Toshiba HM67 User manual

2007 Toshiba DLP

HM67 and HM167

Ready DLP Televisions

TOSHIBA

_at

1_'!r'11i~A

•••••••••••••••••••••••••••

2007 DLP Television

DLP·07·1 Disassembly,

Block

Diagram &Troubleshooting

Course: Servicing the HM67 DLP Televisions

Model Year: 2007

Chassis: DLP67

Models: 50HM67, 57HM67, 65HM67, 57HM117/167,

and

65HM117/167

Purpose: Training Module DLP-07-1 introduces the HM67 DLP Television

providing an operational overview, preferred disassembly method

and "Fix-on-first-Call" troubleshooting methods.

Objectives: Upon completion ofthis training module, the technician will:

Become familiar with methods used to analyze basic symptoms

leading to "board level repair

the first call".

Develop

understanding of the controls

and

inputs associated with

the 2007 DLP Television.

Become familiar with the disassembly ofthese units.

Become familiar with PCB locations

and

their functions as they relate

to general diagrams ofthe units.

Product

Specific Service Manuals:

This training is designed as an aid to the technician in servicing Toshiba products. It is not a replacement for the

appropriate service manual(s). Toshiba service manuals contain product and model specific information and must

be consulted prior to servicing any product.

Product

Safety Precautions:

Product Safety Precautions

are

described in the Toshiba service manual(s) for products and models covered in this

training. All safety precautions and checks must be complied with before returning any product to the customer.

Servicers who defeat safety features

fail to perform safety checks may be liable for any resulting damages and

may expose themselves and others to possible injury.

TOSHIBA AMERICA CONSUMER PRODUCTS, LLC

National Service Division -1420B Toshiba Drive -Lebanon,

37087

www.tacpservice.toshiba.com/tacp E-Mail: [email protected]

2007 Toshiba DLP Television

DLP-07-1

Introduction

Capabilities of the 2007 DLP Televisions:

Screen Resolution:

Screen Sizes:

HDMI Inputs:

Features:

• Fully Integrated -Receives NTSC, ATSC. and QAM cable

signals

High Definition.

order for these sets to display a

High Definition picture, the set must receive one

the

following:

o An "OffAir" (terrestrial)

broadcast.

cable broadcast.

o An

satellite broadcast.

input from

DVD

unit.

• Limited by the Light Engines capabilities.

o Several Models within the series will contain Ught

Engines capable of processing and reproducing

1080p, while others will except 1080p as

HDMI

input but will down convert it to 720p for display

purposes.

. 0 Models ending in just

will display 720p.

o Models ending in 167 will display 1080p.

• Three screen sizes (listed by model)

o 50HM67 -50"

o 57HM167 57"

o 65HM67 -65" 65HM167 -65"

• Three HDMI inputs.

o Only HDMI1 can

used to input a UVI signal (via

adaptor cable).

• The OSD menu must

set

Analog Audio.

• The audio cables must

connected to

the

PC/HDMI-1 audio connectors.

o HDMI 2 &3 are normal

HDMI

inputs.

• Integrated Digital and Analog Tuning.

• Three HDMI Digital

multimedia interfaces.

• Two sets of ColorStream

component inputs.

•

SRSWOW

• Digital Audio Output (Optical connection with Dolby).

• Cable Clear

DNR

(digital noise reduction -Picture).

Figure 1

a photo

the front

the 50HM67, the unit we used for this training module.

DLP-07-1

10f44

2007 Toshiba DLP Television

DLP-07-1

Figure 1

Figure 2

a photo

the rear jack panel and inputs to the Digital (Seine) module.

Note: The cover plate has been removed from the Smart Card slot for clarity purposes.

Figure 2

Disassembly

Figure 3 is a photo showing screw proximities to aid in removing the back cover.

DLP-07-1

20f44

----

2007 Toshiba DLP Television

DLP-07-1

Figure 3

Once the ten screws are removed from the back cover, we will see a split chassis much

like we have seen in the past. Figure 4 is a photo depicting a split chassis.

Split

Chassis

Figure 4

DLP-07-1

30f44

2007 Toshiba DLP Television

DLP-07-1

Figure 5 is a photo showing the four screws that must be removed to move the Main

chassis and Light Engine chassis'.

Figure 5

Figure 6 shows a wire tie that can be squeezed and removed.

Figure 6

DLP-07-1

40f44

2007 Toshiba DLP Television

DLP-07-1

Figure 7 is a pictorial of how to squeeze the new type wire tie.

Reusable

wire

tie

You

can

pullout

this

tie

pushing

from

both

sides

Figure 7

Figure 8 explains the rest of the tie/clip removal.

