|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
Excellent service manual, the only known point of note is the alignment of improvability scanned pages within the pdf page. The resolution is good.
;
I was very glad recieving the service manal from You. Additionaly very fast. Extremaly nice servicing. Thanks very mach! Now my GX-220 working better, than it was made. Alexander from Moscow, Russia/
;
Sweet! I won the item on eBay and couldn't adjust the geometry or even keep a steady picure. This guide has the full schematics (not available anywhere else as far as I could tell), and was a bargain for the wealth of knowledge it contains. I hooked it up to my testing equipment, tweaked a few potentiometers and got it playing videogames in no time. Thanks!
;
It was just what I need to fix my old BMW's CD player. Very convenient also. Thank you.
;
Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
DAC (IC1: UPD6379GR)
The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the melody, chord, bass, and percussion for the right and left channels. The DAC converts the data into analog waveforms and output them to each channel separately.
Synch signal SINC L OUT DAC LSI6 UPD6379GR R OUT CLK SI Word clock LRCK WCKO Bit clock BCKI Data SO DSP LSI1 HG51B277FB Data SI Word clock WCKI Bit clock BCK LRCK SO SCK1 CPU LSI4 GT913F
FILTER BLOCK
Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth the waveforms.
AVCC
2.7 K
To main volume 15 V10 µ
8 � 6 5 +
C472(H)
L
7 4
2
10 K
10 K
10 K 10 µF
R154
Left From DAC
AG M5218APR (1/2) � 2 IC104 � + 2 3
C221B(A)
AG AVCC C472(H)
AG 2.2 K
15 V10 µ
R
1
2
10 K
10 K
C152(H)
10 K
100 K
To main volume
AG
10 µF
Right From DAC
AG
AG
�8�
|
|
|
> |
|
