Read Sharp PN-S655 (serv.man3) Service Manual online
PN-S655
BLOCK DIAGRAM
4 – 5
CN1202 LCD
DRIVE
CN1302 LED CONTROL, IR LIGHT
RECEIVE
CN1308 TEMPERATURE SENSOR
CN1310 AUDIO CONTROL
CN1401 I/F POWER
(POWER CONTROL)
CN1402 5V INPUT
CN1403 I/F POWER (12V INPUT)
CN1501 I/F POWER (5V INPUT)
[I/F PWB 2]
CN1
SOUND SIGNAL
CN2
PC SOUND SIGNAL
CN3
AUDIO CONTROL
46
VCC
12V power supply
47
VCC
48
VCC
49
VCC
50
VCC
Pin No.
Symbol
Function
1
-
O/S control
2
-
3
-
4
-
5
-
6
-
7
-
GND
8
-
GND
Pin No.
Symbol
Function
1
-
GND
2
-
LED red control
3
-
LED green control
4
-
5
-
Power supply KEY
6
-
Input switch KEY
7
-
GND
8
-
IR light receive
9
-
Power supply
10
-
11
-
12
-
Pin No.
Symbol
Function
1
-
Differential signal
2
-
3
-
Differential signal
4
-
Pin No.
Symbol
Function
1
-
9V power
2
-
Audio amplifier control
3
-
Audio amplifier error
4
-
Sound processor
control
control
5
-
6
-
GND
7
-
Pin No.
Symbol
Function
8
-
Sound processor
control
control
9
-
2.5V power
10
-
GND
11
-
3.3V power
12
-
GND
13
-
5V power
14
-
9.5V power
15
-
9.5V power
16
-
HDMI sound
17
-
18
-
Sount delay setting
19
-
20
-
GND
Pin No.
Symbol
Function
1
-
5V output
2
-
3
-
GND
4
-
5
-
Relay control
6
-
5, 12, 19V control
7
-
24V control
8
-
9
-
10
-
GND
11
-
Pin No.
Symbol
Function
1
-
5V output
2
-
3
-
GND
4
-
Pin No.
Symbol
Function
1
-
12V input
2
-
3
-
GND
4
-
Pin No.
Symbol
Function
1
-
5V input
2
-
3
-
GND
4
-
Pin No.
Symbol
Function
5
-
6
-
7
-
5V input
8
-
9
-
10
-
GND
11
-
12
-
Pin No.
Symbol
Function
---
b1
Sound output
---
b2
---
b3
Sound input
---
b4
---
a1
GNG
---
a2
---
a3
---
a4
Pin No.
Symbol
Function
1
---
GND
2
---
Sound input
3
---
Pin No.
Symbol
Function
1
---
9V power
2
---
Audio amplifier control
3
---
Audio amplifier error
4
---
Sound processor
control
control
5
---
6
---
GND
7
---
8
---
Sound processor
control
control
9
---
2.5V power
10
---
GND
11
---
3.3V power
12
---
GND
13
---
5V power
14
---
9.5V power
15
---
9.5V power
16
---
HDMI sound
17
---
18
---
Sount delay setting
19
---
20
---
GND
Pin No.
Symbol
Function
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