Sanyo PLV-70,PLV-70L Service Manual

Notice

CORRECTION

SERVICE FLASH ADD INFORMATION

PRODUCTION CHANGE

●

FILE NO.

REVISION-5

Please add this notice to the Service Manual listed below.

Category : Multi-media Projector Issued Date : July / 2005

PLV-70 M4L-7004 Model : PLV-70L Effective from : Chassis No. M4L-70L01

Canada, U.S./Europe,

Destination : Asia, Africa, U.K. REF. NO. : SM5110361

NOTE: Match the Chassis No. on the unit’s back cover with the Chassis No. in the Service

Manual.

If the Chassis. No. does not match the unit’s, additional service literature is required. Only the difference service information is given in this manual. For detailed service information, refer to the original service manual and notice for Models PLV-70, PLV-70L.

Reason of the production change:

As this production change is to comply with RoHS, PWB units and some parts are changed. Major chaged parts are as follows; PWB BOARD Main Board A/V Board I/F Board Control Baord RC Front Baord Connect Board Senser1 Board

FILE WITH ORIGINAL SERVICE MANUAL

SM5110361 for PLV-70 SS5110737 for PLV-70L

PRODUCT CODE PLV-70 PLV-70L 1 122 130 60 1 122 130 70

1 122 131 60 1 122 131 70 1 122 131 62

REFERENCE NO. SM5110361-05

■ Contents

Contents ____________________________________________________ 2 Safety Instructions ____________________________________________ 3 Specifications ________________________________________________ 4 Adjustments after Parts Replacement _____________________________ 5 Circuit Protections ____________________________________________ 6 Fuse _______________________________________________________ 6 Thermal switch _______________________________________________ 6 Interlock switch _______________________________________________ 6 Warning temperature and power failure protection ___________________ 7 Mechanical Disassemblies ______________________________________ 8 Optical Parts Disassemblies ____________________________________ 13 LCD Panel/Prism Ass’y Replacement ____________________________ 18 Lamp Replacement __________________________________________ 19 Optical Adjustments __________________________________________ 20 Electrical Adjustments ________________________________________ 23 Service Adjustment Menu Operation _____________________________ 23 Circuit Adjustments ___________________________________________ 24 Test Points and Locations ______________________________________ 29 Service Adjustment Data Table _________________________________ 30 Electrical Parts List ___________________________________________ 44 Mechanical Parts List _________________________________________ 67 Optical Parts List ____________________________________________ 70

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■ Safety Instructions

SAFETY PRECAUTIONS

WARNING: The chassis of this projector is isolated (COLD) from AC line by using the converter transformer. Primary side of the converter and lamp power supply unit circuit is connected to the AC line and it is hot, which hot circuit is identified with the line ( personnel injury, servicing should be made with qualified personnel.

The following precautions must be observed.

) in the schematic diagram. For continued product safety and protection of

1: An isolation transformer should be connected in the

power line between the projector and the AC line before any service is performed on the projector.

2: Comply with all caution and safety-related notes

provided on the cabinet back, cabinet bottom, inside the cabinet or on the chassis.

3: When replacing a chassis in the cabinet, always be

certain that all the protective devices are installed properly, such as, control knobs, adjustment covers or shields, barriers, etc.

DO NOT OPERATE THIS PROJECTOR WITHOUT T HE PROTECTIVE SHIELD IN POSITION AND PROP ERLY SECURED.

4: Before replacing the cabinet cover, thoroughly

inspect the inside of the cabinet to see that no stray parts or tools have been left inside.

Before returning any projector to the customer, the service personnel must be sure it is completely safe to operate without danger of electric shock.

PRODUCT SAFETY NOTICE

Product safety should be considered when a component replacement is made in any area of the projector. Components indicated by mark ! in the parts list and the schematic diagram designate components in which safety can be of special significance. It is, therefore, particularly recommended that the replacement of there parts must be made by exactly the same parts.

Eye damage may result from directly viewing the light produced by the Lamp used in this equipment. Always turn off Lamp before opening cover. The Ultraviolet radiation eye protection required during this servicing. Never turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer generates high voltages(15kV - 25kV) at its starts. Since the lamp is very high temperature during units operation replacement of the lamp should be done at least 45 minutes after the power has been turned off, to allow the lamp cool-off.

