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K0320 Issue No. 1
Service, repair and parts
Fault finding procedures
When the MCX-II doesn't work
properly or doesn't work at all, it is
recommended to return the unit to one
of the GE Service Centres or to your
local distributor after you have
checked the following;
Most of the problems with portable
instruments are related to power
supply defects, blown fuses or
displaced connectors.
The unit doesn't work at all.
1. When normally line powered,
change to battery operation to
check the line adaptor.
2. When normally battery
powered, check the contact
springs for corrosion and
spring force.
3. Check total battery voltage
with a voltmeter. Alkaline
should read around 9 Volts
and NiCd's should read
around 7.2 Volts when new or
fully charged.
4. Open the MCX-II as described
in the previous paragraph and
check whether the PCB
interconnecting plugs are still
in position.