Keyboard Test
1. Select the Keyboard test using the MODIFY PROGRAM and DRAW
keys.
2. Press each key (save MODIFY PROGRAM key for last) and verify
that LED extinguishes (if equipped) and Key Pressed value indicates
the correct key name.
3. Press the MODIFY PROGRAM key to exit the Keyboard test.
Centrifuge Testing
Fluid Sensor Test
1. Select the Centrifuge test in Diagnostics using the MODIFY
PROGRAM and DRAW keys.
2. Open the centrifuge cover and place a moist paper towel or cotton
swab on the fluid sensor located in the centrifuge well. Verify that the
SPILL value changes to TRUE.
3. Remove moisture and wipe dry. Verify that the SPILL value changes
to FALSE.
Centrifuge Cover & Lock Function Test
1. Close centrifuge cover and slowly rotate the cover lock until the
COVER value changes from UNLOCKED to LOCKED. Verify that
the cover knob can be turned an additional 3/8" to 5/8" after the cover
lock switches activate.
2. If adjustment is required, refer to the Chapter 2, Machine Part
Replacement Reference.
Centrifuge Speed and Bowl Vibration Test
1. Install a bowl partially filled with water (approximately 2/3 full) into
the centrifuge. Close and lock the centrifuge cover.
2. Start the centrifuge by pressing the DRAW key. Verify the Centrifuge
Speed stabilizes to 7000 ± 100 rpm.
3. If calibration is required, refer to Chapter 4, Calibration.
4. As the centrifuge is spinning, observe the air/water interface in the
bowl and listen for any signs of centrifuge contract with the chassis.
Verify that the air/water interface never becomes discontinuous,
indicating excessive vibration.
5. If excessive vibration or noise is observed, refer to the Machine Part
Replacement Chapter to realign the centrifuge.
6. Press the STOP key to stop the centrifuge and remove the bowl from
the centrifuge.
7. Exit the centrifuge test by pressing the MODIFY PROGRAM key.
5-8
PCS2 Service Manual
