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Lamp cover switch
The lamp cover switch (SW901) cuts off the drive signal to the lamp
circuit when the lamp cover is removed or not closed completely.
After opening the lamp cover for replacing the lamp ass’y, place the
lamp cover correctly otherwise the projector can not turn on.
thermal switch
There is the thermal switch (SW90) inside of the projector to de-
tect the internal temperature rising abnormally. When the internal
temperature reaches near 105˚C, the thermal switch opens to stop
the operation of the power supply circuit.
The thermal switch cannot be reset itself automatically even if the
internal temperature becomes normal. Reset the thermal switch
following to the below procedure.
How to reset the thermal switch
1. Remove the cabinet top, cabinet front and main board and then
remove the power box top cover.
. Press the reset button on the thermal switch in the power box.
cAutIoN:
Before press the reset button, make sure that the AC cord must
be disconnected from the AC outlet.
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.
circuit Protections
SW901
Thermal switch (SW90)
Содержание PRM-20
Страница 67: ... 67 IC Block Diagrams FA7703 DDC Control IC7811 TC74LVX4053 Analog Multiplexer Demultipexer IC1041 ...
Страница 68: ... 68 IC Block Diagrams MP2106 DC DC Converter IC5821 IC5861 FA5502 P F Control IC621 ...
Страница 69: ... 69 IC Block Diagrams L3E06150 D A S H LCD Driver IC501 IC531 IC561 HIN202EIB RS 232C Driver IC3801 ...
Страница 70: ... 70 IC Block Diagrams L3E01060 Level Shift IC2501 IC2531 IC2561 L3E07111 LCD Driver Gamma Correction IC401 ...
Страница 71: ... 71 IC Block Diagrams LM4889 Audio Output IC5031 NJW1156 Audio Control IC5001 ...
Страница 72: ... 72 IC Block Diagrams PW190 System Control ADC Video Decoder Scaler IC301 STR Z2156 Power OSC IC631 ...
Страница 73: ... 73 TE7783 Parallel I O Expander IC1802 IC Block Diagrams R5F21134FP System Control Alarm IC8701 ...
Страница 74: ... 74 LAN9118 LAN Driver IC8801 IC Block Diagrams MC9328MX21 System Control of Network IC8301 ...
Страница 100: ...KM5 2000 KM5 20 S 00 100 Mechanical Parts List L12 L08 L13 L14 L05 L15 L11 L09 L04 L06 In the Optical Unit L08 ...
Страница 103: ...KM5 2000 KM5 20 S 00 103 ...
Страница 104: ... KM5YC KM5ZC January 2009 DC 200 Printed in Japan ...
Страница 116: ...A10 SCH_KM5YC SCH_KM5ZC NO DATA ...