Akai LTA-32N658HCP, Руководство по обслуживанию, Страница: 37 / 58

(1) Socket definition
Serial
number
Position
number
Connecting object Function description
1 CON1 Power panel +12V
，
+12V
，
GND
，
GND
2 CON4 Speaker L+,L-,R+,R-
3 CON5 Earphone Board
4 CON8 SCART1 input
5 CON9 SCART2 input
6 CON10
CON27
HDMI input
7 CON13 VGA audio signal input
8 CON12 S terminal input
9 CON14 VGA input
10 CON21 AV Input
11 CON15 Standby
12 CON16 Standby
13 CON18 Keyboard +3.3V
、
GND
、
KEY1
、
KEY2
14 CON19 Remote control
receiving board
+3.3V 、 REMOTE 、 GND 、 indicator1 、 indicator1
15 CON17 Standby
16 CON20 Back light control line GND
，
GND
，
back light switch control
，
back light
brightness control
17 CON23 Power panel 5V-SB,GND,GND,5V,5V,5V-SB,GND,GND,12V,12V
(2) Main components descriptions
Serial
numbe
r
Position
number
component Function description
A
U1
SVP-AX32LF/SVP-AX
68LF Video decoder, image processor, A/D and D/A
conversion
B
U7 HY5DU281622FTP-4 8M × 16bits DDR
C
U3 AT24C64 EEPROM
D
U5
W25X80-VSSIG 8M-bit Serial Flash, Store the Control program.
E
U9
TDA9886T
Alignment-free multistandard vision,sound AM
and FM processing
F
U11
74HC4052 Audio input switch of AV terminal
G
U12 、 U16
AT24C02 EEPROM
H
U15
74LVC14A
VGA line and field synchronizing signal
waveform shaping
I
U17
IRF7404 Thermoelectric Cooler Controller
J
U19 AP1117D25 5V to 2.5V DC-DC Converter
K
U24
AP1117E33 5V to 3.3V DC conversion
36