+videofx Posted February 16, 2023 Share Posted February 16, 2023 I just received an Atari Indus disk drive. When powered on it goes thought the C diags quick the goes to track 00 for a few seconds just like the manual says. But after track 00 it goes to track 37. According to the manual it should go to track 39 Any ideas how to fix it? THanks! Quote Link to comment Share on other sites More sharing options...
Peri Noid Posted February 16, 2023 Share Posted February 16, 2023 Sounds like a misalligned track 0 sensor that actually triggers at track 2 rather than 0. Does this drive read any known good disk? Quote Link to comment Share on other sites More sharing options...
+MrFish Posted February 16, 2023 Share Posted February 16, 2023 You can get the service manual and diagnostic disk here: Hardware Computerist - Indus GT Quote Link to comment Share on other sites More sharing options...
JR> Posted February 16, 2023 Share Posted February 16, 2023 Are you sure there aren't just a couple of segments of the 7-segment display not illuminating? 1 Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted February 16, 2023 Share Posted February 16, 2023 (edited) check power supply, correct voltage and current and is DC. Make sure display is not faulty. clean the rails and lube, lube spindle bearings, while you are in there clean and lube whatever else might need it. Blow out all sensors in multiple directions and give them a good look. iNdus drives use the tandon mech just like everything else. there will be slight noise and excessive wear if it isn't serviced. Chances are that after a good clean and lube with drive head exercise, cleaning of the head, using a known good DSDD disk, (not HD) it will be fine again. If not you will enter the FSM and start checking for weak an marginal components. Last item would be the stepper motor. sometime the magnets come apart or loose and can be repaired. A good clean up after that and they are back in business. the other oddball fix is when there is a bad spot on the stepper. turning the stepper 180 degrees sometimes can avoid the bad spot. stepper band loose, tighten the screw. These last three will require re alignment of the head when done. So calibration and alignment should be verified along the way, and the drive should be exercised quite a bit to veryify operation. if all electronics are good, and all else has failed, rebuild or replace the mech. Edited February 16, 2023 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
+videofx Posted February 17, 2023 Author Share Posted February 17, 2023 19 hours ago, Peri Noid said: Sounds like a misalligned track 0 sensor that actually triggers at track 2 rather than 0. Does this drive read any known good disk? Yes it does. It boots every disk I have tried. It will format single density. Next I will try double density. Quote Link to comment Share on other sites More sharing options...
+videofx Posted February 17, 2023 Author Share Posted February 17, 2023 18 hours ago, JR> said: Are you sure there aren't just a couple of segments of the 7-segment display not illuminating? That is a good question. Is there a disk editor or piece of software that will allow me to go to track 39 and we can find out. Quote Link to comment Share on other sites More sharing options...
_The Doctor__ Posted February 17, 2023 Share Posted February 17, 2023 (edited) If track zero sensor was off by 2 tracks, you would not be booting any of the different density disk types on the iNdus You stated it's booting everything so that rules out the sensor. Edited February 17, 2023 by _The Doctor__ Quote Link to comment Share on other sites More sharing options...
Peri Noid Posted February 17, 2023 Share Posted February 17, 2023 4 hours ago, videofx said: Yes it does. It boots every disk I have tried. It will format single density. Next I will try double density. Then it looks like a possible problem with the display. Does it properly show tracks like 9 or 8? 4 hours ago, _The Doctor__ said: If track zero sensor was off by 2 tracks, you would not be booting any of the different density disk types on the iNdus You stated it's booting everything so that rules out the sensor. Yes, that's exactly why I asked, if it booted any good disk. And it did. Quote Link to comment Share on other sites More sharing options...
+videofx Posted March 8, 2023 Author Share Posted March 8, 2023 Thanks everyone for the help. after doing disk drive maintenance on the drive, everything is working perfectly! The only issue is there is a segment of the LED's missing (doesn't light). Anyone know of a part to replace them and how to replace them? Thanks! Quote Link to comment Share on other sites More sharing options...
xrbrevin Posted March 8, 2023 Share Posted March 8, 2023 (edited) good job resurrecting the drive! youll need to identify if the display is common anode or common cathode otherwise, its just match the dimensions and pins Edited March 8, 2023 by xrbrevin syntax error Quote Link to comment Share on other sites More sharing options...
+videofx Posted March 10, 2023 Author Share Posted March 10, 2023 On 3/8/2023 at 9:24 AM, xrbrevin said: good job resurrecting the drive! youll need to identify if the display is common anode or common cathode otherwise, its just match the dimensions and pins Thanks! As soon as I receive my SRAM Charger and install it I will take a look at the LEDs and see what I have. I would have thought by now that many people would have replaced these by now. Quote Link to comment Share on other sites More sharing options...
macsonny Posted March 11, 2023 Share Posted March 11, 2023 On 3/10/2023 at 1:36 PM, videofx said: Thanks! As soon as I receive my SRAM Charger and install it I will take a look at the LEDs and see what I have. I would have thought by now that many people would have replaced these by now. I purchased some of the segments from a supplier in Germany today as I have the same problem. I bought 10 so will have a few extra. let me know if you are interested. Quote Link to comment Share on other sites More sharing options...
