Casio CZ/ VZ/ FZ - Pro Series

I would start as usually:
- check if all fuses are OK (if there are some)
- check PSU voltages if all are on the spec
- if necessary change electrolytic caps in PSU
- check, clean and reseat all connectors
- reseat all chips in sockets (OS Eprom for example ?)

If this doesn't help, then there's more problems somewhere in hardware  
or software which would need more checking...

Daniel Forro


On 11 Dec, 2014, at 4:59 AM, db0451@... [CZsynth] wrote:

>
>
> Hello all,
>
> Looking for advice from FZ-10M owners. I have bought one that needs  
> repair - does not start, only showing a screen light and (sometimes)  
> 2 red LEDs.
>
> Not got much in the way of diagnostic equipment but am happy to try  
> if I get plausible suggestions. Service manual for FZ-1 only  
> describes the diagnostic program IF it loads in the first place, but  
> I don't seem to get that far.
>
> Doubt it's just the LCD screen, but to check, how would I go about  
> testing buttons or sound without being able to see what the screen  
> says? Anything simple that will produce a sound or change some LEDs  
> if the whole thing isn't busted.
>
> Otherwise, yeah, hopefully someone knows that pattern of failure,  
> and can suggest what needs replaced, tested, etc.
>
> Thanks in advance, really hope I can get this fixed and get those  
> filters blasting!
>
> DB