Sony CX-LFA600 / XR-FA600 Service Manual ▷ View online
33
CX-LFA600
REC-O_L
REC-O_R
TUNER-R
TUNER-L
CD-L
A
UX-L
OUT
-L
OUT
-R
T
ON_L-L
T
ON_L-R
A
UX-R
CD-R
VSS
T
ON_H-R
T
ON_H-L
T
APE-L
T
APE-R
IC101
BD3881FV
– MAIN Board –
IC102
STK403-040
PRE DRIVER
IC CH1
1
2
3
4
5
6
7
8
9
10
11
12
PRE DRIVER
IC CH2
BIAS CIRCUIT
–VCC (–VP)
+VCC (+VP)
CH1 OUT
CH2 OUT
+PRE
SUB
GND
CH1 IN
CH1 NF
ST BY
CH2 NF
CH2 IN
C4
C2
C1
C3
TR4
TR6
TR3
TR2
TR5
TR1
R5
R6
R1
R2
R3
R4
R7
R8
SUB
34
CX-LFA600
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
IC603
TC74HCT245AF (EL)
– FRONT Board –
IC103
BH2220FVM-TR
R-2R
DAC
8bit REG
+
DEC
R-2R
DAC
8bit REG
+
DEC
SERIAL
INTERFACE
R-2R
DAC
8bit REG
+
DEC
POWER ON
RESET
1
AO1
2
AO2
7
CLK
3
AO3
4
VCC
8
LD
6
DI
5
GND
IC605
BA6956AN
1
DIR
2
A1
18
B1
3
A2
17
B2
4
A3
16
B3
5
A4
15
B4
6
A5
14
B5
7
A6
13
B6
8
A7
12
B7
9
A8
10
GND
11
B8
19
G
20
VCC
35
CX-LFA600
7-13. IC PIN FUNCTION DESCRIPTION
IC601
LC876780B-52C4-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
I/O
O
O
I
O
I
O
O
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
—
O
O
I
O
O
O
I
O
I
O
Pin Name
LD
MILP
SCOR
TSOL
TEND
LED
SHIFT
PCON
AMUT
FCNT
RESET
XT1
XT2
GND
XIN
XOUT
VDD1
KEY1
KEY2
BASI
TREI
VOLI
RDSIG
T-SW
HOLD
SHDET
RDCK
OPCL
RMC
NC
G1 to G11
S1
VDD3
S2 to S5
GND
S6 to S20
BASS+2
MIACK
I-INI.1 to 3
VDD4
BUCK
BUDO
TUDI
MICS
TREC
MP3RST
HDPN
XCE
RDDAT
RMUT
Description
Serial data load signal output to the D/A converter (IC103)
Latch pulse output to the MP3 decoder (IC104)
SCOR (SUBQ request) signal input from the DSP (IC101)
Solenoid control signal output to the tape deck
Tape deck reel switch signal input
Standby LED control signal output
Clock shift control signal output
Main power 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 (IC604)
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
RDS signal level input from the tuner (not used (open))
Tape switch status signal input from the tape deck (SW2 to 4)
System hold detection signal input
DC detection and short circuit detection signal input
RDS clock input from the tuner
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 (fixed at “L”)
Acknowledge signal input from the MP3 decoder (IC104)
Initial selection signal input
Power supply terminal
Serial clock output to the tuner, the shift register (IC602) and the D/A converter (IC103)
Serial data output to the tuner, the shift register (IC602) and the D/A converter (IC103)
Serial data input from the tuner
Chip select signal output to the MP3 decoder (IC104)
REC/PLAY control signal output to the REC/PLAY switch circuit
Reset signal output to the MP3 decoder (IC104)
Play switch signal input from the tape deck
Chip enable signal output to the shift register (IC602)
RDS data input from the tuner
Muting signal output to the tuner
36
CX-LFA600
Pin No.
83
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
I
O
Pin Name
NC
TUCE
XRST
XLT
XDAT
SQCK
VSS2
VDD2
SUBQ
TUST
TUNED
SENS
RFSW
MICK
CLK
MP3REQ
MIDIO1
MIDIO2
Description
Not used (open)
Tuner chip enable signal output to the tuner
Reset signal output to the DSP (IC101) and the motor/coil driver (IC102)
Latch signal output to the DSP (IC101)
Data output to the DSP (IC101)
SUBQ clock output to the DSP (IC101)
Ground terminal
Power supply terminal
SUB-Q data input from the DSP (IC101)
Stereo/mono detection signal input from the tuner
Tuner tuned status signal input
SENS signal input from the DSP (IC101)
LD ON signal output to the RF amplifier (IC103)
Clock output to the MP3 decoder (IC104)
Clock output to the DSP (IC101)
Request signal input from the MP3 decoder (IC104)
Data input from the MP3 decoder (IC104)
Data output to the MP3 decoder (IC104)
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