Sony CX-LFA660 / CX-LFA770 / XR-FA660 / XR-FA770 Service Manual ▷ View online
22
22
CX-LFA660/LFA770
CX-LFA660/LFA770
7-1. BLOCK DIAGRAM — BD SECTION —
A
MAIN
SECTION
B
MAIN
SECTION
: CD
• Signal Path
CN201
MP3STB
MP3REQ
MIACK
MIACK
MICK
MIDIO
MILP
MICS
MP3RST
SRMSTB
SCOR
SENS
CLOCK
XLT
DATA
XRST
XTACN
SCOR
SENS
CLOCK
XLT
DATA
XRST
XTACN
LOUT
ROUT
DOUT
OPTICAL PICK-UP
BLOCK
(KSM-215DCP/C2NP)
LD
DRIVER
Q10
+1.7V
+3.3V
LD
GND
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
IC251
SW101
X171
16.9MHz
+3.3V
SL/SP MOTOR
DRIVER
IC101
RF AMP
16
7
15
17
18
VR
PD
19
20
21
22
5
9
3
24
MUTE
CH2OUT-F
CH1FIN
CH1RIN
CH2FIN
SFDR
OPIN+
CH2OUT-R
CH1OUT-R
CH1OUT-F
CH4OUT-F
CH4OUT-R
CH3OUT-R
CH3OUT-F
M
M
M101
(SPINDLE)
M102
(SLED)
VCC
VC
A
B
C
D
E
F
DETECTOR
A
B
E
19
F
20
LD
36
PD
37
TFDR
11
SSTP
7
FFDR
13
CH3FIN
30
MPD
6
95
XTACN
100
XRST
102
DATA
104
XLAT
105
CLOCK
86
AOUT2
81
AOUT1
71
DOUT
61
PCMD1
62
LRCK1
63
LRCK
65
PCMD
DIGITAL SIGNAL
IC301
PROCESSOR
21
40
SDO0
11
LRCKIA
16
SFSY/LRCK1B
19
SDIO
14
77 XTAO
78 XTAI
55
VDD
VDD
VDDM
26
27
C
28
D
29
107
SENS
XTACN
XRST
DATA
XLAT
CLOCK
SENS
113
GFS
114
C2PO
2
3
1
FOK
TRDR
12
10
SRDR
CH3RIN
29
CH2RIN
FRDR
14
XRST
100
66
BCK
60
BCK1
BCKIA
15
SBSY/BCK1B
18
6
3.3V
IC303
8
5
1
3
STANBY
36
PO11/BUCK/AD1
8
MIACK
7
MICK
6
MIDIO
4
MICS
5
MILP
2
RESET
41
SRMSTB
115
SCOR
SCOR
REG
23
23
CX-LFA660/LFA770
CX-LFA660/LFA770
— MAIN SECTION —
: TUNER
: CD
: AUX
: PB (TAPE)
: REC (TAPE)
R-CH
BIAS
OSC
Q450
Q451
Q451
+VM
ERASE
HEAD
REC/PB
HEAD
DECK
PB
SWITCH
TU-DO
76
TU-CLOCK
74
TU-CE
73
SYSTEM CONTROLLER
IC801
TU-DI
75
L
R
MD
J601
THR DET
J702
HEADPHONES
R-CH
R-CH
L
R
L
R
FUCTION
KEY
REMOTE
CONTROL
RECEIVER
IC802
S801-808
D802
STAND BY
TUNER UNIT
L-CH
R-CH
R-CH
TU-DO
TU-DI
TU-CL
TU-CE
TUNED
R-CH
TU TUNED
71
Q306
REC
SWITCH
Q301,302,305
T301
REC BIAS
Q452,453
Q454
MECHA BLOCK
SW1
PLAY
MOTOR
DRIVE
Q806,807
SOL
DRIVE
Q804,805
TA-R/P
79
TA-BIAS
80
TA-SW
24
81
XT1
12
XT2
13
X801
32.768kHz
X IN
15
X OUT
16
X802
10MHz
MUTE
Q121
86
O- MUTE
Q117,119
Q280-282
Q101,103,105
Q107,109
Q111,113,127
Q107,109
Q111,113,127
29
I-RMC
FUCTION
KEY
S809-815.S817,818
27
KEY0
87
STAND-BY LED
3
1
RESET
SWITCH
Q803
11
RESET
RESET
IC803
2
IC001
+3.3V
REG
REG
IC002
1
1
D808
23
I-POWER-DOWN
D251-254
RELAY
DRIVE
AC
IN
PT251
POWER
TRANSFORMER(SUB)
TRANSFORMER(SUB)
+3.3V
REG
Q020,021
Q008
RY251
20
KEY1
94
CD POWER
+10V
VCC
PB/REC EQ AMP
IC601
AUX L
19
18
OUT L
TU L
23
TAPE L
2
CD L
21
16
OUT R
R-CH
13
CONT
28
REC OUT
TU MUTE
77
RDS SIG
23
RDS DATA
25
TU STELEO
70
STEREO
TU-MUTE
FM SOUT
RDS DATA
RDS INT
RDS CLK
26
R-CH
R-CH
SW2
R REC
SW3
F REC
+SOL
SW4
PACK
SW5
PEND
M
M1
DECK
MOTOR
AOUT2
R-CH
AOUT1
FUNC-DATA
28
TA-PLAY SW
68
TA-MOTOR
78
TA-END SW
TA SOL
67
MOTOR DRIVE
IC501
OUT1
4
7
FIN
OUT2
2
9
RIN
OPEN
M
TRY
MOTOR
CLOSE
CD OPEN/CLOSE
65
66
I-SW-TROPN
I-SW-TRCLS
91 O-TRY-OPN
92 O-TRY-CLS
PRE
AMP
POWER
AMP
R-CH
J201
SPEAKER
45
47
50
.
