Sony HCD-XB4K / LBT-XB4K / LBT-XB4KS Service Manual ▷ View online
– 86 –
1
TA-MUTE
O
Line mute signal output
2
DBFB-H/L
O
DBFB H/L select signal output
3
427-LT
O
Latch signal output for IC201 (62427)
4
KCON-LT
O
Latch signal output for IC501 (Key Control)
5
KCON-ON/OFF
O
Key control ON/OFF signal output
6
F-RELAY
O
Front speaker relay control output
7
R-RELAY
O
Not used
8
PL-RELAY
O
9
TEST
I
Connected ground
10
X2
O
X’tal (5MHz)
11
X1
I
12
VDD
–
Power supply (+5V)
13
XT2
O
X’tal (32.768 KHz)
14
XT1
I
15
RESET
I
Reset signal input
16
INT/IN
I
Connected ground
17
INT/IN/OUT
I
18
SCOR
O
Subcode data request signal output
19
SOFT-TEST
O
Software test port
20
AC-CUT
I
Back up signal input
21
RDS-INT
I
Not used
22
RDS-DATA
I
23
VDD
–
Power supply (+5V)
24
AVDD
I
Analog reference voltage input
25
ADJ
I
CD adjust point port
26
A-SHUT
I
A Deck reel pulse detector
27
B-SHUT
I
B Deck reel pulse detector
28
B-HALF
I
Half detector signal input
29
CLK-CHECK
I
Connected ground
30
SPEC-IN
I
Version select signal input
31
ADJ 2
I
Connected ground
32
DEMO-MODE
I
Connected ground
33
AVss
–
Ground
34
SQ-DATA-IN
I
Subcode Q data input
35
—
–
Not used
36
SQ-CLK
I
Subcode Q data clock input
37
SW-ON/OFF
O
Not used
38, 39
FUNC 1, 2
I
Connected ground
40
Vss
–
Ground
41
VOL-LAT
O
Not used
42
PL-LAT
O
43
COM-DIN
I
Connected ground
44
COM-DOUT
O
Common serial data output
Pin No.
Pin Name
I/O
Function
6-18.
IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC301 µPD780018Y (MAIN CONTROL)
– 87 –
Pin No.
Pin Name
I/O
Function
45
COM-CLK
O
Common serial clock output
46
CD-POWER
O
CD power on signal output
47
CD-DATA
O
CD data output
48
CD-CLOK
O
CD clock output
49
MSM-CMD
O
Not used
50
MSM-BUSY
I
Connected ground
51
MSM-LT
O
52
MSM-NAR
I
Not used
53
MSM-CH
O
54
INPUT-CHANGE
O
Not used
55
11C-DATA
O
Data output for IC601
56
11C-CLK
O
Clock output for IC601
57
XRST
O
CD reset signal output
58
XLT
O
CD latch signal output
59
FOUCUS-SW
O
Not used
60
TBL-L
O
Table motor control output
61
TBL-R
O
62
TRAY-LED
O
CD tray LED ON/OFF output
63
LOAD-OUT
O
Not used
64
LOAD-IN
O
65
ST-CLK
O
Tuner clock output
66
ST-DIN
I
Tuner data input
67
ST-DOUT
O
Tuner data output
68
ST-CE
O
Tuner chip enable output
69
TUNED
I
Tuned detection for tuner
70
STEREO
I
Stereo detection for tuner
71
Vss
–
Ground
72
ST-MUTE
O
Tuner mute signal output
73
SENS2
I
BD Condition signal input
74
SENS
I
75
DISC-SENS
I
Not used
76
T-SENS
I
CD table detection signal input
77
UP-SW
I
Up SW (S201) signal input
78
ENC 3
I
79
ENC 2
I
Not used
80
ENC 1
I
81
OUT-OPEN
I
Not used
82
CAP-M-H/N
O
Capstan motor H/N speed select signal output
83
B-TRG
O
Trigger motor control output
84
A-TRG
O
Trigger motor control output
85
TRG-LOW
O
Trigger motor control output
86
CAP-M-ON/OFF
O
Capstan motor ON/OFF signal output
87
PB-A/B
O
PB Deck A/Deck B select output
– 88 –
88
EQ-H/N
O
Equalizer H/N select output
89
BIAS
O
Bias ON/OFF signal output
90
REC-MUTE
O
REC mute ON/OFF selection output
91
NR-ON/OFF
O
NR ON/OFF signal output
92
R/P-PASS
O
REC/PB/PASS selection output
93
TC-MUTE
O
TC mute ON/OFF selection output
94
A-PLAY-SW
I
Deck A play detect
95
B-PLAY-SW
I
Deck B play detect
96
TC-RELAY
O
REC/PB head selection output for IC602
97
A-HALF
I
Deck A cassette detect
98
POWER
O
POWER ON/OFF signal output
99
SW-F-CHG
O
Super woofer mode signal output
100
STK-MUTE
O
Power amp ON/OFF signal output
Pin No.
Pin Name
I/O
Function
– 89 –
1-6
LED3-LED8
O
LED driver output
7
VSS
–
Ground
8
X-OUT
O
X’tall (8MHz)
9
X-IN
I
10
RESET
I
Reset signal input from main controller
11
LED 9
O
12
LED10
O
Connected ground
13
TEST
I
14-19
LED11-LED19
O
LED driver output
20
VOL-A
I
Rotary encoder (S701 VOLUME) pulse input
21
DOOR SW
I
DOOR SW (S651) ON/OFF signal input
22
JOG-A
I
Rotaly encoder (S711 AMS) pulse input
23
CLOCK
I
Serial clock input from main controller
24
DATA
I
Serial data input from main controller
25
LED SELECT
O
LED select signal output
26
MODEL
I
Version select signal input
27-30
KEY1-KEY4
I
Key input
31
SPEANA-3
I
Connected ground
32
L + R
I
Spectrum analyzer (high frequency) input
33
SIRCS
I
Remote commander signal input
34
VOL-B
I
Rotary encoder (S701 VOLUME) pulse input
35
JOG-B
I
Rotary encoder (S711 AMS) pulse input
36
SPEANA-1
I
Spectrum analyzer (Low frequency) input
37
SPEANA-2
I
Spectrum analyzer (Middle frequency) input
38
VASS
–
Ground
39
VAREF
I
Analog reference voltage input
40
VDD
–
Power supply (+5V)
41
—
–
Not used
42-56
GR1-GR15
O
FL gride signal output
57-77
SEG1-SEG77
O
FL segment signal output
78
VKK
–
–30V driving power for FL
79, 80
LED1-LED2
O
LED driver output
Pin No.
Pin Name
I/O
Function
PANEL BOARD IC601 TMP87CH74 (DISPLAY CONTROL)
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