Diagnostic Flow Chart (continued)

3-C


Read Error
     |
     |
Test with disk
EME - CF2
     |
     |
TR39 2F output-----------N-----Head touch OK?-----N-----Replace drive
>= 140 mV                           |
     |                              | 
     |                              Y
     Y                              | 
     |                              | 
     |                          Is head output---N------Replace head assembly
Is TROO output------N           1 mV or more?
=< 220 mV           |               |
     |              |               |
     Y              |               Y
     |              |               |
Read/write error    |               |
in all tracks?->----+--Y---------->-Replace Drive
     |                           
     N
     |
Read error only-----------N-----------Seek Error----------N-------Replace drive
in Specific track?                        |
     |                                    |
     Y                                    Y
     |                                    |
Replace disk                              |
(inspect by drive)                     TROO output normal-----N-----Replace TROO
                                          |                         sensor
                                          |
                                          Y
                                          |
                                          |
                                       Replace drive