Toshiba TheaterWide 44HM85 Bedienungsanleitung

SERVICE MANUAL

Projection Television

44HM85

FILE NO. 050-200534

Published in Japan, Sep. 2005 (YC)

TOSHIBA CORPORATION 2005

TABLE OF CONTENTS

SAFETY PRECAUTIONS ...........................................................................................................................................................3

SPECIFICATIONS.......................................................................................................................................................................4

DESCRIPTION OF CONTROLS.................................................................................................................................................5

ADJUSTMENT INSTRUCTION ................................................................................................................................................12

EXPLODED VIEW ....................................................................................................................................................................16

REPLACEMENT PARTS LIST ..................................................................................................................................................17

PC BOARDS TOP & BOTTOM VIEW .......................................................................................................................................32

BLOCK DIAGRAM ....................................................................................................................................................................39

SCHEMATIC DIAGRAM ............................................................................................................................................................43

SAFETY PRECAUTIONS

General Guidance

An lsolation Transformer should always be used during the

servicing of a receiver whose chassis is not isolated from the

AC power line. Use a transformer of adequate power rating as

this protects the technician from accidents resulting in personal

injury from electrical shocks.

It will also protect the receiver and it's components from being

damaged by accidental shorts of the circuitary that may be

inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this monitor is blown, replace

it with the specified.

When replacing a high wattage resistor (Oxide Metal Film

Resistor, over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts.

Leakage Current Cold Check(Antenna Cold Check)

With the instrument AC plug removed from AC source, connect

an electrical jumper across the two AC plug prongs.

Place the AC switch in the on positioin, connect one lead of

ohm-meter to the AC plug prongs tied together and touch other

ohm-meter lead in turn to each exposed metallic parts such

as antenna terminals, phone jacks, etc.

If the exposed metallic part has a return path to the chassis,

the measured resistance should be between 1MΩand 5.2MΩ.

When the exposed metal has no return path to the chassis

the reading must be infinite.

An other abnormality exists that must be corrected before the

receiver is returned to the customer.

IMPORTANT SAFETY NOTICE

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified

by in the Schematic Diagram and Replacement Parts List.

It is essential that these special safety parts should be replaced with the same components as recommended in this

manual to prevent Shock, Fire, or other Hazards.

Do not modify the original design without permission of manufacturer.

Leakage Current Hot Check (See below Figure)

Plug the AC cord directly into the AC outlet.

Do not use a line Isolation Transformer during this

check.

Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor

between a known good earth ground (Water Pipe, Conduit, etc.)

and the exposed metallic parts.

Measure the AC voltage across the resistor using AC

voltmeter with 1000 ohms/volt or more sensitivity.

Reverse plug the AC cord into the AC outlet and repeat AC

voltage measurements for each esposed metallic part. Any

voltage measured must not exceed 0.75 volt RMS which is

corresponds to 0.5mA.

In case any measurement is out of the limits sepcified, there

is possibility of shock hazard and the set must be checked

and repaired before it is returned to the customer.

Leakage Current Hot Check circuit

TOSHIBA OF CANADA LTD.

191 McNABB STREET, MARKHAM.

ONTARIO, L3R 8H2, CANADA

TEL : (905)470-5400

1.5 Kohm/10W

To Instrument's

exposed

METALLIC PARTS

Good Earth Ground

such as WATER PIPE,

CONDUIT etc.

AC Volt-meter

0.15uF

Product Specifications

Model

44HM85 Horizontal Size (Inches) 39.9

Height (Inches) 29.2

Depth (Inches) 14.3

Weight (lbs.) 56.2

Power Requirement AC 120V, 60Hz

Television System American TV Standard, NTSC, ATSC with STB

Television Channels VHF: 2 - 13

UHF: 14 - 69

CATV: 1 - 125

Power Consumption (W) 210W

Antenna 75 ohm External Terminal for VHF/UHF

Audio Output (W) 15W x 2

External Input/Output Ports A/V input (3 set)

Monitor out (1 set)

S-Video input (3)

COLORSTREAM HD input (2 set)

RGB input (1)

HDMI input (1)

RGB audio input (1 set)

UPGRADE port (1)

RF input (1)

• This model complies with the specifications listed below.

• Designs and specifications are subject to change without notice.

