Sanyo PLC-XF71, Service Manual, Page: 2 / 236

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Contents
SERVICE MANUAL ....................................................... 1
Contents ........................................................................
Safety Instructions ......................................................... 3
Safety Precautions ..........................................................3
Product Safety Notice .....................................................3
Service Personnel Warning .............................................3
Specifications ................................................................ 4
Circuit Protections ......................................................... 5
Fuse .................................................................................5
Thermostats (SW903, SW904) .......................................5
Mechanical sensor switches (SW90, SW6581) ............6
Temperature sensors, wind sensors and thermistor .......7
Power failure and fan lock detection ...............................8
Maintenance .................................................................. 9
Filter Instructions .............................................................9
Replacing the Filter Cartridge ....................................... 10
Resetting the Filter Counter .......................................... 11
Resetting the Scroll Counter ......................................... 11
Lamp Management ....................................................... 1
Lamp Replacement ....................................................... 13
Resetting the Lamp Counter ......................................... 14
Checking the projector used time and lamp used time . 14
Quick Maintenance ....................................................... 15
Cleaning the optical parts.............................................. 16
Cleaning the Projection Lens ........................................ 16
Cleaning the Projector Cabinet ..................................... 16
Security Function Notice ............................................. 17
Lens Mounting ............................................................. 18
Mechanical Disassembly.............................................
Mechanical disassembly flow chart...............................
Mechanical disassembly ...............................................3
Optical Parts Disassembly .......................................... 39
Adjustments ................................................................. 50
Adjustments after Parts Replacement...........................50
Optical Adjustments .................................................... 51
Optical adjustment location ........................................... 51
Before Adjustment .........................................................5
1. Optical Center adjustment .........................................54
. PBS adjustment .........................................................58
3. Contrast adjustment ..................................................59
4. Back focus adjustment ..............................................60
5. Convergence adjustment ..........................................61
Adjustment ....................................................................64
Electrical Adjustments ................................................. 65
Service Adjustment Menu Operation ............................65
Memory IC (IC30, IC80) Replacement .....................65
Circuit Adjustments .......................................................66
Test Points and Locations .............................................70
Service Adjustment Data Table .....................................71
Chassis Description .................................................. 10
Chassis over view........................................................ 10
Boards Connection ...................................................... 11
Troubleshooting ......................................................... 1
No Picture ....................................................................1
No Power ..................................................................... 17
Power Supply and Power Fail Detection ..................... 18
Power failure detection tree ......................................... 19
Power (DC) power supply system ...............................130
Fan Control System ..................................................... 131
Temperature Abnormality ............................................13
Power Lens and Shutter System and Abnormality ......133
Lamp Abnormality .......................................................134
Power failure detection system ...................................135
Error information table .................................................135
Error History Log .........................................................136
Diagnosis of Power Failure with RS-3C port ........... 137
Diagnosis procedure ................................................... 137
Indicators and Projector Condition ..............................138
Serial Control ..............................................................141
Serial Control Interface ............................................... 141
Control Port Functions............................................... 143
Waveform .................................................................. 149
IC Block Diagrams..................................................... 150
Parts Location Diagrams ........................................... 155
Mechanical Parts List ................................................ 169
Electrical Parts List .................................................... 171
Diagrams & Drawings .................................................. A1
Parts description and reading in schematic diagram ..A
Schematic Diagrams ...................................................A3
Printed Wiring Board Diagrams ................................. A13
Pin description of diode, transistor and IC ................A3
Note on Soldering ......................................................A4