Sony CFD-G70L Service Manual ▷ View online
36
CFD-G70L
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µF unless otherwise noted. pF: µµF
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.
•
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.
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.
• H : adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 9 V and fed with regulated dc power
• H : adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CONTROL
CIRCUIT
CCB
INTERF
ACE
1
2
3
4
5
6
7
8
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
15
14
13
12
11
10
9
DI
CE
VSS
TEST
LOUT
LBASS2
LBASS1
LTRE
LIN
LSELO
TAPE
TUN
LINE
CD
NC
CL
VDD
VREF
RVREF
LVREF
NC
ROUT
RBASS2
RBASS1
RTRE
RIN
RSELO
TAPE
TUN
LINE
CD
NC
• Voltage 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
IC321 LC75342
37
CFD-G70L
• Waveforms
1
2
IC701 qd FE
VOLT/DIV : 0.1 V AC
TIME/DIV : 20 msec
TIME/DIV : 20 msec
1
3
VOLT/DIV : 0.1 V AC
TIME/DIV : 20 msec
TIME/DIV : 20 msec
4
VOLT/DIV : 1 V AC
TIME/DIV : 20 msec
TIME/DIV : 20 msec
IC701 4 RF
VOLT/DIV : 0.2 V AC
TIME/DIV : 0.5
TIME/DIV : 0.5
µsec
IC701 qg TE
– CD SECTION –
Vp-p (LPC ON)
0.83-0.87
Vp-p (LPC OFF)
0.82-0.88
1
VOLT/DIV : 1 V AC
TIME/DIV : 0.1
TIME/DIV : 0.1
µsec
2
VOLT/DIV : 1 V AC
TIME/DIV : 2
TIME/DIV : 2
µsec
1
VOLT/DIV : 50mVAC
TIME/DIV : 5
TIME/DIV : 5
µsec
IC802 es
IC802 ud
IC2 w;
– MAIN SECTION (1/2) –
– TUNER SECTION –
390mVp-p
75kHz
1
Q301 C
VOLT/DIV : 1 V AC
TIME/DIV : 5
TIME/DIV : 5
µsec
– TC SECTION –
IC701 rk
2 Vp-p
(TAPE, CD mode)
2
T301 1
VOLT/DIV : 10 V AC
TIME/DIV : 5
TIME/DIV : 5
µsec
0.6 Vp-p
4.0 Vp-p
33.86 MHz
3.6 Vp-p
4 MHz
3.2 Vp-p
153 kHz
4.6 Vp-p
60 kHz
4.2 Vp-p
60 kHz
38
CFD-G70L
SECTION 6
EXPLODED VIEWS
NOTE :
• -XX, -X mean standardized parts, so they
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Items marked “ * ”are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference
number in the exploded views are not
supplied.
supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
parts list.
• Abbreviation
IT
: Italian
AR
: Argentine
SP
: Singapore
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
6-1. CABINET (FRONT) ASSY
1
X-3380-605-1 CABINET (FRONT) SUB ASSY
2
3-231-280-01 SHEET (WOOFER.B)
3
X-3380-606-1 COVER ASSY, WOOFER
4
3-231-279-01 SHEET (WOOFER.A)
5
3-231-275-11 WINDOW (LCD)
6
3-230-780-01 BUTTON (PDW)
7
3-230-781-01 BUTTON (FRONT)
8
3-231-254-01 SHEET (DIFFUSION) (PDW)
* 9
1-681-298-11 CONTROL-1 BOARD
10
4-951-620-11 SCREW (2.6X10), +BVTP
11
3-230-787-01 LID, BATTERY CASE
* 12
1-681-299-11 CONTROL-2 BOARD
13
4-951-620-01 SCREW (2.6X8), +BVTP
14
3-831-441-99 CUSHION, STOPPER
* 15
1-681-301-11 HEADPHONE BOARD
16
3-230-779-01 BUTTON (SURROUND)
17
3-231-255-01 SHEET (DIFFUSION) (SURROUND)
* 18
1-757-781-11 CABLE, FLEXIBLE FLAT (9 CORE)
19
3-230-770-11 BUTTON (POWER)
20
X-3380-607-1 BUTTON (TOP) SUB ASSY
21
3-230-769-01 BUTTON (VOLUME)
22
3-921-725-01 SCREW (2.6X10), +PWH
23
3-036-274-01 FOOT, RUBBER
SP391
1-544-790-11 SPEAKER (10cm)
SP392
1-544-790-11 SPEAKER (10cm)
SP393
1-544-791-11 SPEAKER (8cm)
SP394
1-544-792-11 SPEAKER (5cm)
SP395
1-544-792-11 SPEAKER (5cm)
The components identified by
mark 0 or dotted line with mark
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
6
7
8
9
10
18
17
16
22
15
19
13
21
12
13
13
13
13
13
14
13
1
23
3
5
2
4
13
20
#1
#1
#1
#2
#2
#2
#2
#3
#3
#1
#1
#1
SP393
SP392
SP395
SP391
SP394
not supplied
11
13
23
39
CFD-G70L
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
3-231-283-01 TERMINAL, ANTENNA
* 52
A-3062-465-A TUNER BOARD, COMPLETE
53
3-230-784-01 CHASSIS (TU)
54
3-230-783-01 CHASSIS (TRANS)
* 55
1-681-302-11 POWER BOARD
* 56
1-681-303-11 AC INLET BOARD
57
X-3380-604-1 HOLDER ASSY, CASSETTE
58
3-230-774-01 LID (CD)
59
1-452-899-11 MAGNET
60
3-231-285-01 SPRING (CASSETTE)
61
3-019-395-01 PLATE, CHUCKING
62
3-231-284-01 SPRING (CD)
63
3-230-776-01 HANDLE
64
3-230-772-11 CABINET (REAR) (AEP,IT,UK)
64
3-230-772-31 CABINET (REAR) (AR,CIS,SP)
* 65
1-681-307-11 BAATT COM BOARD
66
4-960-167-01 SCREW (3X8) (DIA. 10), +WH
* 67
1-681-304-11 BATT BOARD
69
3-831-441-99 CUSHION, SPEAKER GRILLE (FAB-NW)
ANT1
1-501-883-21 ANTENNA, TELESCOPIC
0 F902
1-532-504-00 FUSE T4A 250V
58
60
57
59
61
62
63
67
66
65
64
51
53
54
52
56
#1
#1
#4
#1
#1
#1
#1
#1
#1
#1
#1
#1
not
supplied
supplied
F902
not
supplied
supplied
ANT1
#5
#1
#1
69
55
6-2. CABINET (REAR) ASSY
The components identified by
mark 0 or dotted line with
mark 0 are critical for safety.
Replace only with part num-
ber specified.
mark 0 or dotted line with
mark 0 are critical for safety.
Replace only with part num-
ber specified.
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