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.
DLP-07-1
10f44

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.
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 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
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
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.
DLP-07-'1
60f44

•
•
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
DLP-07-1
70f44

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
DLP-07-1
R of44

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".
DLP-07-1
q of44