DIAGNOSTIC and ADJUSTMENT procedures are outlined in the diagnostic disk and manual package. Order Part #314052-01 Version 3.0 & 3.5 Diagnostic Package. |
On power up, the three LED's on the drive should blink. The drive LED's go off and the center Tri-State LED remains green. The sytem has a built in self diagnostic which can be read in the form of a flash code. In the event of a failure, the 3 LED's will blink in a repetitive sequence. The number of blinks between intervals will indicate the possible location of a failure.
NUMBER OF FLASHES | ERROR CAUSE | COMPONENT | LOCATION |
---|---|---|---|
1 | Zero Page | 6532 | UC1,UE1 |
2 | ROM $E0000-$EFFFF | 2364 | UL1 |
3 | ROM $C000-$DFFFF | 2364 | UH1 |
4 | Unused | ||
5 | Zero Page | 6530 6502 | UK3 UH3 |
6 | Common RAM $1000-$13FF | 2114 | UC4,UC5 |
7 | Common RAM $2000-$23FF | 2114 | UD4,UD5 |
8 | Common RAM $3000-$33FF | 2114 | UE4,UE5 |
9 | Common RAM $4000-$43FF | 2114 | UF4,UF5 |
10 | Controller ROM | 6530 6502 | UK3 UH3 |
If the LED's come on and stay on, the microprocessor UN1 is probably at fault.
This page has been created by Sami Rautiainen. | |
Read the small print. | Last updated August 27, 1998. |