Philips LC5231, LC-5241 Service Manual

1-1 LC5231/5241

1. Safety guidelines

IMPORTANT SAFETY NOTICE

Portable LCD projector

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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.

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.

LC5231/00 LC5241/00

UGO S-lite/X-lite

Impact Series

* 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 5-1

6. Directions for use 7-1

7. Alignments & Protections 8-1

8. Parts lists 9-1

PCS 107 321

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

PCS 107 320

3122 435 40420

2. Specifications

LC5231/5241 LC5231/5241

2-1 2-2

2.1 Product specifications

UGO UGO

X-lite Impact S-lite Impact

1000 ANSI lumens 1000 ANSI lumens XGA resolution SVGA resolution Compact design - < 2 dm Ultra lightweight just 1.3 kg Easy plug&play Digital picture enhancement

Dimensions; 230 x 48 x 177 mm (WxHxD) < 2 dm

• Net weight 1.5 kg; ca 3.2 lbs

• Advanced compatibility for both data and video input; compatible

• with main notebook computers High contrast ratio; 650:1 (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™

Brightness : 1000 ANSI lumens Contrast : 650:1 (Full on/off ) Lamp : 130 W short arc lamp

Lens : F2.4-2.6 ; f = 28-33 mm

Digital features

Lens

Image size

1x 0.67" DMD™

LC5241 786,432 pixels,Time sequential (1024x768) LC5231 480,000 pixels,Time sequential (800x600)

End user replaceable1000 hours

Manual Focus; Manual Zoom Proj. Dist. 1,2 - 9,4m; Diagonal (25 - 200)"

Digital Zoom (x10), Digital Freeze, Digital Keystone Correction

LC5231 LC5241

Manual zoom (x1.2) Manual focus F = 2.4 - 2.6 f = 27.5 - 33.0 mm (1.1 - 1.3 inch)

Minimum 25" (Projection distance 1.2m (3.9 feet) at tele)

Maximum 200" (Projection distance 9.8m (32.2 feet) at wide

Input signals

Video

Data

Power in

NTSC 3.85, 4.43 /PAL BG, N, M /Secam

in 4:3 and 16:9 formats 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. 110-120 V / 220-240 V; 50/60 Hz; 180 W

Input connections

Video

Data

Mains Specialities

Dimensions Net weight Package : UGO LC5241/LC5231

Executions

Optional acc.

Manual zoom (x1.2) Manual focus F = 2.4 - 2.6 f = 27.5 - 33.0mm (1.1 - 1.3 inch)

Minimum 26" (Projection distance 1.2m 3.9 feet) at tele

Maximum 200" (Projection distance 9.4m (30.8 feet) at wide)

S-Video (Y/C DIN)/Video (RCA)/ Stereo

Audio (2x RCA)/ YCbCr (15 pin) 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

650 : 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 230 x 48 x 177 mm (WxHxD); <2 dm3

1,5 kg; ca 3,2 lbs

Remote Control + 2x AAA batteries 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)

LC5241/00 Global product in native XGA

LC5231/00 Global product in native SVGA

New 130 W short arc lamp

2.2 DMD Chip

Product type LC5241 LC5231

Number of

pixels

Size 0.67 inches 0.67 inches

A 1024 pixels 800 pixels

B 768 pixels 600 pixels

1024 (horizontal) x

768 (Vertical) x 1

IMAGE

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)

11 121314

234

Relationship between RGB input terminal and signal

Pin No. 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

800 (horizontal) x

600(Vertical) x 1

1 pixel

Relationship between S-video terminal and signal.

Pin No. Single

1 GND

2 GND

3 Luminance signal

4 Chrominance signal

PCS 107 322 PCS 107 323

2.4 Projection Size and Projection Distance

There is an error of ±5% for the design value.

• The horizontal projection position is left-right symmetrical

• with the lens in the center. When bright light enters the remote control

• light-intercepting section, it might not be possible to use the remote control. Be careful when locating the unit near lighting.

LC5231/5241 LC5231/52412-3 3-1

The projection distances for correct focus (focal point) are

• the following values from the lens surface. LC5231: 1.2 m ~ 9.8 m LC5241: 1.2 m ~ 9.4 m Set within this range.

This diagram expresses the projection distance and screen size for Tele (smaller screen) and Wide (larger screen) positions of the zoom lens.

3. Warnings & Notes

Warnings

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.

Notes

The direct voltages and oscillograms should be measured with regard to earth ( ), or hot earth ( ) 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.

Screen

Normal value(inches

25 50.8 x 38.1 1.20 7.6 - -

26 52.8 x 39.6 1.22 7.6 1.2 6.8

40 81.3 x 61.0 1.6 ~ 1.9 12.0 1.5 ~ 1.9 10.4

60 121.9 x 91.4 2.4 ~ 2.9 18.0 2.3 ~ 2.8 15.5

80 162.6 x 121.9 3.2 ~ 3.9 23.9 3.1 ~ 3.7 20.7

100 203.2 x 152.4 4.1 ~ 4.9 29.9 3.9 ~ 4.7 25.9

120 243.8 x 182.9 4.9 ~ 5.9 35.9 4.7 ~ 5.6 31.1

150 304.8 x 228.6 6.1 ~ 7.4 44.9 5.9~ 7.1 38.9

200 406.4 x 304.8 8.2 ~ 9.8 59.9 7.9 ~ 9.4 51.8

Screen size

Width x Vertical

LC5231 LC5241

Projection distance (m)Wide ~ Tele

Dimension H (cm)

Projection distance (m)Wide ~ Tele

Dimension H (cm)

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. Various parts get hot during operation. Please ensure that

they are cooled down before servicing.

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).

