Read Sony HCD-XB8K / LBT-XB8AVK / LBT-XB8AVKS Service Manual online
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• 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
I
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
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