Sony CFD-G700CP / CFD-G770CP / CFD-G770CPK Service Manual ▷ View online
25
CFD-G700CP/G770CP/G770CPK
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM FREQUENCY COVERAGE ADJUSTMENT (SP, E41, AUS)
Frequency Display
531 kHz
1,611 kHz
Reading on Digital voltmeter
1.0
±
0.05 V
5.0
±
0.7 V
Adjustment Part
L4
<confirmation>
AM FREQUENCY COVERAGE ADJUSTMENT
(EXCEPT SP, E41, AUS)
Frequency Display
530 kHz
1,710 kHz
Reading on Digital voltmeter
1.0
±
0.05 V
5.2
±
0.7 V
Adjustment Part
L4
<confirmation>
AM TRACKING ADJUSTMENT (SP, E41, AUS)
Adjust for a maximum reading on level meter.
L3
CT3
621 kHz
1,404 kHz
AM TRACKING ADJUSTMENT (EXCEPT SP, E41, AUS)
Adjust for a maximum reading on level meter.
L3
CT3
620 kHz
1,400 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
87.5 MHz
108 MHz
Reading on Digital voltmeter
1.3
±
0.3 V
3.0
±
0.2 V
Adjustment Part
<confirmation>
L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
87.5 MHz
108 MHz
Adjustment Location: See page 26.
TUNER SECTION 0 dB = 1
µ
V
• AM Section
Setting:
RADIO BAND•AUTO PRESET button: AM
RADIO BAND•AUTO PRESET button: AM
•
Repeat the procedures in each adjustment several times, and
the tracking adjustments should be finally done by the trimmer
capacitors.
the tracking adjustments should be finally done by the trimmer
capacitors.
•
Remove FM antenna in FM adjustment.
• FM Section
Setting:
RADIO BAND•AUTO PRESET button: FM
RADIO BAND•AUTO PRESET button: FM
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
modulation by
400 Hz signal
Output level:
as low as possible
Put the loop
antenna close to
the set.
antenna close to
the set.
+
–
–
level meter
set
32
Ω
i
jack (J391)
FM RF signal
generator
75 kHz frequency
deviation by 1 kHz
signal
Output level:
as low as possible
deviation by 1 kHz
signal
Output level:
as low as possible
+
–
–
level meter
set
32
Ω
0.01
µ
F
TUNER board
TP (GND)
TP (GND)
TUNER board
TP-ANT(JW2)
TP-ANT(JW2)
i
jack (J391)
digital voltmeter
TP (CV)
TP (GND)
100 k
Ω
TUNER board
26
CFD-G700CP/G770CP/G770CPK
Adjustment Location:
L3,CT3
AM TRACKING ADJUSTMENT
AM TRACKING ADJUSTMENT
L1,CT1
FM TRACKNG
ADJUSTMENT
FM TRACKNG
ADJUSTMENT
L2
FM FREQUENCY
COVERAGE
ADJUSTMENT
FM FREQUENCY
COVERAGE
ADJUSTMENT
L4
AM FREQUENCY COVERAGE
ADJUSTMENT
AM FREQUENCY COVERAGE
ADJUSTMENT
TP-ANT
(JW2)
(JW2)
L3
IC1
CT3
CT1
L4
L2
T2
T1
L1
– TUNER BOARD (Component Side) –
TP
(GND)
TP
(CV)
TP-ANT
JW2
– TUNER BOARD (Conductor Side) –
T1
AM IF
ADJUSTMENT
AM IF
ADJUSTMENT
T2
FM IF
ADJUSTMENT
FM IF
ADJUSTMENT
27
27
CFD-G700CP/G770CP/G770CPK
CFD-G700CP/G770CP/G770CPK
• Circuit Boards Location
SECTION 7
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in
Note:
• All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
•
H
: adjustment for repair.
•
A
: B+ Line.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
– BD90 Board –
no mark : CD PLAY
– TUNER Board –
no mark : FM
(
– BD90 Board –
no mark : CD PLAY
– TUNER Board –
no mark : FM
(
) : AM
– TC Board –
no mark : FM
(
no mark : FM
(
) : PB
<
> : REC
[
] : CD PLAY
– Other Boards –
no mark : CD PLAY
no mark : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: TAPE PLAY
a
: TAPE REC
J
: CD
d
: LINE IN
• Abbreviation
AUS
: Australian model.
CND
: Canadian model.
E41
: AC 230 V area in E model.
E92
: AC 120 V area in E model.
MX
: Mexican model.
SP
: Singapore model.
For Printed Wiring Boards.
Note:
•
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
Q
E
Note:
The components identi-
fied by mark
fied by mark
0
or dot-
ted line with mark
0
are
critical for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés
par une marque
par une marque
0
sont cri-
tiques 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.
