![background image](http://html.mh-extra.com/html/canon/lv-s4/lv-s4_service-manual_62552002.webp)
■
Safety Instructions ................................................................................................3
■
Specifications ........................................................................................................4
●
Fuse ..........................................................................................................5
●
Thermal switch ..........................................................................................5
●
Lamp cover switch ....................................................................................5
■
Circuit Protections ................................................................................................5
■
Lamp Replacement ..............................................................................................7
■
Mechanical Disassemblies ....................................................................................8
●
Electrical Parts Location ..........................................................................14
●
Connection around the Main Board..........................................................15
■
Optical Parts Disassemblies ..............................................................................16
■
LCD Panel/Prism Ass’y Replacement ................................................................21
■
Adjustments after Parts Replacement ................................................................22
■
Optical Adjustments ............................................................................................23
■
Electrical Adjustments ........................................................................................26
●
Service Adjustment Menu Operation ........................................................26
●
Circuit Adjustments ..................................................................................27
●
Service Adjustment Data Table ................................................................30
●
Test Points and Locations ........................................................................34
■
Chassis Block Diagrams ....................................................................................35
■
Power Supply Lines ............................................................................................38
■
Troubleshooting ..................................................................................................39
●
No Power ..................................................................................................39
●
No Picture ................................................................................................40
●
No Sound ..................................................................................................41
■
Control Port Functions ........................................................................................42
■
Waveforms ..........................................................................................................46
■
Cleaning ..............................................................................................................47
■
IC Block Diagrams ..............................................................................................48
-2-
■
Contents
Drawings & Diagrams
................................................................ A1-A10
■
Parts description and reading in schematic diagram ........................................ A2
■
Schematic diagrams .................................................................................... A3-A6
■
Printed wiring board diagrams .................................................................... A7-A8
■
Pins description of ICs, transistors, diodes ...................................................... A9
- NOTE -
The different points between the previous model
LV-S3
and the new model
LV-S4
as follows;
- The electrical circuit (the LCD panels and the IN/OUT terminals)
- The lamp, lamp ballast and fan controls
- The optical parts
S-VIDEO IN
RGB IN
RGB IN
/
COMPONENT IN
COMPUTER
/
COMPONENT
COMPONENT
AUDIO IN
VIDEO IN
SERVICE PORT
RESET
AUDIO
IN
COMPUTER/ S-VIDEO/
COMPUTER/ S-VIDEO/
COMPONENT IN
COMPONENT IN
AUDIO IN
VIDEO
SERVICE PORT
RESET
AUDIO OUT
(VARIABLE)
MONITOR OUT
MONITOR OUT
LV-S3
LV-S4
Summary of Contents for LV-S4
Page 1: ...Multimedia Projector SERVICE MANUAL Original Version FILE NO Model No LV S4 ...
Page 49: ... 49 BA9743AFV DC DC Converter IC371 IC Block Diagrams BA7078AF Sync Detector IC5301 ...
Page 50: ... 50 IC Block Diagrams LM4865 Audio Amplifier IC5003 PW168A Scaler Main CPU IC301 ...
Page 52: ...SERVICE MANUAL LV S4U LV S4E ...