Sony HCD-BX7 / HCD-DX7 / HCD-DX7J Service Manual ▷ View online
HCD-BX7/DX7/DX7J
42
42
7-21. PRINTED WIRING BOARD – TRANS SECTION – (DX7, DX7J MODEL)
• See page 21 for Circuit Boards Location.
HCD-BX7/DX7/DX7J
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43
7-22. SCHEMATIC DIAGRAM – TRANS SECTION – (DX7, DX7J MODEL)
HCD-BX7/DX7/DX7J
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44
7-24. IC PIN FUNCTION DESCRIPTION
• MAIN BOARD IC401 M30622MAA-A25FP (MASTER CONTROL)
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
O
O
O
O
O
I
I
—
—
I
O
I
O
—
I
—
I
I
I
I
I
O
I
I
O
O
I
O
O
O
—
I
I
I
O
I
O
I
I
I
O
O
O
I
O
I
I
I
I
I
Description
Not used.
Not used.
Not used.
Data signal output for IC101 (M61504FP)
Clock signal output for IC101 (M61504FP)
Not used.
AC CUT ON (L) / OFF (H) CHECK
Connected to ground.
Connected to ground.
SUB CLOCK input. (32.768kHz)
SUB CLOCK output. (32.768kHz)
System reset input.
MAIN SYSTEM CLOCK output. (16MHz)
Vss
MAIN SYSTEM CLOCK input. (16MHz)
Power supply. (+5V)
PULL UP (EVER +5V)
WAKE UP signal input. (L)
CD Q-data request signal input.
RDS interrupt signal input.
RDS data signal input.
Tuner mute signal output.
STEREO detect signal input. L=ON, H=OF
TUNED detect signal input. L=ON, H=OFF
TUNER chip eneble output.
TUNER data output.
TUNER data input.
TUNER clock signal output.
IIC SCL output.
IIC SDA output.
Not used.
Subcode Q data input. (CD data)
Subcode Q data input. (CD clock)
Not used.
CD data input.
Not used.
CD clock input.
Not used.
Clock check signal input.
BD condition signal input.
MODE signal input.
CD latch signal output.
CD reset signal output.
Loading motor control signal input.
Loading motor control signal output.
Tray open detect signal input.
Tray close detect signal input.
Pick-up up/down detect signal input.
CD table detect signal input.
Not used.
Pin Name
SURROUND 1
SURROUND 2
SURROUND 3
498-DATA
498-CLK
N.C
AC-CUT
GND
GND
XC IN
XC OUT
RESET
X-OUT
VSS
X-IN
VCC
NMI
WAKE_UP
SCOR
RDS-INT
RDS-DATA
ST-MUTE
STEREO
TUNED
ST-CE
ST-DOUT
ST-DIN
ST-CLK
IIC_CLK
IIC_DATA
TXDI
SQ-DATA
SQ-CLK
RST1
CD-DATA
N.C
CD-CLK
N.C
CLOCK-OUT
SENS
HOLD
XLT
XRST
LOAD-IN
LOAD-OUT
OPEN
CLOSE
UP/DOWN SW
T-SENS
TEST MODE
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
I
I
I
I
I
I
O
O
O
O
I
—
I
—
I
I
I
I
I
I
O
I
O
O
O
O
O
O
O
I
O
I
I
O
O
O
O
O
O
O
O
O
O
O
I
—
I
—
—
O
Description
Not used.
Not used.
Not used.
Not used.
Not used.
Not used.
A deck trigger control signal output.H=ON, L-OFF
B deck trigger control signal output.H=ON, L-OFF
Capstan motor High/Low speed control signal output.
Capstan motor REV/FWD/STOP control signal output.H=REV, L=FWD/STOP
Not used.
POWER SUPPLY (+5V)
Not used.
Ground.
Not used.
Not used.
A deck half detect signal input.
A deck play detect signal input.
B deck play detect signal input.
AMS signal input. L=ON,H=OFF
Tape deck line mute ON/OFF signal output. H=ON, L=OFF
REC/PB/PASS select signal input.
DOLBY NR ON/OFF signal output. H=ON, L=OFF
REC mute ON/OFF signal output. L=ON, H=OFF
BIAS ON/OFF signal output.H=ON, L=OFF
EQ High/Normal select signal output. H=High, L=Normal
Playback deckA/B select signal output. H=deckB, L=deckA
ALC ON/OFF signal output. L=ON, H=OFF
Tape deck relay ON/OFF signal output. H=ON, L=OFF
Not used.
STANDBY relay control signal output.
Speaker protect signal input. L=ON, H=OFF
Not used.
Line mute signal output. L=ON, H=OFF
CD-POWER ON/OFF signal output. H=ON, L=OFF
Not used.
Speaker terminal relay control signal output. H=ON, L=OFF
POWER ON/OFF signal output. H=ON, L=OFF
Not used.
A deck reel pulse detect signal output.
B deck reel pulse detect signal output.
Not used.
B deck half detect signal input.
KEY (for jig) / CD adjust.
MODEL input.
Analog ground.
Version select signal input.
