Toshiba HM67 User manual

2007 Toshiba DLP
HM67 and HM167
HD 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
by
providing an operational overview, preferred disassembly method
and "Fix-on-first-Call" troubleshooting methods.
Objectives: Upon completion ofthis training module, the technician will:
1. Become familiar with methods used to analyze basic symptoms
leading to "board level repair
on the first call".
2. Develop an understanding of the controls and inputs associated with
the 2007 DLP Television.
3. Become familiar with the disassembly ofthese units.
4. 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
or 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, TN 37087
www.tacpservice.toshiba.com/tacp E-Mail: [email protected]
© 2005 Toshiba America Consumer Products, LLC

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
in High Definition. In order for these sets to display a
High Definition picture, the set must receive one
of the
following:
o An "OffAir" (terrestrial)
HD broadcast.
o
An HD cable broadcast.
o An
HD satellite broadcast.
o
An HD input from an HD 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 an HDMI
input but will down convert it to 720p for display
purposes.
. 0 Models ending in just 67 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
be used to input a UVI signal (via an
adaptor cable).
• The OSD menu must be set to Analog Audio.
• The audio cables must
be connected to the
PC/HDMI-1 audio connectors.
o HDMI 2 &3 are normal HDMI inputs.
• Integrated Digital and Analog Tuning.
• Three HDMI Digital
HD multimedia interfaces.
• Two sets of ColorStream
HD component inputs.
•
SRSWOW
• Digital Audio Output (Optical connection with Dolby).
• Cable Clear
DNR (digital noise reduction -Picture).
Figure 1
is a photo of the front of the 50HM67, the unit we used for this training module.
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2007 Toshiba DLP Television
DLP-07-1
Figure 1
Figure 2
is a photo of 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.
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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
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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
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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 by
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
more toward thlt ,eal' tv r..1;)lls0 "lip's
the mma!ning tics.
Figure 8
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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
of 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 of the boards that comprise our chassis. We will begin by
looking at Figure 10, a photo
of the entire chassis, taken from a top left viewing angle.
Comparing Figure 10 with Figure
9, 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
11 thru 14 we will discuss each individual board.
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•
•
2007 Toshiba DLP Television
DLP-07-1
Figure 10
4
i5il
:;y ~.~
~.·.·:;.·I
~2 ;:"f>%
i ':l
~---;-~.,:q
t'l
~"l
'i· .. ~.
~'
\.
".
.
............................ __ ......... _ ...... _ .............. _ .................. " ... - .. -
·
·
·
·
'1
Input device for all anaiog signals; Video, ColorStream, RGB, SNideo, Analog Audio. •
:
•
·
:
Output deVIce for fixed left and Right Analog Audio. :
·
t
:
Switching
for an;\!og inputs. ·
•
,
:
,
TV MicroprocessorfuncUons: ATSCINTSC tuning. MTS Processor, Audio Processor, !
AV Switching, Digital light Engine, Power to chassis, !
LED functions, Remote and Front Keyboard commands. !
•
•
:
Audio processinu (except final amp). ·
·
:
:
ATSC/NTSC tuner on board. ·
,
·
•
~ ... ,.. ................ "".",, ... ""' .... _ ......... _ .. _ .. "'.....................................ft·,. .. "' .. ,. ............ _ ....... "" ..... "" ................. "" .............. __ ...................... "' ........ _ ...... _ ... _ .. - ... ,.. .................. __ .... ~ ........... .
Figure 11
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2007 Toshiba DLP Television
DLP-07-1
~- .... -- .. - ...... -................- ......... -*"" ................ "' ......................................... --", ... ~ ..... - ....... - .... ", ............. "" ..................... ""t
. .
/ AID and DIA conversions. i
l :
/ i
I Up or Down Converting 81gnals to accommodate light l
I enginecapabilities (720p·1080p). !
Control and Processing of all Digital Signals. !
j
i
Developing and Outputting LVDS Signals to the light '
I,
engine.
\
\ Control of TV Micro via lie bus lines. !
i
\
\
\.
Provide an Optical Audioand Theater Link output. . !
;
;
\ Control SO card applications. !
\
\Inputdevice for 3 HDMI inputs. !
~
~ •• - ...... - ................... "' ............................... - ............... « .... - .... -.- ............. "" ................. "" ............................ .
Figure 12
_1T',.·""'* .. 1i'· ....... ·"'·"''''IIO ....... _IW>~ ...... '''' ... --~lf> ............. 1'
#~ . ;t
•• " Audio Power AmplifIcation ...
