AQUOS 2006 UPDATE

LC26/32D40U and LC37/45D40U

Objectives

Upon completion of this course, you will learn

• How to disassemble the unit

• Theory of operation

• How to Use the service menu

• The functions and operations for each PCB

• Board level PWB troubleshooting and isolating a defective LCD panel

• The required adjustments after a PCB has been replaced

• How to perform software updates

The PWB’s of the Aquos Liquid Crystal Television employ Lead-Free Solder. The LF symbol indicates lead-free solder and is ink stamped on the side of the PWB. The alpha character following the LF indicates the type of lead-free solder used. In this case, it is a compound utilizing a combination of tin, silver, and copper.

Special Service and

Warranty Notes

Unit Specifications

Unit Specifications

Unit Disassembly

The back cabinet assembly can be removed with the stand affixed to the TV

Remove 19 screws

Note the 1 short plastic and 2 machine screws

Short plastic screw

Machine screws

Unit Disassembly

Back cabinet assembly removed

As you can see, the set is still supported with the original stand

Your access is very limited, however, you can check for poor connections, etc.

Unit Disassembly

You will need to remove the stand and back angles in order to have full access to the PCB’s

Stand

Back angle 1

Back angle 2

Unit Disassembly

Remove 4 hex screws and pull out stand

Stand

Unit Disassembly

Remove 4 screws and lift off back angle 2

Back angle 2

Unit Disassembly

Remove 4 screws from the bottom of back angle 1

Back angle 1

Unit Disassembly

Remove 3 screws from the top of back angle 1

Unit Disassembly

You now have access to all replaceable PCB’s

Digital PCB

Power PCB

A/V PCB

Scaler PCB

Unit Disassembly

LCD Removal

Remocon

Disconnect remocon cable.

Disconnect speaker wires from R&L speakers.

R speaker and wires shown

Unit Disassembly

LCD Removal

Inverter cable

Disconnect the inverters cable from power supply

Disconnect LVDS cable from scaler PCB

NOTE: LVDS cables are fragile

LVDS

Unit Disassembly

LCD Removal

Remove 5 screw from the bottom

Remove 1 screw from right side

Remove 2 screws from top

Removing front cabinet

Unit Disassembly

LCD Removal

Gently lift up the entire LCD/chassis away from the front cabinet

Unit Disassembly

LCD Removal

Remove screw below A/V unit

Remove screw below scaler

Unit Disassembly

LCD Removal

Remove 2 screws from bottom of LCD unit

Lift off chassis from LCD unit

Unit Disassembly

LCD Removal

LCD panel rear view

LCD panel front view

Replaceable PCB’s

The power supply, scaler, A/V, operation and remocon are the only PCB’s that are replaceable.

LCD controller; and inverters are contained on the LCD unit.

Digital PCB

Power PCB

A/V PCB

Scaler PCB

Operation PCB

Remocon PCB

Power Supply

PCB Removal

Disconnect the 6 power supply cables

Remove 2 screws and lift off AC inlet holder

Remove 7 screws and lift off power supply PCB

AC inlet holder

Scaler PCB Removal

Remove 5 screws and lift out jack plate-2

Scaler PCB Removal

Disconnect 4 cables and 2 FPC’s

Remove 6 screws from metal shield

Remove 7 screws and lift off scaler PCB

LVDS to LCD panel “cable

and wires are fragile”

FPC

A/V-Digital PCB Removal

Remove 2 screws and lift off jack-plate-1

A/V-Digital PCB Removal

Disconnect 10 cables and 2 FPC’s

Remove 7 screws and lift off A/V PCB

Digital PCB Removal

Remove solder at 3 points from metal shield

Verify that shield is loose and not still attached to PCB

Digital PCB Removal

Gently wiggle loose digital PCB and lift from A/V PCB

Digital PCB removed

Operation PCB Removal

Remove 2 screws and lift out button plate

Disconnect 1 cable

Remove 3 screws

and lift off operation PCB

Remocon PCB Removal

Disconnect 1 cable

Remove 3 screws and lift off operation PCB

A/V PCB Operation

The A/V PCB is responsible for input, switching and

processing for the component, composite and S-video sources, including video information from the digital section and 2-channel audio.

RF section includes the tuner, IF and demodulation stages.

The audio output section provides digital and 2-channel audio output sources. Also included is a 2-channel audio power amplifier for driving the built-in speakers.

A/V PCB Operation

The digital PCB sits piggy back on the A/V PCB and

provides ATSC and Qam demodulation.

All the processed video outputs the A/V PCB and is applied to the Scaler PCB for picture formatting and LVDS processing.

Scaler PCB Operation

The scaler PCB is

responsible for HDMI input, video scaling, LVDS drive and main system control operation.

All signal passes through the scaler for picture formatting. The LVDS section converts the signal into RGB 24 bit for LCD drive.

The microprocessor controls all functions of the set including OSD.

Power Supply

PCB Operation

The power supply PCB is responsible for generating all the main supplies needed to operate each PCB.

Signal Flow Block

AV Unit

LCD

Contro

ller

LCD

Panel

HDMI

Vid

eo

sw

itch

Tuner/Y,Pb,Pr/RGB/Svideo

RGB=24bit

2x LCD panel drive

LCD Panel Unit

Scaler

TDMS

LVDS

HDMI

Signal Flow Block

Service Mode

Service Mode

Service Mode

Adjustments

The white balance should be confirmed after replacing the LCD panel or A/V, Digital or Scaler PCB. Perform white balance adjustment if only if required.