• This model may not be compatible with features and/or specifications that may be

added in the future.

SPECIFICATIONS

Function Status Indicators

Lamp indicator, operation indicator, and temperature indicator located below the front panel controls,

reveal the operating status of the DLP projection TV.

Operation Indicator

Lamp Indicator

Temperature Indicator

Off Power cord is not connected.

Red Power Cord is connected, unit is on standby mode.

Green TV turns on.

Orange (flashing) Preparing operation in standby mode.

Red (flashing) There is a problem with the lamp or around it. Contact

an authorized service center.

Green (flashing) The lamp cover is not closed.

Red The projection TV has shut down due to overheating.

After viewing the phrase “Thermal High Error”.

Red (flashing) The projection TV shut down due to the cooling fan

trouble. Contact an authorized service center.

Orange Thermal warning.

Operation Indicator

Lamp Indicator

Temperature Indicator

DESCRIPTION OF CONTROLS

S-VIDEO

VIDEO

AUDIO

(R)

(L)/

MONO

AV3

INPUT

HDMIINPUT

PC/DTV

(SXGA/

480p/

576p/

720p/

1080i)

(L)

AUDIO

(R)

RGBINPUT

DVI/ RGBINPUT

MONITOR

OUT

A/V2

INPUT

A/V1

INPUT

VIDEO

(L)

AUDIO

(R)

S-VIDEO

MONO

COMPONENT

(L)

AUDIO

(R)

480i/480p/

576i/576p/

720p/1080i

480i/480p/

576i/576p/

720p/1080i

INPUT2

INPUT1

HDMI INPUT

PC/DTV

(XGA/

480p/

720p/

1080i)

(L)

AUDIO

(R)

RGB INPUT

MONITOR

OUT

VIDEO 2

INPUT

VIDEO 1

INPUT

VIDEO

(L)

AUDIO

(R)

S-VIDEO

MONO

COLORSTREAM HD

(L)

AUDIO

(R)

480i/480p/

720p/1080i 480i/480p/

720p/1080i

INPUT 1

INPUT 2

Rear Connections Panel

Mini glossary

JACK A connection on the back of a TV, VCR, or any other A/V device. This includes the RF jack and the Audio/Video jacks that are

color-coded.

SIGNAL Picture and sound traveling through cable, or over the air, to your television screen.

S-VIDEO In

A connection available

with some high-end

equipment that provides

even better picture quality

for Video 2.

Video 1 or 2

Connects the video sig-

nals from various types

of equipment.

Connecting cables and external equipment to your TV.

Left/Right Audio

Used for stereo sound

from various types of

equipment.

UPGRADE PORT

This port is used to upgrade

the software version and

debug without changing the

hardware.

Be careful not to use this

port. Just contact your deal-

er or service centre.

RGB Input

Connect the TV output

connector from a PC/DTV

to the appropriate input

port.

RF Connector: Antenna

Used to connect analog

cable or antenna signals

to the television, either

directly or through your

cable box.

COLORSTREAM HD 1-2

Connect a ColorStream HD

video/audio device to these jacks.

Refer to your DVD manual for further

information.

HDMI

connect a HDMI signal

to HDMI.

Front Connection Panel

There are four jacks on the left side on your projection TV

that make connecting Audio/Video devices like video games

and camcorders very simple.

The jacks are like those found on the back jack connection

panel. This means that most equipment that connects to

those types of jacks on the rear jackpack, may be connect-

ed to the front connection panel.

To use the front jacks as the signal source, select them

using Main Input menu as described on page 44. They will

be named "Front Video" in the Main Input menu.

If you input both Front Video and

S-Video, only the S-Video will

work.

If you're connecting a video game

device, make sure to change the

picture settings with the Picture

Mode option in the PICTURE

menu.

Mini glossary

A/V CABLESAudio/Video cables. Three cable connectorÑRight audio (red), Left audio (white), and V ideo (yellow). A/V cables are used

for stereo playback of videocassettes and for higher quality picture and sound from other A/V devices.

A/V DEVICE Any device that produces video or sound (VCR, DVD, cable box, or television).

Front A/V Panel

S-VIDEO

VIDEO

FRONTA/V

AUDIO

(R)

(L)/

MONO

Left/Right Audio

Used for stereo

sound from various

types of equipment.

