Iiyama LPX100 User manual

Maintenance Manual
Multimedia Projector
LPX100
December 2000
IIYAMA CORPORATION

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IIYAMA Co., Ltd.
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PC-98 is a trademark of NEC Corporation.
Repair Work Safety and Safety Checks
When performing any servicing, basic safety precautions should always
be followed, including the following:
(1) Be careful of high temperature sections.
Do not touch the lamp immediately after it has been used. It will be extremely hot.

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(2) Observe cautions.
Some parts require careful handling at the time of servicing.
Cautions about these parts are indicated in the labels or by marking on the cabinet, chassis,
or parts. Be sure to observe these cautions and cautions in the Instruction Manual.
(3) Be careful of electrical shock.
When the power is turned on and maintenance service is performed with the cover
removed, be sure to wear a pair of gloves. Be sure to disconnect the plug when replacing
parts.
(4) Use specified parts only.
Parts used in this product are selected from safety point of view, such as of inflammable or
voltage resistant characteristics. Therefore, use only specified parts for replacement.
(5) Put parts and wirings back after servicing.
Some parts make use of insulation materials such as tubing and tape for the sake of safety.
Some other parts are mounted in a floated state from the PCB.
In addition, internal wiring is laid properly by clamp or the like to avoid contact with
heating parts and high-voltage parts.
Be sure to put them back as before.
(6) Perform safety check after servicing.
Check that screws, parts, and wiring removed for servicing are put back in position.
Check that other components have not been damaged during servicing.
Check insulation between an external metallic sectionsand the blade of the plug before the
power is turned on.

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How to perform insulation check
Unplug the equipment from the outlet and disconnect all the wires and cables connected to
the equipment. Then, check that the insulation resistance between each plug and the
externally exposed metallic sections(Note) of respective terminals is 10 MΩor larger, using
a 500V insulation resistance meter.
Note)Externally exposed metallic sections: VIDEO input terminal, S-VIDEO input
terminal, PC input terminal, test terminal

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Table of Contents
1. Overview...............................................................................................................1
1.1 Functional Structure of LPX100......................................................................................1
2. Servicing...............................................................................................................2
2.1 Outline of Servicing.........................................................................................................2
2.2 Outline of Operation........................................................................................................3
3. Function Descriptions of Replacement Parts........................................................4
3.1 Replacement Parts............................................................................................................4
3.1.1 First Category Replacement Parts..............................................................................4
3.1.2 Second Category Replacement Parts..........................................................................8
3.1.3 User-replaceable Parts................................................................................................8
3.2 List of Replacement Parts................................................................................................9
3.2.1 First Category Replacement Parts..............................................................................9
3.2.2 Second Category Replacement Parts........................................................................10
3.2.3 User-replaceable Parts..............................................................................................10
4. Diagnosis............................................................................................................ 11
5. Troubleshooting ..................................................................................................13
5.1 Troubles when AC Power Cord is connected (Standby Mode).....................................13
5.2 Troubles when the Power is turned on...........................................................................14
5.3 Adjustment after Parts Replacement..............................................................................18
5.3.1 First Category Replacement Parts............................................................................18
5.3.2 Second Category Replacement Parts........................................................................19
5.3.3 User-replaceable Parts..............................................................................................19
6. Repair.................................................................................................................20
6.1 Test Equipment and Materials .......................................................................................20
6.2 Parts / Units Replacement..............................................................................................20
6.2.1 Work prior to Repair.................................................................................................20
6.2.2 Instrument Disassembly Procedure..........................................................................20
6.2.3 Replacement Procedure............................................................................................20
6.2.4 Outline of Test Mode Menu .....................................................................................21
6.3 Adjustment Procedure....................................................................................................25
6.4 Checks and Adjustments................................................................................................27
6.4.1 Input Power Terminal Continuity Check..................................................................27
6.4.2 Equipment Connections ...........................................................................................27
6.4.3 Environment.............................................................................................................28
6.4.4 Verification of Basic Operation................................................................................28
6.4.5 ASO Adjustment Value Input...................................................................................29
6.4.6 COM Adjustment.....................................................................................................29
6.4.7 REVCOM Adjustment.............................................................................................30
6.4.8 CLDLY Adjustment .................................................................................................31
6.4.9 REVCLDLY Adjustment .........................................................................................32
6.4.10 CK-PHASE Adjustment.........................................................................................33
6.4.11 NRS Adjustment.....................................................................................................33
6.4.12 VIDR Adjustment (White Balance Adjustment)....................................................34
6.4.13 GHOST Adjustment...............................................................................................35
6.4.14 REVGHOST Adjustment.......................................................................................35
6.4.15 Adjustment Value Storage......................................................................................36

