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Service Manual

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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of CASIO CTK630 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 8 (click to view)
Pin No. 50 58 60 61 62, 66, 70, 74, 78 63, 67, 71, 75, 79 64, 65, 68, 69, 72, 73, 76, 77

Terminal VSS3 EA13 EWEB EA14 VSS2 VDD2 PA0 ~ PA7

In/Out In Out Out Out In In Out Ground (0 V) source

Function Not used Write enable signal output for the effect RAM Not used Ground source +5 V source LED segment signal output

DAC (IC102: 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 IC102 UPD6379GR R OUT SI Word clock LRCK WCKO Bit clock CLK Data SO DSP LSI101 HG51B227FB Data 1K SI Word clock WCKI LRCK Bit clock BCKI 47K 22K BCK SO SCK1 CPU LSI105 UPD912GF-3BA

Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth the waveforms.
AVDD AVDD 2SC1740SQ 2SC1740SQ 1K 1K 1K 50V0.22µ


From the DAC

To main volume
10V22µ 470 C333(H) AG AG AG



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Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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