Loewe 67501 D 00, Руководство по обслуживанию

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67501 T/D 00
2 – 2
The drive doesn't function normally.
Are 12V and 5V supplied to the drive?
Check the drive. Check the peripheral circuits of CN8102 and IC8104.
Is level of pin (1) of CN8102 at High?
Check the power PWB, BD_12V, BD_5V and their peripheral
circuits.
NO
NO
NO
NO
NO
NO
NO
NO
YES
Are you communicating with the drive via ATAPI?
YES
Pin (37) CS0_ and pin (38) CS1_ of CN8102 occasionally turn
to "L".
YES
Pin (35) DA0 ,pin (33) DA1 and pin (36) DA2 of CN8102
occasionally turn to "L".
YES
When interrupted by INTRQ, pin (31) of CN8102 functions at
"H".
YES
When DMACK_data is transferred, pin (29) of CN8102
functions at "L".
YES
When DIOR_ data is read and DIOW data is written, pins (25)
and (23) of CN8102 function at “L”.
YES
YES
FLOW CHART No.2