Sony CX-LFA700 / XR-FA700 Service Manual ▷ View online
37
CX-LFA700
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
I/O
I
–
O
I/O
–
I
I
I
O
I
–
O
O
–
–
–
–
–
–
I
I
I
O
I
O
I
I
I
I
I
Description
Ground terminal for analog circuit (for output parts of DSL, PLL, DA and for AD)
Not used (open)
DSL balance output
Loop filter terminal for VCO which creates digital servo 33.8688MHz
Not used (open)
Clock output for sub-code serial output. Clock input for reading TEXT data at CD-TEXT 1 mode.
(connected to the ground)
Ground terminal for oscillation circuit
Oscillation circuit input terminal
Oscillation circuit output terminal
Power supply termimal for oscillation circuit
Not used (open)
Output L at CD 4 x speed (not used (open))
Gain control output. RW mode at “H”.
Not used (open)
Not used (open)
Not used (open)
Not used (open)
Not used (open)
Not used (open)
Switching mode signal (fixed at “H”)
Test terminal. Normal at “H”. (fixed at “H”)
Power supply terminal for analog circuit. (For audio output part (for combinating Lch and Rch)
Lch audio output
Ground terminal for analog circuit (for audio output part (for combinating Lch and Rch)
Rch audio output
Switch signal input for detecting inside limit
Ocillation frequency specificed terminal. Ocillation frequency is 16.9344MHz at “L”.
Test terminal when “H” is IOSEL. (Normally at “L”)
SMCK terminal output when “H” is IOSEL. Switching frequency terminal. SMCK= 4.2336MHz at “L”.
SUBQ terminal output when “H” is IOSEL. Switching mode terminal. Using mode of Q-code buffer at “H”.
Pin Name
AVSS2
EFM
DSLB
VCOF2
SUBC
SBCK
XVSS
XI
XO
XVDD
BYTCK
CD-X4
GCTL
IPFLAG
FLAG
CLVS
CRC
DEMPH
RESY
IOSEL
TEST
AVDD1
OUT-L
AVSS1
OUT-R
IL-SW
CSEL
PSEL
MSEL
SSEL
38
CX-LFA700
IC101 LC876764C-51E3 System Control (FRONT Board)
Pin No.
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 to 33
34 to 44
45
46
47 to 50
51
52 to 67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
I/O
O
O
O
O
O
I
I
O
O
O
I
I
O
—
I
O
—
I
I
I
I
I
I
I
I
I
I
I
I
—
O
O
—
O
—
O
—
I
I
I
—
—
O
O
O
—
O
I
I
O
Pin Name
O-BIAS
O-POWER
O-REC/PB
O-MAIN MUTE
O-FUNC CONT
I-CAM TP
I-ASO TP
O-PL TP
O-MOT TP
O-CLK SHIFT
I-RESET
XT1
XT2
VSS1
CF1
CF2
VDD1
I-KEY1
I-MS
I-HOLD
I-POWER
I-ENC VOL
I-ENC JOG
I-KEY2
I-REC-SW TP
I-CD BCLK
I-RDS SIGNAL
I-RDS CLK
I-RMC
NC
O-GRID1 to 11
O-SEG1
VDD3
O-SEG2 to 5
FIX0
O-SEG6 to 21
NC
I-SEL AUX1
I-SEL AUX2
I-SEL BASS
VDD4
NC
O-DEMO01
O-OPT SW
O-DEMO02
NC
O-STBY LED
I-CLOSE SW
I-OPEN SW
O-CLS CDT
Description
Tape bias control signal output to the bias oscillation circuit
System power on/off control signal output
REC/PLAY control signal output to the REC/PLAY switch circuit
Audio muting control signal output
Function IC control signal output
Tape head position signal input
Tape count pulse input
Tape solenoid control signal output
Tape motor control signal output
Main clock shift control signal output
Reset signal input from the reset IC (IC103)
Resonator terminal (32.768kHz)
Resonator terminal (32.768kHz)
Ground terminal
Resonator terminal (8.64MHz)
Resonator terminal (8.64MHz)
Power supply terminal
Key AD input 1
MS signal input
Power detection signal input from the power amplifier
AC detection signal input
Encoder signal input from the volume encoder
Encoder signal input from the multi jog
Key AD input 2
Tape REC switch signal input
CD sub code clock input
RDS signal level input from the tuner
RDS clock input from the tuner
Remote sensor signal input
Not used (open)
Grid signal output to the fluorescent indicator tube
Segment signal output to the fluorescent indicator tube
Power supply terminal
Segment signal output to the fluorescent indicator tube
Power supply terminal (negative)
Segment signal output to the fluorescent indicator tube
Not used (open)
Initial selection signal input (AUX1)
Initial selection signal input (AUX2)
Initial selection signal input (BASS)
Power supply terminal
Not used (open)
Demo signal output to the VU meter driver
Optical output power control signal output
Demo signal output to the VU meter driver
Not used (open)
Standby LED control signal output
CD tray close switch detection signal input
CD tray open switch detection signal input
CD tray close control signal output
39
CX-LFA700
Pin No.
