Circuit Protections; Fuse; Thermostats (Sw903, Sw904) - Sanyo PLC-XF70 Service Manual

Circuit Protections

This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the pro-
jector, it will automatically turn off by operating one of the following protection circuits.

Fuse

A fuse is located inside of the projector. When the LAMP/
READY indicators are not lightning, the fuse may be opened.
Check the fuse as following steps.
The fuse should be used with the following type;
Fuse Part No. : 323 028 4202
tYPe 15.0A 400V FuSe
Soc corP. SHV14 15A N4
How to replace the fuse
1. Remove the cabinet top following to "Mechanical disas-
sembly".
. Remove the cover and fuse from fuse holder.
to install the fuse, take reversed step in the above.

Thermostats (SW903, SW904)

There are the thermostat switches (SW903 and SW904) inside of the projec-
tor to detect the internal temperature rising abnormally. When the internal
temperature reaches near 90˚C, the thermostat opens to stop the operation
of the power supply circuit.
The thermostat will automatically return to normal condition when the inter-
nal temperature becomes normal.
Thermostat
(SW903)
Thermostat
(SW904)
-5-
Cover
Fuse
Holder