Response Electronics CL6011B Especificaciones Pagina 121

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A-1Maintaining the Calibrator
Original — December 1991 UM4.6:CS6003
Appendix A
Maintaining the Calibrator
A.1 Power Supply Status Indicator
The power supply status indicator is located next to the calibrator
ON/OFF switch on the front panel. Whenever the ON/OFF switch is set
to ON, the power supply status indicator should be lit. If ON/OFF switch
is ON and the indicator is not lit, either a line power fuse is open or the
calibrator requires repair.
A.2 Fuses
There are three fuses that can be checked and replaced. The ac power
fuse is located next to the ON/OFF switch. This fuse is a glass body type
fuse and can be visually inspected. To replace a blown fuse follow these
steps:
Step 1: Make sure the ac power cord is unplugged.
Step 2: Press the spot marked PRESS on the fuse holder.
Step 3: Remove the fuse holder.
Step 4: Replace the fuse with one of equal rating.
Step 5: Reinstall the fuse holder.
Step 6: Reconnect the ac power cord.
Calibrators that use 100—120 volt ac line power have a 3 amp fuse;
those that use 240 volt ac line power have a 1.5 amp fuse.
Fuses for the +24V and +5V breakout terminals are located on the
calibrator front panel. They are housed in a fuse holder situated between
the double rows of breakout terminals. To check these fuses, unscrew
the plastic cover of the fuse holder and remove the fuses from their
sockets. The fuses have small glass windows and can be visually
inspected. A blown fuse indicates an attempt has been made to draw
power from one of the breakout terminals. The +24V and +5V breakout
terminals are intended to supply only 75 mA. Each fuse is rated at 1/10
A.
A
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