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6.4.16 Interlock Switch Operation Check.........................................................................36
7. Verification Test...................................................................................................37
7.1 Test Equipment and Materials .......................................................................................37
7.2 Test Equipment Connection...........................................................................................38
7.3 Environment...................................................................................................................39
7.4 Outline of Verification Test............................................................................................39
7.5 Inspection / Verification Procedures..............................................................................41
7.5.1 Temperature Alarm Test...........................................................................................41
7.5.2 Safety Test, Dielectric Strength Test........................................................................41
7.5.3 Insulation Resistance Test........................................................................................42
7.5.4 Leak Current Test.....................................................................................................42
7.5.5 Power Consumption Test..........................................................................................42
7.5.6 Ground Continuity Test............................................................................................43
7.5.7 Foreign Material Verification...................................................................................43
7.5.8 Test Equipment Connection .....................................................................................43
7.5.9 FAN Alarm Function................................................................................................43
7.5.10 FAN Alarm Release Function and Lamp ON Operation.......................................44
7.5.11 Drop Impact Test....................................................................................................44
7.5.12 Tilt Foot Function...................................................................................................44
7.5.13 Focus Ring Function ..............................................................................................45
7.5.14 Zoom Ring Function ..............................................................................................45
7.5.15 Panel Key Function................................................................................................45
7.5.16 Remote Control Operation .....................................................................................46
7.5.17 Serial I/F Function..................................................................................................46
7.5.18 Optical Performance Verification, Image Quality..................................................47
7.5.19 Dust ........................................................................................................................47
7.5.20 Chromaticity and Color Shading............................................................................52
7.5.21 Pixel Focusing........................................................................................................52
7.5.22 Convergence...........................................................................................................53
7.5.23 Stray Light..............................................................................................................53
7.5.24 Illuminance, Contrast, Perimeter Illuminance Raito Measurement.......................54
7.5.25 Light Leak ..............................................................................................................55
7.5.26 PC Image Verification, Flicker Verification...........................................................55
7.5.27 Tone Reproduction, White Balance........................................................................55
7.5.28 Jitter, Picture Position.............................................................................................55
7.5.29 Color Reproduction................................................................................................56
7.5.30 U-XGA...................................................................................................................56
7.5.31 31kHz, Synchronous Polarity Discrimination........................................................56
7.5.32 Keystone.................................................................................................................57
7.5.33 AUTO SYNC.........................................................................................................57
7.5.34 Economy Mode ......................................................................................................58
7.5.35 Language................................................................................................................58
7.5.36 Projection Mode.....................................................................................................59
7.5.37 Video Image Verification (NTSC), Jitter, B&W Play Back...................................59
7.5.38 Skin Tone Reproduction, HPOSITION.................................................................60
7.5.39 Sound Volume ........................................................................................................60
7.5.40 S-Video Input Verification......................................................................................60
7.5.41 PAL Verification.....................................................................................................61
7.5.42 SECAM Verification ..............................................................................................61
7.5.43 PAL N Verification.................................................................................................62
7.5.44 NO SYNC Verification...........................................................................................62

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7.5.45 PC OUT Verification..............................................................................................62
7.5.46 Audio Output Terminal Verification.......................................................................63
7.5.47 Built-in Speaker, VIDEO Sound Verification........................................................63
7.5.48 PC Audio Verification............................................................................................63
7.5.49 Plug&Play Verification...........................................................................................64
7.5.50 Preshipment Settings..............................................................................................64
7.5.51 Accessories.............................................................................................................65
7.5.52 External Appearance Verification ..........................................................................65
8. Packaging and Transportation............................................................................66
Appendix 1Disassembling/Assembling Procedures..............................................67
1. Lamp Cover Assembly ....................................................................................................68
2. Front panel Assembly......................................................................................................69
3. Top cover Assembly ........................................................................................................70
4. ASO-02 PKG...................................................................................................................71
5. Intake Fan (BM5125).......................................................................................................72
6. Lamp Bay Fan (BM5125)................................................................................................74
7. Optical Engine Assembly ................................................................................................78
8. ASM-02 PKG ..................................................................................................................79
9. Fan (109P0412H602).......................................................................................................80
10. Lamp Power Supply (PHG151G10)..............................................................................81
11. Main Power Supply (MPF1615)....................................................................................85
12. ASC-02PKG ..................................................................................................................90
13. Sirocco Fan....................................................................................................................91
14. Tilt Foot Assembly.........................................................................................................92
Appendix 2Adjustment Value Form.......................................................................93

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1. Overview
1.1 Functional Structure of LPX100
Operation
Input operation
by switches
or remote-control keys
Processing
Image Processing
Audio Processing
Projection
Projection
Processing
PC
VIDEO
PC Image/Audio Signals
RGB
Video Image/Audio Signals
NTSC, PAL, SECAM
Composite or Y/C separated
Screen

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2. Servicing
2.1 Outline of Servicing
The servicing work is basically performed through the following steps.
The repair should be done basically by replacing acomponent which includes a faulty part.
For replacement parts, refer to “3.2 List of Replacement Parts”.
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Start of Servicing
Diagnosis
Identify problems.
Troubleshooting
Look into causes of problems.
Repair and Adjustment Test
Replace acomponent which includes a faulty
part and perform required adjustments and
verifications.

Verification Test
Verify that functions and performance meet
the specifications.
Completion of Servicing

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2.2 Outline of Operation
1. Connect the power cord to the LPX100 projector.
The POWER LED lights up in order of red, green, and red. (Standby mode)
2. Press the <ON/STANDBY> key.
The lamp is turned on and the POWER LED lights up green.
The Lamp LED lights up green.
When the PC input or the VIDEO input is selected and the input signal from the PC or
the video is not received, the whole screen turns blue and the message “XX signal is
not input.”is displayed.
3. Select the input.
Select PC or VIDEO to display the image.
4. Make adjustments.
For user adjustments, press the <MENU/ENTER> key to display the Menu, and then
select the desired adjustment item by the or key and press the
<MENU/ENTER> key to confirm the entry. To select an item, use the or key.
To make adjustments, use the or  key.
For service personnel adjustments, use (1) the <ON/STANDBY> + <ENTER> key
combination, (2) the <KEYSTONE> + <AUTO SYNC> key combination, and (3)
the <SOURCE> + <KEYSTONE> key combination continuously to enter the Test
mode. The procedural steps are the same as for user adjustments.
5. Turn off the lamp.
On the completion of the adjustment, press the <ON/STANDBY> key to turn off the
lamp.