Sanyo PLC-XT25 User Manual

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Contents
SERVICE MANUAL ....................................................... 1
Contents ........................................................................ 2
Safety Instructions .........................................................
3
Safety Precautions ......................................................
3
Product Safety Notice .................................................
3
Service Personnel Warning ........................................
3
Specifications ................................................................ 4
Circuit Protections .........................................................
5
Fuse ............................................................................ 5
Thermostat (SW901) ..................................................
6
Lamp cover switch (SW902) .......................................
6
Temperature sensors (TH901, TH902, IC8841) ..........
7
Power failure and fan lock detection ...........................
8
Maintenance .................................................................. 9
Cleaning the Air Filter .................................................
9
Resetting the Filter Counter ........................................
9
Lamp Replacement ..................................................
10
Resetting the Lamp Counter .....................................
11
How to check Lamp Used Time ................................
11
Quick maintenance ...................................................
12
Prohibotion of motor control .....................................
13
Security Function Notice
.............................................. 14
Mechanical Disassembly .............................................
15
Optical Parts Disassembly ...........................................
34
Optical parts locations and directions in the Optical
Unit ........................................................................... 46
Adjustments ................................................................. 49
Adjustments after Parts Replacement ......................
49
Optical Adjustments .....................................................
50
1. Optical axis adjustment .........................................
51
2. Contrast adjustment (POL) ...................................
55
3. Contrast adjustment (WV)
..................................... 58
Electrical Adjustments .................................................
59
Service Adjustment Menu Operation ........................
59
Memory IC (IC1391) Replacement ...........................
59
Circuit Adjustments ...................................................
60
Test Points and Locations .........................................
63
Service Adjustment Data Table .................................
64
Chassis Description .....................................................
78
Chassis over view .....................................................
78
Input & signal processing stage ................................
79
LCD drive stage ........................................................
80
Audio signal processing stage ..................................
81
Lamp control stage ...................................................
82
Fan control stage ......................................................
83
Motor control stage ...................................................
84
Bus control stage ......................................................
85
LED drive & RC control stage ...................................
86
Power supply & power failure circuit .........................
87
Indicators and Projector Condition ...........................
88
Power failure detection system ................................
90
Error information table ..............................................
90
Power failure detection tree ......................................
91
Error History Log ......................................................
92
Diagnosis of Power Failure with RS-232C port .........
93
Diagnosis procedure .................................................
93
Control Port Functions .................................................
94
System Control I/O Port Functions (PW190) ............
94
Parallel I/O Expander Port Functions (TE7783)
........ 95
IIC Bus D/A Converter Port Functions (M62334) ......
96
Parallel Bus Input Expander Port Functions
(TC74LCX541) ......................................................... 96
Waveform .................................................................... 97
Cleaning ...................................................................... 98
IC Block Diagrams .......................................................
99
Electrical Parts List ....................................................
106
Electrical Parts Location .........................................
107
Electrical Parts List .................................................
108
Mechanical Parts List ................................................ 12
9
Cabinet Parts Location ........................................... 12
9
Mechanical Parts List .............................................
135
Diagrams & Drawings ..................................................
A1
Parts description and reading in schematic diagram ...
A2
Schematic Diagrams ...................................................
A3
Printed Wiring Board Diagrams .................................
A11
Pin description of diode, transistor and IC .................
A15
Note on Soldering ......................................................
A16

Sanyo PLC-XT25 Specifications

General

Projection technology	LCD
Contrast ratio (typical)	1000:1
Projector native resolution	XGA (1024x768)
Resolution	1024 x 768 pixels
Dimensions (WxDxH)	302 x 422 x 162 mm
Display diagonal	1 \
Lamp type	UHP
Lamp power	300 W
Light source type	Lamp
Market positioning	Portable

Weight and Dimensions

Weight	9200 g