SERVICE PERSONNEL WARNING

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■ Specifications

Projector Type Multi-media Projector

Dimensions (W x H x D) 12.6” x 6.6” x 16.8” (319mm x 168mm x 429.5mm)

Net Weight 17.4 lbs (7.9 kg) PLV-70, 17.1 lbs (7.1 kg) PLV-70L

LCD Panel System 1.21” TFT Active Matrix type, 3 panels

Panel Resolution 1366 x 768 dots

Number of Pixels 3,147,264 (1366 x 768 x 3 panels)

Color System 6 color system (PAL, SECAM, NTSC, NTSC4.43, PAL-M and PAL-N)

High Definition TV SIgnals 480i, 480p, 575i, 575p, 720p. 1035i and 1080i

Scanning Frequency H-sync. 15 ~ 100kHz, V-sync. 50 ~ 100Hz

Projection Image Size (diagonal) Adjustable from 31” to 400”

Horizontal Resolution 800 TV lines (HDTV)

Projection Lens F 1.8 ~2.1 lens with f=48.4mm ~ 62.8mm with motor zoom and focus

Throw Distance 5.0’ ~ 51.3’ (1.5m ~ 15.6m)

Motorized Lens Shift Up and Down

Projection Lamp 200 watts

Input 1 Jacks DVI Terminal (Digital), HDB 15-pin Terminal (Analog) and Stereo Mini Type

Jack (Audio)

Input 2 Jacks BNC Type x 5 (G or VIDEO/Y, B or Cb/Pb, R or Cr/Pr, H and V), Stereo

Mini Type Jack (Audio)

Input 3 Jacks RCA Type x 3 (VIDEO/Y, Cb/Pb, Cr/Pr), RCA Type x 2 (Audio R and L) and

DIN 4-pin (S-Video)

Other Jacks DIN 8-pin (Control port), Wired Remote Jack and Network Board Connector

Jack

Built-in Speakers 2 speakers Stereo (R and L), 2 watts RMS (T.H.D. 10%)

Feet Adjustment 0˚ to 10.5˚

Voltage and AC 100 ~ 120V (3.6A Max. Ampere), 50/60Hz (The U.S.A and Canada)

Power Consumption AC 200 ~ 240V (1.8A Max. Ampere), 50/60Hz (Continental Europe and the U.K)

Operating Temperature 41 ˚F ~ 95 ˚F (5˚C ~ 35˚C)

Storage Temperature 14 ˚F ~ 140 ˚F (-10˚C ~ 60˚C)

● The specifications are subject to change without notice.

This symbol on the nameplate means the product is Listed by Underwriters Laboratories Inc. It is designed and manufactured to meet rigid U.L. safety standards against risk of fire, casualty and electrical hazards.

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■ Adjustments after Parts Replacement

● : Adjustment necessary ❍ : Check necessary

Disassembly / Replaced Parts

Condenser

Lens

Relay

Lens

Polarized glass

R G B

Power Board

Sub Power

Board

Main Board

Condenser lens adjustment ❍ ●

Relay lens a dj us tm en t

❍ ●

Contrast Adjustment

R-Contrast adjustment ●

G-Contrast adjustment ●

B-Contrast adjustment ●

Optical Adjustments

Output voltage adjustment ●

+16 V adjustment ●

Video center adjustment ●

NRS ad justment ●

PC p ed estal adjustment ●

PC gain adjustment ●

Black level a dj ustment ●

PC gamma shift adjustment ●

A/D r eference a dj us tm en t ●

AV pedestal adjustment ●

A/D i nput adjustment ●

Video pedestal adjustment ●

Electrical Adjustments

Video gain adjustment ●

HDTV p edestal adjustment ●

HDTV Gain adjustment ●

Video gamma shift a dj us tment ●

Common center adjustment ● ●

White balance adjustment ❍ ❍

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■ Circuit Protections

This projector is equipped with the following circuit protections to operate in safety. If the abnormality occurs inside the projector, it will automatically turn off by operating one of the following protection circuits.

● Fuse

The fuse is located inside of the projector. When either the LAMP indicator or the READY indicator is not illuminated, fuse may be opened. Check the fuse as following steps. It should be used the specified fuse as follows;

Fuse Part No.: 423 025 1201 TYPE T8AH 250V FUSE LITTEL FUSE INC. TYPE 215008

How to replace the fuse

1. Remove the cabinet top following to “Mechanical

Disassemblies”.

2. Remove the fuse from fuse holder.

To install the fuse, take reversed step in the above.

Fuse

Line Filter Board

● Thermal switch

There is the thermal switch (SW905) inside of the projector to prevent the internal temperature from rising abnormally. When the internal temperature reaches near 90˚C, turn off the AC main power supply automatically. The thermal switch is not reset to normal automatically even if the internal temperature becomes normal. Reset the thermal switch following procedure. Check the resistance between terminals of thermal switch by using the tester. If it has high impedance, thermal switch may be in operative.

