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R
4.2.3 Display PWB Assembly A7
To gain access to the component side of the
A7 Assembly, remove three cable connectors.
Remove four socket head fasteners holding the
PWB to the A3 Control Panel. Carefully lift the
A7 Assembly away from the A3 Control Panel.
Reverse this process when reassembling. Use
Loctite #222 on all fasteners when reinstalling.
4.3 CLEANING
The interior of the unit may be vacuumed or
blown out as required. The exterior of the unit
may be cleaned by wiping it with a cloth that
has been dampened (not dripping) with a mild
detergent such as Windex® or Formula 409®.
Windex® is the registered trademark of the
Drackett Products Company. Formula 409® is
the registered trademark of the Clorox Company.
4.4 PERIODIC INSPECTION
The Sabre 2400 should be visually inspected at
least every six months. This inspection should
include checks for:
• Damage to the power cord.
• Damage to the power plug.
• Tightness of the power plug.
• Proper mating and absence of damage to the
patient connectors.
• Obvious external or internal damage to the
unit.
• Accumulation of lint or debris within the unit
or heatsink.
• Control Panel punctures or dents
4-2
4.5 PERIODIC PERFORMANCE
TESTING
The Sabre 2400 should be performance tested
at least every six months. Every unit is supplied
with a serialized Production Test Data Sheet that
tabulates the results of the factory tests that were
performed on the unit. This data is supplied so
that it may be used as a reference for subsequent
tests. Recommended periodic performance tests
are listed in the following sections.
When comparing your RF output current read-
ings to those on the Test Data Sheet, bear in
mind that most RF ammeters may read an error
up to 3% of full scale. This means an actual cur-
rent of 0.60A may register on a 1A meter any-
where from 0.57 to 0.63A.
4.5.1 Chassis Ground Integrity
Equipment:
Volt-Ohmmeter, Simpson 260 or equivalent
Procedure:
Connect the ohmmeter between the earth ground
prong of the power plug and the footswitch con-
nector. Confirm less than 0.1 ohm resistance.
4.5.2 Displays, Alarms, Commands
Preliminary checks of the items listed below
appear in Section 2.3.
• Return Fault Alarm
• Mode Indicator Lamps
• Sound Tones and Volume Control
• Hand control/Forceps Operation
• Foot switch Operation
• Resistance Indicator
• Return Fault Indicator
• Power Indicators
Equipment:
2 Hand controls, Single and Dual Foil Return
Electrodes, Foot switches, Jumper Wire
Procedure: See Section 2.3.
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Troubleshooting
