Sony CX-LFAV500 / XR-FAV500 Service Manual ▷ View online
41
CX-LFAV500
7-19. IC PIN FUNCTION DESCRIPTION
IC601 LC876756C-52C1-E System Controller (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 66
67, 68
69 to 71
72
73
74
75
76
77
78
79
80
81
82
83
I/O
—
—
—
O
I
O
O
O
O
O
I
I
O
—
I
O
—
I
I
I
I
I
I
I
I
I
—
I
I
—
O
O
—
O
—
O
—
I
—
O
O
O
O
O
—
I
O
O
O
—
Pin Name
NC
NC
NC
T-SOL
T-END
T-MTR.CONT
O-SHIFT
P-CON
P AMP-MUTE
F-DATA
I-RESET
XT1
XT2
GND.
XIN
XOUT
VDD1
I-KEY1
I-KEY2
BASS ENC INPUT
TREBLE ENC INPUT
VOL-ENC
I-MIC
T-SW
HOLD
I-SH DET
NC
CD-DOOR-SW
RMC-IN
NC
O-GRID1 to 11
O-SEG1
VDD3
O-SEG2 to 5
GND.
O-SEG6 to 20
NC
I-INI-1 to 3
VDD4
O-CLOSE
O-OPEN
LED-CONT
O-DSG
T-REC
I-INI.BASS+2
T-PLAY.SW
R-MUTE
O-BIAS
CD-ON
NC
Description
Not used (open)
Not used (open)
Not used (open)
Solenoid control signal output to the tape deck
Tape deck reel switch signal input
Motor control signal output to the tape deck
Clock shift control signal output
Power relay control signal output
Muting control signal output to the power amplifier
Control signal output to the sound processor
Reset signal input from the reset IC (IC603)
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
Key AD input 2
Encoder signal input from the bass encoder
Encoder signal input from the treble encoder
Encoder signal input from the volume encoder
Microphone signal detection signal input
Tape switch status signal input from the tape deck (SW2 to 4)
HOLD detection signal input
DC detection and short circuit detection signal input from the power amplifier
Not used (open)
CD door open/close switch signal input
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
Ground terminal
Segment signal output to the fluorescent indicator tube
Not used (open)
Initial selection signal input
Power supply terminal
CD tray close control signal output
CD tray open control signal output
Standby LED control signal output
Not used (open)
REC/PLAY control signal output to the REC/PLAY switch circuit
Not used (fixed at “L”)
Play switch signal input from the tape deck
Muting signal output to the tuner
Bias control signal output to the bias oscillation circuit
CD power supply control signal output
Not used (open)
42
CX-LFAV500
Pin No.
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
O
O
O
O
O
—
—
—
I
I
I
I
O
O
O
I
O
Pin Name
R-CE
O-VF-ON
E-XLT
E-DATA
E-SQCK
VSS2
VDD2
NC
R-ST
R-TUNED
I-CDACK
I-CDDATA
O-CD DATA
O-CDSTB
R-DATA
R-COUNT
R-CLK
Description
Tuner chip enable signal output to the tuner
Vocal fader on/off control signal output
Latch signal output to the echo processor (IC502)
Data output to the echo processor (IC502)
Clock output to the echo processor (IC502)
Ground terminal
Power supply terminal
Not used (open)
Stereo/mono detection signal input from the tuner
Tuner tuned status signal input
Acknowledge signal input from the video CD circuit
Data input from the video CD circuit
Data output to the video CD circuit
Strobe signal output to the video CD circuit
Data output to the tuner
IF count signal input from the tuner
Clock signal output to the tuner
SECTION 8
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.
•
Abbreviation
MY
MY
: Malaysia model
SP
: Singapore model
TH
: Thai model
The components identified by mark
0
or
dotted line with mark
0
are critical for safety.
Replace only with part number specified.
43
CX-LFAV500
1
4-245-218-11 LID,CD
2
4-247-756-01 CABINET, TOP
3
1-693-620-11 TUNER (FM/AM)
5
1-400-285-11 F-BEAD, E2515MRT
6
1-828-004-11 WIRE (FLAT TYPE) (23 CORE)
7
1-763-697-21 DC FAN
8
A-4734-927-A VCD BOARD, COMPLETE
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
9
A-4747-885-A V-OUT BOARD, COMPLETE
10
A-4747-883-A MIC/ECHO BOARD, COMPLETE
#1
7-685-248-14 SCREW +KTP 3X12 TYPE2 NON-SLIT
#2
7-685-647-11 SCREW +BVTP 3X10 TYPE2 N-S
#3
7-685-647-14 SCREW +BVTP 3X10 TYPE2 N-S
#5
3-229-336-01 SCREW, +BVWH TAPPING
8-1. OVERALL SECTION
not
supplied
supplied
not
supplied
supplied
not
supplied
supplied
front panel assy
chassis assy
a
a
c
c
b
b
1
3
10
8
5
2
#1
#3
#3
#3
#3
#3
#3
#2
#1
#1
6
9
7
#2
#2
#2
#2
#2
#2
#2
#2
#2
#5
CD mechanism
deck section
deck section
not
supplied
not
supplied
not
supplied
not
supplied
44
CX-LFAV500
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
4-245-227-01 WINDOW,DISPLAY
52
4-238-631-01 TAPE SPRING
53
4-247-757-01 SPR-T,CASS
54
4-245-233-01 KNOB VOL
55
4-245-223-01 KNOB,B/T
56
4-245-226-01 PANEL,L
57
4-245-221-01 BUTTON,REC
58
4-245-217-21 PANEL, FRONT
59
4-245-220-01 BUTTON,POWER
60
A-4747-866-A FRONT BOARD, COMPLETE (SP,MY)
60
A-4750-067-A FRONT BOARD, COMPLETE (TH)
61
4-245-219-01 BUTTON,FUNCTION
62
4-245-222-01 BUTTON,CD
63
4-231-841-01 SPRING (HEART CAM-B)
64
4-242-318-01 OIL-DMPR, 70
65
1-796-351-51 MECHANISM, SINGLE CASSETTE
66
4-245-225-01 PANEL,R
67
4-247-752-01 RUBBER, FOOT
68
A-4737-496-A HOLDER CASSETTE ASSY (X)
71
4-231-825-01 CAM (B), HEART
72
4-247-820-01 FILTER, FL
73
A-4747-888-A HP/MIC JACK BOARD, COMPLETE
74
4-245-229-01 HOLDER,LED
#2
7-685-647-11 SCREW +BVTP 3X10 TYPE2 N-S
#5
3-229-336-01 SCREW, +BVWH TAPPING
8-2. FRONT SECTION
Ver 1.1
53
54
52
67
63
61
71
62
55
60
65
66
64
57
56
51
58
73
72
59
74
#2
#5
#2
a
a
not
supplied
supplied
not
supplied
supplied
not
supplied
supplied
not
supplied
supplied
not
supplied
supplied
68
Click on the first or last page to see other CX-LFAV500 / XR-FAV500 service manuals if exist.