How to reset the thermal switch

1. Loosen 2 screws and open the lamp cover.

2. Press the reset button on the thermal switch with a sharp-

pointed tool.

CAUTION:

Before press the reset button, disconnect the AC cord from the projector.

● Interlock switch

The interlock switch (SW902) cuts off the AC mains power supply when the lamp cover is removed. After opening the lamp cover for replacing the lamp ass’y, place the lamp cover correctly otherwise the projector can not turn on.

Lamp cover

Interlock switch

Thermal switch

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Circuit Protections

● Warning temperature and power failure protection

The TEMP WARNING indicator flashes red and the projector will automatically turn off when the internal temperature of the projector exceeds the normal temperature or when stopping cooling fans or when the internal power supply lines are failed.

Check the following possible causes and wait until stopping the TEMP WARNING indicator flashing.

Possible causes

- Air filter is clogged with dust particles. Remove dust from the air filter by following instructions in the “Air filter care and cleaning” below.

- Ventilation slots of the projector are blocked. In such an event, reposition the projector so that ventilation slots are

not obstructed.

- Check if projector is used at higher temperature place (Normal operating temperature is 5 to 35 ˚C or 41 to 95˚F)

If the TEMP WARNING indicator still continues to flash, there may be defects on cooling fans or power supply circuits. Please check fan operation and power supply lines referring to the “Power Supply Lines Chart”.

Air filter care and cleaning

The removable air filter prevents dust from accumulation on the surface of the projection lens and projection mirror. Should the air filter become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may result in internal heat build up and reduce the life of the projector.

To clean up the air filters, follow the cleaning procedure below:

1. Turn the power off, and disconnect the AC power cord

from the AC outlet.

2. Turn the projector up side down and remove an air

filters by pulling the latches of them upward.

Air filters

3. Clean the air filters with brush or wash out the dust and

particles.

4. Replace each air filter properly. Make sure that the air

filters are fully inserted.

CAUTION:

Do not operate the projector with the air filter removed. The dust is stuck on the LCD panel and the mirror, and it may spoil the fine picture image. Do not put the small parts into the air intake vents. It may result in the malfunction of the projector. The air filter is small parts. Take care that children don’t eat or swallow it.

RECOMMENDATION

We recommend to avoid dusty, smoky place for operating the projector. Using in dusty place may cause the picture of poor quality. When using under the dusty or smoky conditions, dust may accumulate on the LCD panel and lens inside it, and may resultantly be projected on the screen together with the picture. When the above symptoms are noticed, please clean up the LCD panel and lens following to the “Cleaning Method”.

-7-

■ Mechanical Disassemblies

Mechanical disassemble should be made following procedures in numerical order. Following steps show the basic procedures, therefore unnecessary step may be ignored.

Caution:

The parts and screws should be placed exactly the same position as the original otherwise it may cause loss of performance and product safety.

Cabinet Top removal

1 Remove 5 screws A, 2 screws B, and loosen 2 screws C,

and then take the Cabinet Top upward off.

Note: If you want to remove the Cabinet Front-Top only, you do not need to remove screws

and Lens Front Cover.

Cabinet Front removal

A. Remove 2 screws B

1 Turn the Lens Front Cover counter-clockwise and to take

it off by pulling forward as shown in Fig.2-1.

2 Remove the Cabinet Front-Top, Lens Cover Holder and

Lens Cover upward off.

3 Remove 2 screws D to take the Cabinet Front off. 4 Remove the RC Board and speakers on the Cabinet

Front.

Fig.1

Lens Front Cover

Fig.2-1

Cabinet Front-Top

Lens Cover Holder

Cabinet Front

Lens Cover

Fig.2-2

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Mechanical Disassemblies

Main Board removal

1 Remove 7 screws to take the Main Board upward.

Main Board

AV, I/F Board & Rear Panel removal

1 Remove 1 screw A and take the Rear Panel ass’y

upward off.

2 Remove 4 screws B to take the fan (FN905) off. 3 Remove 5 screws C and 1 screw D to take AV Board

from the Rear Panel ass’y off.

4 Remove 2 screws E and grounding leads and then

pull up the I/F Board and Holder assy from the bottom cabinet.