, I
*",.,. I~
/ Output to Speakers :'
, I
, .
1/1##~ .............. ""'/Of ......... ' ................................... #l
H.Mfi1 eo.wd ~."
-.#
."
•••
Figure 13
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2007 Toshiba DLP Television
DLP-07-1
f .......... -_ .................................. "' ..... _-,."' ....... - ......... - .... -_ ....................... - ............ -_ .......... iii .... .. "''''··-7 ,. -
! Prollides Standby and Operating Voltages to char.sls. !
·
; :.
· .
i 5V1. 12V_ $i9, 32V to Tuner, 31V Audio Vcr;, ,I
• 12VDMD. and 120VAC Ballast Supply. •
i! 12V_Slg Is stepped down or regulated On til" Mail! il
! Board
to 5V_Vcc_DDR.12V_Audlo. 3.0V. 2.SV. 3.3VO. J
: and 6.nVO. i
: :
: 1
i 5V1 Is stepped down on the Main board to 3.3V1 /
·
• •
.
\. , !
. .
\ :
\, ,
.
I
,
\ 1
\ i
\\
. HM87 Board
t.ay/ut
.
\\ .
'Ii",-,.
...
\\ •.
~\
\\ ,)
"',o'
Figure 14
Fix on the First Call
Knowing the functions of each board is invaluable in determining what to bring on 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
is to spend a small amount of time talking to the custom~r and
asking the right questions.
During this training,
we 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
be helpful in
determining problem areas in 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".
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i
Dead Set
Customer
reports ..
"Dead Set"
rt:!nplug the set for 10-15
Eonds and plug back in.
Defined
as no Power,
:
no picture, and no
Is the Yes
sound using Remote Set
plugged in?
C. ontral'and.·· Power f--_.-<
I.
button. (No LED
Indication)
No
Plug the set in and Plug in a
known good
tum it on.
device and see if the
outlet is active.
Yes Does
it
No
Work now?
Does
The
new device
Work?
Resolved
J a surge protector or
power strip is being used, No
QO directly into wall outlet.
~
Is
there
Another outlet
The customer needs to
check the wall sWitches in
the room. If none control
the outlet, most liKely he
needs
to cail his
electrician or check the
electrical br::;:'._.::;,
Figure 15
(1 of 3)
2007 Toshiba DLP Television
DLP-07-1
If a power strip or surge
Protector is being used,
The
customer should also
use II for the following
steps.
Yes Yes
Yes
If there Is a problem
with the outlet, the
Yes
known good device
will work in the new
outlet.
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2007 Toshiba DLP Television
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Dead Set
(Continued)
Insure the Following Steps are Taken
Plug the TV Into the
Outlet used for The
second Device.
Does
It Yes
Work now?
No
Power Supply
(1
s' Choice)
Main Modul~
(2
nd
Choice) )
Figure 15a
(2
of 3)
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2007 Toshiba DLP Television
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Dead Set
(Continued)
Insure the Following Steps are Taken
If a surge protector or
power strip is being
used.
plug directly
into the wall outlet.
Does It Yes
Work now?
Have Customer
No Replace power
strip
Plug in a known good
device and see
if the
outlet is active,
The customer needs to
check. the wall switches in
the room, If none control
the 0'.:::";:, ,nost likely he No Power Supply
nGGds to call his (1" Choice)
1;IIectricI,,'1
or check the
electrical breakers.
It appears the customer
has a bad outlet
or it Is
controlled by a switch.
Main Module
(2
nd
Choice)
Figure 15b
(3 of 3)
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2007 Toshiba DLP Television
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Video Problems
Figures 16 through 16e will walk us through several paths involved
in analyzing video
problems.
c ust;;-";;';;-~-l
Symptom
No Picture .. or i
BadPictur~
Distorted
Picture
No Picture?
Or
Distorted
Picture?
No Video
No Picture is
defined as a
completely black
or completely
white screen.
Is there
A
menu when the
Menu button is
Pushed?
No
~"'"
Digital (Seill~
Yes
noisy, poor
quality, or color
problem.
Have the customer make
slIre the lamp il; lit. Tilis
can 00 seen by looking
Ihrought the lamp door
louvers at thot> rear of the
Sdore moving on, have
(he customer ltnplug the
set for '\O-1!, seconds
and plug back in,
Which input(s)
, have no picture?
Select
Video Problems
Smudges, Blotches.
spot!>, etc. are most
likely" pm!;le!'n in the
Ught Palh.
