Sony CX-LFA660 / CX-LFA770 / XR-FA660 / XR-FA770 Service Manual ▷ View online
38
CX-LFA660/LFA770
Pin No.
Pin Name
I/O
Description
94
IOVSS0
—
I/O digital ground
95
XTACN
I
Oscillation circuit control
Self-oscillation when high, oscillation stop when low
96
SQSO
O
Subcode Q 80-bit and PCM peak and level data output
CD TEXT data output
97
SQCK
I
SQSO readout clock input
98
SBSO
O
Subcode P to W serial output
99
EXCK
I
SBSO readout clock input
100
XRST
I
System reset Reset when low
101
SYSM
I
Mute input Muted when high
102
D ATA
I
Serial data input from CPU
103
VSS
—
Internal digital ground
104
XLAT
I
Latch input from CPU The serial data is latched at the falling edge
105
CLOCK
I
Serial data transfer clock input from CPU
106
VDD
—
Internal digital power supply
107
SENS
O
SENS output to CPU
108
SCLK
I
SENS serial data readout clock input
109
ATSK
I/O
Anti-shock input/output (Not used)
110
WFCK
O
WFCK output (Not used)
111
XUGF
O
XUGF output (Not used)
112
XPCK
O
XPCK output (Not used)
113
GFS
O
GFS output (Not used)
114
C2PO
O
C2PO output (Not used)
115
SCOR
O
High output when the subcode sync, S0 or S1, is detected
116
VDD
—
Internal digital power supply
117
C4M
O
4 2336MHz output (Not used)
118
WDCK
O
Word clock output f = 2Fs (Not used)
119
COUT
I/O
Track number count signal input/output (Not used)
120
NC
—
Not used
39
CX-LFA660/LFA770
• FRONT BOARD IC801 LC876980B-53L3-E (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
MI-ACK
I
MIACK signal input to the CD unit
2
MP3-RST
O
Reset signal output to the CD unit
3
MP3-REQ
I
Request signal input to the CD unit
4
O-MI-CS
O
MICS signal output to the CD unit
5
O-MI-LP
O
MILP signal output to the CD unit
6
O-MP3-STB
O
Standby signal output to the CD unit
7
O-CD-XTCN
O
XTCN signal output
8
O-CD-XRST
O
System reset signal output
9
O-CD-XLT
O
Latch signal output to the CD unit
10
O-CD-SCOR
I
SCOR (SUBQ request) signal output to the CD unit
11
RESET
I
Reset terminal
12
32.768kHz
I
Input for 32.768kHz crystal oscillation
13
32.768kHz
O
Output for 32.768kHz crystal oscillation
14
GND
—
Ground terminal
15
10MHz
I
Input terminal for ceramic oscillator (10MHz)
16
10MHz-EXTAL
O
Output terminal for ceramic oscillator (10MHz)
17
VDD1
—
Power supply terminal
18
I-POWER-MONITOR
I
Power Voltage and Protect Detect
19
MODEL DETECT
I
Model detect
20
I-KEY1
I
Key AD input 1
21
AREA
I
AREA signal input
22
VOL.ENC
I
Encoder signal input from the volume encoder
23
I-POWER-DOWN
I
Power down signal input
24
TA-SW
I
Tape switch status signal input from the tape deck
25
RDS-DATA
I
RDS data input from the tuner
26
RDS-CLK
I
RDS clock input from the tuner
27
I-KEY0
I
Key AD input 0
28
FUNC-DATA
O
Function coutrol signal output
29
I-RMC
I
Remote sensor signal input
30
NC/VREF
—
Not used
31 to 42
G1 to G12
O
Grid signal output to the fluorescent indicator tube
43 to 45
SEG1 to SEG3
O
Segment signal output to the fluorescent indicator tube
46
VDD3
—
Power supply terminal
47 to 50
SEG4 to SEG7
O
Segment signal output to the fluorescent indicator tube
51
FL-29V
—
VFD Power supply (-)
52 to 60
SEG8 to SEG16
O
Segment signal output to the fluorescent indicator tube
61
NC
—
Not used
62
NC
—
Not used
63
NC
—
Not used
64
NC
—
Connected ground
65
I-SW-TROPN
I
CD tray close detect
66
I-SW-TRCLS
I
CD tray open detect
67
TA- END SW
I
Tape deck reel switch signal input
68
TA-PLAY SW
I
Play switch signal input from the tape deck
69
NC
—
Connected ground
70
TU-STEREO
I
Tuner stereo signal input
71
TU-TUNED
I
Tuner tuning signal input
40
CX-LFA660/LFA770
Pin No.
