Screen 8600 EEPROM Writing Error

[gsherrold]

Hello friends,

I'm facing the following message initializing my PT-R 8600 (old model) machine:
Writing error on EEPROM

Does anybody know what might be wrong?
Thanks

 

[schenkadere]

could be a bad EEPROM chip on the board

 

[gsherrold]

could be a bad EEPROM chip on the board

Hello schenkadere,

Thanks for your reply.
I have already changed the EEPROM chip from the CPU board and nothing, the problem still occurs.

 

[ansoft]

Would you please write the exact number of the error?

 

[chock]

Dear Sir:

Hi hope you are well

I must remember the Memories: E2PROM, or PROM OR UVPROM etc that are NON VOLATILE device, Not always fails for itself.
They receive the Information from CPU(central processor Unit) or Microprocessor(they have internal two Memories 1) User +2) Storage).
The CPU, execute enesimal repetition Self test, any Milesimal seconds.

At the same time; You must test the Power supply to the CPU and Clock, since if some of them are Faulty all will be Interrupt.
However i must Recomend you the following:

1) Perform a visual inspection : look for loose and broken wires, improperly seated connectors, loose or broken wires
misset switch, missing jumpers. and so on.
Chech for obviously damaged component(components burned or discolore due to overheating);

2) Reseating Boards and components:
Edge connectors are a common souorce of problems. Power down the system and remove the PC boards. Examine the edge connector
for contamination and clean with contacts cleaner contacts. Reseat any loose components 9suc as scoketed ICs) . Reseat the
boards and power up.

3) Power supply checks:
Check the power supply for missing voltages and voltages out of spec. A digital multimieter DMM can be necessary, as
voltage specifications are quite tight: logic supplies for example: must be within + 0.5 percent of 5Vdc. All the
multiple supplies and all must be checked.

4) Board swapping:
Board swapping involves the substitutiono of a known godd board for a suspect one.


5) Clock for CPU:
Check the frecuency with frequency counter or a DMM included frecuency counter( like Fluke DMM)


6)Reset CPU:
reset cpu see the attached schematic.

Let me know
Blessing
[email protected]
Cell+WhatsApp:+50588611441

 

[gsherrold]

Would you please write the exact number of the error?

Please find bellow the whole message error:
E4d31: Expoure head error
Writing error on EEPROM

Thanks

 

[gsherrold]

Dear Sir:

Hi hope you are well

I must remember the Memories: E2PROM, or PROM OR UVPROM etc that are NON VOLATILE device, Not always fails for itself.
They receive the Information from CPU(central processor Unit) or Microprocessor(they have internal two Memories 1) User +2) Storage).
The CPU, execute enesimal repetition Self test, any Milesimal seconds.

At the same time; You must test the Power supply to the CPU and Clock, since if some of them are Faulty all will be Interrupt.
However i must Recomend you the following:

1) Perform a visual inspection : look for loose and broken wires, improperly seated connectors, loose or broken wires
misset switch, missing jumpers. and so on.
Chech for obviously damaged component(components burned or discolore due to overheating);

2) Reseating Boards and components:
Edge connectors are a common souorce of problems. Power down the system and remove the PC boards. Examine the edge connector
for contamination and clean with contacts cleaner contacts. Reseat any loose components 9suc as scoketed ICs) . Reseat the
boards and power up.

3) Power supply checks:
Check the power supply for missing voltages and voltages out of spec. A digital multimieter DMM can be necessary, as
voltage specifications are quite tight: logic supplies for example: must be within + 0.5 percent of 5Vdc. All the
multiple supplies and all must be checked.

4) Board swapping:
Board swapping involves the substitutiono of a known godd board for a suspect one.


5) Clock for CPU:
Check the frecuency with frequency counter or a DMM included frecuency counter( like Fluke DMM)


6)Reset CPU:
reset cpu see the attached schematic.

Let me know
Blessing
[email protected]
Cell+WhatsApp:+50588611441

Thanks, I will try all of these.

 

[chock]

ok
Let me know
Blessing
[email protected]
Cell+WhatsApp:+50588611441

 

[ansoft]

Please check the head CPU board or the driver. Certainly reseat all the cables. Luck!

 

[chock]

Did you sir??
Let me know
Blessing
[email protected]
Cell+WhatsApp:+50588611441