Schematic/Service manual needed for EE Tools TopMax Programm

[Bob Armstrong]

I picked up an EE Tools TopMax universal device programmer at the flea
market recently. It appears to be in fine shape, but it fails the
hardware test in the Windows software. Some functions seem to work OK
(e.g. the 74xx logic test/identifier), but I haven't been able to
successfully program a 27C256 EPROM, so I suppose it really is faulty.

I opened it up and there's no obvious damage inside, and the +5/+12
power supply voltages are OK. The PC boards inside have a 1998
copyright date on them, BTW.

Does anyone have any schematics and/or service information for this
programmer? These guys cost about $1K new, so I hate to throw it away
with out at least trying to fix it.

Thanks,
Bob Armstrong

 

[PJ]

"Bob Armstrong" <bob@jfcl.com> wrote in message
news:dc5428e3.0405112002.13cb3836@posting.google.com...

I picked up an EE Tools TopMax universal device programmer at the flea
market recently. It appears to be in fine shape, but it fails the
hardware test in the Windows software. Some functions seem to work OK
(e.g. the 74xx logic test/identifier), but I haven't been able to
successfully program a 27C256 EPROM, so I suppose it really is faulty.

I opened it up and there's no obvious damage inside, and the +5/+12
power supply voltages are OK. The PC boards inside have a 1998
copyright date on them, BTW.

Does anyone have any schematics and/or service information for this
programmer? These guys cost about $1K new, so I hate to throw it away
with out at least trying to fix it.

Thanks,
Bob Armstrong

Have you asked EETools? http://www.eetools.com . I also have one of these
I got at a swap meet.....Paul

 

[Piotr Piatek]

On 11 May 2004 21:02:37 -0700, bob@jfcl.com (Bob Armstrong) wrote:

Does anyone have any schematics and/or service information for this
programmer?

I don't have the full schematic, but I have spent some time to analyze
this programmer to be able to implement my own programming algorithms.

The programmer contains 4 programmable power supplies built with the
MAX506 DAC and the L165 power opamp:
http://www.pisi.com.pl/piotr433/supply.gif

The internal 93C46 EEPROM contains, besides the HW version and the
serial number, four calibration tables for each channel of the DAC.

Each socket pin can be configured as:
1. logical input/output with selectable logical output level of ca.
5V/3V/2V and a pull-up/pull-down resistor
2. ground through a MOS switch TPIC6A259
3. ground through a relay (on few selected pins)
4. power supply output through a BD678 transistor
5. power supply output through a relay (on few selected pins)
6. programming voltage output through an UDN2987A switch
Schematic of a pin driver:
http://www.pisi.com.pl/piotr433/driver.gif

The reset circuit:
http://www.pisi.com.pl/piotr433/reset.gif

List of internal connections:
http://www.pisi.com.pl/piotr433/schemat.txt

Hope this helps a little

Piotr