Sanyo PLV-55WHD1 User manual

FILE NO.

SERVICE MANUAL

LCD Projection TV

REFERENCE NO. SM5110797-00

PRODUCT CODE :

PLV-55WHD1 M8LA 1 122 293 00

PLV-65WHD1 M8PA 1 122 364 00

Original Version

MODEL NO. PLV-55WHD1

PLV-65WHD1

U.S.A.

Chassis No. M8L-55WHD100

M8P-65WHD100

NOTE: Match the Chassis No. on the rating

sheet on the cabinet with the

Chassis No. in the Service Manual.

If the Original Version Service

Manual Chassis No. does not

match the unites, additional

Service Literature is required. You

must refer to “Notices” to the

Original Service Manual prior to

servicing the unit.

Give complete “CHASSIS NO." for parts order

or servicing, it is shown on the rating sheet on

the cabinet of the LCD Projection TV.

■ Contents.................................................................................................................2

■ Safety Instructions..................................................................................................3

■ Specifications .........................................................................................................4

■ Circuit Protections ..................................................................................................5

■ Installation ..............................................................................................................7

■ Cleaning ...............................................................................................................10

■ Lamp Replacement ..............................................................................................12

■ Mechanical Disassemblies...................................................................................15

■ Optical Parts Location and Direction....................................................................54

■ Adjustments after Parts Replacement .................................................................58

■ Optical Adjustments .............................................................................................59

■ Electrical Adjustments..........................................................................................72

● Service Adjustment Menu Operation..........................................................72

● Circuit Adjustments .....................................................................................73

● Service Adjustment Data Table...................................................................77

● Test Points Location ...................................................................................84

■ Chassis Block Diagrams ......................................................................................85

■ Power Supply Lines..............................................................................................94

■ Troubleshooting ....................................................................................................95

■ Control Port Functions .........................................................................................98

■ Waveforms..........................................................................................................100

■ IC Block Diagrams .............................................................................................101

■ Service Parts List ...............................................................................................106

■ Mechanical and Optical Parts List ............................................................106

■ Electrical Parts List ...................................................................................123

■ Appendix ............................................................................................................148

● Quick Reference of Chassis Disassemblies .............................................148

--------------------------------------------------------------------------------------------------------------------

Drawings & Diagrams .......................................................................... A1 - A15

■ Parts description and reading in schematic diagram .......................................... A2

■ Schematic Diagrams ....................................................................................A3 - A8

■ Printed Wiring Board Diagrams ................................................................ A9 - A14

■ Pins description of ICs, transistors, diodes ...................................................... A15

Note: "PTV" may be used as an abbreviation for LCD Projection TV in this manual.

- 2 -

■ Contents

WARNING:

The chassis of this LCD projection TV 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 ( ) in the schematic diagram. For continued product safety and protection of per-

sonnel injury, servicing should be made with qualified personnel.

The following precautions must be observed.

SAFETY PRECAUTIONS

1: An isolation transformer should be connected in the power line between the LCD projection TV and the

AC line before any service is performed on the LCD projection TV.

2: Comply with all caution and safety-related notes provided on the cabinet top, 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 LCD projection TV WITHOUT THE PROTECTIVE SHIELD IN POSITION AND

PROPERLY SECURED.

4: Before replacing the cabinet, thoroughly inspect the inside of the cabinet to see that no stray parts or

tools have been left inside.

Before returning any LCD projection TV 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 LCD projec-

tion TV. 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

the parts must be made by exactly the same parts.

Caution:

The parts and screws should be placed exactly the same position as the original otherwise it may cause lose of

performance and product safety.

The wiring method of the leads should be returned exactly the same state as the original otherwise it may cause

lose of performance and product safety.

SERVICE PERSONNEL WARNING

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 is 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 at its starts.

Since the lamp is very high temperature during units operation. Replacement of the lamp should be done at

least 30 minutes after the power has been turned off, to allow the lamp cool-off.

CAUTION

RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.

DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.

- 3 -

■ Safety Instructions

● LCD panels are manufactured to the highest possible standards. Even though 99.99% of the pixels are effective, a tiny

fraction of the pixels (0.01% or less) may be ineffective by the characteristics of the LCD panels.