TC board
TUNER board
CD KEY board
AUDIO IN board
LED2 board
LED4 board
LED1 board
LED3 board
LCD board
WOOFER KEY board
BD90 board
POWER board
MAIN board
HEADPHONE board
POWER KEY board
MICROPHONE board
(CFD-G770CPK only)
(CFD-G770CPK only)
D-LIGHT board
(CFD-G700CP only)
(CFD-G700CP only)
VOLUME KEY board
BATTERY board
28
28
CFD-G700CP/G770CP/G770CPK
CFD-G700CP/G770CP/G770CPK
7-1. BLOCK DIAGRAM – TUNER/CD SECTION –
O-TU-CE
22
O-TU-CLK
24
O-TU-DI
25
I-TU-DO
23
SYSTEM CONTROLLER
IC801(1/2)
10
LID-OPEN
SW2
19
L1
L3
FERRITE-ROD
ANTENNA
D1
D11
D10
2
24
21
22
20
FM
MIX
FM RF IN
FM RF OUT
FM OSC
AM RF IN
AM OSC
FM
OSC
AM
MIX
AM
OSC
OSC
OUT
OUT
4
MIX OUT
16
IF
BUFFER
CF2
CF4
7
6
FM IF-IN
AM IF-IN
FM
MPX
FM/AM
BUFFER
FM
DET
AM
DET
15
A
DET OUT
17
MUTE
12
11
R-CH
R-CH
10
FM/AM FRONT-END
IF AMP,DET,FM MPX
23
5
RADIO 6V
QUAD
VCC1
VCC2
MAIN
SECTION
(Page 29)
(Page 29)
T2
CE
12
11
14
13
14
13
MO/ST
BAND
10
4
2
3
1
20
19
FM/AM PLL
IC2
FM IN
AM IN
VDD
XOUT
XIN
CL
DI
DO
IF IN
MO/ST
6V
X1
75kHz
TU-L
RADIO 6V
CT1
L2
D2
RADIO 6V
CT3
RADIO 6V
D3
L4
ANTENNA
FM
TELESCOPIC
IC1
T1
18 LP OUT
1
VDD
CD+3.3V
CD+1.5V
5 VOUT
16 PD
18
ST IND
8
ST IND
7
BAND
IFOUT
MPX-IN
O-TU-MUTE
26
RADIO 6V
ANT1
17 LP IN
L1, CT1
FM
TRACKING
L2
FM
FREQUENCY
COVERAGE
L3, CT3
AM
TRACKING
L4
AM
FREQUENCY
COVERAGE
T1
AM IF
T2
FM IF
B
MAIN
SECTION
(Page 29)
OPTICAL PICK-UP
BLOCK
(KSM-213CDP)
AUTOMATIC
POWER
CONTROLLER
Q301
+1.7V
+3.3V
LD
GND
FOCUS
COIL
F+
F
T+
T
SP+
SP
SL+
SL
TRACKING
COIL
IC401
S201
(LIMIT)
X102
16.934MHz
+3.3V
SL/SP MOTOR
DRIVER
IC101
RF AMP,DSP,MP3
IC201
+1.5V REG
26
20
27
18
17
VR
PD
2
1
12
11
3
24
7
MUTE
M
M
(SPINDLE)
(SLED)
VCC
VC
A
B
C
D
E
F
DETECTOR
FN11(A)
FP11(B)
TN1(E)
100
TP1(F)
98
LDo
91
42
13
20
10
21
9
BUCK(CLK)
RST
CCE
P100
SBSY
27
RO
30
LO
24 XO
23 XI
95
97
FN12(C)
94
FP12(D)
96
CD-L
12
11
9
23
BUS3
40
41
42
43
48
54
37
BUS2
39
BUS1
38
BUS0
BUCK(CLK)
I-MP3-RST
O-MP3-CCEN
I-MP3-REQ
I-MP3-SBSY
I/O-MP3-BUS3
7
8
17
18
3
43
19
I/O-MP3-BUS2
6
I/O-MP3-BUS1
5
I/O-MP3-BUS0
O-MP3-M-MUTE
4
FOCUS/TRACKING
COIL DRIVER
15
16
12
11
10
13
14
9
7
8
5
6
4
1
3
2
M401
M402
VD4+
VD4-
VD3+
VD3-
VO1+
VO1-
VO2-
VO2+
IN1
IN2'
IN3'
BIAS
IN4'
IOO(/MSO)
DMO
FMO
TRo
VREF
F0o
I01(/UHS0)
MD1
PUSH
OPEN/CLOSE
: FM
: AM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH.
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