Display Unit Ncd-3780 - JRC JMA-3910-4 Instruction Manual

Spring

6.2.2 Display Unit NCD-3780

Cleaning of CRT Surface
Dusts accumulated on the CRT surface will reduce clarity and darken pictures.
For cleaning, wipe it with a soft cloth (flannel or cotton) wetted with water. Do not wipe it strongly with a
dry cloth nor use gasoline or thinner.
When cleaning the CRT, do not wipe it strongly with a dry cloth nor use gasoline or
thinner, otherwise it will be damaged or deteriorated.
Carbon brush
Fig. 6.3 Carbon Brush
CAUTION
6 – 4
Notch
(replace it when it has worn
to this point
Contact surface
with commutator
6.2
6