Analog Reference Voltage
Analog Power Supply
Power amplifier mute ON/OFF signal output. H=ON, L=OFF
Pin Name
N.C
N.C
N.C
N.C
N.C
N.C
A TRIG
B TRIG
CAPM-H/L
CAPM-CONT
N.C
VCC
N.C
VSS
N.C
N.C
A HALF
A PLAY
B PLAY
AMS-IN
TC-MUTE
R/PB/PAS
NR-ON/OFF
REC-MUTE
BAIS
EQ-H/N
PB-A/B
ALC
TC-RELAY
N.C
STBY-RELAY
PROTECT
DBFB-ON/OFF
LINE-MUTE
CD-POWER
F-SHIFT
RELAY-H
POWER
N.C
A SHUT
B SHUT
SOFT-TEST
B HALF
KEY/CD ADJ
MODEL-IN
AVSS
SPEC-IN
VREF
AVCC
STK-MUTE
45
Pin No.
1
2
3
4
5
6
7
8
9-10
11
12-14
15
16
17-19
20
21-25
26
27
28
29
30
31
32
33-49
50
51
52-85
86
87
88
89
90
91
92
93-94
95
96
97
98
99
100
I/O
I
I
I
I
O
O
O
O
O
O
O
O
O
I
I
I
I
O
O
—
—
—
—
O
O
—
O
I
—
—
I
—
O
I
I
I
O
O
O
I
I
Description
VOLUME A signal input.
VOLUME B signal input.
Head phone detect signal input. H=ON, L=OFF
Not used.
TUNER LED driver output.(high active)
CD LED driver output.(high active)
TAPE A/B LED driver output.(high active)
MD/VIDEO LED driver output.(high active)
Not used.
GROOVE LED driver output.(high active)
Not used.
REC/PAUSE LED driver output.(high active)
SURROUND LED driver output.(high active)
KEY input. (AD)
BPF input. (AD)
BPF input. (AD)
BPF input. (AD)
TIMER SEL LED driver output.
STANDBY LED output.
Ground.
Ground.
Analog reference voltage.
Power supply (+5V)
FL gride signal output.
FL segment signal output.
Power supply (+5V)
FL segment signal output.
Not used.
–]30V driving power for FL.
Power supply (+5V)
12.5MHz (Xin)
Ground.
12.5MHz (Xout)
RESET (low active)
Not used.
Connected to ground.
WAKE UP signal output for master controller. (PULL UP)
IIC SDA
IIC SCL
Not used.
Remote commander input. (input capture)
Pin Name
VOLUME A
VOLUME B
HEADPHONE
N.C
TUNER
CD
TAPE A/B
MD/VIDEO
N.C
GROOVE
N.C
REC/PAUSE
SURROUND
KEY0-2
Super Low Freq (BPF 0)
BPF1-5
ALL BAND
TIMER
STANDBY
VSS
VASS
AVREF
VDD
G17-1
P1
VDD VFT
P2-35
N.C
VKK
VDD
Xin
VSS
Xout
RESET
N.C
TEST
WAKE UP
I2C data
I2C clk
N.C
SIRCS
• PANEL BOARD IC601 TMP88CP77F-1A22 (DISPLAY CONTROL)
Pin No.
1
2
3
4
5
6
7
8
9-10
11
12-14
15
16
17-19
20
21-25
26
27
28
29
30
31
32
33-49
50
51
52-85
86
87
88
89
90
91
92
93-94
95
96
97
98
99
100
I/O
I
I
I
I
O
O
O
O
O
O
O
O
O
I
I
I
I
O
O
—
—
—
—
O
O
—
O
I
—
—
I
—
O
I
I
I
O
O
O
I
I
Description
VOLUME A signal input.
VOLUME B signal input.
Head phone detect signal input. H=ON, L=OFF
Not used.
TUNER LED driver output.(high active)
CD LED driver output.(high active)
TAPE A/B LED driver output.(high active)
MD/VIDEO LED driver output.(high active)
Not used.
GROOVE LED driver output.(high active)
Not used.
REC/PAUSE LED driver output.(high active)
SURROUND LED driver output.(high active)
KEY input. (AD)
BPF input. (AD)
BPF input. (AD)
BPF input. (AD)
TIMER SEL LED driver output.
STANDBY LED output.
Ground.
Ground.
Analog reference voltage.
Power supply (+5V)
FL gride signal output.
FL segment signal output.
Power supply (+5V)
FL segment signal output.
Not used.
–]30V driving power for FL.
Power supply (+5V)
12.5MHz (Xin)
Ground.
12.5MHz (Xout)
RESET (low active)
Not used.
Connected to ground.
WAKE UP signal output for master controller. (PULL UP)
IIC SDA
IIC SCL
Not used.
Remote commander input. (input capture)
Pin Name
VOLUME A
VOLUME B
HEADPHONE
N.C
TUNER
CD
TAPE A/B
MD/VIDEO
N.C
GROOVE
N.C
REC/PAUSE
SURROUND
KEY0-2
Super Low Freq (BPF 0)
BPF1-5
ALL BAND
TIMER
STANDBY
VSS
VASS
AVREF
VDD
G17-1
P1
VDD VFT
P2-35
N.C
VKK
VDD
Xin
VSS
Xout
RESET
N.C
TEST
WAKE UP
I2C data
I2C clk
N.C
SIRCS
• PANEL BOARD IC601 TMP88CP77F-1A22 (DISPLAY CONTROL)
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