Philips LC5131, LC-5141 Service Manual

1-1 LC5131/5141

1. Safety guidelines

Portable LCD projector

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics Company** Equipment.
The service procedures recommended by Philips and described in this service manual are effective methods of performing
service operations. Some of these service operations require the use of tools specially designed for the purpose. The special
tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to
minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the
equipment. It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Philips could not
possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible
hazardous consequences of each way. Consequently, Philips has not undertaken any such broad evaluation. Accordingly, a
servicer who uses a service procedure or tool which is not recommended by Philips must first satisfy himself thoroughly that
neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected.

** Hereafter throughout this manual, Philips Consumer Electronics Company will be referred to as Philips.

WARNING

Critical components having special safety characteristics are identified with an by the Ref. No. in the parts list
and enclosed within a broken line* (where several critical components are grouped in one area) along with the
safety symbol on the schematics or exploded views.

Use of substitute replacement parts which do not have the same specified safety characteristics may create shock,
fire, or other hazards.

Standby

/O

n

In

p

u

S

t

ta

tus

Au

to im

age

LC5131/00
LC5141/00

UGO S-light/X-light

Under no circumstances should the original design be modified or altered without written permission from Philips.
Philips assumes no liability, express or implied, arising out of any unauthorized modification of design. Servicer
assumes all liability.

* Broken Line

Contents Page

1. Safety guidelines 1-1

2. Specifications 2-1

3. Warnings & Notes 3-1

4. Mechanical instructions 4-1

5. Block diagrams, Wiring diagram & Oscillograms 5-1

6. Directions for use 7-1

7. Alignments & Protections 8-1

8. Parts lists 9-1

PCS 106 634

Published by Consumer Electronics Printed in The Netherlands©Copyright reserved Subject to modification

PCS 106 633

3122 435 40280

2. Specifications

54

3

21

11 121314

15

10

98

7

6

1

234

5

12

3

4

17.3
Height to
screen (H)

Screen

Width

Screen size

(inches in diagonal dimension)

Height

Main unit

Projection distance (L)

o

0

0

1

2

34

56

1

2

3

4

5

(m)

1.2m

2.7m

3.4m

5.1m

6.8m

Projection distance

Center lens

Projection height

36

80

100

150

200

Screen size

(m)

17.3

o

LC5131/5141 2-1 2-2 LC5131/5141

2.1 Product specifications

Package

UGO LC5141/LC5131

:

2.2 DMD Chip

Relationship between S-video terminal and signal.

Remote Control + 2x AAA batteries

UGO UGO

X-lite S-lite

800 ANSI lumens 800 ANSI lumens
XGA resolution SVGA resolution
Compact design - < 2 dm
Ultra lightweight just 1.3 kg
Easy plug&play
Digital picture enhancement

Dimensions; 227 x 48 x 177 mm (WxHxD) < 2 dm

•
Net weight 1.3 kg; ca 2.86 lbs

•
Advanced compatibility for both data and video input;

•
compatible with main notebook computers
High contrast ratio; 800:1 (Full on/off)

•
Digital picture enhance technologies;

•
Digital Zoom (x10), Digital Freeze, Digital

•
Keystone correction

•
Intuitive Graphic User Interface (GUI) for ease of use

•
Auto voltage for safe usage around the world

•
Robust, reliable technical design

•
Suitable for meeting rooms for 2 to 20 people

•
Kensington lock

•

Technical specifications

DMD™

3

1x 0.67" DMD™

:

LC5141 786,432 pixels,Time sequential
(1024x768)
LC5131 480,000 pixels,Time sequential
(800x600)

3

Executions

Optional acc.:New 130 W UHP lamp

Image diagonal size Projection distance

[inch] [meters] [inch] [meters]

37 0,94 47 1,2

60 1,52 79 2,0

80 2,03 106 2,7

100 2,54 134 3,4

120 3,05 161 4,1

150 3,81 201 5,1

200 5,08 268 6,8

Power cord (1,8m) (2 cords,
Continental Europe and USA)
VGA Cable (1m)
PC Audio cable
Mouse cable set; 1m, PS/2 ; 1m, USB
Audio/Video RCA Cable
(1m,Video/Audio stereo)
S-Video cable (1m)
Soft carrying bag
User Guide (8 languages - CD-Rom,
plus Quick Reference Guide)
LC 5141/00 Global product in native XGA

:

LC5131/00 Global product in native SVGA

:

Product type LC5141 LC5131

Number of

pixels

1024 (horizontal) x

768 (Vertical) x 1

Size 0.67 inches 0.67 inches

A 1024 pixels 800 pixels

B 768 pixels 600 pixels

2.3 Input termina

1. AUDIO IN (stereo mini-jack)

2. Mouse output terminal (mini-DIN9pin)

3. RGB/Y CbCr IN (miniD-SUB15pin)

4. S-VIDEO IN (S-video terminal)

5. VIDEO IN (video RCA x 1)
Relationship between RGB input terminal and signal

800 (horizontal) x

600(Vertical) x 1

Pin No. Single

1 GND

2 GND

3 Luminance signal

4 Chrominance signal

2.4 Projection size and projection distance

The projection size ranges from a minimum of 36 inches to a
maximum of 300 inches. The focusing projection distance is
between 1.2 and 6.8 meters from the lens surface. Install
within this range.

Brightness : 800 ANSI lumens
Contrast : 800:1 (Full on/off )
Lamp : 130 W UHP lamp

End user replaceable1000 hours

Lens : F3.0 ;f=23mm

Fixed Focal length; Manual Focus

• Horizontal projection position: Left-right symmetry with
lens in center.

• Vertical projection position (for XGA)

Proj. Dist. 1,2 - 5,8m; Diagonal
(42 - 200)"

Digital features:Digital Zoom (x10), Digital Freeze,

Input signals

Video

:

NTSC 3.85, 4.43 /PAL BG, N, M /Secam
in 4:3 and 16:9 formats

Data

:

PC and Mac compatible, Multi scan
VGA, SVGA, XGA, SXGA via high
advanced scaling technology.
Auto image control Hor. scan rate:
15-91 kHz; Vert. Refresh rate 50-85 Hz.

Power in

Input connections

Video

Data

Mains
Specialities

Dimensions
Net weight

:

:

:

:
:

:
:

110-120 V / 220-240 V; 50/60 Hz; 180 W

S-Video (Y/C DIN)/Video (RCA)/ Stereo
Audio (2x RCA)/ YCbCr
Mini sub-D data (15 pin)/PC Stereo
Audio (M3.5 stereo jack) / Serial mouse
(9pin Mini DIN); USB port / PS/2
Mains input socket (3 pin)
48 mm Ultra Thin Profile
800 : 1 Contrast Ratio
Advanced compression technology for
full automatic adjust multi scan
data input handling, VGA up to SXGA
resolutions to full screen
Intuitive Graphic User Interface (GUI)
for ease of use
Full plug&play compatible (DCC 1 / 2b)
Full Mirror function
Acoustical Noise <39 dBA
227x 48 x 177 mm (WxHxD); <2 dm3
1,3 kg; ca 2,86 lbs

Pin
No.

PCS 106 635 PCS 106 636

Single Pin No. Single

1 Red 9 No Connection

2 Green 10 Digital GND

3 Blue 11 GND

4 GND 12 SDA

5 GND 13 Horizontal Sync

6 Red GND 14 Vertical Sync

7 Green GND 15 SCL

8 Blue GND

Screen

size

Projection distance L m

Dimension

H cm

Inches Meters Millimeters

36 1.2 99

60 2.0 169

80 2.7 225

100 3.4 281

120 4.1 337

150 5.1 422

200 6.8 562

•

These values are based on design values, and their error
is within +/-5%.
Projection distance and projection size

3. Warnings & Notes

LC5131/5141 3-1 4-1 LC5131/5141

4. Mechanical Instructions

Warnings

1.

Safety regulations require that the unit should be returned in
its original condition and that components identical to the
original components are used. The safety components are
indicated by the symbol .

2. ESD

All ICs and many other semiconductors are sensitive to
electrostatic discharges (ESD). Careless handling during
repair can drastically shorten the life. Make sure that during
repair you are connected by a pulse band with resistance to
the same potential as the earth of the unit. Keep components
and tools also at this same potential.

3. When repairing a unit, always connect it to the mains voltage

via an isolating transformer.
The lamp supply and the lamp housing are not mains
isolated.

4. Be careful when taking measurements in the high-voltage

section.

5. Never replace modules or other components while the unit is

switched on.

6. When making settings, use plastic rather than metal tools.

This will prevent any short circuits and the danger of a circuit
becoming unstable.

7. After repair the wiring should be fastened once more in the

cable clamps for this purpose.

8. In order to prevent measuring errors, the heat sinks should

not be used as reference points for measurements.