Troubleshooting

No Power

Troubleshooting

No Picture, 1

Troubleshooting

No Picture, 2

Troubleshooting

No Audio

Troubleshooting

“Please Wait” Error Message

Troubleshooting

No Color

Troubleshooting

No OSD

How to Upgrade Software

LC26/32D40U End

LC37/45D40U

Unit Disassembly

The back cabinet assembly can be removed with the stand affixed to the TV

Remove 16 screws

Note the 6 machine screws (White)

Unit Disassembly

Back cabinet assembly removed

As you can see, the set is still supported with the original stand

Unit Disassembly

Remove 3 screws from each angle

Lift off angles

Center angle right and left

Unit Disassembly

With the center angles removed, you now have access to the various PCB’s

Note: Inverter and LCD controller PCB’s is part of the LCD panel unit, therefore, not replaceable individually

Main unit

IF unit LED unit

Key unit LCD controller unit

Power supply unit

Inverter unit

Unit Disassembly

You will need to remove the main shield in order to access the main and IF units

Remove 7 screws and lift off main shield

Release the 2 wire ties

Wire ties

PCB View

Main, IF and Power supply units reveled

Main unit

IF unit Power supply unit

Main / IF Unit Removal

The main and IF units will be removed as one unit and then separated.

Remove 6 cables from main unit

Remove 6 screws from main unit

NOTE: LVDS cables are fragile

Do not loose insulating eyelets

LVDS

Main / IF Unit Removal

Remove 2 cables from IF unit

Remove 6 screws from IF unit

Main / IF Unit Removal

Remove 3 screws from tray chassis

Lift off main/IF units

Main / IF Unit Removal

Remove 3 screws from jack angle

Pull out main unit

Main Unit Removal

Disconnect the 3 PWB connectors

Remove RCA cable from tuner

Slide out main unit

IF Unit Removal

Main unit removed

Remove 2 screws from jack angle

Slide out IF unit

Main unit removed

Power Supply Unit

Removal

Disconnect 3 cables

Remove 3 screws

Lift off power supply unit

LED Unit Removal

Disconnect 1 cable

Remove 2 screws and lift off LED unit

Key Unit Removal

The key unit is

loose once the rear cabinet ass’y is removed

Disconnect 1 cable

Remove 3 screws

and lift off LED unit

Main Unit Operation

The main unit is responsible for:

analog, cable and digital tuning (ATSC/QAM)

analog and digital audio processing

optical digital out

HDMI inputs and processing

CPU & EPROM

LVDS drive signaling

IF Unit Operation

The IF unit is responsible for:

component, composite and Svideo inputs

audio amplifier

A/V switching

Power Supply Unit

Operation

The power supply PCB is responsible for generating all the main supplies needed to operate each PCB.

LED Unit Operation

The LED unit is responsible for:

Remote control IR receiver

OPC sensor

Power and OPC indicators

Signal Flow Block

Main Unit

LCD

Contro

ller

LCD

Panel

HDMI

IF U

NIT

Y,Pb,Pr/RGB/Svideo

RGB=24bit

2x LCD panel drive

LCD Panel Unit

Scaler

TDMS

LVDS

HDMI

Tuner

LCD Removal

Remove 4 hex screws

Pull out stand

LCD Removal

Remove 3 screw

Slide out stand cover

Stand cover

LCD Removal

Remove 4 screws

Lift off stand fix angle

LCD Removal

Disconnect speaker and LED unit cables

Open 1 wire tie

Note: The Key and LED units have been removed earlier

LCD Removal

Remove 2 screws from front cabinet ass’y (bottom)

LCD Removal

Remove 2 screws from front cabinet ass’y (top)

LCD Removal

Lift off LCD unit from front cabinet Ass’y

LCD Removal

Disconnect 2 cables from LCD unit

Open 1 wire tie

NOTE: LVDS cables are fragile

LVDS

LCD Removal

Disconnect 2 cables from inverter unit

LCD Removal

Remove 3 screws from tray Ass’y (right side)

LCD Removal

Remove 2 screws from tray Ass’y (left side)

LCD Removal

Lift off tray Ass’y

LCD Removal

Remove rug angles from the top/bottom left and right sides of LCD unit

Remove 2 screws

Lift off rug angle

Rug angle

LCD Removal

Remove 3 screws

Lift off center angle

Center angle

Troubleshooting Codes

Error Standby Cause

The “Standby Cause” indicator is on page 1/26 of the service menu. This display indicates why the unit may have gone into standby mode. Check the “Standby Cause” display to determine why the unit may have shutdown intermittently or shut down after a specific period of time.

See standby error causes on next slide

Standby Cause Error’s

Industry Initialization

These first 3 steps will bring you to the service menu

1) Press and continue to hold the VOL & INPUT buttons while plugging in AC power.

2) 2) Continue to hold the VOL & INPUT buttons until <K> appears on the top left side of the Display.

Industry Initialization

3) Press the VOL &

Channel buttons until the blue 1/26 Service Menu screen appears.

4) Press key on remote control and navigate to page 2/26

Industry INIT (+cause) OFF

Industry Initialization

5) Press > on remote control to change from off to on

6) Press “Enter Key” on remote control to start industry init

Note:////// will appear during industry init process

Industry INIT (+cause) on

Industry INIT (+cause) On /////////////

Industry Initialization

Industry initialization complete

Lamp Error Reset

Use and channel keys on remote control to navigate you to the 2/26 page

1) Press the channel on remote control to select Lamp Error Reset

2) Press > on remote control to change from off to on

3) Press “Enter Key” on remote control to reset lamps

Lamp Error reset ON

Industry INIT (+cause) OFF

Exiting Service Menu

All changes are stored automatically when inputted.

Disconnect AC power to exit the service menu

How to Upgrade Software Note: This upgrade procedure is similar to previous Aquos

models using the SD card update process

This concludes the AQUOS

2006 UPDATE