Press uMenu".
Which Input(s)
Is it Distorted?
Are Distorted?
Yes
Select
Is just the Menu No
Distorted?
Yes
I
~------~---r---
Select one (based on customers' answers) I
Make sure the
~k;;ure the
Make sure the
Make sure the
source devie" source cables are
source cable is
I
Signal cable Is
and cable ar"
,
properly
connected and
connected and
hooked up and
! connec ted and '
contains a sign~1.
working. working.
contain signals. '
Figure 16
(1 of 6)
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2007 Toshiba DLP Television
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Insure the Following Steps are Taken
NTSC Only
ATSCOnly
Enter Menu Yes Enter Menu
EnsureJripot
is
Ensure
input is
Properly'Set for i Propei1ySet for
ANT. ANT.
Main Module
1·
t Choice
Select "Cablel
Antenna"
Select "Cablel Antenna"
Confirm Channel i i Confirm Channel
I'
Programming
Programming,
Is
No Picture No
~
Ry~O~d1 (Mol" ~d:I:)
( Main Module Yes
Resolved Resolved
Figure 16a
(2 of 6)
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2007 Toshiba DLP Television
DLP-07-1
Insure the Following Steps are Taken
Note: It a OV! device is
being used via an adaptor.
with the HM67!167 series
sets, the input MUST be on
HDMI1 and the Audio
EnterCustomer
cables MUST be connected
MimiJ
to the PC/HOMI 1 Inputs.
G
Select
HDMI1. 2, or 3 (dopending
011 which input the HDMI
cable
is connected to, Ensure the
input
selection Is
properly set
in
[M,"' "'" th, HOM. 'W'"
is running and i,l g,~od
the menu.
working tHcler.
Is
No Picture
Restored?
(Digital (Seine) Bd
Resolved
Figure 16b
(3 of 6)
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2007 Toshiba DLP Television
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Insure the Following Steps are Taken
E"nter Customer
Menu
Select "AV1 or
AVZ"
Is
No
Picture
Restored?
Main Module
Make sure there is flO
cable plugged into the
S-Videojack..
Make sLlre the Input device
is running and in good
working order.
Is
Picture
No
Restored?
Apply signal to
AV1 and select
AV1 as "Main
Input" in menu.
Is
No
Picture
Restored?
Figure 16c
(4 of 6)
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2007 Toshiba DLP Television
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Insure the Following Steps are Taken
Enter Customer
I Menu I
j-
Mak<:! sure the Input device
is running, in good
working ordor and
connected to the selection
Select Video-1, 2
made in iI,is sl"p.
or 3 (Depends on
I Menu and input
being used)
Is
Yes
Picture No
Restored?
If S-Video is o~r~~(~
panel only, change front
panel.
For Rear mounted,
Change Main Module.
Figure 16d
(5 of 6)
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2007 Toshiba DLP Television
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Insure the Following Steps are Taken
Enter Customer
Menu
The solection of
ColorStream-1 or 2 is
d&pendent on where the
ColorStream
input cables Select
are connected, ColorStream 1
or
~
2 (HD 1 or HD2)
Mskio sura the Input device
is running and in good
working order.
CS2
Is Is
No
Picture Yes Yes Picture
No
Restored? Restored?
Resolved
Main Module
Figure 16e
(6 of 6)
Audio Problems
Figures 17 through 17e will wc:llk us through several paths involved in analyzing audio
problems.
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Sound
Sound
Problems
Problems
HM67/167
Distorted
Distorted Sound
No Sound?
lathere
Sound
is defined as a
Depress the Mute;
Or
Distorted
l
noisy or poor
button on the
Distorted
Sound
quality type of
Remote Control.
Sound?
Now?
problem.
No
No Sound
We have just
No Sound is
determined the
"k" sur" the Sound
Source f'S a good ch:t:lO
defined as a
Distortion is
[:
input signal.
complete loss of
coming from the
AUdio.
, Signal Path.
! DSgable tn'tt >¥P.tt(l,
Make Sure th" Voium ..
satting is at least 1-4 scal9
and the speAkor selecUon
is on HJntetrtat" OR "0,,1',
Is The Mute Yes
FUnction
Active?
No
IS there
No Sound using
All inputs?
·
Main Module
No
~~ChOiCe)
C
Which
<
All
lnput(s) have
No Sound?
Select
Select one (based on customers' answers)
Is ita
Yes
Buzzing or a
Buzzing
Humming
Sound?
Figure 17
(1 of 6)
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