9. The Lamp house and the lamp get hot during operation.

Please ensure that they are cooled down before servicing.

Notes

1.

The direct voltages and oscillograms should be measured
with regard to earth (4), or hot earth (5) as this is called.

2. The semiconductors indicated in the circuit diagram and in the

parts lists are completely interchangeable per position with
the semiconductors in the unit, irrespective of the type
indication on these semiconductors.

4.1 Preparations and Cautions

Items to have on hand:

1. Number 1 and 2 Philip’s head screwdrivers.

2. Precision screwdrivers (Philip’s head and flat head)

3. Wristband to remove static electricity.

Cautions during disassembly and assembly.

1. When carrying out operations remove the power lamp
beforehand.

2. Some parts may still be hot immediately after use. Be
sure all parts have cooled sufficiently before starting
operations.

3. Make sure all parts, screw tightenings and wirings are in
the original position.

4. Cautions have been included concerning areas which
require particular care when handling parts and carrying
out operations. Be sure to observe all cautions.

5. Special parts which are specified for the LC5131/LC5141
models should not be attached to other models.

6. Do not attempt to remodel the equipment.

4.2 Disassembly, Assembly

1. Front Panel Section (See Fig 1 and Fig 1-A).
Remove the screws (S-8: 2 screws) as shown in Fig 1.

2. Upper cover Section (See Fig 2)
Remove the screws (S-8, 3 screws, louver screw) as
shown in Fig 2.
Remove the upper cover as shown in Fig 2.

Caution: Be careful not to disconnect or break the speaker

Upper cover

Spacer D/M

S-8

S-1

Louver

screw

Cable

3. Speakers, Buttons, etc. (See Fig 3)
Remove the S-20 as shown in Fig 3 and then remove
the speaker button OP and LED lens.
Also push the catches on the front button to remove.

S-20

Speaker Assy

LED
lens

Button
OP

S-8

Fig 2

S-20

10. The lighthouse (optical part) is extremely sensitive to dust.

This part should only be opened in a dust-free environment
(class 100 according to the US federal standard 209).

S-8

Remove the front panel as shown in Fig 1-A.

2

1

Front panel

Caution: Be careful to disconnect the IR cable.

Fig 1

Front foot

Upper cover

Fig 3

Fig 1-A

PCS 106 637 PCS 106 638

LC5131/5141 4-2 4-3 LC5131/5141

4. Disassembly of the front panel section (See Fig 4)
Remove the screw (S-12: 1 screw) as shown in Fig 4
and then remove the front door.
Remove the IR board. (S-4: 1 screw)
Remove the plates. (S-2: 2 screws)
Remove the front hooks on the left and right.
(S-7: 1 screw)

S-7

S-22

S-12

Front door

Fig 4

5. F/E board (See Fig 5)

Remove the screws (S-13:1screws, S-5:2screws) shown
in Fig 5 and then remove the connectors.
Remove the connector panel.
(S-13: 1 screw, RGB spacer: 2 spacers)

S-13

S-18

S-5

S-18

S-13

RGB spacers

S-5

Connector
panel

S-2

S-7

S-4

7. Lens Base Section (See Fig 7)
Remove the screws (S-7: 4 screws) as shown in Fig 7
and then remove the lens base.

Caution: Be careful when disassembling and assembling

equipment that there is no catching of wires, etc.
Do not remove the spherical mirror on the inside
of the lens base or the cylinder mirror from the
lens base as this could cause maladjustments and
shadows in the corners of the screen.

S-7

S-7

Lens
Base Section

S-7

Fig 7

8. Heat sink (See Fig 8)
Remove the screws (S-11: 2 screws) as shown in Fig 8

and then remove the heat sink.

Caution: Be careful of the attachment direction of the heat

sink

Heat sink A

S-11

10. DMD, F/M board (See Fig 10)
Remove the screws (S-9: 4 screws) shown in Fig 10

and remove these items from the lens base.

Caution: Be careful not to avoid direct finger contact with

the elastomer, the DMD surfaces and terminals or
the F/M board terminals.
Also be careful of dust or dirt adhering during
attachment.
The DMD, elastomer and F/M board have a direct
influence on the image and require special care
when handling.

F/M PWB

Elastomer

DMD

F/M Hold

Holder
Elastomer

S-9

Fig 10

11. Projection Lens (See Fig 11)
Remove the screws (S7: 3 screws) shown in Fig 11

and remove the projection lens.

Caution: When assembling be careful to avoid breaking the

spherical mirror on the inside of the lens base.