Video

Connects the video

signals from any

piece of equipment.

S-Video

A connection available on

some very high-end equip-

ment that provides better

picture quality than video

input.

Remote Control Functions in TV Mode

1 2 3

4 5 6

7 8 9

MODE LIGHT POWER

TV/VIDEO HDMI

RGB

VCR

CABLE

DVD SAT

MUTE

SWAPPIPCH- PIPCH+

PIP

PIC SIZE

REC

STOP

PAUSE

REW

PLAY

MENU EXIT

CC FREEZE

PIP INPUT

VOL CH

SURF

SAP VIDEO

C/S HD2C/S HD1

FRONT

SKIP

ENTER

CH RTN

SURF

Scrolls the Surf channel list.

Brings up the main

menu to the screen.

EXIT

Clears all on-screen dis-

plays and returns to TV

viewing from any menu.

FREEZE

Freezes the currently-viewed pic-

ture. Sub picture is frozen in

PIP/DW picture mode.

VIDEO

Adjusts the factory preset

picture according to the

room.

PIPCH+

Changes to next higher PIP

channel.

SWAP

Switches the picture from

PIP, POP, or twin picture to

the main screen.

MUTE

Switches the sound on or off

THUMBSTICK

Allows you to navigate the on-screen

menus and to adjust the system set-

tings and preferences, by moving to

an option with

 

and selecting the

highlighted option with .

TV/VIDEO

Selects: Analog, Video1,

Video2, Front Video,

Colorstream HD 1-2 and RGB

and HDMI input sources .

MODE

Selects the remote operating

mode: TV, VCR, Cable, DVD

and Satellite. Select other oper-

ating modes, for the remote to

control external devices.

FRONT

Selects the front video signal if

a device, such as a camcorder

or game player, is connected

to the front video input jack.

HDMI

Selects: HDMI-DTV and

HDMI-PC input sources.

SAP

Selects: Mono, Stereo, and

SAP.

PIPCH-

Changes to next

lower PIP channel

PIP

Toggles between PIP, POP

(Picture-outside-Picture)

and Twin picture mode.

LIGHT

Illuminates the remote con-

trol keys.

INDICATOR LIGHTS

Show active remote mode

every time any button is

pressed.





Remote Control Functions in TV Mode

1 2 3

4 5 6

7 8 9

MODE LIGHT POWER

TV/VIDEO HDMI

RGB

VCR

CABLE

DVD SAT

MUTE

SWAPPIPCH- PIPCH+

PIP

PIC SIZE

REC

STOP

PAUSE

REW

PLAY

MENU EXIT

CC FREEZE

PIP INPUT

VOL CH

SURF

SAP VIDEO

C/S HD2C/S HD1

FRONT

SKIP

ENTER

CH RTN

POWER

Turns your TV or any other

programmed equipment on

or off, depending on mode.

CHANNEL UP/DOWN

Scrolls through available channels in

EZ Scan memory.

NUMBER KEYPAD

For direct channel selection and

programming functions.

ENTER

When in the menu system

and other on-screen dis-

plays, selects highlighted

options.

RECORD, PAUSE, REW,

FFWD, PLAY, STOP

Control the functions on your VCR.

VOLUME UP/DOWN

Increases/decreases the sound

level.

PIC SIZE

Changes the screen format or

aspect ratio.

SKIP

Playing CDs: Selects

songs.

Playing DVDs: Selects

movie chapters.

C/S HD1,HD2

Selects ColorStream HD signal

sources, such as DVD or HD

receiver.

ENTER

When in the menu system and

other on-screen displays,

selects highlighted options.

CH RTN

Tunes to the last channel

viewed.

Selects a closed caption mode

for displaying captioning infor-

mation if available on program.

PIP INPUT

Selects the input source for the

sub picture.

RGB

Selects: RGB-DTV and

RGB-PC input sources.

On-Screen Displays

This page describes your on-screen display and information banner options.

Mute

Main Channel Display

Displays current channel number.

PIP Display

This display

appears when

PIP is active.

Volume

Volume level is displayed while

adjusting the sound.

Mute

Appears

when sound

is muted.

TV 13

CATV 16

11:17 AM

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