5 Remove 4 screws F to take the I/F Board.

Rear Panel Ass’y

FN905

Fig.3

AV Board

I/F Board

Fig.4

-9-

Mechanical Disassemblies

Lamp Ballast Unit removal

1 Remove 4 screws A to take the Ballast Cover upward

off.

2 Remove 2 screws B to take the Fan (FN903) off. 3 Remove the Sub Power Board and Drive Board by

pulling them upward.

Ballast Board

Ballast Cover

FN903

Sub Power Board

Drive Board

Optical Unit removal

1 Remove 2 screws A and 4 screws B(small) and pull the

Optical Unit upward off.

2 Remove 4 screws C to take the Fan (FN906) off. 3 Remove 1 screws D to take the Fan (FN904) off and 2

screws

E to take the air duct off.

Optical Unit

FN906

Fig.5

FN904

Fig.6

-10-

Mechanical Disassemblies

Prism Base removal

1 Remove 2 screws A to take the Prism Base ass’y

upward off.

2 Remove 2 screws B to take the Lens Shift Motor and

Sensor SW Holder from the Base.

Prism Base Ass’y

Motor and Sensor Holder

Power Board removal

1 Remove 3 screws A to take the Power Board off. 2 Remove 4 screws B to take Holder off from the cabinet

bottom.

Fig.7

Power Board

Power Board Holder

Fig.8

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Mechanical Disassemblies

Line Filter Board & Interlock SW & Thermal

SW removal

1 Remove 1 screw A to take Interlock Switch(SW905). 2 Remove 2 screws B to take Filter Board Holder and

remove 2 screws

C to take Filter Board from the Holder.

3 Remove 1 screw D to take Thermal Switch(SW902).

Interlock Switch (SW905)

Filter Board

Holder

Fans (FN901, FN902) removal

1 Remove 4 screws A to take Air-duct Top off. 2 Remove 1 screw B (small) and 1 screw C (big) to take

Duct Cover-A.

3 Remove 2 screws D to take Fan (FN901) off. 4 Remove 2 screws E (small) and 2 screws F (big) to take

Air-duct-A and Fan (FN902) off.

Thermal Switch

(SW902)

Fig.9

A A

Air-duct-A

Duct Cover

-A

FN901

Air-duct Top

Duct Cover-B

FN902

Fig.10

-12-

■ Optical Parts Disassemblies

Optical Filter

Polarized Grass

Part No.

Film side

Before taking this procedure, remove Cabinet Top and Main Board following to the “Mechanical Disassemblies”. Disassembly requires a 2.0mm or 2.5mm hex wrench and a slot screwdriver.

Projection Lens removal

1 Remove Cabinet Front-Top following to the chapter “Mechanical

Disassemblies”.

2 Loosen 2 screws A with 2.5mm hex wrench. 3 Unhook 2 hooks B on the both side of the lens and remove the Projection

Lens ass’y off.

Fig.1

Polarized Glass-In removal

1 Remove each hex screw and pull the Polarized Glass-In ass’y upward. 2 Remove a stopper and take the glass off upward.

Fig.1-2

Fig.2-1

-13-

Optical Pats Disassemblies

Relay Lens disassembly

1 Remove 2 hex screws A and pull the Relay Lens ass’y upward. 2 Remove 2 screws B to take the Lens off from the holder.

Note: There is no mounting direction of the lens.

Holder

Relay Lens

Fig.3-1

Fig.3-2

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Optical Filter(WV)

Polarized Glass

V4Z15B18

1AV4Z15B18

Film

R-PANEL

B-PANEL

G-PANEL

PRISMPRISM

Film side

Optical Pats Disassemblies

Polarized Glass-Out and Optical Filter-Out(WV) removal

1 Remove 4 hex screws A and take the LCD/Prism ass’y off upward. 2 Remove 3 screws B and take the Glass Holder, and then pull the

polarized Glass-Out and the optical filter-out(WV) upward off. These

glasses are mounted for R, G and B LCD panels respectively. Note: To avoid the CG and focus alignments slipping off, please be careful to handle the LCD/Prism ass'y.

Note: Do not replace the LCD panel separately otherwise it can not obtain proper picture.

LCD Panel/Prism Ass’y

Polarized GlassOut

Optical FilterOut(WV)

Fig.4-1 Fig.4-2

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Fig.4-3

Optical Parts Disassemblies

Optical Unit Top removal

1 Remove 7 screws to take the Optical Unit Top off upward.

Condenser Lens disassembly

1 Remove 2 hex screws A and take the Condenser Lens ass’y. 2 Release 4 hooks B to take the Lens off from the holder.

Fig.5

* Lens should be placed

as the flat surface side comes to the holder side.

