Safety Precautions

The chassis of this projector is isolated COLD from AC line by using the converter transformer. Primary side of the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is identified with the line HA, in the schematic diagram. For continued product safety and protection of personnel injury, servicing should be made with qualified personnel. The following precautions must be observed. 1 An isolation transformer should be connected in the power...

Model Chassis No

These schematic diagrams and printed wiring board drawings are part of the service manual original for chassis No. ME3-XU4500, MF3-XU4600 models PLC-XU45, PLC-XU46. File with the service manual No. SM5110464-00. All the information of part numbers and values indicated on these diagrams are at the beginning of production. To improve the performance, there may be some differences to the actual set. When you order the service parts, use service parts code mentioned on the parts list in this...

Thermal switch

There is the thermal switch SW902 inside of the projector to prevent the internal temperature from 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...

No Power

Fluke Scopemeter 199b Electrical Diagram

The possible causes of No Power are listed below. Please check following and refer to power supply and protection circuits diagram in the figure opposite. 1. Stop the operation of power supply circuit due to detection of abnormality. - Detected the abnormality on the secondary power supply lines. Power failure detection diodes detect an abnormal voltage on the power supply. Check the shortage of secondary circuits, ICs, condensers, etc. - Detected the operation stop of cooling fans. Power...