pcuser4 Posted February 25, 2006 Share Posted February 25, 2006 I tested the Single Density formatted disk on 1050. 1050 can read it. I insert the same disk in XF551. XF551 still cant read it. XF551 is damaged. I do not know what part is damaged. I think some chips are malfuctional or 5.25 mechanism. Which one is damaged? Thanks! Jack Quote Link to comment Share on other sites More sharing options...
jaybird3rd Posted February 26, 2006 Share Posted February 26, 2006 First of all, welcome to AtariAge! I would guess that the fault is with the mechanism (does it sound like it's physically having trouble reading the disk?) My recommendation would be to swap it out with another working 360K 5.25-inch drive mech and test it. Just make sure that the DRIVE0 jumper on the drive mech is set correctly first; you'll know that it is if you plug it in and switch on the XF551 and see the drive activity LED flash on for a fraction of a second. If the other mech doesn't work either, you might want to take it out completely and look over the drive's mainboard and see if there's any obvious physical damage. You can also retouch the soldering on the SIO connectors, which is a frequent point of failure with the XF551. Quote Link to comment Share on other sites More sharing options...
pcuser4 Posted February 27, 2006 Author Share Posted February 27, 2006 Do you have any XF551 diagnositc program to test the XF circuit if it is ok? Which mechanism works with XF551? I tried to use teac, it does not work. Quote Link to comment Share on other sites More sharing options...
jaybird3rd Posted February 28, 2006 Share Posted February 28, 2006 Do you have any XF551 diagnositc program to test the XF circuit if it is ok? Which mechanism works with XF551? I tried to use teac, it does not work. 1025544[/snapback] Unless I'm mistaken, any 360K 5.25-inch drive mech will work with the XF551 as long as the DRIVE0 jumper is set correctly. You'll want to check the documentation for your drive to see how to do this. I'm afraid I haven't seen any diagnostic programs for the XF551, but perhaps someone else on these boards knows of one. Quote Link to comment Share on other sites More sharing options...
pcuser4 Posted February 28, 2006 Author Share Posted February 28, 2006 How do I check the drive 0? Show me how to check it. Quote Link to comment Share on other sites More sharing options...
+warerat Posted March 1, 2006 Share Posted March 1, 2006 How do I check the drive 0? Show me how to check it. 1026124[/snapback] Should be a group of jumpers on the board near the floppy connector. Even a newer model 1.2MB 5.25" I have from the PC days has them-- they're labeled S0-S3 on my drive, and the jumper is on S0. Quote Link to comment Share on other sites More sharing options...
pcuser4 Posted March 1, 2006 Author Share Posted March 1, 2006 I found the jumper near the most 1.2MB 5.25 drive from the PC. The jumper of drives set D0 or S0. The different drives connect to XF551 board. All the drives can not read and format. The XF551 drive sets D1 that connects to PC, the drive can not read and format! I dont know which part is damaged. Do you think 360K PC drive works with the XF551 board? what else? Quote Link to comment Share on other sites More sharing options...
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