12. Color Wheel Section (See Figs 12 and 13)
Remove the screws (S-9: 3 screws) shown in Fig 12
and then remove the color wheel from the lens base.
This is a sticky connection, so pull carefully.
Remove the screws (S-4: 2 and S-14:1 screws) shown
in Fig 13 and then remove the wheel cover from the
color wheel.
Remove the wheel screw shown in Fig 13 and then
remove the wheel sensor.

Caution: Excessive tightening of screws during assembly

could cause the color wheel to contact other parts
so that it does not rotate properly. Assemble the
parts to be parrallel. When replacing the color
wheel and wheel sensor, readjustments are
required. (See page 6).

Color wheel section

S-9

S-9

Wheel cover

Fig 12

Wheel sensor

F/E board

6. Lamp Driver (See Fig 6)
Remove the screws (S-3, 17: 1 screw each) as shown in
Fig 6 and then remove the lamp driver.

S-3

Lamp
driver

S-17

Fig 5

Fig 6

9. DMD chip (See Fig 9)
Install the DMD chip so that the A portion is at the
lower right as shown in Fig 9.

Fig 9

Heat sink B

Fig 8

A

S-7

S-7

Projection Lens

Fig 11

S-14

S-4

Fig 13

PCS 106 639

PCS 106 640

LC5131/5141 4-4 5-1 LC5131/5141

5. Block diagrams, Wiring diagram & Oscillograms

13. Light Tunnel, Aperture (See Fig 14)
Remove the screws (S-7: 3 screws) shown in Fig 14
and then remove the light tunnel from the lens base.
Remove the screws (S- : 2 screws) shown in Fig 14
and then remove the aperture from the lens base.

Caution: Do not disassemble the light tunnel.

Do not touch the glass.

S-7

Light tunnel

Aperture

S-4

S-7

Fig 14

14. Lamp House Section (See Fig 15)
Remove the screws (S-7: 3 screws) shown in Fig 15
and then remove the lamp house from the lower cover.
Remove the screw (S-15: 1 screw) shown in Fig 15
and then remove the thermistor and thermistor plate.
Remove the screw (S-7: 1 screw) shown in Fig 15 and
then remove the ballast lock base.
Removing the lamp house causes the 40 square fan
assembly to come out.

Caution: Be careful of the wiring method for the 40 square

fan. The fan passes under the lamp house from
below.

S-7

Lamp hous

S-15

40FAN(L)

S-7

Thermistor Assy

Thermistor plate

S-15

Fig 15

15. Power source section (See Fig 16)
Remove the screws (S-7: 2 screws) shown in Fig 16
and then remove the fan base from the cover.
Remove the screws (S-5, 10: 1 screw each, Spacer
D/M: 2 spacers) and then remove the power source.

Note: The power supply fan must be mounted with the wires

up. The lamp fan must be mounted with the wires
down.

S-7

S-5

Spacers D/M

Power source

40FAN DC

S-7

Fan base

Fan
gard

S-10

S-21

Fig 16

16. Front and Rear Foot, etc. (See Fig 17)
As shown in Fig 17 remove the front foot in the
following order: (1) Press the catch. (2) Push out.

S-7

Rear foot

Front foot

Lamp limit switch

2

1

Fig 17

Rotate the rear foot and remove.
Remove the screw (S-7: 1 screw) shown in Fig 17 and
remove the lamp limit switch.

5.1 Optical system principle block diagram

Description of function

1. Lamp
Light source: Flashes 300 times per second as AC
lamp.

2. RGBW color wheel
Divides light into the RGBW components using color
filters.
The W component allows a bright white to be
reproduced.
A rotation detecting sensor is used to time the lamp
which is turned OFF at the color filter seam.
The maximum speed is 7,200 rpm.

3. Condenser lens and light tunnel
Collects light divided into RGBW components by the
color filter and projects them on the effective surface of
reflection mirror 1.
Use of the light tunnel lens increases the peripheral
intensity of illumination. It reduces the difference of
brightness between the screen center and periphery,
reproduces a clear view of even the corners of the
screen.

4. Reflection mirror 1 and 2
Reflects light beamed on the mirror effective surface, to
the DMD effective surface.

5. DMD chip
Reflects the light by switching on and OFF according to
the input source at the ratio of color components for
each dot.

6. Projection lens
Enlarges and projects light from the DMD.

7. Screen
The projected light (RGBW components) forms a picture
with colors synthesized through afterglow.

PCS 106 641 PCS 106 642