Condenser Lens

Fig.6-1

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Optical Parts Disassemblies

Locations and Directions

When the optical parts in the optical unit mounting or assembling, the parts must be mounted in the specified location and direction as shown in figure below.

Key No. Description

1 Condenser lens (R) 2 Condenser lens 3 Condenser lens 4 Mirror (B) 5 Optical filter (UV cut) 6 Dichroic mirror (B 7 Dichroic mirror (G) 8 Mirror (W) 9 Condenser lens (IN) 10 PBS (prism beam splitter) 11 Integrator lens (OUT) 12 Integrator lens (IN) 13 Relay lens (IN) 14 Mirror (R)

The cutting corner comes to this side up.

The printed marker comes this side.

Fig.7

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■ LCD Panel/Prism Ass’y Replacement

IMPORTANT NOTICE on LCD Panel/Prism Ass'y Replacement

LCD panels used for this model can not be replaced separately. Do not disassemble the LCD Panel/Prism Ass’y. These LCD panels are installed with precision at the factory. When replacing the LCD panel, should be replaced whole of the LCD panels and prism ass’y at once. After replacing LCD Panel/Prism ass’y, please check the following adjustments.

- Check the “Condenser Lens Adjustment” and “Relay Lens Adjustment” following to chapter “Optical Adjustment”.

- Check the “White Balance Adjustment” and “Common Centre Adjustment” following to chapter “Electrical Adjustment”.

- Check the white uniformity on the screen.

If you find the color shading, please adjust the white uniformity by using the proper computer and “Color

Shading Correction” software supplied separately. The software can be ordered as follows;

COLOR SHADING CORRECTION SOFTWARE

Service Parts No. 645 051 2308

LCD Panel/Prism Ass’y removal

1 Remove the cabinet top and main board following to

“Mechanical Disassemblies”.

2 Remove 4 screws by using the 2.0 mm hex driver and

take the LCD Panel/Prism ass’y off upward from the optical unit.

Note on LCD Panel/Prism Ass’y Mounting

After replacing or installing the LCD Panel/Prism ass'y, please make sure to obtain the best focus in both TELE and WIDE zoom. If the focus adjustment is required, please adjust the positioning of LCD Panel/Prism Ass’y by following the below procedure.

Note: Do not replace the LCD panel separately otherwise it can not obtain proper picture.

Top View

Mounting Procedure:

1 Loosen 4 screws A on the LCD Panel/Prism ass'y with

2.0 mm hex driver.

2 Turn the projector on and project the image with WIDE

zoom, and adjust the FOCUS control to obtain the best focus.

3 Turn the ZOOM control to the TELE position. 4 Move the LCD Panel/Prism Ass’y backward or forward

(about 0mm ~ 0.8mm) to obtain the proper focus. Confirm the focus at TELE and WIDE zoom.

5 Tighten 4 screws A to fix the LCD Panel/Prism ass'y.

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LCD Panel/Prism Ass’y

■ Lamp Replacement

Service Mode Input 1 Group No. Data

40 0 123

Ver.

1.00 .00

WARNING:

- For continued safety, replace with a lamp assembly of the same type.

- Allow the projector to cool for at least 45 minutes before you open the lamp cover. The inside of the projector can become very hot.

- Do not drop the lamp module or touch the glass bulb! The glass can shatter and cause injury.

Procedure

1 Turn off the projector and disconnect the AC cord. Allow the projector to

cool for at least 45 minutes.

2 Loosen 2 screws with a screwdriver and open the lamp cover. 3 Loosen 2 screws and pull out the lamp assembly by grasping the

handle.

4 Replace the lamp assembly securely and tighten 2 screws. 5 Close the lamp cover and tighten 2 screws. 6 Connect the AC cord to the projector and turn on.

7 Reset the Lamp Replace Counter, see below explanation.

Note:

- Do not reset the Lamp Replace Counter, except after lamp is replaced.

- The projector can not be turned-on with lamp cover removed, because when the lamp cover is removed, the interlock switch is also released to switch off the mains power for safety.

ORDER REPLACEMENT LAMP

Type No. Service Parts No. POA-LMP38 610 293 5868

Lamp cover

Handle

Lamp Assembly

Screws

How to reset Lamp Replace Counter

1 Turn the projector on, and press the MENU button

and the on-screen menu will appear. Press the POINT LEFT/RIGHT buttons to move a red frame pointer to SETTING menu icon.

