BOXLIGHT MP-45, Service Manual

Page: 2 / 130

2
■
Contents
■
Safety instructions ________________________________________________3
■
Specifications __________________________________________________ 4
■
Adjustments after parts replacement ________________________________ 5
■
Circuit protections ______________________________________________ 6-7
●
Fuse ____________________________________________________ 6
●
Thermal switch ____________________________________________ 6
●
Interlock switch ____________________________________________ 6
●
Warning temperature and power failure protection ________________ 7
■
Mechanical disassemblies ______________________________________ 8-12
■
Optical parts disassemblies ____________________________________ 13-16
■
LCD panel/prism ass’y replacement ________________________________ 17
■
Lamp replacement ______________________________________________ 18
■
Optical adjustments __________________________________________ 19-21
●
Contrast adjustment ________________________________________ 19
●
Condenser adjustment ______________________________________ 20
●
Relay lens adjustment ______________________________________ 21
■
Electric adjustments __________________________________________ 22-40
●
Service adjustment menu operation ____________________________ 22
●
Circuit adjustments ______________________________________ 23-27
●
Service adjustment data table ______________________________ 28-39
●
Test points and locations ____________________________________ 40
■
Circuit block diagrams ________________________________________ 41-45
■
Power supply lines ______________________________________________ 46
■
Troubleshooting ______________________________________________ 47-51
●
No power ______________________________________________ 47-48
●
No picture ________________________________________________ 49
●
No sound ________________________________________________ 50
●
Lens motor problems ______________________________________ 51
■
Control port functions ________________________________________ 52-56
■
Waveforms ____________________________________________________ 57
■
Cleaning ______________________________________________________ 58
■
IC block diagrams ____________________________________________ 59-70
■
Service parts lists __________________________________________ 71-111
●
Electrical parts list ______________________________________ 71-105
●
Mechanical parts list __________________________________ 106-108
●
Optical parts list ______________________________________ 109-111
Drawings & Diagrams
______________________________________ A1-A17
■
Parts description and reading in schematic diagram ____________________ A2
■
Schematic diagrams ________________________________________ A3-A10
■
Printed wiring board diagrams ________________________________ A11-A16
■
Pins description of ICs, transistors, diodes __________________________ A17