Seagate ST3660A - Medalist 545 MB Hard Drive, Руководство по эксплуатации продукта

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2.4.4 Factory-test configuration
Do not install jumpers on pins 5 and 6 and pins 7 and 8 at the same time.
This configuration is used to test the drive at the factory. When jumpers
are installed in both of these positions, the heads continuously seek back
and forth across the media and the drive ignores all control signals sent
by the interface.
2.5 Optional drive activity LED
The drives are available with or without the external activity LED shown
in Figure 3 on page 13. This option is available for users for whom the
activity display through the bus is inaccessible or inconvenient. There
are two LED options:
•
The LED is mounted directly on the printed circuit board, or
•
A two-pin header is mounted on the printed circuit board for a remote
LED. The anode pin of the header is nearest the edge of the PCB.
Master
Slave
CSEL not carried
to pin 28 of
this connector
Computer
Pin 28 grounded
at computer
Figure 4. Connecting cable-selected drives
Medalist XE Family Product Manual, Rev. B 15