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Service Manual
21
Pin No.
Name
Function
Valid Level
20
RS
Data and command
-
21 WR
Write
signal
L
22 /OE
Read
signal
L
24
25
3V3D
Power supply: 3.3V
-
27
LEDA
Power supply for backlight
-
28
29
30
LEDK1
LEDK2
LEDK3
Backlight control
L
J7007
:
21-Pin Keyboard Interface
Pin No.
Name
Function
Valid Level
1
4
21
GND
Ground (analog & digital)
L
2
3
LOW-MIC+
LOW-MIC-
Lower MIC interface
-
5
6
16
I2C-SCL
I2C-SDA
L_INT
Reserved
-
7
8
9
10
11
KB-C3
KB-C4
KB-C0
KB-C1
KB-C2
Keyboard column
-
12
13
14
KB-R1
KB-R2
KB-R3
Keyboard row
L
Summary of Contents for PT580
Page 1: ......
Page 50: ...Service Manual Exploded View 48...
Page 51: ...Service Manual 49...
Page 54: ...Service Manual Packing Guide 52...
Page 55: ...PT580 F5 PCB View Main Board Top Layer 53 PCB View...
Page 56: ...PT580 F5 PCB View Main Board Bottom Layer 54...
Page 57: ...PT580 F5 PCB View MMI Board Top Layer 55...
Page 58: ...PT580 F5 PCB View MMI Board Bottom Layer 56...
Page 104: ...1616300000100...