Toshiba HM67, HM167 Service 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 of this 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 of these units.
4.
Become familiar with PCB locations
and
their functions as they relate
to general diagrams of the 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: Technical_Training@tacp.com
© 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 "Off Air" (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
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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.
DLP-07-1
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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
DLP-07-1
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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
DLP-07-1
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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
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
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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 engine capabilities (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 Audio and Theater Link output.
.
!
;
;
\ Control
SO
card applications. !
\
\Input device
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
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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! i
l
!
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
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.
DLP-07-1
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