Casio CZ/ VZ/ FZ - Pro Series

There is an old modification out there that uses the APO switch to access all 32 sounds on a cartridge. I did it to both of my CZ-101s, and it works great!
Mark Rauch
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On Fri, 12/23/16, Daniel Forró danforcz@... [CZsynth] <CZsynth@...m> wrote:

 Subject: Re: [CZsynth] CZ1000
 To: CZsynth@yahoogroups.com
 Date: Friday, December 23, 2016, 7:48 AM
 
 
  
 
 
 
   
 
 
     
       
       
       OK, I will take some
 pictures.
 Today I have
 opened it and start to disassembly it. It's not so easy
 as boards are connected by flat plastic cables which are
 soldered on both ends... grrrrr... so unpleasant and service
 unfriendly. Similar way as on cheap Casio portables from
 that times - I did cleaning and repairs of my MT65... at
 least they have used there flat cables with relatively
 thick wires inside. Here it's much more fragile, just
 thin foil and inside metal traces. I have to be very careful
 not to break some. If so, better to desolder it and use
 standard wires. The reason for this is they wanted to save
 money...that's why there are no multi pin
 connectors.
 Inside I
 have found some rusty screws, and also some pieces of rust
 on some metal parts. Will clean everything after full
 disassembly.
 I
 couldn't find any problem with power connector,
 there's no cold solder, no cracks... Probably just the
 connector needs good cleaning inside, and adjusting the
 contact. High humidity here in Japan during summer is guilty
 for the oxidation...
 Also contacts for cartridge had
 green color from oxidation, I had cleaned it very carefully
 with fine sand paper.
 Another problem was with cover of
 cartridge slot. It was fixed inside with transparent sticker
 tape, and the reason was that spring which should keep it
 closed was broken. Evidently previous owner didn't use
 cartridge. So I made new spring from guitar string, works
 perfectly now. I have RAM-3 cartridge, originally for my
 CZ3000 but there it can be used only for data backup. CZ1000
 offers direct access to 16 programs so I will use it now
 with this instrument, it's more flexible. Still I have
 another rare cartridge which offers 4 banks.
 Keyboard is quite OK, it doesn't
 need cleaning.
 So now
 I have to order LED display and replace the original one. It
 will take some time...
 Daniel Forro
 
 On Dec 24, 2016, at
 12:26 AM, Michael Lim raffles1968@...
 [CZsynth] wrote:
 Very interesting! Could you post pics of your
 adventures as you try to "revive" this vintage
 keyboard?
 RegardsMichael
 
 On Friday, December 23, 2016, 3:23 PM,
 Daniel Forró danforcz@... [CZsynth]
 <CZsynth@yahoogroups.com>
 wrote:Today
 I have found a nice looking CZ1000 like a new one in the
 nearest 
 recycle shop, in junk department proclaimed as
 non working. Price was 
 4.6 USD, so I couldn't leave it there.
 
 Using proper adapter at home I
 could make it work on the first switch 
 on. I'm quite sure that instruments have a
 soul and can feel they are 
 in good hands. So far so good.
 
 Everything is OK, but power
 connector board is probably somehow 
 moving, or there's a cold contact on the
 connector itself - when I 
 move with it, sometimes instrument switches
 off. Opening the 
 instrument will probably take more time than
 the repair :-)
 
 There's
 a small coin battery in the holder inside the battery 
 compartment, it looks like previous owner did
 this modification to 
 keep data when power off. I don't like
 similar amateur looking mods so 
 will think twice if to leave it there or
 remove.
 
 The next step will
 be replacing the display for modern one with LED 
 backlight as I did with my CZ3000.
 
 Merry Christmas!
 
 Daniel Forro
 
 
 
 
 
     
      
 
     
     
 
 
 
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