2 Press the POINT DOWN button to move a red frame

pointer to “Lamp counter reset” and then press the SELECT button. The message “Lamp replace counter reset?” is displayed. Move the pointer to [Yes] and the press the SELECT button.

3 Another confirmation dialog box appears and select

[Yes] to reset Lamp Replace Counter .

Please refer to t he owners m anual for fur ther information.

How to check Lamp Replace Counter

The LAMP REPLACEMENT indicator will illuminate when the Lamp Replace Counter reaches 1000 hours. This is to indicate that lamp replacement is required.

You can check the lamp replace counter following to below procedure.

1 Press and hold the pointer UP on the projector for

more than 20 seconds.

2 The Lamp replace Counter service menu appears

on the screen briefly. For example, when the value of data indicates “123”, the accumulated operation time

Recommendation

Should the air filter become clogged with dust particles, it will reduce the cooling fan’s effectiveness and may result in internal heat build up and short lamp life. We recommend cleaning the air filter after the projection lamp is replaced. Refer to “Air Filter Cleaning”.

is 123 hours.

Lamp replace counter data

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■ Optical Adjustments

Optical Filter(WV)

Polarized Glass

Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical Disassemblies” Adjustments require a 2.0mm hex wrench and a slot screwdriver. Note: Do not disconnect connectors K8L, K8X, K8D, K8G and K8E on the main board, because the projector can

not turn on due to operate the power failure protection.

Contrast adjustment

[Before Adjustment]

- Input a 100% of black raster signal.

[R/G/B-CONTRAST ADJUSTMENT] 1 Loosen a screw A (Fig.1-1/1-4) on the polarized glass mounting base

which you intend to adjust.

2 Turn the polarized glass mounting base with knob B as shown in Fig.1-2

to obtain the darkest brightness on the screen. (The polarized glass and optical filter move together.)

3 Turn the optical filter mounting base with know C as shown in Fig.1-3

to obtain the black color uniformity on the screen.(Move only the optical filter.)

4 Tighten the screw A to fix the polarized glass mounting base.

Repeat steps 1 to 4 for remaining R, G or B contrast adjustment.

Polarized glass

mounting base

Fig.1-1

Fig.1-2

Fig.1-3

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Optical Adjustments

Condenser Lens adjustment

1 Turn the projector on by a state of without FPC cables. 2 Adjust the adjustment base of condenser lens ass’y to make color

uniformity in white.

1) If the shading appears on the left or right of the screen as

shown in Fig.2-1, loosen 2 screws A with the 2.0mm hex driver, and adjust the slot B to make color uniformity in green by using a slot screwdriver.

2) If the shading appears on the top or bottom of the screen as shown in and adjust the slot D to make color uniformity in green by

using a slot screwdriver

Fig.2-2, loosen 1 screw C with the 2.0mm hex driver,

3 Tighten screws A and C to fix the Condenser lens unit.

Note: The relay lens adjustment must be carried out after completing this adjustment.

Fig.2-1

Moving of slot B

White

Slot B

Slot D

Fig.2-2

Moving of Slot D

White

-21-

Optical Adjustments

Relay lens-Out adjustment

1 Turn the projector on by a state of without FPC cables. 2 Adjust the adjustment base of relay lens ass’y to make color

uniformity in white.

1) If the cyan bar appears on the left or right of the screen as

shown in Fig.4-1, loosen 1 screw A with the 2.0mm hex driver, and adjust the slot B to make color uniformity in white by using a slot screwdriver.

2) If the cyan bar appears on the top or bottom of the screen as shown in and adjust the screw D to make color uniformity in white by

using a slot screwdriver.

Fig.4-2, loosen 2 screws C with the 2.0mm hex driver,

3 Tighten the screws A and C to fix the relay lens unit.

Slot B

Fig.4-1

Moving of slot B

Screw D

Fig.4-2

Moving of slot D

-22-

Service Mode Input 1 Group No. Data

0 0

Ver.

1.00 .00

■ Electrical Adjustments

● Service Adjustment Menu Operation

To enter the service mode

To enter the “Service Mode”, press and hold the MENU and IMAGE button on the projector at the same time for more than 3 seconds. The service menu appears on the screen as follows.

To adjust service data

Select the adjustment group no. by pressing the MENU button, and select the adjustment item no. by pressing the pointer UP or DOWN button, and change the data value by pressing the VOLUME – or VOLUME + button. Refer to the “Service Adjustment Data Table” for further description of adjustment group no., item no. and data value.

To exit the service mode

To exit the service mode, press the POWER ON-OFF button on the projector or remote control unit.

