Sony ICF-CD831 / ICF-CD831L Service Manual ▷ View online
ICF-CD831/CD831L
25
25
5-12. PRINTED WIRING BOARDS — KEY SECTION — • Refer to page 15 for Circuit Boards Location and page 19 for Common Note on Printed Wiring Boards.
1
A
B
C
D
E
F
G
2
3
4
5
6
7
8
9
10
11
12
13
14
B
KEY (A) BOARD
1-687-044-
11
R604
R603
R602
R601
R606
R605
R619
R617
R610
R609
R621
R641
R643
Q601
R644
C601
R618
R608
R626
R625
R624
R623
R630
R629
R628
R627
R612
R633
R632
R635
R634
R637
R636
R639
R638
R640
R631
R622
R613
R642
R615
R614
C602
R646
W601
CN601
R645
Q602
E C B
E C B
S601
OFF/x
S603
CD/u
S608
NAP
D602
NAP
TIME SET
S605
SLEEP
S610
ALARM SET
S611
ALARM MODE
S606
SNOOZE/SLEEP OFF
ALARM RESET
S602
RADIO
ON
S607
ALARM
SET
S609
S604
D601
BUZZER RADIO CD OFF
S612
ALARM MODE
BUZZER RADIO CD OFF
1
1
3
9
/>
/.
B
SLEEP
B
A
MAIN BOARD
W403
A
R657
R658
R658
R655
R656
R656
R653
R654
R651
1
3
11
1-687-045-
W601
R661
R662
R663
R663
R660
R652
R659
S653
CLOCK/
TRACK
S652
BRIGHTNESS
S651
CD PLAY MODE
SHUFFLE
REPEAT
SHUFFLE
REPEAT
NORMAL
KEY (B) BOARD
ICF-CD831
(Page 22)
ICF-CD831L
(Page 23)
ICF-CD831/CD831L
26
26
5-13. PRINTED WIRING BOARD — DRIVE SECTION — • Refer to page 15 for Circuit Boards Location and page 19 for Common Note on Printed Wiring Boards.
1
A
B
C
D
E
2
3
4
5
6
7
8
DRIVE BOARD
R515
R516
R518
R519
LED501
LED DISPLAY
R517
B
E
E
C
Q515
B
E
E
C
Q516
B
E
E
C Q517
R514
B
E
E
C
Q514
R513
B
E
E
C
Q513
R512
B
E
E
C
Q512
W401
W501
R511
B
E
E
C
Q511
R510
B
E
E
C
Q510
R509
B
E
E
C
Q519
R508
B
E
E
C
Q518
R507
B
E
E
C
Q517
R506
B
E
E
C
Q506
R505
WHT
B
E
E
C
Q505
R504
B
E
E
C
Q504
R503
B
E
E
C
Q503
R502
B
E
E
C
Q502
R501
B
1-687-042-
11
E
C
Q501
18
1
1
1
18
21
A
MAIN BOARD
W401
ICF-CD831
(Page 22)
ICF-CD831L
(Page 23)
Q501
B-8
Q502
B-7
Q503
B-7
Q504
B-7
Q505
B-6
Q506
B-6
Q507
B-6
Q508
B-5
Q509
B-5
Q510
B-5
Q511
B-4
Q512
B-4
Q513
B-4
Q514
B-3
Q515
B-3
Q516
B-2
Q517
C-2
LED501
D-5
• Semiconductor
Location
Ref. No.
Location
ICF-CD831/CD831L
27
27
5-14. PRINTED WIRING BOARD — TRANSFORMER SECTION — • Refer to page 15 for Circuit Boards Location and page 19 for Common Note on Printed Wiring Boards.