+Larry Posted March 11, 2023 Share Posted March 11, 2023 @macsonny could you please post some details of where you found these, and perhaps a couple of pictures, too? IIRC, I have one Indus with the same issue. Quote Link to comment Share on other sites More sharing options...
MVladimir Posted March 11, 2023 Share Posted March 11, 2023 (edited) 5 hours ago, Larry said: ....where you found these.........I have one Indus with the same issue. Search eBay for HD1075R. Edited March 11, 2023 by MVladimir 1 Quote Link to comment Share on other sites More sharing options...
macsonny Posted March 11, 2023 Share Posted March 11, 2023 10 hours ago, Larry said: @macsonny could you please post some details of where you found these, and perhaps a couple of pictures, too? IIRC, I have one Indus with the same issue. Photos and description right here: I've found replacement LED segments and waiting on them to arrive from Germany. Will replace and provide description here when done. 1 Quote Link to comment Share on other sites More sharing options...
+Larry Posted March 12, 2023 Share Posted March 12, 2023 Thanks, but I meant pictures of the display, inside the drive when you replace the segment. Quote Link to comment Share on other sites More sharing options...
MVladimir Posted March 12, 2023 Share Posted March 12, 2023 1 hour ago, Larry said: Thanks, but I meant pictures of the display, inside the drive when you replace the segment. This is a front panel with indicators, LED's and buttons from LDW Super 2000 / California Access (CA-2001). Both are clone of Indus GT with design modification. (Hope that in original Indus GT you see something very-very similar when you open it for replacement broken parts) Now is a process to renew this panel, it was found inside LDW drive, but it from CA-2001. LED's not placed on their "windows" so I move them to more "right" positions. Indicators here is OK, you can see the PCB tracks "as-is" on photo. pcb design is different in clones, but schematics is the same. I don't have original Indus GT, but hope that clones is a little modifications of it. 1 1 Quote Link to comment Share on other sites More sharing options...
+Larry Posted March 12, 2023 Share Posted March 12, 2023 Outstanding! Thanks to both of you for the photos. Quote Link to comment Share on other sites More sharing options...
+videofx Posted March 12, 2023 Author Share Posted March 12, 2023 Ordered 5 LEDs replacements for my Indus I also will upgrade the firmware to 1.2 since my drive has 1.1 so I can run my SRAM Charger It takes 15 minutes to tear down the drive to get to the LED board and remove it. It takes 30 minutes to reassemble. So I will let you know how it goes once I get the new LEDs 2 Quote Link to comment Share on other sites More sharing options...
macsonny Posted March 13, 2023 Share Posted March 13, 2023 19 hours ago, MVladimir said: This is a front panel with indicators, LED's and buttons from LDW Super 2000 / California Access (CA-2001). Both are clone of Indus GT with design modification. (Hope that in original Indus GT you see something very-very similar when you open it for replacement broken parts) Now is a process to renew this panel, it was found inside LDW drive, but it from CA-2001. LED's not placed on their "windows" so I move them to more "right" positions. Indicators here is OK, you can see the PCB tracks "as-is" on photo. pcb design is different in clones, but schematics is the same. I don't have original Indus GT, but hope that clones is a little modifications of it. Exact same for my drive. I'll take some photos when I go through the repair process to share with everyone. The LED segments are a little smaller so the layout of the pins is interesting. Quote Link to comment Share on other sites More sharing options...
macsonny Posted March 13, 2023 Share Posted March 13, 2023 12 hours ago, videofx said: Ordered 5 LEDs replacements for my Indus I also will upgrade the firmware to 1.2 since my drive has 1.1 so I can run my SRAM Charger It takes 15 minutes to tear down the drive to get to the LED board and remove it. It takes 30 minutes to reassemble. So I will let you know how it goes once I get the new LEDs Same here 🙂 Interesting one of my Indie drive ROMs wasn't an EEPROM - it was a hard wired chip. Isn't that a bit strange? Quote Link to comment Share on other sites More sharing options...
+videofx Posted March 13, 2023 Author Share Posted March 13, 2023 7 hours ago, macsonny said: Same here 🙂 Interesting one of my Indie drive ROMs wasn't an EEPROM - it was a hard wired chip. Isn't that a bit strange? Wow, that could have been. prototype Everyone I have seen has been a TI2732 EPROM Quote Link to comment Share on other sites More sharing options...
macsonny Posted March 14, 2023 Share Posted March 14, 2023 (edited) 11 hours ago, videofx said: Wow, that could have been. prototype Everyone I have seen has been a TI2732 EPROM Here's a photo. Chip on left is a -003 but doesn't seem to be a classic EPROM where chip on right is -002 and is clearly an EPROM. Odd right? Edited March 14, 2023 by macsonny Quote Link to comment Share on other sites More sharing options...
BillC Posted March 14, 2023 Share Posted March 14, 2023 11 hours ago, macsonny said: Here's a photo. Chip on left is a -003 but doesn't seem to be a classic EPROM where chip on right is -002 and is clearly an EPROM. Odd right? It's likely the CN48414N is a OTP(one time programmable) chip, which means it can be programmed but not erased. Quote Link to comment Share on other sites More sharing options...
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