUT)
4.2 Vp-p
59 ns
1 V/DIV, 20 ns/DIV
– MAIN Section –
4
IC801
ua
(XT2)
3.6 Vp-p
30.5
µ
s
1 V/DIV, 10
µ
s/DIV
5
IC801
ug
(X2)
3.7 Vp-p
238 ns
1 V/DIV, 100 ns/DIV
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
BATT board
CD board
PDW board
MAIN board
L-R/REG board
TC board
TRANS board
LCD board
BATT COM board
POWER board
VOL SEL board
TUNER board
HEADPHONE board
CONTROL (CD) board
CONTROL (POWER) board
CONTROL (VOL) board
Ver 1.1 2002.05
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