Technical Specifications

- 4 -

Screen Size (Measured Diagonally):

PLV-55WHD1: 55-inches/PLV-65WHD1: 65-inches

LCD Panel System:

0.7” wide TFT Active Matrix type, 3 panels

Panel Resolution:

1280 x 720 dots

Number of Pixels:

2,764,800 (1280 x 720 x 3 panels)

Signal Compatibility:

NTSC; 480i, 480p, 1080i, 720p

Scanning Format:

720p (All Signals are Converted to 720p)

RF Antenna Input:

Analog—UHF/VHF/CATV 75 ohm

Digital—75 ohm

Jacks and Connectors:

Video 1 Input: Composite Video/S-Video

and Audio L/R

Video 2 Input: Component (Y/Pb/Pr) with

Audio L/R Input

Video 3 Input: Component (Y/Pb/Pr) with

Audio L/R Input

Digital Audio Output: Dolby® Digital (Optical)

Analog Audio Output:Audio L/R (Fixed)

HDMI Input: 19-pin connector

(Picture/Sound with HDCP)

Woofer Output: RCA Type

Service Jack: D-Sub (HDB 9)

Sound:

Two Speakers, size: 5.0” x 3.0” (128 x 77 mm)

Amplifier:

Built-in with 15.0 W/ch

Power Requirement:

Source: AC 120 V, 60 Hz

AC Power Consumption (average):

PLV-55WHD1: 120 V, 2.8 A

PLV-65WHD1: 120 V, 2.8 A

Size and Weight (approximately):

PLV-55WHD1

Width: 50.9” (1294 mm)

Height: 34.0” (864 mm)

Depth: 15.6” (397 mm)

Weight: 86.4 lbs (39.2 kg)

PLV-65WHD1

Width: 60.6” (1538 mm)

Height: 40.0” (1016 mm)

Depth: 18.4” (468 mm)

Weight: 106.0 lbs (48.1 kg)

Environmental Considerations:

Operating Temperature: 41˚F–95˚F (5˚C–35˚C)

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

Remote Control:

Battery : 1.5 V AAA Alkaline type x 2

Operating Range:16.4’ (5 m)/±30

Dimensions: 7.72” (L) x2.15” (W) x 0.83” (H)

(196 mm x 54.7 mm x 21.0 mm)

Net Weight: 2.96 oz (84 g)

(without batteries)

Accessories:

Owner’s Manual

AC Power Cord

Remote Control

Specifications are subject to change without notice.

■ Specifications

This LCD Projection TV provides the following circuit protections to operate in safety. If the abnormality occurs

inside the LCD Projection TV, it will automatically turn off by operating one of the following protection circuits.

A fuse(F601) is located inside of the LCD Projection TV.

When the POWER indicator is not lightning, the fuse may

be opened. Check the fuse as following steps.

The fuse should be used with the following type;

● Fuse

● Thermal switch

Fuse Part No. : 323 022 2105

TYPE T4.0AH 250V FUSE

LITTEL FUSE INC. TYPE 215004

How to replace the fuse

1. Unplug the AC power cord.

2. Remove the cabinet bottom cover following to

"Mechanical Disassemblies".

3. Remove the fuse from fuse holder on the Power Board.

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

There is the thermal switch (SW902) inside of the LCD

Projection TV to prevent the internal temperature rising

abnormally. When the internal temperature reaches near

95°C, the thermal switch cuts off the drive signal to the

lamp circuit 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 a tester. If it has high impedance, thermal switch

may be in open.

How to reset the thermal switch

1. Remove the optical / chassis unit following to

"Mechanical Disassemblies".

2. Press the reset button on the thermal switch.

CAUTION:

Before press the reset button, make sure that the AC cord

must be disconnected from the AC outlet.

Fuse

(F601)

Press

(SW902)

Thermal switch

- 5 -

■ Circuit Protections

● Lamp cover switch

The lamp cover switch (SW1861) cuts off the drive signal to the lamp circuit when the lamp cover is removed or no

close completely.

After opening the lamp cover for replacing the lamp unit, place the lamp cover correctly otherwise the LCD

Projection TV can not be turned on.

● Warning indicator

The LCD Projection TV is shut down and the WARNING indicator is flashing red

When the temperature inside the LCD Projection TV exceeds the normal temperature, it is automatically shut down

to protect the LCD Projection TV. The POWER indicator flashes red and the LCD Projection TV is being cooled

down. When the temperature inside the LCD Projection TV returns to normal, the POWER indicator is turned off

and the LCD Projection TV can be turned on. When the LCD Projection TV is turned on again, the WARNING indi-

cator stops flashing.

Check the items listed below;

> Installation and air circulation

> Temperature abnormality with temperature sensors

The LCD Projection TV is shut down and the WARNING indicator lights red

When the LCD Projection TV detects an abnormal condition, it is automatically shut down to protect the LCD

Projection TV and the WARNING indicator lights red. In this case, unplug the AC power cord and plug it, and then

turn the LCD Projection TV on again to verify operation. If the LCD Projection TV is turned off again or fails to be

turned on, the internal check and repair will be required.

Check the items listed below;

> Power failure protection circuit

> Temperature abnormality with temperature sensors and thermal switch

> Lamp cover switch

LAMP COVER SWITCH

(SW1861)

LAMP COVER

Circuit Protections

- 6 -

The openings in the cabinet are provided for ventilation. To

ensure reliable operation of the product and protect it from

overheating, these openings must not be blocked or

covered.

● Take appropriate space on the top, sides and rear of the

LCD Projection TV

cabinet for allowing air circulation and

cooling the

LCD Projection TV

. Minimum distance should

be taken. If the

LCD Projection TV

is to be built into a

compartment or similarly enclosed, the minimum

distances must be maintained. Do not cover the

ventilation slot on the

LCD Projection TV

. Heat build-up

can reduce the service life of your

LCD Projection TV

, and

can also be dangerous.

Air Circulation

Throughout the installation process, handling by more

than two people is recommended.

RECOMMENDATION

BE SURE TO USE OR PLACE THE LCD

PROJECTION TV IN THE TEMPERATURE

INDICATED BELOW:

Place the LCD Projection TV on flat places or with an exclusive

LCD Projection TV stand. Placing on uneven places may cause

picture tilt or distortion.

Do not place the LCD Projection TV under direct sunlight. This may

have a damaging effect on picture quality and the screen surface

of the LCD Projection TV.

41°F ~ 95°F (5°C ~ 35°C)

14°F ~ 140°F (-10°C ~ 60°C)

Operating Temperature

Storage Temperature

4" (10cm)

8"

(20cm)

8"

(20cm)

4"

(10cm)

Placing and Settling the LCD Projection TV

CAUTION;

When placing the LCD Projection TV, the spaces

for ventilation must be maintained.

SIDE and TOP REAR

- 7 -

■ Installation

This LCD Projection TV is equipped with cooling fans for protec-

tion from overheating. Pay attention to following to ensure proper

ventilation and avoid a possible risk of fire and malfunction.

- Do not cover vent slots.

Obstructions may block cooling air.

Hot air is exhausted from the exhaust vent.

When using or installing the LCD Projection TV, the following pre-

cautions should be taken.

– Do not put any flammable objects near the vent.

– Do not touch a peripheral part of the exhaust vent, especially

screws and metallic part. This area will become hot while the

LCD Projection TV is being used.

COOLING FANS

Cooling fans are provided to cool the LCD Projection TV. The fans'

running speed is changed according to the temperature inside the

LCD Projection TV. When the LCD Projection TV is cooled down

enough, the fans will stop running.

Caution;

Air intake vents and exhaust vents

Air intake vents

Exhaust vents (Hot air exhaust)

BACK OF CABINET

Installation

- 8 -

Screw

Caution;

When placing on a LCD Projection TV stand, take the measures against

prevention of fall for safety.

Placing on the TV stand

Attach the LCD Projection TV stand.

Stand attachment hole

(3 holes at bottom of cabinet)

Note; Follow to installation manual of a LCD Projection TV stand.

(PLV-5565STD)

Installing the LCD Projection TV for safety.

When Installing the LCD Projection TV, secure the LCD

Projection TV on the stand. If not, the LCD Projection TV may

fall down and accident can result.

Place the LCD Projection TV on the proper position of the

stand. There are 3 holes on the top panel of the stand. Use

the 3 screws (included with the stand) to fix the LCD

Projection TV.

Installation

- 9 -

- 10 -

Care for Using the LCD Projection TV

When using the LCD Projection TV, the following

precautions should be taken. Otherwise, the screen can

be damaged:

●

Do not push or hit the screen surface.

●

Do not write, paint, or affix anything on the screen.

●

Do not put anything on the LCD Projection TV.

●

Never touch the projection screen directly with hands.

NOTE:

Black dots or bright points of light (red, green, or blue) may appear

on the screen. This is a characteristic of the LCD panels, not a

malfunction of the LCD Projection TV.

Do not push or hit

the screen.

Be sure to disconnect the AC Power cord from the AC outlet

before cleaning the LCD Projection TV.

●

Gently wipe the screen and the cabinet with a soft dry clean

cloth.

●

When it is heavily soiled, wipe the screen and the cabinet

with a soft cloth dampened with warm water and finish with a

soft, dry clean cloth.

CAUTION;

Do not use benzene, thinner, or any volatile

substances to clean the LCD Projection TV. These

chemicals may cause damage to the product.

● Cleaning the LCD Projection TV

■ Cleaning

Cleaning

- 11 -

Cleaning Procedure

(When no good, progress to next step.)

1. Clean surface of optical parts using air spray.

2. Wipe the dry cleaning with wiping cloth and the wiper.

3. Soak a few medicines in the cloth as follows and wipe up them lightly. After that, always wipe the dry cleaning

cloth.

Disassembly Cleaning

Disassembly cleaning method should only be performed when the unit is considerable dirty and cannot be sufficient-

ly cleaned by air spraying alone.

Be sure to readjust the optical system after performing disassembly cleaning.

The surface of the optical components consists of multiple dielectric layers with varying degrees of refraction.

Never use organic solvents (thinner, etc.) or any kind of cleanser on these components.

Since the LCD panel is equipped with an electronic circuit, never use any liquid (water,etc.) to clean the unit.

Use of liquid may cause the unit to malfunction.

After long periods of use, dust and other particles will accumulate on the LCD panel, prism, mirror, polarized glass,

lens, etc., causing the picture to darken or color to blur. If this occurs,clean inside of the optical unit.

Remove dust or other particles using air spray. If dirt cannot be removed by air spray, disassemble and clean the opti-

cal unit.

Caution:

Use a commercial (inert gas) air spray designed for cleaning camera and computer equipment.

Use a resin-based nozzle only. Be very careful not to damage optical parts with the nozzle tip. Never use any kind

of cleanser on the unit. Also, never use abrasive materials on the unit as this may cause irreparable damage.

● Optical parts care and cleaning

Screen handling precaution;

1. Wear gloves when handling the screen to prevent fingerprints (also, protection of hand).

2. Do not use force when handling the screen so that edges will not brake or crack.

3. Be careful in handling at the process of disassemblies, because scratch or scrub wound makes transparency

decrease easily.

4. Keep the screen in a dust free environment, because dust may accumurate on the screen by static electricity.

5. Do not stand a screen obliquely for long time.

6. Use thinned synthetic detergent for cleaning, because of the weakness against solvent. Wipe gently with soft

cloth.

7. The screen has laminated Lenticular lens and the Fresnel lens. As scrubbed wound on lens is occured by vibra-

tion, so avoid too much vibration after lamination of Lenticular lens and Fresnel lens.

- 12 -

When the life of the projection lamp of this LCD Projection TV

draws to an end, the LAMP REPLACE indicator will become

yellow. If this indicator turns to yellow, replace the lamp with a

new one promptly.

LAMP

REPLACE

WARNIN

G

This indicator becomes yellow

when the life of the projection

lamp draws to an end.

Front Panel

Turn off the LCD Projection TV and disconnect the AC plug. Allow

the LCD Projection TV to cool for at least 30 minutes.

Loosen a screw that secure the Lamp Cover with a screwdriver

and remove the Lamp Cover.

1

3

Loosen 2 screws that secure the lamp with a screwdriver and

pull out the Lamp by holding the holes on both sides.

4

Replace the Lamp with a new one and put it back and tighten 2

screws. Make sure that the Lamp is correctly secured into the

Lamp compartment.

5

Press the latches on both side of the front cover and pull the front

cover forward to remove.

2

Connect the AC Power Cord to the Power Cord Connector and

turn on the LCD Projection TV.

Follow these steps to replace the lamp assembly.

Put the Lamp Cover back and tighten the screw, and then replace

the front cover.

6

Reset the Lamp replace counter.

See “Lamp Replace Counter” on the next page .

For continued safety, replace with a lamp of the same

type. Do not drop a lamp or touch a glass bulb! The

glass can shatter and may cause injury.

Allow a LCD Projection TV to cool, for at least 30

minutes before you open the Lamp cover. The inside of

the LCD Projection TV can become very hot.

CAUTIONCAUTION

Loosen the screw

Lamp Cover

CAUTION

When installing the new Lamp into the Lamp compartment, make sure

the Lamp socket is securely plugged into the compartment socket.

Improper or loosen socket connection may cause arc discharge result-

ing fire hazard.

7

8

Part (a)

Loosen the screw

LAMP

With pressing

the button, pull

the front cover

forward.

Press the latch

on both side.

Hold here and pull out the lamp.

(There are holes inside)

■ Lamp Replacement

Lamp Replacement

- 13 -

The LAMP REPLACE indicator will light yellow when

the total lamp used time reaches 7,980 hours -(✽).

This is to indicate that lamp replacement is required.

The total lamp used time is calculated by using the

below expression;

Total lamp used time = Teco + Tnormal x 1.14 -(✽)

T

eco : used time in LAMP MODE "Low"

Tnormal : used time in LAMP MODE "High" & "Mid"

You can check the lamp replace counter following to

below procedure.

1 Press and hold INFO button on the remote control

and then press CH(+) button on the side control.

2 The LCD Projection TV used time and lamp used

time will be displayed on the screen briefly.

Coun t e r

To t a lTime 0022

No rma l A 00 10

Eco B 0012

Ak+B 0023

3

0

3

7

H

Total lamp used time

● How to check Lamp Used Time

LCD Projection TV used time

(✽) The specifications are subject to change without

notice.

Be sure to reset the lamp counter after the lamp is

replaced. When the lamp counter is reset, the LAMP

REPLACE indicator will be turned off.

1

Press the MENU key to display the Main menu.

2

Use the CURSOR ed keys to highlight (green)

Lamp Counter Reset. Press ENTER.

3

Use the CURSOR d key to select Ye s . Press

ENTER.

4

Press the EXIT key to return to normal TV viewing.

Lamp counter reset?

Use this feature only after replacing the lamp in your PTV.

Lamp Replace Counter

NOTE:

● Do not reset Lamp replace counter without implementation of

lamp replacement. Be sure to reset the Lamp replace count-

er only after replacing the lamp.

● The lamp counter cannot be reset even if you press the

RESET key on the remote control.

Lamp Replacement

- 14 -

This LCD Projection TV uses a high-pressure lamp which must be handled carefully and properly. Improper handling

may result in accidents, injury, or create a fire hazard.

● Lamp lifetime may differ from lamp to lamp and according to the environment of use. There is no guarantee of the

same lifetime for each lamp. Some lamps may fail or terminate their lifetime in a shorter period of time than other

similar lamps.

● If the LCD Projection TV indicates that the lamp should be replaced, i.e., if the LAMP REPLACE indicator lights up,

replace the lamp with a new one IMMEDIATELY after the LCD Projection TV has cooled down.

( Follow carefully the instructions in the Lamp Replacement section of this manual.) Continuous use of the lamp

with the LAMP REPLACE indicator lighted may increase the risk of lamp explosion.

● A Lamp may explode as a result of vibration, shock or degradation as a result of hours of use as its lifetime draws

to an end. Risk of explosion may differ according to the environment or conditions in which the LCD Projection TV

and lamp are being used.

IF A LAMP EXPLODES, THE FOLLOWING SAFETY PRECAUTIONS SHOULD BE TAKEN.

