Sanyo PLC-XF70 - Optical Unit Top Removal

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-45-

Optical Parts Disassembly

7 Optical unit top removal

Remove 8 screws-A(T3x12) and remove the optical unit top.

Optical unit top

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Table of Contents

Service Manual1
Table of Contents2
Safety Instructions3
- Safety Precautions3
- Product Safety Notice3
- Service Personnel Warning3
Specifications4
Circuit Protections5
- Fuse5
- Thermostats (SW903, SW904)5
- Mechanical Sensor Switches (SW90, SW6581)6
- Temperature Sensors, Wind Sensors and Thermistor7
- Power Failure and Fan Lock Detection8
Maintenance9
- Filter Instructions9
- Replacing the Filter Cartridge10
- Resetting the Filter Counter11
- Resetting the Scroll Counter11
- Lamp Management12
- Lamp Replacement13
- Resetting the Lamp Counter14
- Checking the Projector Used Time and Lamp Used Time14
- Quick Maintenance15
- Cleaning the Optical Parts16
- Cleaning the Projection Lens16
- Cleaning the Projector Cabinet16
Security Function Notice17
Lens Mounting18
- Mechanical Disassembly Flow Chart22
Optical Parts Disassembly39
- Lcd Panels Removal41
- Lcd Panel Type Check41
- Optical Unit Top Removal45
- Optical Parts Locations in the Optical Unit46
- Optical Lamp Unit Top Removal47
- Optical Parts Locations in the Optical Lamp Unit48
Adjustments49
- Adjustments after Parts Replacement49
Optical Adjustments50
- Optical Adjustment Location50
- Before Adjustment51
- Optical Center Adjustment53
- Relay Lens Adjustment55
- PBS Adjustment57
- Contrast Adjustment58
- Back Focus Adjustment59
- Convergence Adjustment60
  - Adjustment Tool Installation61
  - Adjustment Tool Removal62
- Adjustment63
Electrical Adjustments64
- Service Adjustment Menu Operation64
- Memory IC (IC30, IC80) Replacement64
- Circuit Adjustments65
- Test Points and Locations69
- Service Adjustment Data Table70
- Electrical Adjustment71
Chassis Description119
- Chassis over View119
- Boards Connection120
Troubleshooting121
- No Picture121
- Main Board123
- No Power126
- Power Supply and Power Fail Detection127
- Power Failure Detection Tree128
- Power (DC) Power Supply System130
- Temperature Abnormality131
- Power Lens and Shutter System and Abnormality132
- Lamp Abnormality133
- Power Failure Detection System134
- Error Information Table134
- Error History Log135
- Diagnosis of Power Failure with RS-3C Port136
- Diagnosis Procedure136
- Indicators and Projector Condition137
Serial Control140
- Serial Control Interface140
- Status Read Command141
Control Port Functions142
Waveform148
IC Block Diagrams149
- Parts Location Diagrams154
Mechanical Parts List168
Electrical Parts List169
Diagrams & Drawings211
Parts Description and Reading in Schematic Diagram212
Schematic Diagrams215
Printed Wiring Board Diagrams225

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