Molecular Devices Digidata 1550B, User Manual

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Digidata 1550B Low-Noise Data Acquisition System User Start Guide
28 5040237 B
Replacing Fuses
WARNING!
High Voltage. Always turn the power switch off and disconnect the power
cord from the main power source before performing any maintenance procedure that
requires removal of any panel or cover or disassembly of any interior instrument
component.
Fuses burn out occasionally and must be replaced.
If the instrument fails to switch on, or if the power fails while the instrument is running, check
that the power cable connection to the AC input port in the back of the instrument is secure
and verify that the power outlet is functioning.
If the checks fail to fix your power loss, replace the fuse. If you need replacement fuses,
contact Molecular Devices Technical Support.
The Digidata 1550B digitizer uses a pair of fuses located in a fuse carrier under the AC input
port
For Digidata 1550B digitizer fuse specifications, see AC Power on page 38 .
Figure 4-1: Digidata 1550B digitizer Fuse in Fuse Carrier Replacement
Item Description
1 Fuses in carrier installed
2 Fuses in carrier released
3 Fuses in carrier removed
To replace the Digidata 1550B digitizer fuse:
1. Switch off the power from the front of the instrument.
2. Unplug the power cord from the AC input port.
3. Press the carrier-release side-tabs towards each other and pull out the fuse carrier to
remove it from the instrument.
4. Remove the old fuses from the carrier.
5. Place new fuses into the carrier.
6. Reinstall the fuse carrier in the instrument. Push the carrier into the slot until you hear the
side-tabs click.