AVTMTTR310 Rev 8 May 2016
109
8
Service
Maintenance
Maintenance should be performed only by qualified persons familiar with the
hazards involved with high-voltage test equipment. Read and understand Section
2, Safety, before performing any service.
The TTR310 test set is sturdily constructed and requires no periodic
maintenance. Routine maintenance is all that is required for the TTR310 test sets.
Inspect the cable assemblies occasionally to ensure they are in good condition.
The appearance of the TTR310 test set can be maintained by occasionally
cleaning the case, panel and cable assemblies. Clean the outside of the carrying
case with detergent and water. Dry with a clean, dry cloth. Clean the control
panel with a cloth dampened with detergent and water. Do not allow water to
penetrate panel holes, because damage to components on the underside may
result. 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 TTR310 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.
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