Pin Name
I/O
Description
72
VDD4
—
Power supply terminal
73
TU-CE
O
Tuner chip enable signal output to the tuner
74
TU-CLOCK
O
Tuner clock signal output
75
TU-DI
I
Tuner data input
76
TU- DO
O
Tuner data output
77
TU-MUTE
O
Muting signal output to the tuner
78
TA-MOTOR
O
Motor control signal output to the tape deck
79
TA-R/P
O
REC/PLAY coutrol signal output to the REC/PLAY switch circuit
80
TA-BIAS
O
Bias control signal output to the bias oscillation circuit
81
TA- SOL
O
Solenoid control signal output to the tape deck
82
AMP ST-BY
—
Not used
83
AMP MUTE
—
Not used
84
NC
—
Not used
85
POWER ON
O
Power relay control signal output
86
O-MUTE
O
Muting control signal output to the power amplifier
87
STD-BY LED
O
Standby LED control signal output
88
NC/DSGX/I-BASS LED
—
Not used
89
GND
—
Ground terminal
90
VDD2
—
Power supply terminal
91
O-TRY-OPN
O
CD tray open control signal output
92
O-TRY-CLS
O
CD tray close control signal output
93
O-TA-LED
—
Not used
94
CD POWER
O
CD power control signal output
95
O-CD-DATA
O
Data output to the CD unit
96
I-CD-SENS
I
SENS signal input from the CD unit
97
O-CD-CLK
O
Clock output to the CD unit
98
MI-DIO-O
O
MIDIO signal output to the CD unit
99
MI-DIO-I
I
MIDIO signal input to the CD unit
100
MI-CK
O
MICK signal output to the CD unit
41
CX-LFA660/LFA770
SECTION 8
EXPLODED VIEWS
NOTE:
•
-XX and -X mean standardized parts, so they
may have some difference from the original
one.
may have some difference from the original
one.
•
Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•
The mechanical parts with no reference
number in the exploded views are not supplied.
number in the exploded views are not supplied.
•
Abbreviation
AUS
AUS
: Australian model
Ref. No.
Part No.
Description
Remark
8-1.
OVERALL SECTION
The components identified by mark 0 or
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
dotted line with mark 0 are critical for safety.
Replace only with part number specified.
7
6
not
supplied
supplied
a
b
2
3
#3
#2
#4
#2
#3
#3
#3
#3
#3
#3
a
front panel section
CD mechanism deck section
(CDM77B-F1BD81A)
(CDM77B-F1BD81A)
chassis section
not
supplied
supplied
not
supplied
supplied
not
supplied
supplied
#4
#1
#1
#1
4
4
5
1
b
Ref. No.
Part No.
Description
Remark
1
2-059-826-01 PANEL (DVD)
2
2-024-357-11 COVER TOP (660)
2
2-024-357-21 COVER TOP (770)
3
4-951-620-11 SCREW (2.6X10), +BVTP
4
3-970-608-11 SUMITITE (B3), +BV
5
1-787-194-11 FAN, DC
6
1-827-731-11 WIRE (FLAT TYPE) (11 CORE) (AUS)
6
1-828-984-11 WIRE (FLAT TYPE) (15 CORE) (EXCEPT AUS)
7
1-693-626-11 TUNER (FM/AM) (EXCEPT AUS)
7
1-693-628-21 TUNER (FM/AM) (AUS)
#1
7-685-246-19 SCREW +KTP 3X8 TYPE2 NON-SLIT
#2
7-685-647-14 SCREW +BVTP 3X10 TYPE2 N-S
#3
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
#4
7-685-647-79 SCREW +BVTP 3X10 TYPE2 IT-3
Ver. 1.1
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