Sony HCD-XB8 / LBT-XB8AV / MDS-B5 Service Manual ▷ View online
— 85 —
• IC601 DISPLAY CONTROL (TMP87CH75-6554)
Pin No.
Pin Name
I/O
Function
1
SEG35
O
FL segment signal output
2
VLOAD
–
Power supply (–25V) for FL segment signal output
3 to 10
LED1 to LED8
O
LED driver output
11
VSS
–
Ground
12
X-OUT
O
13
X-IN
I
14
RESET
I
Reset signal input from main controller
15
LED 9
O
16
LED10
O
Connected ground
17
TEST
I
18 to 23
LED11 to LED16
O
LED driver output
24
VOL-A
O
Rotary encoder (S701) pulse input
25
LED17
O
LED driver output
26
JOG-A
I
Rotaly encoder (S711) pulse input
27
CLOCK
I
Serial clock input from main controller
28
DATA
I
Serial data input from main controller
29
LED SELECT
O
LED select signal output
30
VDD
–
Power supply (+5V)
31
VSS
–
Ground
32
MODEL
I
Version select signal input
33 to 37
KEY1 to KEY5
I
Key input
38
DOOR SW
I
DOOR SW (S691) ON/OFF signal input
39
SIRCS
I
Remote commander signal input
40
VOL-B
I
Rotary encoder (S701) pulse input
41
JOG-B
I
Rotary encoder (S711) pulse input
42
SPEANA-1
I
Spectrum analyzer input
43
SPEANA-2
I
Spectrum analyzer input
44
SPEANA-3
I
Spectrum analyzer input
45
SPEANA-4
I
Spectrum analyzer input
46
L + R
I
Spectrum analyzer (high frequency) input
47
LED18
O
LED driver output
48
VASS
–
Ground
49
VAREF
I
Analog reference voltage input
50
VDD
–
Power supply (+5V)
51 to 56
GR1 to GR16
O
FL gride signal output
67 to 100
SEG1 to SEG34
O
FL segment signal output
X’tall (8MHz)
• Abbreviation
FL : Fluorescent indicator tube
— 86 —
Pin No.
Pin Name
I/O
Function
• IC701 MASTER CONTROL (uPD780018YGF-019-3BA)
Not used
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
5
KCON-ON
O
6
F-RELAY
O
Front speaker relay control output (Not used)
7
R-RELAY
O
Rear speaker relay control output
8
PL-RELAY
O
Not used
9
TEST
I
Connected to 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 to 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
RDS data interrupt input
22
RDS-DATA
I
RDS data interrupt input
23
VDD
–
Power supply (+5V)
24
AVDD
I
Analog reference voltage input.
25
ADJ
I
CD adjust point port
Normal “H”
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 to ground
30
SPEC-IN
I
Version select signal input
31
ADJ 2
I
Connected to ground
32
DEMO-CHANGE
I
DEMO H/L select signal input
(Fixed at fixed at “L”)
33
AVSS
–
Ground
34
SQ-DATA-IN
I
Subcode Q data clock input
35
—
I
Not used
36
SQ-CLK
I
Sub code Q data clock input
37
SW-ON/OFF
O
Not used
38, 39
FUNC 1, 2
I
Connected to ground
40
VSS
–
Ground
41
VOL-LAT
O
Latch signal to erectrial volume (IC604)
42
PL-LAT
O
Latch signal to pro-logic (IC601, 602)
43
COM-DIN
I
Connected to ground
44
COM-DOUT
O
Common serial data output
— 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-CLK
O
CD clock output
49
MSM-CMD
O
Not used
50
MSM-BUSY
I
Connected to ground
51
MSM-LT
O
52
MSM-NAR
I
Not used
53
MSM-CH
O
54
INPUT-CHANGE
O
Input sensitivity switching output
55
IIC-DATA
O
Data output for IC601
56
IIC-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 —
Function
I/O
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
I
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
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