52
60
.
SEG1
SEG16
31
42
G1
G12
43
FLUORESCENT
DISPLAY
FL801
FIL1
FIL2
-VFL
VOLUME
ENCODER
S616
22
VOL ENC
FAN
FAN
DRIVE
D807
+3.3V
REG
Q809
VDD1
DVDD
AVDD
MP3VD
VDD2
+3.9V
D806
18
I-POWER-MONITOR
Q290-293
VF
VF
D257
D256
D002
D001
PT252
+3.9V
REG
Q810-812
+VP
+VL
VL
-VL
-VH
-VH
-VH
+VH
+VH
-VP
+7V
REG
REG
Q006,011,012
-VFL
+3.9V
REG
Q009.010
VM
DC
DET
Q204,206
DET
Q201
DET
Q202
DC
DET
Q203,205
DC
DET
Q060-065
FL
REG
REG
Q001-003
CD-VCC
VCC
OVER
CURRENT
DET
Q123,250,251
85
POWER ON
L-CH
CN701
SCOR
XTCN
XRST
XL-T-CD
CD-DATA
SENS
CD-CLK
MP3-DO
MP3-DI
MP3-CLK
MP3-CS
MP3-ACK
MP3-REQ
MP3-RESET
MP3-STB
MP3-CP
C1
C2
C3
C4
C5
C6
C8
C7
C9
6
MP3-STB
2
MP3-RST
3
MP3-REC
1
5
MI-ACK
O-MI-LP
4
97
96
95
9
8
7
10
O-MI-CS
98 MI-DIO-O
100 MI
C16
C15
C14
C13
C11
C12
C9
C8
C10
99 MI-DIO-I
O-CD-CLK
O-CD-SENS
O-CD-XLT
O-CD-DATA
O-CD-XRST
O-CD-XTCN
I-CD-SCOR
C10
C11
C12
C13
C15
C14
C16
C7
C6
C4
C5
C2
C1
C3
3
• Signal Path
• R-CH is omitted due to same as L-CH.
POWER
TRANSFORMER(MAIN)
TRANSFORMER(MAIN)
B
BD SECTION
A
BD
SECTION
24
24
CX-LFA660/LFA770
CX-LFA660/LFA770
7-2. PRINTED WIRING BOARD — BD81A SECTION —
• Semiconductor
Location
Ref. No.
Location
IC101
D-7
IC251
C-6
IC301
C-7
IC303
B-7
Q10
E-4
•
See page 21 for Circuit Boards Location.
:Uses unleaded solder.
IC251
IC101
IC301
IC303
OPTICAL
PICK-UP
BLOCK
(KSM–215DCP)
MAIN
BOARD
CN604
(Page 26)
SPINDLE
MOTOR
SLED
MOTOR
(LIMIT)
4
5
1
1
64
16
17
32
33
48
49
3
1
2
A
B
C
D
E
3
4
5
6
7
8
9
E
12
12
1
9
10
18
19
27
28
36
12
12
TP
(VC)
TP
(TEO)
TP
(FEO)
TP
(RFACO)
TP
(RFDCO)
25
25
CX-LFA660/LFA770
CX-LFA660/LFA770
7-3. SCHEMATIC DIAGRAM — BD81A SECTION —
• Refer to page 36 for IC Pin Function Description.
•
See page 34, 35 for IC Block Diagrams.
•
See page 34 for Waveforms.
