hard copy = paper (in a ring binder)
From: "janoch23@... [xl7]"
To: xl7@yahoogroups.com
Sent: Sunday, 26 April 2015, 17:42
Subject: Re: [xl7] Re: LED specs or service manual
To: xl7@yahoogroups.com
Sent: Sunday, 26 April 2015, 17:42
Subject: Re: [xl7] Re: LED specs or service manual
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---In xl7@yahoogroups.com, wrote :
Are these scans or paper?
---In xl7@yahoogroups.com, wrote :
I have a hard copy of the E4 series technical manuals including the EIV, e64, E4K, E4X, e6400, Esynth rack, E-Synth Keyboard, and EOS Ultra series. Also included are the option board schematics. THe whole thing is several hundred A3 pages in a ring binder (with some A4 for the technical descriptions). I've not seen a P2K or command station technical manual.
Since the Ultra series could use and P2k series ROMs I would think that the schematics have a fair bit of overlap though they would not be identical by any means. There are 24 pages for the E4 ultra rack 2 main board which is drawing SK10485. I guess if I look into my E4XT or E5000 that number should appear on the motherboard somewhere.
The differences for the PX-7/XL-7/MP-7 is that they use a different processor to the P2k and E4 ultra series (a CF5307 compared with a CF5206) and with the newer processor there were other changes because it was 3.3 volts (instead of 5 volts) and so all of the support components were changed. Also the CF5307 supports SDRAM so there is an SDRAM chip soldered onto the motherboard for command stations rather than the DRAM SIMM that the others use. Finally the FLASH memory for the OS on an Ultra is on a SIMM whereas both the P2k and command stations have that soldered on the motherboard.
So the schematics I have are close to the P2K and related to the command stations.
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