JVC 335 - Manual (Page 7)

Model 335 Supplement 7
CAUTION!!!
If the 16 amp, 600 volt fuse becomes defective and must be
replaced, use an exact replacement and, to avoid possible electric
shock, wait at least 15 minutes after turning power off (for
discharging) before replacing the fuse.
CAUTION!!!
ALLOW ADEQUATE CLEARANCE!
The fan inside the External Arc Lamp Power Supply helps keep
the unit cool. Be sure to allow at least six inches of clearance on
both sides to prevent overheating of the unit.
3.0 Brightness Level Checks
If the projector has a low brightness level the items below should
be checked and adjusted, if necessary:
WARNING!!!
The following procedures require the removal of the projector
covers and should be performed by Hughes-JVC Certified
Maintenance Technicians only. Prior to removing covers, review
the chapter on Safety in the Series 300 Service Manual and the
Safety information in this supplement.