For Sale HP-97 Test-Bench

[ignazio]

A near complete HP-97 Test-Bench with all the chip socketed. Lack of thermal printer head. For sale at best offer.

[Namir]

Does the card reader work? Any keys lack the expected key snap? Do all the LED segments work fine?

Thanks,

Namir

[ignazio]

Hi Namir,
the following are the calculator conditions.

- Keyboard: ok
- Display: ok
- Card reader: ok
- Logic: ok ( new bugless ROM 550/551)
- Printer: ok but with some thermal resistors bad and lack of the tear bar
- Case: complete with battery door and latches
- All the chip in main board socketed
- Cathode driver and 2 anode driver socketed
- card reader sense apmplifier socketed
- all chip in printer PCB socketed

Thanks for your interest.
regards

Ignazio

[HP-Collection]

Maybe some images my help you selling the test bench.

[ignazio]

Hi,
our friend is right, so I've added some image of the calculator.
This is the first lot of pictures:

[attachment=596][attachment=595][attachment=594][attachment=597][attachment=598]

[ignazio]

... and this is the final lot:

Ignazio

[attachment=599][attachment=600][attachment=601][attachment=602]

[walter b]

Please forgive me, but what's the difference to a usual HP-97 calculator? Why do you call it a 'HP-97 Test-Bench'? TIA for enlightenment.

d:-?

[Sylvain Cote]

(04-28-2014 07:51 PM)walter b Wrote:  Please forgive me, but what's the difference to a usual HP-97 calculator? Why do you call it a 'HP-97 Test-Bench'? TIA for enlightenment.

d:-?

My understanding is all the chips are socketed instead of being soldered on the board.

Sylvain

[Thomas Klemm]

(04-28-2014 07:51 PM)walter b Wrote:  Please forgive me, but what's the difference to a usual HP-97 calculator?

(04-18-2014 06:38 AM)ignazio Wrote:  - All the chip in main board socketed
- Cathode driver and 2 anode driver socketed
- card reader sense apmplifier socketed
- all chip in printer PCB socketed

Compare these images:



Cheers
Thomas

[ignazio]

(04-28-2014 07:51 PM)walter b Wrote:  Please forgive me, but what's the difference to a usual HP-97 calculator? Why do you call it a 'HP-97 Test-Bench'? TIA for enlightenment.

Thanks for the reply posted by Thomas and Sylvain.
Walter,
the only valid reason to install the sockets for all the chip in a calculator, is to permit at the owner to test all the component without stress the PCB and the chip with too much heat from the solder iron, but primarily is to test the components on a machine certainly functional.

In this HP-97, you can test:

ACT (1820-1596) from: HP 21,22,25,25C 29C,19C,67,91,92,95C,97 AND 97S;
ACT (1820-1952) from: HP 19C, 97,97S;
CRC (1820-1751) from: HP 67, 97,97S;
PIK (1820-1680) from: HP 19C, 97,97S;
CATHODE DRIVER (1820-1629) from: HP 19C, 91, 92, 95C, 97 and 97S;
RAM/ROM (1818-0226, 1818-0228, 1818-0550,1818-0551) from HP 67,97,97S;
MOTOR SPEED CNTRL (1810-0236) from: HP 10A,19C,91,92,95C,97 and 97S.
SENSE AMPL. (1826-0322) from: HP 67, 97, 97S and HP-82104A (HP-41 CR)

I believe that may be useful, or not?

Regards

Ignazio

[aurelio]

(04-29-2014 08:58 AM)ignazio Wrote:  

(04-28-2014 07:51 PM)walter b Wrote:  Please forgive me, but what's the difference to a usual HP-97 calculator? Why do you call it a 'HP-97 Test-Bench'? TIA for enlightenment.

Thanks for the reply posted by Thomas and Sylvain.
Walter,
the only valid reason to install the sockets for all the chip in a calculator, is to permit at the owner to test all the component without stress the PCB and the chip with too much heat from the solder iron, but primarily is to test the components on a machine certainly functional.

In this HP-97, you can test:

ACT (1820-1596) from: HP 21,22,25,25C 29C,19C,67,91,92,95C,97 AND 97S;
ACT (1820-1952) from: HP 19C, 97,97S;
CRC (1820-1751) from: HP 67, 97,97S;
PIK (1820-1680) from: HP 19C, 97,97S;
CATHODE DRIVER (1820-1629) from: HP 19C, 91, 92, 95C, 97 and 97S;
RAM/ROM (1818-0226, 1818-0228, 1818-0550,1818-0551) from HP 67,97,97S;
MOTOR SPEED CNTRL (1810-0236) from: HP 10A,19C,91,92,95C,97 and 97S.
SENSE AMPL. (1826-0322) from: HP 67, 97, 97S and HP-82104A (HP-41 CR)

I believe that may be useful, or not?

Regards

Ignazio

We apreciated your job no far in time here and I renew my compliments for brilliant idea

[Paul Berger (Canada)]

I also have a 97 with all the chips on the main board socketed it was very helpful in troubleshooting a 67, it allowed me to isolate the failure down to one of two ROMs, and I also used it to verify the chips in a 97 I repaired for another gentleman recently. While testing the chips for the 97 I also verified that the PIK in my test 97 is indeed flakey, it does not print properly until the calculator has been on for about 10 mins.

[ignazio]

Hi,
thanks a lot for the interest but I've just sold the calculator.