Group No.

● Memory IC Replacement

IC808 on the main board stores the data for the service adjustments, and should not be replaced except for the case of defective device. If replaced, it should be performed the re-adjustments following to the “Electrical Adjustments”. The data of lamp replacement monitor timer is stored in the IC808. Please note that the lamp replace counter is reset when the memory IC (IC808) is replaced. (Lamp replace counter can not be set to the previous value.)

● Caution to memory IC replacement

When IC808 is replaced with new one, the CPU writes down the default data of the service adjustments to the replaced IC, refer to the service adjustment table. As these data are not the same data as factory shipped data, it should be required to perform the

Item No.

Data value

re-adjustments following to the “Electrical Adjustments”. Please note that the lamp replace counter is reset.

● Caution of Main Board replacement (in the case IC808 is not defective)

When the main board is replaced, IC808 should be replaced with the one on previous main board. After replacement, it should be required to perform the re-adjustments following to the “Electrical Adjustments”. In this case, the lamp replace counter can be kept the value as before.

-23-

White 100%

Black 100%

Electrical Adjustments

● Circuit Adjustments

CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the

following adjustments except requiring the readjustments in servicing otherwise it may cause loss of performance and product safety.

[Adjustment Condition]

● Input signal

Video signal ......................... 1.0Vp-p/75Ω terminated, 16 steps gray

scale (Composite video signal)

Computer signal .................... 0.7Vp-p/75Ω terminated, 16 steps gray

scale pattern (XGA)

Component Video signal ....... 0.7Vp-p/75Ω terminated, 16 steps gray

scale (Component video signal with 480p or 1080i format)

● Picture control mode .............. “STANDARD” mode unless otherwise

noted.

Note:

* Please refer to “Service Adjustment Menu Operation” for entering to the

service mode and adjusting the service data.

Output Voltage adjustment

After replacing the Power Board readjust the Output voltage adjustment as follows.

1. Connect a digital voltmeter to pin 1 (+) of K6A and

chassis ground (-).

2. Adjust the voltage by using board as following.

AC Input Reading 230V 370 ±2Vdc or 120V 340 ±2Vdc

Caution: Be sure to connect the lamp when taking this adjustment.

VR601 on the power

Video Center adjustment

1. Receive the 16-step gray scale computer signal with Input 1 [COMPUTER] mode.

2. Enter the service mode.

3. Connect a digital voltmeter to test point “TP531” (+) and chassis ground (-).

4. Select group no. “ value to adjust the voltage to be 7.30 ±0.1Vdc.

5. Connect a digital voltmeter to test point “TP501” (+) and chassis ground (-).

6. Select item no. “ the voltage to be 7.30 ±0.1Vdc.

7. Connect a digital voltmeter to test point “TP561” (+) and chassis ground (-).

8. Select item no. “ the voltage to be 7.30 ±0.1Vdc.

16 steps gray scale pattern

11”, item no. “0” and change data

1” and change data value to adjust

2” and change data value to adjust

Low Voltage adjustment

1. Receive the 16-step gray scale video signal with Input 3 [VIDEO] mode.

2. Connect a digital voltmeter to pin 3 (+) of CN6A and chassis ground (-).

3. Adjust the voltage to be

VR681 on the power board.

15.8 ±0.1Vdc by using

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Electrical Adjustments

Pedestal Lebel = Black Lebel

(a)

(b)

GND

(a)

black level

White Level

(a)

NRS adjustment

1. Receive the a6-step gray scale computer signal with Input 1 [COMPUTER] mode.

2. Enter the service mode.

3. Connect an oscilloscope to test point “TP3671” (+) and chassis ground (-).

4. Select group no. “ value to adjust amplitude “a” to be 2.0 ±0.1V.

5. Select item no. “4” and change data value to adjust amplitude “b” to be 7.5 ±0.1V.

11”, item no. “3” and change data

PC Gain adjustment

1. Receive the 16-step gray scale computer signal with Input 1 [COMPUTER] mode.

2. Enter the service mode.

3. Connect an oscilloscope to test point “TP531” (+) and chassis ground (-).

4. Select group no. “ to “600”, and then decrease data to adjust waveform “a” to be minimum amplitude.

5. Connect an oscilloscope to test point “ and chassis ground (-).

6. Select item no. “ then decrease data to adjust waveform “a” to be minimum amplitude.

7. Connect an oscilloscope to test point “ and chassis ground (-).

8. Select item no. “ then decrease data to adjust waveform “a” to be minimum amplitude.

10”, item no. “3” and set data value

TP501” (+)

