Re: [Techtoolslist] Help troubleshooting a 9010A
Okay, Been working on the units and I am finally getting somewhere. - I blew U1 on the Display board. Anyone know what chip this is? (its the large 40-pin chip) Marking: P8041A 1210 8423 535419 Intel '77 I confirmed that this was the issue by swapping it out between the displays. Display 1: - Missing the bottom right segment on all digits (I believe its segment 'c' according to the schematic, Figure 8-3). Any idea what would cause this? Display 2: - 10th character sometimes disappears, sometimes is faded, sometimes is fine. I traced that this is controlled by U4 (pin 11) and U8 (pins 2 & 17). I can replace both, but which is the most likely problem? Anyone know where I can get U8 (UDN6118A) chips? Thanks for the help so far. Barry --------------------------------- So I got both systems working, on to the next problem. The display on one is missing a few of the lines (mostly the bottom right ones). any idea where to start? The other, the display flashes random characters and beeps. Thing that ticks me off is that it was mostly working (one character was dim) and I unplugged the connector thinking the power was off. What damage did I do? Barry I meant PDF page 131 Matt On Tue, 26 May 2009 22:18:04 -0700, Matt Rossiter <matt@rossiters.com> wrote:
Some of the Fluke 9010a's (mine for example) might be different than these schematics, but you can look here on pdf page 137. http://arcarc.xmission.com/Test%20Equipment/Fluke/9010A%20Base/9010A%20Servi... 0Manual.pdf You should know how to convert Hex to Binary. HEX-08 -> D7=0 D6=0 D5=0 D4=0 D3=1 D2=0 D1=0 D0=0 If it's reporting BTS 8 is failing - then check the 4116 ram chip responsible for D3 - which is at locate U12. If BTS 12 are failing, it means D3 and D2 are stuck. So check U11 and U12 or their buffers. Matt On Tue, 26 May 2009 21:41:10 -0400, barry2@shilmover.com wrote:
Hooked up the 2nd 9010A. It returns: R/W ERR @ C000 BTS 12 - LOOP? Barry ---------------------- I been having trouble posting to the group... trying again. I have 2 non-working 9010A units. On both they beep once, LEDs flash, then nothing. Hooked up a working 9010A that I borrowed (thanks David). Bus tests fine. RAM returns the following: R/W ERR @ C000 BTS 08 - LOOP? Manual states: If a RAM failure occurs, carefully examine the diagnostic message. The RAM Test is usually sufficient for deducing the failed component directly. It then does not explain how to read the message. :-) I am new to this, so be kind if its a stupid question. I deduced that there is a Read/Write error at C000. How do I "deduce" the failed component? Barry _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Been working on the units and I am finally getting somewhere. - I blew U1 on the Display board. Anyone know what chip this is? (its the large 40-pin chip) Marking: P8041A 1210 8423 535419 Intel '77 I confirmed that this was the issue by swapping it out between the displays.
Intel 8041 microcontroller... It's a mask ROM part, IIRC (I think the 8741 was an EPROM version). It's similar to the 8048, both of which were predecessors to the ubiquitous 8051... (MCS-51 family vs. the MCS-48 family) Unless someone has managed to extract the code and you can locate an 8741 to program it on to, you're probably stuck with just swapping in one from another unit. (At some point, maybe getting that particular MCU decapped to preserve the ROM would be a good idea...)
Display 2: - 10th character sometimes disappears, sometimes is faded, sometimes is fine. I traced that this is controlled by U4 (pin 11) and U8 (pins 2 & 17). I can replace both, but which is the most likely problem? Anyone know where I can get U8 (UDN6118A) chips?
Allegro and Sprague used to make those... You could steal some off of an old Williams pinball VFD driver board, or just type "UDN6118" in on eBay and there will be some there. -Clay _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
That P8041a is none other than your friendly neighborhood Programmable Microcontroller. http://games.rossiters.com/manuals/fluke/Intel-8041A.pdf You can replace that with an 8742 but it needs to be programmed. I don't recommend the 8741 replacement since they seem to be slower than the 8041A and don't function very well - at least that was my experience with replacing the 8041a on the Tape Drive. I put the rom image here. http://games.rossiters.com/manuals/fluke/Fluke-9010a-Display-Rom.BIN If you don't have a programmer that can do these let me know privately. I would dig around the internet, including ebay for the UDN6118A chips. Unicornelectrics carries the 8742. Matt On Thu, 28 May 2009 01:03:53 -0400, barry2@shilmover.com wrote:
Okay, Been working on the units and I am finally getting somewhere. - I blew U1 on the Display board. Anyone know what chip this is? (its the large 40-pin chip) Marking: P8041A 1210 8423 535419 Intel '77 I confirmed that this was the issue by swapping it out between the displays.
Display 1: - Missing the bottom right segment on all digits (I believe its segment 'c' according to the schematic, Figure 8-3). Any idea what would cause this?
Display 2: - 10th character sometimes disappears, sometimes is faded, sometimes is fine. I traced that this is controlled by U4 (pin 11) and U8 (pins 2 & 17). I can replace both, but which is the most likely problem? Anyone know where I can get U8 (UDN6118A) chips?
Thanks for the help so far.
Barry
--------------------------------- So I got both systems working, on to the next problem.
The display on one is missing a few of the lines (mostly the bottom right
ones). any idea where to start?
