Acer AT2231 Service Manual download pdf (Page 60)

Key board

R006

4.3K OHM 1% 1/10W

1.73V

( Front )

SOURCE

SW001

2 1

SW005

2 1

Vol-

Power

SW006

2 1

SW004

2 1

R004

470 OHM 1% 1/10W

CH+

2.44V

0.35V

KEY1

Vol+

R007

1.8K OHM 1% 1/10W

2.44V

R001

11KOHM1/10W

R003

1.8K OHM 1% 1/10W

CH-

SW007

2 1

VOL+

R002

4.3K OHM 1% 1/10W

LOCK TYPE

Source

C001

0.1uF/25V

CN001

CONN

KEY2

Pull up R = 3.9K ohm to 3.3V

1.04V

C002

0.1uF/25V

CH-

1.73V

POWER

PCB key location

NOTE

SW002

2 1

VOL-

SW003

2 1

R005

11KOHM1/10W

CH+

1.04V

1 2 ... 55 56 57 58 59 60

Acer AT2230 & AT2231 1
Service Guide 1
Preface 4
Notice: 4
Warning: 4
Precautions 5
General Specifications 7
Precautions And Notices 8
D-SUB PIN Distribution 9
Analog RGB Signal Timing 10
Panel Features 11
Test Conditions 12
Optical Specifications 12
Chapter 2 13
Chapter 3 14
Teletext 15
Using the OSD Menus 16
Chapter 4 23
Disassemble the back cover 24
Remove the Shielding-EMI 24
Disassemble the speaker 25
Remove the main frame 26
Disassemble the IR board 26
Chapter 5 27
Abnormal display 28
No sound 29
No Power (No LED indicator) 30
W / LED, No Backlight 31
Key Board 32
2. Run the program ISP_Tool 33
“Connect” again 34
PC mode display adjustment 39
Pattern-1 39
Chapter 8 40
Part List 41
EDID Data 43
Chapter 9 44
IR board 47
Main Board 48
TV CVBS Output 49
Key Component 50
To scaler 51
8 bit LVDS 52
R/B SWAP 53
MST99980CLD-LF 53
2M X 16bit X 4BK 54
System Standby Power 56
ISP PORT 57
( Front ) 60
PCB key location 60

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Acer AT2231 Service Manual Page 60

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