4” and set data value to “600”, and

TP561” (+)

5” and set data value to “580”, and

PC Pedestal adjustment

1. Receive the 16-step gray scale computer signal with Input 1 [COMPUTER] mode.

2. Enter the service mode.

3. Connect an oscilloscope to test point “TP531” (+) and chassis ground (-).

4. Select group no. “ value to adjust the pedestal level and black level to be the same level.

5. Connect an oscilloscope to test point “ and chassis ground (-).

6. Select item no. “ the pedestal level and black level to be the same level.

7. Connect an oscilloscope to test point “ and chassis ground (-).

8. Select item no. “ the pedestal level and black level to be the same level.

500”, item no. “0” and change data

TP501” (+)

1” and change data value to adjust

TP561” (+)

2” and change data value to adjust

Black Level adjustment

1. Receive the 16-step gray scale computer signal with Input 1 [COMPUTER] mode.

2. Enter the service mode.

3. Connect an oscilloscope to test point “TP531” (+) and chassis ground (-).

4. Select group no. “ value to adjust amplitude “a” to be 9.0 ±0.1V.

5. Connect an oscilloscope to test point “TP501” (+) and chassis ground (-).

6. Select item no. “ amplitude “a” to be 9.0 ±0.1V.

7. Connect an oscilloscope to test point “TP561” (+) and chassis ground (-).

8. Select item no. “ amplitude “a” to be 9.0 ±0.1V.

11”, item no. “8” and change data

9” and change data value to adjust

10” and change data value to adjust

-25-

Electrical Adjustments

Pedestal Lebel = Black Lebel

(a)

Pedestal Lebel = Black Lebel

PC Gamma Shift adjustment

1. Receive the 16-step gray scale computer signal with Input 1 [COMPUTER] mode.

2. Enter the service mode.

3. Select group no. “10”, item no. “6” and change data value to reproduce the proper gray scale picture on the screen.

A/D Reference adjustment

1. Receive the 16-step gray scale computer signal with Input 3 [VIDEO] mode.

2. Enter the service mode.

3. Connect a digital voltmeter to test point “TPVRB” (+) and chassis ground (-).

4. Select group no. “ value to adjust the voltage to be 0.7 ±0.1Vdc.

5. Connect a digital voltmeter to test point “TPGVRT” (+) and chassis ground (-).

6. Select item no. “ the voltage to be 2.2 ±0.1Vdc.

11”, item no. “11” and change data

12” and change data value to adjust

A/D Input adjustment

1. Receive the 16-step gray scale video signal with Input 3 [VIDEO] mode.

2. Enter the service mode.

3. Connect an oscilloscope to test point “TP13G” (+) and chassis ground (-).

4. Select group no. “ value to adjust amplitude “a” to be 1.35 ±0.1V. If not, use item no. “1” for fine adjustment.

5. Connect an oscilloscope to test point “TP13B” (+) and chassis ground (-).

6. Select item no. “ amplitude “a” to be 1.35 ±0.1V.

7. Connect an oscilloscope to test point “TP13R” (+) and chassis ground (-).

8. Select item no. “ amplitude “a” to be 1.35 ±0.1V.

2”, item no. “1” and change data

3” and change data value to adjust

4” and change data value to adjust

AV Pedestal adjustment

1. Receive the 16-step gray scale video signal with Input 3 [VIDEO] mode.

2. Enter the service mode.

3. Connect an oscilloscope to test point “TP13G” (+) and chassis ground (-).

4. Select group no. “ value to adjust the pedestal level and black level to be the same level.

2”, item no. “0” and change data

Note: This adjustment should be done after VIDEO

Pedestal adjustment.

Video Pedestal adjustment

1. Receive the 16-step gray scale video signal with Input 3 [VIDEO] mode.

2. Enter the service mode.

3. Connect an oscilloscope to test point “TP531” (+) and chassis ground (-).

4. Select group no. “ value to adjust the pedestal level and black level to be the same level.

5. Connect an oscilloscope to test point “ and chassis ground (-).

6. Select item no. “ the pedestal level and black level to be the same level.

7. Connect an oscilloscope to test point “ and chassis ground (-).

8. Select item no. “ the pedestal level and black level to be the same level.

11”, item no. “15” and change data

TP501” (+)

16” and change data value to adjust

TP561” (+)

17” and change data value to adjust

-26-

+ 58 hidden pages

Sanyo PLV-70,PLV-70L Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual