![background image](http://html.mh-extra.com/html/haier/hl15white/hl15white_service-manual_136717008.webp)
Key IC Description
1.UOC3
Function
:
TV signal processor with Teletext and Nicam
PIN SYMBOL
DESCRIPTION
1 VSSP2
ground
2 VSSC4
ground
3
VDDC4
Digital supply to SDACs(1.8V)
4 VDDA3(3.3V)
Supply(3.3V)
5 VREF_POS_LSL
Positive
reference voltage SDAC(3.3V)
6 VREF_HPL
Negative
reference voltage SDAC(0V)
7 VREF_HPR
Positive
reference voltage SDAC(3.3V)
8 VREF_HRP
Negative
reference voltage SDAC(0V)
9 VREF_POS_HPR
Positive
reference voltage SDAC(3.3V)
10
XTALIN
Crystal oscillator input
11 XTALOUT
Crystal
oscillator output
12 VSSA1
ground
13 VGUARD/SWIO
V-guard input/I/O switch (e.g.4mA current sinking
capability for direct drive of LEDs)
14 DECDIG
Decoupling
digital
supply
15 VP1
1
st
supply voltage TV-pro5V)
16 PH2LF
Phase-2
filter
17 PH1LF
Phase-1
filter
18
GND1
Ground 1 for TV-processor
19
SECPLL
SECAM OLL decoupling
20 DECBG
Bandgap
decoupling
21
EWD/AVL
East-West drive output or AVL capacitor
22
VDRB
Vertical drive B output
23
VDRA
Vertical drive A output
24
VIFIN1
IF input 1
25
VIFIN2
IF input 2
26
VSC
Vertical sawtooth capacitor
27 IREF
Reference
current
input
28
GNDIF
Ground connection for IF amplifier
29 SIFN1/DVBIN1
SIF
input 1/ DVB input 1
30 SIFN2/DVBIN2
SIF
input 2/ DVB input2
31 AGCOUT
Tuner
AGC
output
32
EHTO
EHT/over voltage protection input
33
AVL/SWO/SSIF/REFO/
REFIN
Automatic volume leveling/switch output/sound IF
input sub-carrier reference output/external reference
signal mixer for DVB operation
Содержание HL15WHITE
Страница 1: ...HL15WHITE ...
Страница 7: ...Images of Module and Circuit Boards 1 images of Main Board 2 images of Power Supply ...
Страница 43: ......
Страница 44: ...Sincere forever ...