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
O
I
I
O
O
O
O
—
—
O
O
O
O
O
O
I
O
I
O
Pin Name
O-OPN CDT
I-RDS DATA
I-CD-SENSE
O-CD-RESET
O-CD-MLD
O-MTR MUTE
O-VOL LED
VSS2
VDD2
O-DIMMER
O-LED1 (BLUE)
O-LED2 (RED)
O-PLL CLK
O-PLL DI
O-PLL CE
I-PLL DO
O-CD-MDATA
I-CD STAT
O-CD-MCLK
Description
CD tray open control signal output
RDS data input from the tuner
CD SENSE signal input from the DSP
Reset signal output to the DSP
CD command latch signal output to the DSP
Level meter muting signal output
Volume LED control signal output
Ground terminal
Power supply terminal
Dimmer control signal output to the meter back light
Back light control signal output
Back light control signal output
PLL clock output to the tuner
PLL data output to the tuner
PLL chip enable signal output to the tuner
PLL data input from the tuner
CD command data output to the DSP
CD status signal input from the DSP
CD command clock output to the DSP
SECTION 7
EXPLODED VIEWS
NOTE:
•
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences 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.
in the exploded views are not supplied.
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.
40
CX-LFA700
1
A-4733-977-A MAIN BOARD COMPLETE
2
4-247-037-01 PANEL (L), SIDE
3
4-247-038-01 PANEL (R), SIDE
4
4-247-036-01 PANEL, TOP
5
4-247-048-01 HOLDER, CASSETTE
6
4-247-083-01 SPRING (CASS), TORSION
7
1-693-634-11 TUNER
8
1-769-940-11 WIRE (FLAT TYPE) (11 CORE)
9
4-242-171-01 DAMPER 150 N
10
4-242-172-01 PLATE, LOCK
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
11
4-242-173-01 SPR-C, LOCK
12
4-242-174-01 HLDR, LOCK 1
13
A-4733-973-A AMP BOARD COMPLETE
14
1-796-711-11 DECK, MECHANICAL (TAPE)
15
4-242-539-01 BVIT3B+3-8R W/O SLOT
16
A-4733-982-A D-OUT BOARD COMPLETE
17
4-242-091-01 CUSHION
#1
4-242-531-01 QT2+3-10 W/O SLOT
#3
7-685-646-79 SCREW +BVTP
3X8 TYPE2 IT-3
#4
7-685-647-79 SCREW +BVTP
3X10 TYPE2 IT-3
7-1. Overall Section
6
1
not
supplied
not
supplied
not
supplied
a
a
b
b
2
4
5
7
#1
#1
#4
#4
#4
#4
#3
#3
#3
#3
#3
#4
#4
#4
#4
#4
#4
#4
#4
#4
#4
8
9
10
11
12
13
14
16
3
17
15
15
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