ACER AL922 Service Manual

A

4 4

B

C

D

E

J2

4 5

J1

11

AudioBoard
connector

3 3

MainBoard
connector

2 2

LOUT

10

ROUT

9

L_EAR

8

R_EAR

7

LIN_2

6

RIN_2

5

RIN_1

4

LIN_1

3
2

MUTE

1

E&T_96113_1113

J5

MUTE

1

LED_Y

2

LED_G

3

GND

4

KEY_UP

5

KEY_DOWN

6

KEY_R

7

KEY_L

8

KEY_PWR

9

GND

10

E&T_96113_1013

S1

PT-002-B2

S2

PT-002-B2

2

2'

S3

PT-002-B2

3'

S4

PT-002-B2

1,1'

3

VR1

50K

S5

PT-002-B2

LI1 LO

2

LI2

7

RI1

3

RI2

SCJ-0348-C

321

D1

LYG2093 YEL/GRN

6

NC

8

RO

1

GND

VR

3 3'2'2 1

1'

J3

1
2

ACES_87502_0200

STRAIGHT/2.5

J4

1
2

ACES_87502_0200

STRAIGHT/2.5

1 1

Title

SCHEMATIC, KEY/B VT-901 LAM999

Size Document Number Rev

A3

404A79

A

B

C

D

Date: Sheet

22Thursday, July 18, 2002

E

1A

of

5

4

3

2

1

LVDS_IF

ER[0..7]
EG[0..7]

EB[0..7]

OR[0..7]
OG[0..7]

OB[0..7]

D D

DVS
DHS
DEN
DCLK

LVDS_EN

LCDON

LVDS_EN

Sheet 3

RED+

RED­GREEN+
GREEN-

BLUE+

C C

BLUE-

RXC+

RXC-

RX2+

RX2-

RX1+

RX1-

RX0+

RX0-

VS

DDC_SCL

DDC_SDA

HCLK

HFSn

SCL

SDA

B B

PCDETECTA

RED+
RED­GREEN+
GREEN­BLUE+
BLUE-

RXC+
RXC­RX2+
RX2­RX1+
RX1­RX0+
RX0-

HS

HS

VS
DDC_SCL

DDC_SDA
HCLK

HFSn
SCL

SDA

PCDETECTD

gm5115

RED+
RED­GREEN+
GREEN-

BLUE+
BLUE-

RXC+
RXC-

RX2+
RX2­RX1+

RX1-

RX0+

RX0­HSYNC

VSYNC
DDC_SCL

DDC_SDA

HCLK
HFSn

SCL AUDIO_ON
SDA

PCDETECTA
PCDETECTD

LVDS_EN

KEY DOWN

KEY RIGHT

KEY LEFT

KEY ONOFF

BRI_ADJ

ER[0..7]

EG[0..7]

EB[0..7]

OR[0..7]

OG[0..7]

OB[0..7]

DHS

DEN

DCLK

LED_Y

LED_G

KEY UP

PPWR

PBIAS

DVS

ER[0..7]
EG[0..7]
EB[0..7]

OR[0..7]
OG[0..7]
OB[0..7]

DVS
DHS
DEN
DCLK

GPIO8/IRQINn
GPIO21/IRQn
GPIO7
GPIO6
GPIO3/TIMER1
GPIO2/PWM2
GPIO1/PWM1

LCDON

BLKON
GPIO0/PWM0

6. LVDS_IF
Display

ER[0..7]
EG[0..7]
EB[0..7]

OR[0..7]
OG[0..7]

OB[0..7]

DVS
DHS
DEN
DCLK

AUDIO_ON
LED_Y

LED_G

KEY DOWN
KEY RIGHT

KEY UP

KEY LEFT
KEY ONOFF

PPWR

Power

PBIAS

BRI_ADJ

7. Power

3. Input Connectors

A A

4. gm5115

5. Display

Title

CTRL/B VL-901,VGA INPUT

Size Document Number Rev

B

401A78

5

4

3

2

Date: Sheet

27Thursday, July 04, 2002

1

of

1B

5

CN1

Shell

1

RX2-

2

RX2+

3

GND

4

RX4-

5

RX4+

6

SCL

7

SDA

8

VS

9

RX1-

10

RX1+

11

GND

12

RX3-

D D

13

RX3+

14

5V

15

GND

16

HP

17

RX0-

18

RX0+

19

GND

20

RX5-

21

RX5+

22

GND

23

RXC+

24

RXC-

C1

RED

C2

GRN

C3

BLU

C4

HS

C5

GND

Shell

DVI-D

DDC_5V

C C

D3 EC10QS04

D4 EC10QS04

D5 EC10QS04

SCL_IN
SDA_IN

DVI_5V

L8 STC222B

STS2125

R1 10K

HOT_PLUG

GND

DVI_5V

12

VGA_5V

12

+5V

12

PCDETECTD

4

R5 100
R6 100

3

2

RX2- SHT-4
RX2+ SHT-4

RX1- SHT-4
RX1+ SHT-4

RX0- SHT-4
RX0+ SHT-4

RXC+ SHT-4
RXC- SHT-4

1

DDC_5V

R2
47K

D1

5.6V

1 3

1 3

GND

C1

R3

0.1uF

47K

GND

D2

5.6V

U1

1

NC

2

NC

VCLK

3

NC

4

GND

24LC21A

GND

R4
47K

8

VCC

7
6

SCL

5

SDA

DDC_SCL SHT-4
DDC_SDA SHT-4

DDC_5V

C2

R8

R7

1
2
3
4

U2

NC
NC
NC
GND

24LC21A

VCLK

0.1uF
47K

GND

8

VCC

7
6

SCL

5

SDA

B B

GND

R9
47K

47K

VGA_SDA

VGA_SCL

D6

D7

5.6V

5.6V

1 3

1 3

HCLK SHT-4
HFSn SHT-4

R12 100

R15 100

CN2

11
12
13
14
15

VGA

GND

Pins 6/7/8 are R/ G/B
return lines resp.

S1S2

GND

Vsync

3.3V_DVDD

A A

NC/ZD1 DALC208SC6

VGA_BLU VGA_GRN

1

6
52

PCDETECTA

3

VGA_RED

4

Hsync

VGA_5V

C101

0.1uF

GND

PCDETECTA

VGA_RED
VGA_GRN

VGA_BLU

PCDETECTA

R18

75

R19

75

1
6
2
7
3
8
4
9
5
10

R10 20 1%
R11 56.2 1%

R13 20 1%
R14 56.2 1%

R16 20 1%
R17 56.2 1%

R20

75

GND

R21 100

R22 100

R23
510

D8

5.6V

1 3

C9
220pF

D9

5.6V

1 3

C10
220pF

C3 0.01uF
C4 0.01uF

C5 0.01uF
C6 0.01uF

C7 0.01uF
C8 0.01uF

3.3V_DVDD

C120

0.1uF

GND

SN74LVC14APWR

14

U3F

13 12

7

SN74LVC14APWR

14

U3A

1 2
7

SN74LVC14APWR

14

U3E

11 10

7

SN74LVC14APWR

14

U3B

3 4
7

RED+ SHT-4
RED- SHT-4

GREEN+ SHT-4
GREEN- SHT-4

BLUE+ SHT-4
BLUE- SHT-4

VS SHT-4

IN

HS SHT-4

GND

GND

Title

CTRL/B VL-901,VGA INPUT

Size Document Number Rev

C

401A78

5

4

3

2

Date: Sheet

1

37Thursday, July 04, 2002

1B

of