Canon LV-S3E/D78-5423, Руководство по обслуживанию

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Part 2: Repair Information
2-2
2. CIRCUIT PROTECTIONS
This projector provides the following circuit protections to operate in safety. If the
abnormality occurs inside the projector, it will automatically turn off by operating one of
the following protection circuits.
2.1 Fuse
A fuse is located inside of the projector. When
the POWER indicator is not lightning, the fuse
may be opened. Check the fuse as following
steps.
The fuse should be used with the following type;
[How to replace the fuse]
1. Remove the cabinet top following to
“Mechanical Disassemblies”.
2. Remove the cover on the Filter Board.
3. Remove fuse from fuse holder.
To install the fuse, take reversed step in the
above.
2.2 Thermal Switch
There is the thermal switch (SW902) inside of
the projector to prevent the internal temperature
rising abnormally. When the internal
temperature reaches near 100˚C, turn off the AC
main power supply automatically.
The thermal switch is not reset to normal
automatically even if the internal temperature
becomes normal. Reset the thermal switch
following procedure.
Check the resistance between terminals of
thermal switch by using the tester. If it has high
impedance, thermal switch may be in operative.
[How to reset the thermal switch]
1. Remove the cabinet top following to “Mechanical Disassemblies”.
2. Press the reset button on the thermal switch with a sharp-pointed tool.
Fuse Part No. CY2-8736-000
TYPE T4.0AH 250V FUSE
LITTEL FUSE INC. TYPE 215004
Before press the reset button, make sure that the AC cord must be
disconnected from the AC outlet.
CAUTION
Fig. 2-1
Fig. 2-2
Filter Board
Thermal Switch
Fuse