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Finally, an affordable CD Transport: the Shigaclone story
Finally, an affordable CD Transport: the Shigaclone story
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Old 10th January 2020, 06:51 PM   #8081
Rudy Kazudi is offline Rudy Kazudi  United States
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Somewhere there is a list of the JVC boomboxes that can be converted to Shiga clones, but I can't find it. Does anybody know what's on that list, or whether a JVC RC EZ38 will work?

Thanks.
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Old 13th January 2020, 09:05 PM   #8082
Rudy Kazudi is offline Rudy Kazudi  United States
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Default JVC Boombox Schematics

For what it's worth, here are schematics for the JVC RC-EZ31, 51, 53 and 55.

The earlier link for the EZ31 manual no longer works.
Attached Files
File Type: pdf jvc_rc-ez55B,rc-ez51HB,rc-ez53SE.pdf (716.7 KB, 25 views)
File Type: pdf rcez31a.pdf (1.61 MB, 20 views)
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Old 20th January 2020, 08:03 PM   #8083
Rudy Kazudi is offline Rudy Kazudi  United States
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Default Another Shiga clone alternative?

I recently asked if the JVC EZ38 boombox could be used for a Shiga clone hack, but got no reply. Further investigation shows that the EZ38 boombox uses the Philips SAA7824HL DSP chip. The data sheet for this chip indicates that it is capable of providing output to an external DAC. It looks like there are several options for data output, but what's the right one for sp/dif? And how would it be configured? I'm kind of in over my head here, and am looking for any help I can get.

Here are a few pages from the SAA7824 data sheet and a copy of the EZ38 service manual. The complete SAA7824 data sheet can be accessed here:

SAA7824HL pdf, SAA7824HL description, SAA7824HL datasheets, SAA7824HL view ::: ALLDATASHEET :::
Attached Files
File Type: pdf SAA7824 Data 1.pdf (1.79 MB, 3 views)
File Type: pdf SAA7824 Data 2.pdf (1.12 MB, 1 views)
File Type: pdf jvc_rc-ez38s_sm.pdf (1.39 MB, 1 views)
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Old 21st January 2020, 07:34 PM   #8084
tvicol is offline tvicol  Europe
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Finally, an affordable CD Transport: the Shigaclone story Finally, an affordable CD Transport: the Shigaclone story
Rudy,

To make a Shigaclone you need to look for a boombox with following chips:
- LA9242 for ASP - analog signal processor
- LC78601 for DSP - digital signal processor
- LA6541 for motor driver
- SFP101N-15P or 16P for CD mechanic

At some point in time Sanyo had a great engineering team who designed LA924X & LC7860X combo. With careful implementation these chips make one of the best CD transport.

Regards,
Tibi
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