User's Manual

Table Of Contents
Radical-7 Chapter 9: Service and Maintenance
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Replacing the Batteries
Before installing or removing the battery, make sure the AC power cord is removed and
power to the Radical-7 is turned off.
To replace the rechargeable Handheld battery
1. Turn off the Radical-7 Handheld off and remove the patient cable connection. If
docked, detach the Handheld from the Docking Station.
2. Loosen the closure screw on the battery compartment door and lift out the
battery.
3. Take a new battery and place it in the compartment.
4. Tighten the closure screw.
5. Place the Handheld into Docking Station, turn on line power and charge battery.
See Battery Operation and Maintenance on page 127.
Replacing the Fuses
Should a power problem blow one or both of the fuses in the power entry module on the rear
panel, the fuse(s) will need to be replaced. Before you begin, you will need a 5-mm or
3/16-in screwdriver.
To replace the fuse(s)
1. Disconnect instrument from AC power.
2. Remove AC power cord from the power entry module at the rear of the Docking
Station.
3. Using the screwdriver, gently pry loose the fuse cover in the left portion of the
power entry module, exposing the fuse holder.
4. Using the screwdriver, gently remove the fuse holder.
5. Note how the fuse(s) are placed in the fuse holder for installation of the new
fuse(s).
6. To remove the fuses from the fuse holder, use the edge of the screwdriver blade
to pry against the bottom of the metal portion of the fuse where it is secured to
the glass portion of the fuse.
7. Place the fuse(s) (1 amp, metric, fast-acting, 5x20mm, 250V) in the fuse holder,
properly orienting the fuse(s).
8. Slide the fuse holder back into the power entry module and press firmly to make
sure it is completely seated.
9. Close the fuse cover and press gently until it seats completely, flush with the
back of the Docking Station.
The instrument is ready to be reconnected to AC power. If the fuses blow shortly
after replacement, the instrument requires service.