Tel +86-755-3331xxxx Fax +86-755-3331xxxx
Nanshan District, Shenzhen, Guangdong
B Building, TCL Tower, Nanhai Road
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B
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THIS DRAWING CANNOT BE COMMUNICATED TO UNAUTHORIZED PERSONS COPIED UNLES S PERMITTED IN WRITING
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FORMAT DIN A2
0.6V
FSW=800KHz
Fixed Fsw=500KHZ
Vref=0.6V
(Vin=5V-22V)
Fixed OCP=6.7A
Must controlled by PWM
L=>POWER_ON
H=>POWER_OFF
(5)
(5)
(5)
Without via on net KEY_IN
The distance between different net via>2mm
LDO 3V3 TO 1V8
LDO 5V TO 3V3
KEY Connector
*
12V TO 1V2
12V TO 5V
DDR 1V5
Vref=0.6V
MTK
MAIN POWER
Delete R114 when the I/O(KEY_IN) support 3.3V
SY8291,2015-04-23
12V TO 3V3SB
L001
L900
ADIM
L902
R021
L006
C031
C030
220P
C029
0.22U
L005
1UH
R019
1M
10R
NC/
R015
R014
R013
R010
/NC
D900
PESD5V0S1BL
NC/
R902
L003
R001
L002
IR
BL_ON
PDIM
Содержание 55D1620
Страница 35: ...2 No Display Black Panel Back light is OK sound is OK but no picture...
Страница 37: ...4 No sound O ll i l i h d One or all signal source without sound...
Страница 38: ...5 Signal source no function One or several source no function One or several source no function...
Страница 39: ...6 Abnormal Display OSD NG or picture NG OSD NG or picture NG...
Страница 40: ...7 No tuning channels DTV or ATV no Channels DTV or ATV no Channels...
Страница 42: ......