Didn't someone post that the 8250 has the same motherboard? You might start with those tech manuals, middle light 'not blinking' may be a dead processor or a controller chip... :/ Is the lower drive blinking in any pattern (usually a count followed by a pause, if so, what is the count...) As mentioned earlier there are two processors on the Dual Drives, which makes it more challenging. Nicolas Welte wrote: > > Hi, > > a friend of mine aquired a non working CBM8280 8" dual disk drive. He tried > to repair it, but without service information this is a difficult task. He > also probably doesn't want to ship it to me, since it is such a huge > monster. > > He says the upper drive LED (red) is constantly on, the lower drive LED > (red) is blinking. Otherwise the drive seems to be dead. He also tried to > replace all socketed chips, the last one being the 1797 FDC. I found a 2797 > (uh, 5V version of 1797) somewhere and I sent it to him, but it didn't > help. Does anybody have ideas or maybe even schematics? > > Nicolas > - > This message was sent through the cbm-hackers mailing list. > To unsubscribe: echo unsubscribe | mail firstname.lastname@example.org. -- 01000011 01001111 01001101 01001101 01001111 01000100 01001111 01010010 01000101 Larry Anderson - Sysop of Silicon Realms BBS (209) 754-1363 300-14.4k bps Classic Commodore pages at: http://www.jps.net/foxnhare/commodore.html 01000011 01001111 01001101 01010000 01010101 01010100 01000101 01010010 01010011 - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail email@example.com.
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