Sony CFS-828SMK2 Service Manual ▷ View online
21
CFS-828SMK2
IC1 CXA1538S
• IC Block Diagrams
30
3
2
1
4
5
6
7
8
9
10
13
12
14
15
11
VCO
PD 1
PD 2
DECODE AMP
1/2 COUNTER
REGULATOR
FM FE
AM FE
TUNING IND
RIPPLE FILTER
AM IF/DET
FM IF/
DISCRI
MUTING
MULTIPLEX
REGULATOR
MO/ST
SW
AUTO
BLEND
DETUNE
MUTING
MUTING
CONTROL
29
28
27
26
25
24
23
22
21
20
19
18
17
16
DC
AMP
BU
AMP
BU
AMP
GND
PLL LPF2
PILOT DET
LPF2
PILOT DET
LPF2
PLL LPF1
RCH OUT
LCH OUT
ST IND/
VCO CHECK
VCC
RIPPLE
FILTER
AGC AFC1
AGC AFC2
GND
TUNE IND
FM IF IN
AM IF IN
BAND SELECT
VCO
MUTE
REG
AFC
MPX REG
FM DISCRI
AM OSC
FM OSC
FM RF
AM RF IN
FM RF IN
FE GND
FM/AM
FE OUT
DC
AMP
ST
MO
REC EQ
REC EQ
LOGIC
32
1
2
3
4
5
6
7
8
9
10
11
12
13
15
16
14
31
30
29
28
27
26
25
24
23
22
21
20
18
19
17
BIAS IN
LINE-OUT-R
LINE-OUT-L
CD-IN-R
CD-IN-L
RADIO-IN-R
RADIO-IN-L
MIC-IN
A-L
B-L
B-R
TR-B
TR-C
TAPE-MODE
FNC
LPF-L
LPF-R
τ
BIAS
GND
VCC
REQ-EQ-L
REC-EQ-R
REC-NF-L
REC-NF-R
TAPE-NF-L
TAPE-OUT-L
A-R
TAPE-NF-R
TAPE-OUT-R
MIC/HS
MIC-NF
HS:1.40V OUT
(LOW IMP.)
NOR:0.35V OUT
(HIGH IMP.)
ECM:OPEN
MIC:LOW
τ
IC301 BA3426AS
22
CFS-828SMK2
BASS
TREBLE
TREBLE
BASS
22
19
16
21 20
18
17
FLAT
FLAT
FLAT
FLAT
MIX
MIX
MIX
VREF
15
MUTE
τ
14
RR
ANALOG SWITCH
13
VCC
12
GND
REGULATOR
1
2
3
4
5
6
7
9
8
10
11
RCH IN
RCH NFB1
RCH BASS
RCH TREBLE
RCH NFB2
RCH OUT
CLASSIC
ROCK
JAZZ
POPS
FLA
T
GND
VCC
RIPPLE
REJECTION
MUTE
τ
REF VOL
TAGE
LCH OUT
LCH NFB2
LCH TREBLE
LCH BASS
LCH NFB1
LCH IN
BS
T.S.D
BS
FILTER
ST.BY
VCC
POWER
GND
PRE
GND1
PRE
GND2
1
2
3
4
5
6
7
8
10
9
12
11
14
15
13
IC303, 304 BA5417
IC302 AN7338K
23
CFS-828SMK2
SECTION 7
EXPLODED VIEWS
Ref. No.
Part No.
Description
Remark
7-1. CABINET (REAR) SECTION
Ref. No.
Part No.
Description
Remark
* 1
1-860-808-11 POWER BOARD
* 2
1-860-809-11 BATT (+) BOARD
3
3-236-183-01 TERMINAL (ANT)
* 4
1-860-810-11 BATT (–) BOARD
5
3-236-150-41 CABINET (REAR)
6
3-236-149-01 LID, BATTERY CASE
7
3-236-194-03 TERMINAL (+–) (B), BATTERY
8
3-236-207-03 TERMINAL (–), BATTERY
9
3-236-193-03 TERMINAL (+–) (A), BATTERY
* 10
A-4541-738-A DC IN BOARD, COMPLETE
11
3-261-339-01 CHASISS DC JACK
12
4-951-620-01 SCREW (2.6X8), +BVTP
ANT1
1-501-820-11 ANTENNA, TELESCOPIC (FM/SW)
0 F901
1-533-468-12 FUSE, GLASS TUBE (DIA.5) (2A/250V)
0 F902
1-533-468-12 FUSE, GLASS TUBE (DIA.5) (2A/250V)
0 F903
1-533-459-12 FUSE, GLASS TUBE (DIA.5) (0.25A/250V)
0 F904
1-533-471-12 FUSE, GLASS TUBE (DIA.5) (4A/250V)
0 T901
1-437-570-21 TRANSFORMER, POWER
#1
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
#2
7-685-650-79 SCREW +BVTP 3X16 TYPE2 N-S
#3
7-682-148-13 SCREW +P 3X8
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories list is given in the last of this parts
list.
R
R
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
3
2
10
12
11
4
5
6
7
7
9
8
ANT1
T901
F901
F902
F903
F904
#2
#2
#2
#3
#1
1
#1
#1
#1
#1
#1
not supplied
24
CFS-828SMK2
7-2. CABINET (FRONT) SECTION-1
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
3-236-130-02 KNOB (TUNE)
52
3-236-151-01 RING (KNOB)
53
3-236-132-02 GEAR (TUNE)
54
3-236-131-02 KNOB (VOL)
55
3-236-159-01 RING (VOL)
56
3-046-526-11 DIAL, JOG
57
3-236-128-01 WINDOW, SCALE
58
3-918-516-02 CUSHION, MICROPHONE
* 59
1-860-802-11 LED2 BOARD
60
3-236-129-02 POINTER
61
3-236-141-01 WINDOW (LED)
62
3-239-048-01 HOLDER (LED)
* 63
1-860-801-11 LED1 BOARD
* 64
1-860-805-11 H/P BOARD
* 65
1-860-806-11 VOL BOARD
66
3-236-143-01 KNOB (BAND)
* 67
A-4541-741-A MAIN BOARD, COMPLETE
68
3-236-140-02 CHASSIS (TUNE)
69
3-236-148-01 GEAR (VC)
70
3-259-212-01 HEAT SINK
* 71
A-3021-630-A TUNER BOARD, COMPLETE
* 72
A-4541-740-A MAXI BASS BOARD, COMPLETE
73
3-236-142-01 BUTTON (M.B)
74
3-241-390-01 SHEET (S2), ADHESIVE
75
3-236-147-01 GEAR, MIDWAY
76
3-236-145-01 KNOB (FT)
77
3-039-471-02 FOOT
78
3-236-189-01 SHEET (S), ADHESIVE
MIC301 1-542-527-11 MICROPHONE, ELECTRET CAP (MIC)
#1
#1
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
#4
7-685-645-79 SCREW +BVTP 3X6 TYPE2 N-S
#5
7-621-259-25 SCREW +P 2.6X4
51
52
53
54
55
56
57
58
64
59
MIC301
not supplied
not
supplied
not
supplied
(JOG board)
(JOG board)
not
supplied
(F/T board)
supplied
(F/T board)
60
61
63
66
65
70
67
68
69
66
71
72
62
73
75
76
77
74
78
#1
#1
#1
#4
#4
#1
#1
#5
#1
#1
#1
#1
#1
#1
#1
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