Akai LCT2715 Service Manual page 14

A
MT8205P1V3.2
MT8205E (PBGA388) LCDTV BOARD 4 LAYERS
1. INDEX
2. LDO
4
3. MT8205E PBGA388
4. MT8205 ANALOG DECOUPLING
5. MT8205 DIGITAL DECOUPLING
6. ICE I/F
7. DDR MEMORY & FLASH
8. DVI INPUT
9. AD9883
10. VGA IN & PC AUDIO IN
11. VIDEO IN & TUNER I/O
12. AUDIO / VIDEO IN CIRCUIT
13. WM8776 AUDIO CODEC
14. LVDS / CRT / TTL OUT
3
15 BACK LIGHT / KEYPAD
16. READER CARD I/F
HOLE/GND
H1
9 2
9 2
8 3
8 3
7 4
7 4
6 5
6 5
2
HOLE/GND
H2
9 2
9 2
8 3
8 3
7 4
7 4
6 5
6 5
HOLE/GND HOLE/GND
H3 H5
9 2 9 2
9 2 9 2
8 3 8 3
8 3 8 3
7 4 7 4
7 4 7 4
6 5 6 5
6 5 6 5
HOLE/GND HOLE/GND
H4 H6
9 2 9 2
9 2 9 2
8 3 8 3
8 3 8 3
7 4 7 4
7 4 7 4
1 6 5 6 5
6 5 6 5
A
B
UP3_0 BLACKLIGHT ON/OFF
MUTE<-->UP1_5
DV33A
R51 R52
10k 10k J2
1
RxD
2
TxD
3
4
RS-232
4x1 W/HOUSING
DIP4/W/H/P2.0
P5
CONNECTOR DB9
RSRXD
1
6 U6
RSTXD
2 13
R1IN R1OUT
7 8
R2IN R2OUT
3 11
T1IN T1OUT
8 10
T2IN T2OUT
4
C1 0.1uF
9 1
C+
5 3
C1-
C3 0.1uF
4
C2+ VCC
5
C2-
C6 0.1uF 2
V+
6
V- GND
C7 0.1uF
MAX232A
AUIO IN/OUT GND ANALOG INPUT GND DIGITAL GND
B
C
Rev
V0.1 1.FIRST VERSION
V0.2 1. 2.5V use 5VSB conversion. All 0402 change to 0603
2. LED_RED/GRN CIRCUIT CHANGE
3. Change Power on/off circuit(ORO7 CTRL PIN)
4. WM8776 DVDD Needed
5. Del the Si9936 LVDS Parts
6. Del DVI&AD9883 PARTS
VCC
5VSB
J24
1
2 R359
+12V
10k
3
J6
4
5
6 5 SYS_PWR
5VSB
7 4
8 3
2
1
DIP8/P2.0
SOT23/SMD
5x1 W/HOUSING
2N3904
DIP5/W/H/P2.0
TO Power BD
5VSB
24V
J108
INVERTER_PWR
1
2 + CE16
220uF/16v
3
C220UF16V/D6H11
4
5
6
8x1 W/HOUSING
DIP8/W/H/P2.54
+12V
+ CE93
220uF/16v
C220UF16V/D6H11
5VSB
SYSTEM EEPROM
12
9
U13
14 CB75
7 1
NC
5VSB 0.1uF
2
NC
TXD
3
TXD NC
4
GND
RXD
16
RXD
EEPROM 24C16
C8
SOP8/SMD
0.1uF
15
C
D
History
ORO7 High :POWER OFF
ORO7 LOW :POWER ON
Q14
TXD
R364
RXD
ORO7
1
4.7k SCL
SDA
+12V
TUNER_12V
ORO7
MUTE
For Tuner
L14
TUNER_12V
FOR Tuner
FB
BEAD/SMD/0805 + CE17
47uF/16v CB11
0.1uF
5VSB
R53 R54
10k 10k
8
VCC
7
WP
SCL
6
SCL
SDA
5
SDA
Title
LCD TV - MediaTek MT8205 Solution
Size Doc Number
C
Date: Tuesday, May 10, 2005
D
E
P# Date
2004/11/29
2005/03/09
4
TXD 3
3
RXD 3
SCL 6,9,11,13
SDA 6,9,11,13
+12V 2
TUNER_12V 11
ORO7 3
UP1_5 6
2
1
Rev
INDEX
V0.1
Sheet 1 of 16
E