Sony ICD-SX68 / ICD-SX68DR9 / ICD-SX78 / ICD-SX88 Service Manual ▷ View online
ICD-SX68/SX68DR9/SX78/SX78DR9/SX88
ICD-SX68/SX68DR9/SX78/SX78DR9/SX88
25
25
4-13. SCHEMATIC DIAGRAM - MAIN BOARD (5/5) -
• See page 28 for IC Block Diagram.
MAIN BOARD
( 1 / 5 ) (Page 21)
( 3 / 5 ) (Page 23)
( 4 / 5 ) (Page 24)
( 3 / 5 ) (Page 23)
( 4 / 5 ) (Page 24)
14
MAIN BOARD
( 3 / 5 ) (Page 23)
46
MAIN BOARD
( 1 / 5 ) (Page 21)
11
MAIN
BOARD
( 1 / 5 )
(Page 21)
9
MAIN BOARD
( 1 / 5 ) (Page 21)
( 3 / 5 ) (Page 23)
( 4 / 5 ) (Page 24)
( 3 / 5 ) (Page 23)
( 4 / 5 ) (Page 24)
8
MAIN
BOARD
( 1 / 5 )
(Page 21)
47
MAIN BOARD
( 1 / 5 ) (Page 21)
( 3 / 5 ) (Page 23)
( 4 / 5 ) (Page 24)
( 3 / 5 ) (Page 23)
( 4 / 5 ) (Page 24)
40
MAIN BOARD
( 1 / 5 ) (Page 21)
( 3 / 5 ) (Page 23)
( 4 / 5 ) (Page 24)
( 3 / 5 ) (Page 23)
( 4 / 5 ) (Page 24)
8
MAIN BOARD
( 1 / 5 ) (Page 21)
( 3 / 5 ) (Page 23)
44
IC B/D
0
0
0
3
0
0
0
1
1
3
3 . 3
0
0
0
0
0
0
0
N o m a r k : R E C
MAIN BOARD
( 5 / 5 )
IC3404
REG
IC3403
POWER AMP
HOLD
V-UP
ON
OFF
DPC
ON
OFF
0.022
C3402
1
C3411
C3410
220p
1
C3407
MONO_OUT
SP_XMUTE_AA1
VDD_UNREG
SP_PWR_AA2
SP001
0.0022
C3412
UNREG35_DET
VDD_DDCOUT33
1
C3413
C3403
0.1
UP0487B008S0
Q3402
SWITCH
S
S
SM6801AB-G-EL
IC3403
1
2
3
4
5
6
7
8
90
11
12
1
13
14
15
16
17
10k
R3419
XC6219C292MR
IC3404
1
2
3
45
SP_OUT+
SP_OUT-
P
QE
_P
MA
PS
N
QE
_P
MA
PS
NE
X_
21
D
DV
_P
S
NT
SE
T
1S
SV
N
QE
P
QE
OUTP
VSS2
OUTN
VDD3
4
D
DV
N
W
DP
2
D
DV
NE
T
U
M
DRCN
VDD1
VREF1
IN
NC
VOUT
VIN
VSS
CE
VDD_IOA
VDD_GP1
VDD_L0
0.1
C1411
0.1
C1415
0.1
C1421
0.1
C1430
0.1
C1416
0.1
C1422
0.1
C1432
0.1
C1418
0.1
C1424
0.1
C1425
0.1
C1434
0.1
C1426
0.1
C1408
VDD_L1
0.1
C1438
0.1
C1446
0.1
C1447
0.001
C1427
VDD_PLL
DGND
0.1
C1437
0.1
C1429
0.1
C1419
0.1
C1441
470k
R6021
KEY_XVUP_AD3
470k
R6023
KEY_HOLD_AD5
KEY_XDPC_AD2
470k
R6006
VDD_GP1
VDD_PUP_Y2
0
R6005
0
R6020
0
R6022
JL6003
S6014
M
O
C1
2 3
K
M1
1R
B1
5
M
M
O
C2
6
K
K
M2
4
RB
RB
2
S6015
M
O
C1
2 3
K
M1
1R
B1
5
M
M
O
C2
6
K
K
M2
4
RB
RB
2
S6016
M
O
C1
2 3
K
M1
1R
B1
5
M
M
O
C2
6
K
K
M2
4
RB
RB
2
(SPEAKER)
ICD-SX68/SX68DR9/SX78/SX78DR9/SX88
ICD-SX68/SX68DR9/SX78/SX78DR9/SX88
26
26
4-14. PRINTED WIRING BOARDS - HPJACK BOARD, SW BOARD -
•
: Uses unleaded solder.
