Draft of user manual for RAMAC restoration project.

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8/5/2005

Draft of user manual for RAMAC restoration project.

Procedures

1.0 Preparing Air Compressor

1.1 Place air compressor outside to reduce noise in laboratory room
1.2 Plug in air compressor
1.3 Turn on air compressor
1.4 Adjust larger air tank to charge it to 60 P.S.I. (if not already set)

2.0 Spinning the Disks

2.1 Fully retract arm to prevent heads from crashing onto spinning disks
2.2 Get key to unlock the switch for spinning disks
2.3 Push switch to "ON" position
2.4 Let disk spin up until squeaking stops and disks look static
2.4.1 If disks do not stop squeaking after 2 mins, stop system and let cool down
2.4.2 Start again after disks have stopped rotating completely
2.4.3 If noise consists seek professional help

3.0 Preparing Arm

3.1 Turn on power supplies.
3.2 There are 5 power supplies, 3 for the mechanics and 2 for read/write.
The bottom three are for the mechanics with 1 (125 v), 2 (50 v), 3 (45 v),
4 (50 v), and 5 (32 v).
3.3 Plug in arm motor to spin up clutches

4.0 Start Up Basic X

4.1 Turn on Controller computer
4.2 Open BasicX by double clicking "BasicX 2.10" icon on desktop
4.3 Select File
4.3.1 Select "Open Editor"
4.3.2 Select "Open Project" Button

5.0 Moving Arm

5.1 In "Open Project," open "Main-control" directory
5.2 Double-click "RAMAC.bxp"
5.3 Now hit "Compile and Run" by pressing F5
5.4 Click onto the command window for inputting data
5.5 Follow instructions on command window (i.e. "Enter track # when prompted)

6.0 Loading Heads

6.1 Repeat Step 4
6.2 Open "Head Trial" directory
6.3 Double-click "Heads.bxp"
6.4 Hit F5 to compile and run the code
6.5 Click onto the command window for inputting data
6.6 Hit space bar to load heads
6.7 Hit space bar again to unload heads
6.8 With arm unlocked
6.8.1 You may push arm in and out of disk to search for a track
6.8.2 Highest pulse is when head is properly locked onto a track

7.0 Reading Off Disk

7.1 Connect ch. 1 of oscilloscope to a wire that is connected to one path leading to the head
7.2 Connect ch. 2 of oscilloscope to a wire that is connected to the other path leading to the head
7.3 Connect ch. 3 of oscilloscope to one of the wires located on top of the drum
7.4 Turn on oscilloscope
7.5 Set the oscilloscope as follows:
7.5.1 Ch. 1 and Ch. 2 are differentials
7.5.2 2 mV per division
7.5.3 200 mA per division
7.5.4 0.2 ms per division

8.0 Erasing Data Off Disk

8.1 Repeat steps 7.1 - 7.5
8.2 Turn on both supplies that power the circuit
8.3 Press the white button until it clicks
8.4 Press the red button for 1-2 seconds, then release
8.5 Press the white button again until it clicks
8.6 Turn off both supplies that power the circuit
8.7 Read the oscilloscope to determine whether or not the signal has decreased

9.0 Writing Data Onto Disk

9.1 Repeat steps 8.1 - 8.2
9.2 Turn on function generator and set for 5 MHz
9.3 Repeat steps 8.3 - 8.6
9.4 Turn off the function generator
9.5 Read the oscilloscope to determine whether or not the signal has changed