Sanyo LED-32XR10FH, Service Manual

Video route: digital video signal is sent into main chip 

MSD209GL 

for decoding and video processing 

after demultiplexing, then LVDS signal will be outputted to drive display panel; 

Audio route: digital audio signal will be sent into main chip 

MSD209GL 

for decoding and audio   

processing after demultiplexing, then dual-sound-track analog audio signal (stereo) is sent to earphone 
amplifier 

BH3547F

 to be amplified after the processes of preamplification, acoustic effect processing and 

volume control by main chip 

MSD209GL

, then one is sent to earphone jack, the other is sent to audio 

power amplifier 

R2A15112FP 

(D class)

to

be amplified and then drive speakers. 

3

、

  AV input signal flow

AV video signal is sent into main chip 

MSD209GL 

to be processed by modules of video decoding, 

deinterlacing, video processing and zoom, then LVDS signal will be outputted to drive display panel; 

AV audio signal is sent into main chip 

MSD209GL 

for acoustic effect processing and volume control 

after the processing of voltage division, impendence matching and AC coupling, then it is sent to 
earphone amplifier 

BH3547F

 to be amplified, one is sent to earphone jack, the other is sent to audio 

power amplifier 

TDA7266SA 

(AB class)

to

be amplified and then drive speakers. 

4

、

D-SUB/YPbPr

input signal flow

D-SUB/YPbPr video signal is sent into main chip 

MSD209GL 

to be processed by modules of A/D 

conversion, video decoding, deinterlacing, video processing and zoom, then LVDS signal will be 
outputted to drive display panel; 

D-SUB/YPbPr audio signal is sent into main chip 

MSD209GL 

for acoustic effect processing and   

volume control after the processing of voltage division, impendence matching and AC coupling, then it is 
sent to earphone amplifier 

BH3547F

 to be amplified, one is sent to earphone jack, the other is sent to  

audio power amplifier 

R2A15112FP

 (D class)

to

be amplified and then drive speakers. 

5

、

HDMI input signal flow

HDMI video signal is sent into main chip 

MSD209GL 

to be processed by modules of video decoding, 

video processing and zoom, then LVDS signal will be outputted to drive display panel; 

HDMI audio signal is sent into main chip 

MSD209GL 

for audio processing, preamplification, acoustic 

effect processing and volume control, then it is sent to earphone amplifier 

BH3547F

 to be amplified, one 

is sent to earphone jack, the other is sent to audio power amplifier 

R2A15112FP

 (D class)

to

be amplified 

and then drive speakers. 
6

、

AV

input signal flow

Current active AV video signal is sent into main chip 

MSD209GL 

for video coding, then it is amplified 

by peripheral video amplified circuits and then outputted; 
        Current active AV audio signal is sent into main chip 

MSD209GL 

for preamplification, acoustic effect 

processing and volume control, then it is sent to operation amplifier to be amplified and then outputted. 
7

、

SPDIF

input signal flow

Current active AV audio signal is sent into main chip 

MSD209GL 

for acoustic effect processing, 

volume control and digital audio coding, then it is outputted. 
8

、

MEMC

input signal flow

Current active AV video signal is sent into main chip 

MSD209GL 

for video coding, then LVDS signal 

is outputted to 

MEMC

 chip 

6M20S

 for frame insertion processing, and then frequency multiplication LVDS 

signal is outputted to drive display panel.