You

can

now

movill

the

cha1J!.Iis

Remove

",1m

from

toward

thlt

,eal'

r..1;)lls0 "lip's

the

mma!ning

tics.

Figure 8

DLP-07-1

50f44

2007 Toshiba DLP Television

DLP-07-1

Board/Function Familiarization

The two chassis sides can now be pulled from the cabinet where complete access will

be available for any necessary troubleshooting. Figure 9 is a graphic layout

the Main

side chassis half. This layout is exactly as it appears looking from the top.

HM67 Board Layout

Audio

Out·

Figure 9

Now, let's examine each

the boards that comprise our chassis. We will begin by

looking at Figure 10, a photo

the entire chassis, taken from a top left viewing angle.

Comparing Figure 10 with Figure

we can see that the photo and graphic

representations are identical. Therefore, as we progress, we will use the graphic

representation for our training purposes.

Using Figures

thru 14 we will discuss each individual board.

DLP-07-'1

60f44

•

2007 Toshiba DLP Television

DLP-07-1

Figure 10

i5il

:;y

~.~

~.·.·:;.·I

;:"f>%

':l

~---;-~.,:q

t'l

~"l

'i·

............................

.........

......

..............

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...

Input

device

for

all anaiog signals; Video, ColorStream,

RGB,

SNideo, Analog Audio. •

•

Output

deVIce

for

fixed

left

and

Right

Analog Audio. :

Switching

for

an;\!og inputs. ·

•

MicroprocessorfuncUons:

ATSCINTSC tuning.

MTS

Processor, Audio Processor, !

Switching, Digital

light

Engine, Power

chassis, !

LED functions, Remote and Front Keyboard commands. !

•

Audio

processinu

(except final amp). ·

ATSC/NTSC

tuner

on board. ·

•

...

,..

................

"".",,

...

""'

....

.........

"'.....................................ft·,.

............

.......

.....

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,..

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Figure

DLP-07-1

70f44

2007 Toshiba DLP Television

DLP-07-1

....

......

-................-

.........

-*""

................

.........................................

--",

...

.....

.......

....

.............

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""t

. .

/ AID and DIA conversions. i

l :

/ i

I Up

Down Converting

81gnals

to accommodate

light

I enginecapabilities (720p·1080p). !

Control and Processing

all Digital Signals. !

Developing and Outputting

LVDS

Signals to the light '

engine.

\ Control

TV Micro

via

lie bus lines. !

Provide

Optical Audioand Theater Link output. .

;

\ Control

card applications. !

\Inputdevice

for

HDMI

inputs. !

••

......

...................

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-.-

.............

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Figure 12

_1T',.·""'*

1i'·

.......

·"'·"''''IIO

.......

_IW>~

......

''''

...

--~lf>

.............

••

Audio

Power AmplifIcation

...

, I

*",.,.

Output

Speakers

, I

, .

1/1##~

..............

""'/Of

.........

...................................

H.Mfi1

eo.wd

~."

-.#

•••

Figure

DLP-07-1

of44

2007 Toshiba DLP Television

DLP-07-1

..........

..................................

.....

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.......

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....

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iii

....

"''''··-7

! Prollides Standby and Operating Voltages

char.sls. !

; :.

· .

i 5V1. 12V_

$i9,

32V

Tuner, 31V

Audio

Vcr;,

• 12VDMD.

and

120VAC

Ballast

Supply.

•

i! 12V_Slg Is stepped

down

regulated

til"

Mail! il

! Board

5V_Vcc_DDR.12V_Audlo.

3.0V. 2.SV. 3.3VO. J

: and 6.nVO. i

: :

: 1

5V1

Is stepped

down

the Main

board

3.3V1 /

• •

\. ,

. .

\ :

\, ,

\ 1

\ i

. HM87 Board

t.ay/ut

'Ii",-,.

...

•.

"',o'

Figure

Fix

the

First

Call

Knowing the functions of each board is invaluable in determining what to bring

the

service call before leaving the shop. Once this learning curve is mastered.

the

technician can apply a basic troubleshooting flowchart to any symptom that a customer

may describe during

hi:::./her

initial call requesting service.

The key to success

spend a small amount of time talking to the

custom~r

and

asking the right questions.

During this training,

will use basic flowcharts to provide enough information to

accomplish this worthwhile goal.

We will also provide a graphic of the LED "Blink" codes that can

helpful

determining problem areas

the HM67 and HM167 series

DLP

sets.

Dead Set

Figures 15 through 15b are prime examples of a basic flowchart of what the customer

thinks is a "Dead Set".

DLP-07-1

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