AVTMTTR330 Rev 3 March 2010
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6
Service
Maintenance
Maintenance should be performed only by qualified persons familiar with the
hazards involved with high-voltage test equipment. Read and understand
Sections 2, 3, 4, and 5 before performing any service.
The TTR330 requires only periodic inspection. Periodically, inspect all hardware
items, including the cable assemblies, to ensure all is in good condition.
The TTR330 may be cleaned periodically. In so doing, do not allow water to
penetrate panel holes. An all-purpose, household spray cleaner can be used to
clean the panel. Polish with a soft, dry cloth, taking care not to scratch the
display screen cover. Clean the cables and mating panel receptacles with
isopropyl or denatured alcohol applied with a clean cloth.
Fuse Replacement
The TTR330 is protected by two mains fuses. Fuse replacement is indicated if
the electronic circuits do not function. Refer fuse replacement to qualified
personnel only. To avoid electric shock and fire hazard, use only the fuses
specified on Instrument panel. Note that 2 spare fuses are included with each
TTR.
F
WARNING
Before replacing the fuses, disconnect the power input
plug from the live power source.
To replace fuse(s), proceed as follows:
1. Remove power cord.
2. Pry door open at socket.
3. Lift and swing door into socket.
4. Lift fuse holder out of housing.
5. Install one (1) AG fuse or two (2) metric fuses*.
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