If a lamp explodes, disconnect the LCD Projection TV’s AC plug from the AC outlet immediately. Contact an author-

ized service station for a checkup of the unit and replacement of the lamp. Additionally, check carefully to ensure that

there are no broken shards or pieces of glass around the LCD Projection TV or coming out from the cooling air circu-

lation holes. Any broken shards found should be cleaned up carefully. No one should check the inside of the LCD

Projection TV except those who are authorized trained technicians and who are familiar with LCD Projection TV serv-

ice. Inappropriate attempts to service the unit by anyone, especially those who are not appropriately trained to do so,

may result in an accident or injury caused by pieces of broken glass.

ORDER REPLACEMENT LAMP

Replacement lamp can be ordered through your dealer. When ordering a projection lamp, give the following

information to the dealer.

● Model No. of your LCD Projection TV : PLV-55WHD1 / PLV-65WHD1

● Replacement Lamp Type No. : POA-LMP96

(Service Parts No. 610 322 7382)

A

1

Cabinet bottom cover removal.

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 lose of performance and product safety.

The wiring method of the leads and ferrite cores should be returned exactly the

same state as the original, otherwise it may cause lose of performance and prod-

uct safety.

Screws Expression

(Type

Diameter x Length) mm

T type M Type

Tapping screw Machine screw

Fig. 1

1. Remove the 10 screws-A(T4x14) and remove the Cabinet bottom cover.

- 15 -

Cabinet bottom cover

■ Mechanical Disassemblies

B

D

C

A

B

2

Holder bracket back removal.

1. Remove the 4 screws-A(m3x8) and removw the Rear AV panel.

2. Remove the 7 screws-B(T4x12), remove the 2 screws-C(M3x6), remove the 2 screws

D(M3x8) and remove the Holder bracket back.

Fig. 2

- 16 -

Mechanical disassemblies

Rear AV panel

Holder bracket back

Latch-L

Latch-R

Fig. 3-b

3

Front cover removal.

1. Remove the Front cover of the LCD projection TV.

(Press the latches on both side of the front cover and pull the front cover forward to remove.)

Fig. 3-a

Press the latch on both side.

Front cover

With pressing the button,

pull the front cover.

- 17 -

Mechanical disassemblies

D

C

B

C

Side Grill unit

Side Key board unit

A

Holder Grill-R

Fig. 4-1

4-1

Side Grill unit and side key board unit removal.

1. Remove the 2 Screws-A(T4x12) from back side.

2. Remove the 4 Screws-B(T4x10) and remove the side key board unit.

3. Remove the 4 Screws-C(T4x10) and remove the Holder Grill-R.

4. Remove the 4 Screws-D(T4x10) and remove the side Grill unit.

B

A

Cover Grill

Spring

Holder button

Button Grill

Holder Grill -L

4-2

Side Grill unit disassemblies.

1. Remove the 4 Screws-A(T4x10) and remove the Holder Grill-L.

2. Remove the Screw-B(T3x8), remove the Button Grill, remove the spring, and remove the Holder button.

Fig. 4-2

- 18 -

Mechanical disassemblies

A

Button Grill

Spring

Holder button

1. Remove the Screw-A(T3x8), remove the Button Grill, remove the spring, and remove

the Holder button.

4-3

Side key board unit disassemblies-1.

1. Remove the 4 Screws-A(T3x8) and remove the Earth bracket.

2. Remove the Button, and remove the Cover.

4

-4

Side key board unit disassemblies-2.

A

Fig. 4-3

Fig. 4-4

- 19 -

Mechanical disassemblies

Earth bracket

Button

Cover

- 20 -

Mechanical disassemblies

1. Remove the 3 Screws-A(T3x6) and remove the Key board.

4-5

Side key board unit disassemblies-3.

A

Fig. 4-5

5-1

Digital Tuner unit removal.

1. Remove the 2 Screws-A(M3x6), 2 grounding leads and remove the Earth Bracket-A.

2. Remove the 6 Screws-B(M3x6), and remove the Earth Bracket-B.

3. Remove the 2 Screws-C(T4x12) and remove the Digital tuner unit.

A

C

B

Grounding Lead

Fig. 5-1

Key board

Earth bracket

Earth bracket-A

Earth bracket-B

Digital tuner unit

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