1
A
B
C
D
E
F
G
H
2
3
4
5
6
7
TRANSFORMER BOARD
C901
JW901
R901
C907
C906
C905
D905
D906
F901
L902
L901
AC IN
WHT
BLK
C903
C904
T901
POWER TRANSFORMER
R902
EXCEPT CND, MX MODEL
CND, MX MODEL
C902
D902
D901
JW902
D904
D903
CH901
1
5
1-687-043-
11
C
MAIN BOARD
CN901
ICF-CD831
(Page 22)
ICF-CD831L
(Page 23)
Ver 1.1
ICF-CD831/CD831L
28
28
IC701 LC78646E-E (CD Board)
5-15. IC BLOCK DIAGRAMS
60
59
58
57
56
55
54
53
52
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
SLCO
SLCIST
EFMIN
RF
FDO
SPDO
SLDO
GPDAC
FDO
SPDO
SLDO
GPDAC
CONT4
CONT5
SBCK/CONT6
SBCK/FG
DEFECT
CONT4
CONT5
SBCK/CONT6
SBCK/FG
DEFECT
V/P
V/P
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
V/P
FSEQ
MONI1
MONI2
MONI3
MONI4
MONI5
VSS
VDD(3.3V)
69 68 67 66
65 64 63 62 61
VSS
VDD5
DRF
RES
WRQ
DO
DI
CL
CE
79
78 77 76 75 74 73 72 71
LDS
80
LDD
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT1
CONT2
70
CONT3
WRQ
DO
DI
CL
CE
CE
FR
VVDD
PCKIST
VVSS
SBCK/FG
PDO2
PDO1
CONT1-3
SBCK/CONT6
CONT4,5
CONT4,5
DRF
WRQ
DO
DI
CL
CE
LDS
LDD
LDS
LDD
FR
VVDD
PCKIST
VVSS
PDO2
PDO1
CONT1
CONT2
CONT3
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
FIN1
FIN2
TIN1
TIN2
REFI
REFI
DEFECT
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
SLCO
SLCIST
EFMIN
RF
FIN1
FIN2
TIN1
TIN2
VREF
REFI
FE
TEC
TE
RFMON
JITTC
JITTC
ADAVDD
ADAVSS
ADAVDD
ADAVSS
TDO
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
DATA
DATACK
LRSY
RVDD
RVSS
RCHO
LCHO
LVSS
LVDD
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
FSX/16MIN
EFLG
C2F
FSX/16MIN
XVSS
XIN
XOUT
XVDD
16MOUT
XVSS
XIN
XOUT
XVDD
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
16MOUT
EFLG
C2F
FSX/16MIN
XVSS
XIN
XOUT
XVDD
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
39 40
DOUT
TEST
51
50
49
48
47
46
45
44
43
42
41
+
–
MIX
PH
BH
MONI
CONT
CONT
EQ
+
–
+
–
+
–
+
–
+
–
+
–
LPF
TBAL
TBAL
RAM
TDO
TRACK JUMP
SW
D/A
APC
SUBCODE DECODE CRC
GENERAL PURPOSE
PORTS
8FS
DIGITAL FILTER
1BIT DAC
LPF
ERROR
CORRECTION
AUDIO CD
MONITOR SIGNAL SELECTOR
EXTERNAL
AUDIO IN
AUTO ADJUST
FRAME SYNC
DETECT,PROTECT,INSERT,
EFM DECODE
A/D
CLOCK
GENERATOR
COMMAND
INTERFACE
INTERFACE
SERVO PROCESSOR
LEVEL SET
+
–
S/H
SW
DRF
DRF
ATTENUATION
DEEMPHASIS
INTERPOLATION
MUTE
RUPTURE DEFECT
SLICE LEVEL
CONTROL
CLV,CAV
CONTROL
SERIAL
OUT
AUDIO OUT
RAM
JITTER
DETECT
PLL
VCEC
FE
TE
TEC
RF
RFMON
VREF
SPDO
SLDO
GPDAC
FSEQ
MONI1-5
FDO
LPF
LPF
AGC
1
2
3
4
5
6
7
8
9
10
11
12
13
13
14
28
27
26
24
23
22
21
20
19
18
17
16
15
25
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT-DOWN
MONITOR
LEVEL
SHIFT
LEVEL
SHIFT
D.BUFF
D.BUFF
D.BUFF
GND
SLIN
(SLIN)
VREF
VCC
VCC
(FIN)
FIN
F–
F+
SL–
SL+
NC
OPIN
SP–
REG–B
SP+
SPIN
RST
REGO
MUTE
GND
TIN
(TIN)
T–
T+
GND
OPOUT
D.BUFF
D.BUFF
D.BUFF
D.BUFF
D.BUFF
REGULATOR
DRIVER
MUTE
VCC
VCC
4
3
2
1
NC
ROUT
STBY
GND
6
5
NC
RIN
9
10
11
12
NC
LOUT
VCC
PP
7
8
DC
LIN
+
–
+
–
FILTER
AM RF IN
FM RF OUT
FM RF IN
RF GND
AM LOW
-CUT
MIX OUT
AGC
VCC
AM IF IN
FM IF IN
GND
TUN LED
ST LED
QUAD
FM OSC
AM OSC
AFC
DET OUT
MPX IN
LPF2
LPF1
L-OUT
R-OUT
7
5
4
3
1
2
6
8
9
12
10
11
14
15
16
17
18
19
21
20
24
23
RF VCC
22
13
DECODER
VCO
DIVIDER
ST/MONO
FM/AM
AF
AMP
FM
MUTE
AF BUFFER
FM
DET
AM
DET
AM
RF AMP
FM
RF AMP
FM
MIX
FM
OSC
AM
OSC
AM
MIX
TUN
LED
ST
LED
FM IF
AMP
AM IF
AMP
AGC
LEVEL
DET
IC702 BA5826FP-E2 (CD Board)
IC301 LA4627 (MAIN Board)
IC1 TA2111N (MAIN Board)
Click on the first or last page to see other ICF-CD831 / ICF-CD831L service manuals if exist.