50
6
C
C
AUDIO BOARD
CN7002
(Page 16)
A
AUDIO BOARD
(Page 16)
/Y
Y
[
SW BOARD (SIDE A)
SW BOARD (SIDE B)
(
+
HPJACK BOARD (SIDE A)
HPJACK BOARD (SIDE B)
12
(12)
12
(12)
12
(12)
12
(12)
2
3
4
5
6
7
8
9
10
11
1
A
B
C
D
E
F
G
R6007
R6009
R6011
R6012
S6005
S6006
S6007
S6008
S6509
R6013
R6014
J3301
J3301
R3301
R3304
JL3411
JL3412
JL3413
JL3414
R3303
R3302
BLACK
BLUE
ORANGE
GRAY
BLUE
ORANGE
GRAY
S6010
ERASE
VOLUME
VOL
A-B /
–
+
–
LJ
LJ
LJ
LJ
LJ
LJ
LJ
LJ
11
6
11
6
11
6
16
16
16
16
6
5
4
11
01
90
31
16
21
S6511
S6512
D5004
(OPERATION)
C6004
0
R6015
S6002
1-872-143-
1-872-142-
1-872-142-
1-872-143-
ICD-SX68/SX68DR9/SX78/SX78DR9/SX88
ICD-SX68/SX68DR9/SX78/SX78DR9/SX88
27
27
4-15. SCHEMATIC DIAGRAM - HPJACK BOARD, SW BOARD -
A-B /
VOL
VOL
SW BOARD
HPJACK BOARD
C
AUDIO BOARD
CN7002
(Page 18)
A
AUDIO BOARD
(Page 18)
ERASE
VOLUME
10k
R6014
22k
R6015
2.2k
R6009
1k
R6007
2.2k
R6011
4.7k
R6013
0.1
C6005
S6007
1
3
2
4
CL-375HR/YG-D-TS
D5004
(OPERATION)
2
K
D
E
R
1
C
A
A
3
K
N
R
G
2.2k
R6012
0.1
C6004
S6006
1
3
2
4
S6008
1
3
2
4
S6005
1
3
2
4
JL6113
JL6114
JL6109
JL6110
JL6111
JL6112
JL6115
JL6116
JL6117
S6010
1
3
2
4
S6002
1
3
2
4
S6012
1
3
2
4
D
N
G
DGND
S
S6511
1
3
2
4
S6509
1
3
2
4
2
P
G_
D
D
V
D
E
R
X_
D
EL
P
O
N
R
G
X_
D
EL
P
O
3-
1
D
A_
Y
E
K
0
D
A_
Y
E
K
E
K
A
W_
Y
E
K
JL3412
JL3413
JL3414
JL3411
0
R3301
0
R3302
0
R3303
0
R3304
J3301
HPJ_XDET
HPJ_L
HPJ_R
HPJ_AGND
(2/2)
(2/2)
ICD-SX68/SX68DR9/SX78/SX78DR9/SX88
ICD-SX68/SX68DR9/SX78/SX78DR9/SX88
28
28
• IC Block Diagrams
IC3403 SM6801 AB-G-EL (MAIN Board (5/5))
IC3901 PCM3794RHBR (AUDIO Board (2/2))
AIN3L
AIN2L
AIN1L
AIN1R
AIN2R
AIN3R
AIN3R
23
25
27
26
24
22
21
4
18
V
COM
V
COM
V
IO
5
V
DD
6
DGND
12
V
PA
13
PGND
20 V
CC
19 AGND
ADC
Digital
Filter
MUX2
MUX4
ADC
(1)
Digital
Filter
(1)
(1)
Digital
Filter
ROUT
MXR
DAR
ADR
SW6
SW5
SW4
PG4
+30 to -12dB
+30 to -12dB
ADC
Digital
Filter
MUX1
MUX3
ADC
(1)
Audio Interface
Serial Interface
(SOI/I2C)
Clock
Manager
Power on
Reset
Power Up/Down
Manager
(1)
LOUT
MXL
DAL
ADL
SW6
SW5
SW4
SPL
PG3
PG1
PG5
PG2
PG6
0 or +20dB
0 to -21dB
0 to -21dB
+6 to -70dB
0 or +20dB
COM
Analog Input L-ch
Analog Input R-ch
SPOLP
15
LRCK
32
DIN
2
MODE
28
BCK
1
DOUT
3
SCKI
7
SPOLN
14
SPL
+6 to -70dB
SPOLP
11
SPOLN
10
HPL
+6 to -70dB
HPOL/LO
17
HPR
HPOR
HPOL
COM
MONO
HPC
+6 to -70dB
HPOR/LOR
16
HPCOM/MONO
9
HDTI
8
ATT
Mute
MC/SCL
31
MD/SDA
30
MS/ADR
29
Decimation Filter
Interpolation Filter
3-D Enhancement
3-BAND Tone Control
Notch Filter
Interpolation Filter
3-D Enhancement
3-BAND Tone Control
Notch Filter
Possible for Power Up/Down
8
4
TESTN
5
EQP
6
EQN
IN
3
VREF1
7
VSS1
2
VDD1
15
VDD2
9 VDD3
1
DRCN
14
PDWN
16
MUTEN
17
13
VDD4
12 OUTP
11 VSS2
10 OUTN
+
–
+
–
LEVEL
SHIFTER
PWM
Modulator
MUTE
POWER DOWN,
PROTECTION
BUFFER
LEVEL
SHIFTER
OSC
BIAS
VREF
BUFFER
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