Sony CX-JN77 / JAX-N77 / JAX-PK77 Service Manual ▷ View online
53
CX-JN77
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
54
CX-JN77
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 motor/plunger driver
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)
•
IC Pin Function Description
55
CX-JN77
PANEL BOARD IC601 LC876996A-53H2-E (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-MP3 CS
O
Chip select signal output to the MP3 decoder
2
O-MP3 LP
O
Latch pulse signal output to the MP3 decoder
3
I-MP3 ACK
I
Acknowledge signal input from the MP3 decoder
4
I-MP3 REQ
I
Request signal input from the MP3 decoder
5
I-SCOR
(Q-DATA REQ)
I
Subcode Q data request signal input from the CD DSP
6
O-MP3 RESET
O
Reset signal output to the MP3 decoder “L”: reset
7
I-BU1924 DATA
I
RDS serial data input from the FM/AM tuner pack (AEP, UK only)
8
I-BU1924 CLK
I
RDS serial data transfer clock signal input from the FM/AM tuner pack (AEP, UK only)
9
I-VOLUME-IN1
I
Jog dial pulse input terminal (VOLUME)
10
I-VOLUME-IN2
I
Jog dial pulse input terminal (VOLUME)
11
RESET
I
System reset signal input terminal “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
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
OPEN/CLOSE
I
Disc tray open/close detection signal input terminal
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)
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)
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/
MODEL/METER
I
Destination setting signal, model setting signal and VACS/stream gain control signal input
terminal
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
“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
56
CX-JN77
Pin No.
Pin Name
I/O
Description
72
VDD4
—
Power supply terminal (+3.3V)
73
I-CD NUM
SENSOR
I
CD table address detection signal input terminal
74
O-POWER RELAY
O
Power on/off control signal output terminal “H”: power on
75
O-SYSTEM-MUTE
O
System muting on/off control signal output terminal “H”: muting on
76
O-POWER LED
O
LED drive signal output of the I/1 (power) indicator “H”: LED on
77
O-I-BASS LED
O
LED drive signal output of the i-BASS indicator “H”: LED on
78 to 80
NONE
O
Not used
81
I-MULTI-JOG IN1
I
Jog dial pulse input terminal (MULTI JOG)
82
I-MULTI-JOG IN2
I
Jog dial pulse input terminal (MULTI JOG)
83
I-LC72121 DI
I
Serial data input from the FM/AM tuner pack
84
O-LC72121 CE
O
Chip enable signal output to the FM/AM tuner pack
85
O-LC72121/
BU2099FV DO
O
Serial data output to the FM/AM tuner pack and motor/plunger drive
86
O-LC72121/
BU2099FV CLK
O
Serial data transfer clock signal output to the FM/AM tuner pack, loading/table motor driver and
motor/plunger driver
motor/plunger driver
87
O-BU2099FV LCH
O
Latch pulse signal output to the loading/table motor driver and motor/plunger driver
88
O-BU3401 CLK
O
Serial data transfer clock signal output to the electrical volume
89
VSS2
—
Ground terminal
90
VDD2
—
Power supply terminal (+3.3V)
91
O-BU3401 DATA
O
Serial data output to the electrical volume
92
O-XTCN
O
Oscillator control signal output to the CD DSP
93
O-X-RES (RESET)
O
Reset signal output to the CD DSP and motor/coil driver “L”: reset
94
O-XLT (CD-LAT)
O
Latch pulse signal output to the CD DSP
95
O-CD-DATA
O
Serial data output to the CD DSP
96
I-SENS
I
Serial data input from the CD DSP
97
O-CD-CLK
O
Serial data transfer clock signal output to the CD DSP
98
O-MP3-DO
O
Serial data output to the MP3 decoder
99
I-MP3-DI
I
Serial data input from the MP3 decoder
100
O-MP3-CLK
O
Serial data transfer clock signal output to the MP3 decoder
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