Sony CX-JN44 / JAX-S44 Service Manual ▷ View online
45
CX-JN44
IC251 BA5947FM
1
LEVEL SHIFT
MUTING
D
15
16
+
–
+
–
D
D
17
18
D
19
20
VREF
21
22
23
24
25
26
27
28
PREVCC
OPOUT
OUTVREF
CH4CAPA
CH4IN
CH3FIN
CH3RIN
GND
MUTE
POWVCC
CH3OUTF
CH3OUTR
CH4OUTF
CH4OUTR
OPIN
–
2
OPIN+
INTERFACE
14
13
D
12
11
D
10
9
8
7
6
CH2FIN
CH2RIN
GND
5
4
CH1FIN
CH1RIN
VREFIN
POWVCC
CH2OUTR
CH2OUTF
CH1OUTR
CH1OUTF
INTERFACE
D
D
3
SW
INTERFACE
– DRIVER Board –
IC701, 702 BA6956AN
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
– MAIN Board –
IC201 BA3126N
1
REC SW1
2
3
PB SW1
GND
4
CONT
5
GND
6
V
CC
7
PB SW2
8
GND
9
REC SW2
46
CX-JN44
IC101 BD3401KS2
1
D1
2
D2
3
E1
9
TAPE
A1
10
TAPE
A2
11
TAPE
B1
12
TAPE
B2
13
RECNF2
14
RECOUT2
5
PBNF2
6
PBOUT2
7
PBOUT1
4
E2
8
PBNF1
15
RECOUT1
16
RECNF1
33 VOLOUT1
34 BBNF1
35 BBIN1
36 VIN1
DIGITAL
CONTROL
64
C2
+
−
−
+
−
+
−
−
+
−
ALC
ATT
ATT
ALC
DI-LIMITER
SURROUND
17
ALC
18
SC
19
SI
27
LF3
28
LF2
29
LF1
30
BBIN2
20
VDD
21
GND
22
VCC
23
1/2 VCC
24
FILTER
+
−
32
VOLOUT2
+
−
25
SWOUT
26
LF4
+
−
−
LOW-PASS
FILTER
SOFT
SWITCH
BUFFER
MIX
MIC AMP
+
−
31
BBNF2
38 VIN2
37
TONE
OUT1
OUT1
48 MNF2
+
−
−
+
−
+
−
+
−
+
−
+
−
+
−
+
−
−
63
C1
62
B2
61
B1
60
A2
59
A1
45 MNF1
44 BNF1
42 BOUT2
41 BNF2
39
TONE
OUT2
OUT2
40 AMS OUT
47 MOUT2
46 MOUT1
43 BOUT1
+
−
58
MIC
56
SAOUT1
55
SAOUT2
57
CAP
+
−
INPUT
SELECT
+
−
+
−
54
LINEOUT1
53
LINEOUT2
52
SUR2
51
SUR1
49
TNF2
50
TNF1
TONE
CONTROL
TONE
CONTROL
+
+
+
+
47
CX-JN44
6-22. IC PIN FUNCTION DESCRIPTION
• MAIN BOARD IC371 BU2099FV (LOADING/TABLE MOTOR DRIVER)
Pin No.
Pin Name
I/O
Description
1
VSS
—
Ground terminal
2
N.C.
—
Not used
3
DATA
I
Serial data input from the system controller
4
CLOCK
I
Serial data transfer clock signal input from the system controller
5
LCH
I
Latch pulse signal input from the system controller
6
Q0
O
Recording/playback selection signal output terminal
7
BIAS
O
Recording bias control signal output terminal
8, 9
Q2, Q3
O
Not used
10
Q4
O
CD muting on/off control signal output terminal
11
Q5
O
Tuner muting on/off control signal output to the FM/AM tuner pack
12
Q6
O
Power amplifier on/off control signal output terminal
13
Q7
O
Loading motor drive signal output terminal
14
Q8
O
Loading motor drive signal output terminal
15
Q9
O
Table motor drive signal output terminal
16
Q10
O
Table motor drive signal output terminal
17
Q11
O
Front speaker on/off relay drive control signal output terminal
18
SO
O
Serial data output terminal Not used
19
OE
—
Not used
20
VDD
—
Power supply terminal (+3.3V)
48
CX-JN44
• PANEL BOARD IC601 LC876964C-53V9-E (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-MP3 CS
O
Capstan/reel motor drive signal output terminal
2
O-MP3 LP
O
Plunger (deck-B) drive signal output terminal
3
I-MP3 ACK
I
Plunger (deck-A) drive signal output terminal
4
I-MP3 REQ
I
Request signal input terminal Not used
5
I-SCOR
I
Subcode Q data request signal input from the CD DSP
(Q-DATA REQ)
6
O-MP3 RESET
O
Reset signal output terminal “L”: reset Not used
7
I-BU1924 DATA
I
RDS serial data input from the FM/AM tuner pack Not used
8
I-BU1924 CLK
I
RDS serial data transfer clock signal input from the FM/AM tuner pack Not used
9
I-VOLUME-IN1
I
Jog dial pulse input terminal (VOLUME)
10
I-VOLUME-IN2
I
Jog dial pulse input terminal (VOLUME)
System reset signal input terminal “L”: reset
11
RESET
I
For several hundreds msec. after the power supply rises, “L” is input,
then it changes to “H”
12
I-XT1
I
System clock input terminal (32.768 kHz)
13
O-XT2
O
System clock output terminal (32.768 kHz)
14
VSS1
—
Ground terminal
15
CF1
I
System clock input terminal (10 MHz)
16
CF2
O
System clock output terminal (10 MHz)
17
VDD1
—
Power supply terminal (+3.3V)
18
I-PROTECT
I
Protect signal input from the amplifier circuit
19
WFR/HP/MIC-IN
I
Headphone detection signal input from the electrical volume
20
I-CD ENCODER
I
Disc tray address detection signal input terminal
21
I-CD
I
Disc tray open/close detection signal input terminal
OPEN/CLOSE
22
I-TAPE A STAT
I
Deck-A cassette detection signal, deck-A mode detection signal and recording
(reverse direction) detection signal input terminal (A/D input)
23
I-TAPE B STAT
I
Deck-B cassette detection signal, deck-B mode detection signal and recording
(forward direction) detection signal input terminal (A/D input)
24
I-STREAM/VACS
I
VACS/stream signal input terminal (A/D input)
25 to 27
I-KEY3 to I-KEY1
I
Front panel key input terminal (A/D input)
28
I-SIRCS IN
I
Remote control signal input terminal
29
I-AC CUT
I
AC detection signal input terminal “L”: AC off
30 to 42
G13 to G1
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 (+3.3V)
47 to 50
S4 to S7
O
Segment drive signal output to the fluorescent indicator tube
51
–VPP
—
Power supply terminal (–27V)
52 to 65
S8 to S21
O
Segment drive signal output to the fluorescent indicator tube
66
I-SPEC/
I
Destination setting signal, model setting signal and VACS/stream gain control
MODEL/METER
signal input terminal
67
I-TUNED-IN
I
Tuning detection signal input from the FM/AM tuner pack “L”: tuned
68
I-STEREO-IN
I
FM stereo detection signal input from the FM/AM tuner pack “L”: stereo
69
I-AMS-IN
I
Auto music sensor detection signal input from the electrical volume
“L”: music is present, “H”: music is not present
70
I-REEL-A-IN
I
Deck-A tape reel rotating detection signal input terminal
71
I-REEL-B-IN
I
Deck-B tape reel rotating detection signal input terminal
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