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SECTION 3 CONSTRUCTION

[ ] Inspect all inserted ICs for bent pins.

[ ] Place DOUBLE D controller board in an extender board

in an S100 mainframe. Open all switches in S1. Turn

power switch on.

[ ] Adjust trimmer R5 for a 2.0 MHz clock signal at IC 1B

pin 12. (1.0 MHz for 5" configuration)

[ ] Turn power switch off. Connect disk interface cable

from controller to the disk drive. Observe pin 1

indications. Turn power switch on.

[ ] Insert a preformatted single density diskette into

the drive (DRIVE 0) and close the door.

[ ] Close switch TST*. This will select drive 0, turn the

motor control on, and load the head.

[ ] Adjust R2 for a 1.0 us output from one-shot 2A pin 5.

(2.0 us output on 5" configuration).

[ ] Open switch TST*. Turn power switch off.

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Qume DataTrak 8 Handbuch Seite 35