MAIN
BOARD
(1/2)
CN604
(Page 27)
TP165
TP166
TP178
TP14
4
TP
1
47
T
P15
3
TP186
TP187
TP167
T
P
160
T
P1
62
TP177
TP
145
TP
148
TP121
T
P
12
2
TP123
C305
JPO004
JPO10
TP
25
0
TP
301
301
TP302
TP303
TP304
TP103
TP104
TP105
T
P146
R161
R
16
3
R351
R352
R353
R354
R401
R402
R403
R404
R405
R406
R407
R408
R409
R411
R412
R419
R11
R
191
R
1
32
R251
R253
R12
R
1
42
R
143
R10
JPO102
JPO103
M101
S101
C15
C17
C115
C116
C1
22
C125
C132
C1
33
C134
C
141
C1
42
C143
C151
C161
C181
C194
C201
C203
C252
C255
C
257
C303
C306
C308
C309
C310
C311
C312
CN101
R
121
R171
C171
C313
C314
C183
C184
TP420
TP421
TP422
TP423
TP424
R252
TP
425
TP
426
C259
TP427
TP428
TP429
TP430
TP431
TP432
R13
Q10
C16
C123
C260
R172
C12
4
R
133
R313
TP433
TP436
C316
C10
C11
C162
C317
C315
C307
TP401
TP407
TP406
TP405
TP404
TP403
TP402
TP408
TP410
TP434
TP417
TP416
TP415
TP414
TP413
TP412
TP419
TP411
TP435
TP409
TP19
TP18
TP17
TP16
TP15
TP102
TP14
TP13
TP12
TP11
TP10
C195
C182
C174
R
131
C
131
C18
R301
FB301
R303
R182
R181
X171
C172
R173
R203
IC303
R302
R162
R
16
5
C211
C210
C212
R
15
1
R205
R410
C320
C213
CN201
C185
C186
C163
C
196
C318
R
306
IC251
C258
C251
C302
M102
TP
25
3
TP25
2
TP
251
C111
R112
R114
R111
R113
C112
C113
C114
R193
C
2
09
R305
IC301
R
1
41
IC101
R307
TP125
TP
1
24
TP
14
2
T
P1
49
R204
R201
MIRR
DFCT
FOK
XU
GF
XP
C
K
G
FS
MVDD
MGND
LOCK
W
D
CK
C
O
U
T
VC
W
FCK
SB
S
O
R
FD
C
O
220
4V
MDP
APC
S
P
-
LRCK
PCMD
BCK
C
2P
O
100
10
0
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
0
0
1
0k
10k
10k
100k
1
k
3.3
k
3.3
FEI
TEI
SW
0.1
F
C14
0.1
0.1
F
220
4V
0.1
F
100
10V
10V
0.1
B
0.1
F
0.4
7
B
0.0
1
B
0.1
F
0.1
B
0
.0015
B
0.1
F
100
10V
10V
0.1
F
0.1
F
0.1
F
100
10V
10V
100
10V
10V
0.1
F
0.1
F
0.1
F
0.1
F
0.1
F
47
4V
4V
0.1
F
0.1
F
0.1
F
0.1
F
16P
15k
0.1
F
47 4V
22 6.3V
22 6.3V
AGND
DGND
MP3GND
IOP1
IOP2
22k
S
W
+
S
W
-
PCMDI
FRDR
FFDR
TRDR
TFDR
MDP
1
2SB1690K
1
F
F
0.1
B
220 10V
3
30p
C
H
1
80k
220
MP3VDD
AVDD
0.0022
B
10
6.3
B
10
6.3
B
0.1
F
0.01
B
0.1
B
0.1
F
MP3STB
MICS
MILP
MIDIO
MICK
MIACK
MP3REQ
MP3RST
ROUT
AVDD
SCOR
SENS
CLK
XLT
DATA
XRST
XTCN
LOUT
DVDD
DOUT
F-
T-
F-
F+
PD
F
C
B
A
D
E
0.1
F
0.1
F
0.1
F
1M
100p
CH
0.001
B
100k
100k
100
100
0
0
BH15FB1W
10k
47k
220p
CH
0.1
B
22p CH
0
0
100
0
22p CH
470p
CH
470p CH
0.1
0.1
0.01
B
0
0.0068
B
0.1
F
SL-
SL+
SP
+
0.0033
B
15k
15k
1k
1k
470p
0.0033
470p
B
NM
0
.01
B
100k
TC94A34FG-002
4
.7k
CXD3059AR
10k
R
FAC
I
R
FA
C
O
EX
CK
0
0
470
22p CH
0.1
F
1M
16.9MHz
27p CH
0
27P
BA5947FM
(HSOP28)
(HSOP28)
0.1
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