Sony CX-LEM220 Service Manual ▷ View online
30
CX-LEM220
• IC Pin Function Description
• CONTROL BOARD IC801 LC876964C-53L2-E (SYSTEM CONTROLLER)
• CONTROL BOARD IC801 LC876964C-53L2-E (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
MI-ACK
—
Not used
2
MP3-RST
—
Not used
3
MP3-REQ
—
Not used
4
MI-CS
—
Not used
5
MI-LP
—
Not used
6
MP3-STB
—
Not used
7
XTCN or CD POWER
O
Oscillation circuit control signal output to the CD DSP
“H”: auto oscillation, “L”: oscillation off
8
X-RST
O
Reset signal output to the CD DSP
9
XLT
O
Serial data latch pulse output to the CD DSP
10
SCOR
I
Subcode sync (S0+S1) detection signal input from the CD DSP
11
RESET
I
Reset signal input from the reset switch “L”: reset For several hundreds msec.
after the power supply rises, “L” is input, then it changes to “H”
12
I-XT1
I
Sub system clock input terminal (32.768 kHz)
13
O-XT2
O
Sub system clock output terminal (32.768 kHz)
14
VSS1
—
Ground terminal
15
XIN
I
Main system clock input terminal (10 MHz)
16
XOUT
O
Main system clock output terminal (10 MHz)
17
VDD1
—
Power supply terminal (+3.2V)
18
I-POWER_MONITOR
I
Power monitor input terminal
19
MODEL DETECT
I
Model destination setting terminal
20
KEY1
I
Front panel key input terminal (A/D input)
21
AREA
I
Model destination setting terminal
22
VOL_ENCODER
I
Dial pulse input of the rotary encoder (for VOLUME control)
23
I_POWER_DOWN
I
Power down detection signal input terminal “L”: power down, normally : “H”
24
TA-SW
I
Cassette in/out detect switch signal input from the tape mechanism deck
“L”: cassette in
25
RDS-DATA
I
RDS serial data input from the FM/AM tuner unit
26
RDS-CLK
I
RDS serial data transfer clock signal input from the FM/AM tuner unit
27
KEY0
I
Front panel key input terminal (A/D input)
28
F-DATA
O
Serial data output to the electrical volume
29
RMC_IN
I
Remote control signal input from the remote control receiver
30
NC VREF
—
Not used
31 to 42
G1 to G12
O
Grid drive signal output to the fluorescent indicator tube
43 to 45
S1 to S3
O
Segment drive signal output to the fluorescent indicator tube
46
VDD3
—
Power supply terminal (+3.1V)
47 to 50
S4 to S7
O
Segment drive signal output to the fluorescent indicator tube
51
VP
—
Power supply terminal (–29V)
52 to 60
S8 to S16
O
Segment drive signal output to the fluorescent indicator tube
61 to 65
NC
—
Not used
66
CD OPEN
I
CD lid open/close detection switch input terminal
67
TA END SW
I
END switch signal input from the tape mechanism deck
68
TA PLAY SW
I
PLAY switch signal input from the tape mechanism deck
69
NC
—
Not used
70
TU STEREO
I
FM stereo detection signal input from the FM/AM tuner unit
71
TU TUNED
I
Tuning detection signal input from the FM/AM tuner unit
72
VDD4
—
Power supply terminal (+3.1V)
31
CX-LEM220
Pin No.
Pin Name
I/O
Description
73
TU CE
O
Chip enable signal output to the FM/AM tuner unit
74
TU CLOCK
O
Serial data transfer clock signal output to the FM/AM tuner unit
75
TU DI
I
Serial data input from the FM/AM tuner unit
76
TU DO
O
Serial data output to the FM/AM tuner unit
77
TU MUTE
O
Tuner muting on/off control signal output to the FM/AM tuner unit
78
TA MO
O
Capstan/reel motor on/off control signal output terminal “H”: motor on
79
TA RP
O
Recording/playback selection signal output terminal
“H”: playback mode, “L”: recording mode
80
TA BIAS
O
Recording bias on/off selection signal output terminal “H”: bias on, “L”: bias off
81
TA SOL
O
Trigger plunger on/off control signal output terminal “H”: plunger on
82
AMP-STBY
O
Standby control signal output to the power amplifier
83
AMP MUTE
O
Tuner muting on/off control signal output to the power amplifier
84
AU MUTE
O
Line muting on/off control signal output terminal
85
POWER ON
O
Power relay drive signal output terminal “H”: on
86
NC
—
Not used
87
ST-BY LED
O
LED drive signal output terminal
88
DSG/I-BASS LED
O
LED drive signal output terminal
89
VSS2
—
Ground terminal
90
VDD2
—
Power supply terminal (+3.1V)
91
CD LED
—
Not used
92
TU LED
—
Not used
93
TA LED
—
Not used
94
CD ON
O
Power on/off control signal output for the CD mechanism section
95
CD DATA
O
Serial data output to the CD DSP
96
SENS
I
Internal status (SENSE) signal input from the CD DSP
97
CD-CLK
O
Serial data transfer clock signal output to the CD DSP
98
MI-DIO-O
O
Serial data output to the MP3 decoder
99
MI-DIO-I
—
Not used
100
MI-CK
O
Serial data transfer clock signal output to the MP3 decoder
32
CX-LEM220
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.
Ref. No.
Part No.
Description
Remark
2
A-1076-116-A AMP BOARD, COMPLETE
3
A-1076-112-A MAIN BOARD, COMPLETE
4
3-703-244-00 BUSHING (2104), CORD (AEP)
0 5
1-769-744-52 CORD, POWER
6
1-693-629-11 TUNER (FM/AM)
7
4-247-752-01 FOOT, RUBBER
8
4-253-221-41 CABINET, REAR (UK)
8
4-253-221-71 CABINET, REAR (NO FAN) (AEP)
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.
9
1-469-636-11 CORE, FERRITE (ESD-R-25SD)
10
1-400-285-11 F-BEAD, E2515MRT
0 T902
1-443-390-11 TRANSFORMER, POWER
#1
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
#2
7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
#3
7-685-647-14 SCREW +BVTP 3X10 TYPE2 N-S
#4
7-685-649-79 SCREW +BVTP 3X14 TYPE2 N-S
#5
7-685-661-14 SCREW +BVTP 4X12 TYPE2 IT-3
Ref. No.
Part No.
Description
Remark
2
4
10
7
8
not supplied
not supplied
T902
not supplied
not supplied
top panel assy
front panel assy-1
#1
#1
#1
#5
#2
#2
#2
#3
#3
#3
#2
#4
#1
#1
3
6
5
a
9
33
CX-LEM220
Ref. No.
Part No.
Description
Remark
54
A-1059-326-A CONTROL BOARD, COMPLETE
#1
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
8-2.
FRONT PANEL ASSY-1
not supplied
(HP board)
(HP board)
front panel assy-2
not supplied
not supplied
not supplied
not supplied
not supplied
not supplied
not supplied
54
#1
#1
#1
#1
#1
not supplied
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