Sanyo PLC-XF71 - Main Board Removal

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Mechanical Disassembly

3-2 Filter cover removal

1 Slide the filter cover and remove it as shown in the figure.

4 Main board removal

1 Remove the prism dust cover upward off.

2 Remove 5 screws-A (M3x6) and remove the main board.

Cabinet top ass'y

Filter cover

Prism dust cover

Main board

Main Page

Service Manual1
Table of Contents2
Safety Instructions3
- Safety Precautions3
- Product Safety Notice3
- Service Personnel Warning3
- Operating Environment4
- Remote Control4
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
Resetting Procedure17
Security Function Notice17
Lens Mounting18
Lens Mounting21
Mechanical Disassembly22
- Mechanical Disassembly Flow Chart22
Optical Parts Disassembly39
- Lcd Panels Removal41
- Lcd Panel Type Check41
- Optical Unit Top Removal46
- Optical Lamp Unit Top Removal48
- Optical Parts Locations in the Optical Lamp Unit49
Adjustments50
- Adjustments after Parts Replacement50
- Note on the Main Board Replacement50
Optical Adjustments51
- Optical Adjustment Location51
- Before Adjustment52
- Optical Center Adjustment54
- Relay Lens Adjustment56
- PBS Adjustment58
- Contrast Adjustment59
- Back Focus Adjustment60
- Convergence Adjustment61
  - Adjustment Tool Installation62
  - Adjustment Tool Removal63
- Adjustment64
Electrical Adjustments65
- Service Adjustment Menu Operation65
- Memory IC (IC30, IC80) Replacement65
- Circuit Adjustments66
- Electrical Adjustment70
- Test Points and Locations70
- Service Adjustment Data Table71
Chassis Description120
- Chassis over View120
- Boards Connection121
Troubleshooting122
- No Power127
- Power Supply and Power Fail Detection128
- Power Failure Detection Tree129
- Power (DC) Power Supply System130
- Fan Control System131
- Temperature Abnormality132
- Power Lens and Shutter System and Abnormality133
- Lamp Abnormality134
- Power Failure Detection System135
- Error Information Table135
- Error History Log136
- Diagnosis of Power Failure with RS-3C Port137
- Diagnosis Procedure137
- Indicators and Projector Condition138
Serial Control141
- Serial Control Interface141
  - Functional Execution Command141
  - Status Read Command142
Control Port Functions143
Waveform149
IC Block Diagrams150
Parts Location Diagrams155
Mechanical Parts List169
Electrical Parts List171
Diagrams & Drawings213
Parts Description and Reading in Schematic Diagram214
Schematic Diagrams217
Printed Wiring Board Diagrams227

Sanyo PLC-XF71 - Main Board Removal

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