The other, the display flashes random characters and beeps. Thing that ticks
me off is that it was mostly working (one character was dim) and I unplugged
the connector thinking the power was off. What damage did I do? Barry I meant PDF page 131 Matt On Tue, 26 May 2009 22:18:04 -0700, Matt Rossiter <matt@rossiters.com> wrote:
Some of the Fluke 9010a's (mine for example) might be different than these schematics, but you can look here on pdf page 137.
http://arcarc.xmission.com/Test%20Equipment/Fluke/9010A%20Base/9010A%20Servi...
0Manual.pdf
You should know how to convert Hex to Binary. HEX-08 -> D7=0 D6=0 D5=0 D4=0 D3=1 D2=0 D1=0 D0=0 If it's reporting BTS 8 is failing - then check the 4116 ram chip responsible for D3 - which is at locate U12. If BTS 12 are failing, it means D3 and D2 are stuck. So check U11 and U12 or their buffers. Matt On Tue, 26 May 2009 21:41:10 -0400, barry2@shilmover.com wrote:
Hooked up the 2nd 9010A. It returns: R/W ERR @ C000 BTS 12 - LOOP? Barry ---------------------- I been having trouble posting to the group... trying again. I have 2 non-working 9010A units. On both they beep once, LEDs flash, then nothing. Hooked up a working 9010A that I borrowed (thanks David). Bus tests fine. RAM returns the following: R/W ERR @ C000 BTS 08 - LOOP? Manual states: If a RAM failure occurs, carefully examine the diagnostic message. The RAM Test is usually sufficient for deducing the failed component directly. It then does not explain how to read the message. :-) I am new to this, so be kind if its a stupid question. I deduced that there is a Read/Write error at C000. How do I "deduce" the failed component? Barry _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
I looked at one of my spare 9010a tape modules this morning and noticed it's using an Intel 8741a - so I could be partially wrong that you shouldn't replace 8041a's with 8741a's. The set I bought off ebay just wouldn't operate even though I could program them and they tested ok. Just to be safe I would still go with something a little faster. :) Matt On Thu, 28 May 2009 00:32:07 -0700, Matt Rossiter <matt@rossiters.com> wrote:
That P8041a is none other than your friendly neighborhood Programmable Microcontroller. http://games.rossiters.com/manuals/fluke/Intel-8041A.pdf
You can replace that with an 8742 but it needs to be programmed. I don't recommend the 8741 replacement since they seem to be slower than the 8041A and don't function very well - at least that was my experience with replacing the 8041a on the Tape Drive.
I put the rom image here. http://games.rossiters.com/manuals/fluke/Fluke-9010a-Display-Rom.BIN If you don't have a programmer that can do these let me know privately.
I would dig around the internet, including ebay for the UDN6118A chips. Unicornelectrics carries the 8742.
Matt
On Thu, 28 May 2009 01:03:53 -0400, barry2@shilmover.com wrote:
Okay, Been working on the units and I am finally getting somewhere. - I blew U1 on the Display board. Anyone know what chip this is? (its the large 40-pin chip) Marking: P8041A 1210 8423 535419 Intel '77 I confirmed that this was the issue by swapping it out between the displays.
Display 1: - Missing the bottom right segment on all digits (I believe its segment 'c' according to the schematic, Figure 8-3). Any idea what would cause this?
Display 2: - 10th character sometimes disappears, sometimes is faded, sometimes is fine. I traced that this is controlled by U4 (pin 11) and U8 (pins 2 & 17). I can replace both, but which is the most likely problem? Anyone know where I can get U8 (UDN6118A) chips?
Thanks for the help so far.
Barry
--------------------------------- So I got both systems working, on to the next problem.
The display on one is missing a few of the lines (mostly the bottom right
ones). any idea where to start?
The other, the display flashes random characters and beeps. Thing that ticks
me off is that it was mostly working (one character was dim) and I unplugged
the connector thinking the power was off. What damage did I do? Barry I meant PDF page 131 Matt On Tue, 26 May 2009 22:18:04 -0700, Matt Rossiter <matt@rossiters.com> wrote:
Some of the Fluke 9010a's (mine for example) might be different than these schematics, but you can look here on pdf page 137.
http://arcarc.xmission.com/Test%20Equipment/Fluke/9010A%20Base/9010A%20Servi...
0Manual.pdf
You should know how to convert Hex to Binary. HEX-08 -> D7=0 D6=0 D5=0 D4=0 D3=1 D2=0 D1=0 D0=0 If it's reporting BTS 8 is failing - then check the 4116 ram chip responsible for D3 - which is at locate U12. If BTS 12 are failing, it means D3 and D2 are stuck. So check U11 and U12 or their buffers. Matt On Tue, 26 May 2009 21:41:10 -0400, barry2@shilmover.com wrote:
Hooked up the 2nd 9010A. It returns: R/W ERR @ C000 BTS 12 - LOOP? Barry ---------------------- I been having trouble posting to the group... trying again. I have 2 non-working 9010A units. On both they beep once, LEDs flash, then nothing. Hooked up a working 9010A that I borrowed (thanks David). Bus tests fine. RAM returns the following: R/W ERR @ C000 BTS 08 - LOOP? Manual states: If a RAM failure occurs, carefully examine the diagnostic message. The RAM Test is usually sufficient for deducing the failed component directly. It then does not explain how to read the message. :-) I am new to this, so be kind if its a stupid question. I deduced that there is a Read/Write error at C000. How do I "deduce" the failed component? Barry _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
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Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
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participants (3)
-
barry2＠shilmover.com -
Clay Cowgill -
Matt Rossiter