Changhong Electric LS18, Руководство по обслуживанию

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5
ATTENTION:
1.HDMI and YPbPr support to 1080P
；
2.The recommendation resolving ratio of PC is 1024X768
；
3.Side AV input must use a small board.
Chapter3 Main chip functions and the introductions of power supply
3-1 Main IC and functions of LS18
No. Item no. Model Main function
1 U21 DTI1-E4I1VH(JUB2.891.170) Tuner output IF signal
2 U2 MSD308PX Video decoder, image processor, A/D and D/A conversion
3 U4
AT24C04BN-SH-T
Store HDCP key
4 U52
AO4459
Power switch
5 U9
，
U15 W9751G6IB-25 DDR
6 U24 EN25Q64-104HIP Store program
7 U37
，
U38 LR1117/A-3.3
5V to 3.3V LDO
8 U39 LR1117/A-1.8 5V to 1.8V LDO
9 U36
LR1117/A-2.5
5V to 2.5V LDO
10 U51 AP1534SG13 5V to1.32V DC to DC
11 U18
AS7805DTR-E1
12V to 5V LDO
12 U17
，
U19
PT2328-X-TP$PI5V330AQ$
PI5V330AQX$SGM330A-YQS
$CS43V30
Video Switch
13 U11 STA335BW Audio amplifier
14 U20 SN74LV4052 Audio switch
15 U53
AO4803A
USB power switch
16 U30 HDBF36A8Dc SAW filter
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