PCS 107 324 PCS 107 325

4. Mechanical instructions

LC5231/5241 LC5231/52414-1 4-2

4.1 Preparation and Caution

Tools be prepared:

1. Phillips screwdrivers Nos. 1 and 2.

2. Slotted head screwdriver

3. Electrostatic elimination wrist band

4. Hexagonal wrench (width across flats : 5 mm)

4.3 Disassembly and Assembly

Remove the front panel section (See Figs 1, 1-A).

1. Remove the screws shown in Fig 1 (S-8: 2 screws).

4.2 Disassembly and Assembly order

Cautions

1. When removing the lamp driver, remove the lamp beforehand.

2. When removing the DC power unit, remove the fan base beforehand.

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

Remove the upper cover assy (see Fig 2).

1. Remove the three S-8 screws and remove the Louver Screws.

2. Lift up the Upper Cover Assy and remove the connector (POSP) of the speaker assy from the F/E PWB.

Caution: When lifting up the Upper Cover Assy, be careful

not to pull the cable of the Speaker Assy.

Fig. 2

Remove the Speaker Assy and buttons (see Fig 3).

1. Peel off the Speaker Sheet.

2. Remove the S-20 bush nut.

3. Push the catch down to remove the front foot knob.

Caution: After replacing the Speaker Assy, be sure to

attach the Speaker Sheet.

Disassembling the front panel section (see Fig 4)

1. Remove the S-12 screw.

2. Remove the Front Door Assy.

3. Remove the IR PWB (one S-4 screw).

4. Remove the left and right front hooks (one S-7 screw each).

Fig. 4

Remove the F/E PWB (see Fig 5).

1. Remove the cables (connectors: PORM, PODC, PODB, POLA, POLB, POFA, POFB) from the F/E PWB.

2. Remove the two S-5 screws and one S-13 screw.

3. Remove the cable (POPA) from the F/E PWB.

4. Remove the S-13 screw and two spacer RGBs.

5. Remove the Connector Panel.

Caution: Be careful not to forget to insert the F/E PWB

Shield between the F/E PWB and the DC PSU (insulation sheet DC 1,2). Be careful that the F/E PWB Shield does not get caught between the sheet DCs 1 and 2.

Fig. 1

Caution: When removing the front panel section, be careful

to disconnect the IR Cable Assy.

Fig. 3

Fig. 5

Fig. 1A

PCS 107 326 PCS 107 327

LC5231/5241 LC5231/52414-3 4-4

Remove the Lamp Driver (see Fig 6).

1. Remove the S-3 and the S-17 screws (one of each).

2. Remove the cable from the power source (connector: CN1).

Caution: If the lamp is connected, it is not possible to

remove the Lamp driver. Remove the lamp beforehand. Be sure to attach the Radiation Sheet L/D to the Lamp Driver and Insulate Sheet L/D. Be careful about wiring of the cables for the Lamp Driver O so that it does not get caught between the Lamp House Assy and Upper Cover Assy.

Remove the lens base section (see Fig 7).

1. Remove the four S-7 screws.

2. Remove the lens base section.

Caution: When attaching or removing the lens base, be

careful of the cable.

Fig. 6

Remove the heat sink (see Fig 8).

1. Remove the two S-11 screws.

Caution: Be careful about the heat sink attachment

position.

Fig. 8

Remove DMD set (see Fig 9).

1. Remove the four S-9 screws.

2. Remove the F/M retainer and remove the DMD set from the lens base section.

Caution: Soiling and dust on the DMD, elastomer or F/M

PWB terminals can have a direct influence on the image. Be careful during handling.

DMD Chip Attachment Direction (See Figs 10, 11)

1. The attachment direction of the DMD chip differs for XGA and SVGA. For XGA see FIG 10. For SVGA see FIG 11

Fig. 10

Fig. 11

Remove the Projection Lens Unit (see Fig 12).

1. Remove the three S-7 screws retaining the Projection Lens Unit.

Remove the color wheel section (see Figs 13, 14).

1. Remove the three S-9 screws retaining the color wheel section.

2. Remove the S-14 screw and S-4 screw.

3. Remove the Wheel Cover from the Color Wheel Unit.

4. Remove the Wheel Sensor Screw.

5. Remove the Wheel Sensor Board Assy from the Wheel Cover.

Caution: When removing the color wheel section, be

careful not to touch or damage the Condenser Lens Assy.

Fig. 13

Fig. 7

Caution: When assembling, be careful not to damage the

mirrors on the lens base interior.

Fig. 14

Fig. 9

Fig. 12

PCS 107 328 PCS 107 329

LC5231/5241 LC5231/52414-5 5-1

5. Block diagrams, Wiring diagram

Remove the Condenser Lens Assy (see Fig 15).

1. Remove the three S-7 screws retaining the Condenser Lens Assy.

Fig. 15

Remove the lamp house section (see Fig 16).

1. Remove the three S-7 screws retaining the lamp house section.

2. Remove the S-15 screw retaining the Thermistor Plate.

3. Remove the S-15 screw retaining the Thermistor Assy.

4. Remove the 40 Fan Assy (40 Fan) from the Lamp House Assy.

Caution: Be careful of the 40 FAN wiring method and

attachment direction.

Remove the power section (see Fig 17).

1. Remove the two S-7 screws retaining the fan base.

2. Remove the S-5, 10 screw retaining the DC PSU assy and the two spacer D/M

Fig. 17

Remove the front and rear foot, etc. (see Fig 18).

1. Push down the catches shown by (1) and (2) in the figure

and remove the Front Foot Assy.

2. Remove the S-7 screw retaining the Limit SW Board Assy.

3. Remove the Foot Rubber B.

4. Remove the S-23 screws retaining the Rear Adjuster Unit.

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.

G B R W

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.

Fig. 16

Fig. 18

PCS 107 330 PCS 107 331

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