General Maintenance And Inspection - JRC JSS-296 Instruction Manual

4.1 General Maintenance and Inspection

General maintaining and inspecting items with usual tools and apparatus are listed below.
No. Item
1 Cleaning
Looseness
2
of parts
3 Fuse
4 PCB Unit
If you remove the PCB unit, be sure to store it in a non-conductive bag. If you wrap it up with materials such
Note
as aluminum, the buck-up power supply may short circuit and the IC may be damaged.
4-2
Gently clean the surface of the panel, knobs, switches, and upper/bottom cover with
a soft cloth or silicon oil.
Remove dust in the unit using a brush or vacuum cleaner. No oil is needed because
this unit has no moving mechanisms inside.
Inspect for looseness and correctly tighten the following:
screws, nuts, knobs, switches, volume pots, connectors and relays inserted into
sockets.
If the power source fuse is blown, be sure to inspect the cause before replacing the
blown fuse with a new one.
Remove screws mounting the unit, demount the unit from the main chassis, and
inspect the unit for discoloration and parching of components. To exchange parts,
call our service center or agents.
Maintenance and inspection