Circuit Protections - Sanyo PLC-XF47 Service Manual

■ 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.
● Fuse
A fuse(F901) is located inside of the projector. When the
POWER indicator is not lighting, 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 15.0A400V FUSE
SoC CoRP. SHV14 15A N4
How to replace the fuse
1. Remove the cabinet top following to "Mechanical
Disassemblies".
2. Remove the cover and the fuse from fuse holder.
to install the fuse, take reversed step in the above.
● AC Current Sensor
The AC Current Sensor is provided to prevent damage to the power supply circuits.
When AC input voltage is under 108V at MAINS SW ON, the AC Current Sensor will be operated and the CPU does not turn
the projector on, and both of READY and WARNING TEMP. indicators start flashing.
Check that the AC current sensor signal is correct.
Hot circuit
FUSE
AC-INPUT
F901
L : Abnormality
NOISE FILTER
MAINS SW
SW901
LF901
K96W
- 5 -
Fuse (F901)
CURRENT SENSOR
Z96W&A90
Cover
Fuse
Holder
ASS'Y POWER