Kowa K9L48B, Service Manual, Page: 54 / 60

GG-09001 Edition 1.3
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12. Maintenance/Inspection
We recommend you to have this system inspected biannually to use this system safely for a long
time.
12-1 Replacing fuse
①
Turn the power switch OFF and unplug the power supply cable from
the power outlet.
②
Using a flat-head screwdriver, turn the 2 screws on the power supply
unit fuse holder counterclockwise to take out fuses.
③
Replace with new replacement fuses and close the fuse holder.
Check the rating and type of a replacement fuse before installing it.
12-2 Replacing observation light bulb
①
Turn the power switch OFF and unplug the power supply cable from the power outlet.
②
Using a coin or a flat-head screwdriver, loosen the lamp cover screws and remove the lamp
cover. Make sure that the lamp is sufficiently cooled off before proceeding to the following
steps.
③
Using a coin or a flat-head screwdriver, loosen the inner black lamp cover screw. Remove
the observation lamp from the socket while holding the lampshade by hand.
④
Insert a new observation lamp to the end of the socket with its lampshade held by hand while
watching for the direction of lampshade protrusion. Make sure that the protrusion is securely
fitted into the groove.
⑤
Tighten the inner black lamp cover screws to install the lamp.
⑥
Fit the lamp cover and tighten the lamp cover screws.
Precautions for part replacement
・
Always turn the power switch OFF and unplug the power supply cable before proceeding to
fuse, flash lamp, or observation lamp
r
eplacing procedure since it may accompany a
high-level of danger.
・
Do not replace an i
llumination or flash lamp immediately after turning it off. You could be
burned by
a lamp heated to a high temperature. Wait for approximately 30 minutes to cool
it down before replacing.
・
Do not touch the bulb installed inside of the observation lamp
.
Touching the bulb may
reduce its intensity or shorten its length of life.