Boss - CE-5 Chorus Ensemble  [schematic]

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Boss - CE-5 Chorus Ensemble

Postby Sweetalk » 08 Nov 2010, 17:45

Does anyone have the Boss CE-5 schematic?. I have to repair two and there is one transistor missing (Q3 and Q4).

The main IC is a MN3007, MN3101 for clock
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Re: Boss CE-5

Postby Güero 2.0 » 08 Nov 2010, 18:15

Sweetalk wrote:Does anyone have the Boss CE-5 schematic?. I have to repair two and there is one transistor missing (Q3 and Q4).

The main IC is a MN3007, MN3101 for clock




http://www.eserviceinfo.com/downloadsm/ ... _CE5T.html
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Re: Boss CE-5

Postby Sweetalk » 08 Nov 2010, 19:56

Güero 2.0 wrote:
Sweetalk wrote:Does anyone have the Boss CE-5 schematic?. I have to repair two and there is one transistor missing (Q3 and Q4).

The main IC is a MN3007, MN3101 for clock




http://www.eserviceinfo.com/downloadsm/ ... _CE5T.html


Thanks a lot!, but I have a different board version, with MN3007.

The board is : CE-5 MT BOARD ASSY 7528052000
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Re: Boss CE-5

Postby Güero 2.0 » 08 Nov 2010, 20:55

Sweetalk wrote:
Güero 2.0 wrote:
Sweetalk wrote:Does anyone have the Boss CE-5 schematic?. I have to repair two and there is one transistor missing (Q3 and Q4).

The main IC is a MN3007, MN3101 for clock




http://www.eserviceinfo.com/downloadsm/ ... _CE5T.html


Thanks a lot!, but I have a different board version, with MN3007.

The board is : CE-5 MT BOARD ASSY 7528052000



Guts, please!
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Re: Boss CE-5

Postby fws » 12 Nov 2010, 06:51

What you have is an older analog version, since october 2001 all Boss BBD based efects switched to digital solutions. This is actualy hinted in warning on first page of that service manual.

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Re: Boss CE-5  [schematic]

Postby lolbou » 12 Nov 2010, 08:23

Here the schem with the BBDs...
CE-5 (1).pdf
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Re: Boss CE-5

Postby Sweetalk » 17 Nov 2010, 15:16

Thanks a lot!
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Re: Boss - CE-5

Postby roseblood11 » 14 Oct 2012, 00:23

anyone got a layout for the analogue version?
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Re: Boss CE-5

Postby Andy2No » 07 Dec 2018, 17:03

fws wrote:What you have is an older analog version, since october 2001 all Boss BBD based efects switched to digital solutions. This is actualy hinted in warning on first page of that service manual.


Yep. That first link shows the main chip is the ES56028S ECHO SOUND Processor

https://www.digchip.com/datasheets/part ... 56028S.php

- as in the current Boss CEB-3.

I'm a bit disappointed to find they kept using the names of the classic BBD designs, for their digital effects.

It makes buying one used a gamble too, unless you can convince the seller to take it apart and take pictures of the PCB.
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