Toshiba 20HL85 Service Manual
FILE NO. 050-200528GR
(MFR’S VERSION A)
SERVICE MANUAL
LCD COLOR TELEVISION
20HL85
The above model is classified as a green product (*1), as indicated by the underlined serial number.
This Service Manual describes replacement parts for the green product. When repairing this green
product, use the part(s) described in this manual and lead-free solder (*2).
For (*1) and (*2), see the next page.
DOCUMENT CREATED IN JAPAN, September, 2005
(*1) GREEN PRODUCT PROCUREMENT
The EC is actively promoting the WEEE & RoHS Directives that define standards for recycling
and reuse of Waste Electrical and Electronic Equipment and for the Restriction of the use of
certain Hazardous Substances. From July 1, 2006, the RoHS Directive will prohibit any
marketing of new products containing lead.
Increasing attention is given to issues related to the global environmental. Toshiba Corporation
recognizes environmental protection as a key management tasks, and is doing its utmost to
enhance and improve the quality and scope of its environmental activities. In line with this,
Toshiba proactively promotes Green Procurement, and seeks to purchase and use products,
parts and materials that have low environmental impacts.
Green procurement of parts is not only confined to manufacture. The same green parts used in
manufacture must also be used as replacement parts.
(*2) LEAD-FREE SOLDER
This product is manufactured using lead-free solder as a part of a movement within the CE
industry at large to be environmentally responsible. Lead-free solder must be used in the servicing
and repair of this product.
WARNING
This product is manufactured using lead free solder .
DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT !
The melting temperature of lead-free solder is higher than that of leaded solder by 86°F to 104°F
(30°C to 40°C). Use of a soldering iron designed for lead-based solders to repair product made
with lead-free solder may result in damage to the component and or PCB being soldered. Great
care should be made to ensure high-quality soldering when servicing this product especially
when soldering large components, through-hole pins, and on PCBs as the level of heat
required to melt lead-free solder is high.
A1-1
SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES
As for the places which need special attentions,
they are indicated with the labels or seals on the
cabinet, chassis and parts. Make sure to keep the
indications and notices in the operation manual.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
3. USE THE DESIGNATED PARTS
The parts in this equipment have the specific
characters of incombustibility and withstand
voltage for safety. Therefore, the part which is
replaced should be used the part which has
the same character.
Especially as to the important parts for safety
which is indicated in the circuit diagram or the
table of parts as a mark, the designated
parts must be used.
4. BE CAREFUL WITH THE
LCD PANEL
Avoid a shock to the panel while servicing.
Take enough care to deal with it.
5. PUT PARTS AND WIRES IN THE
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING
There are parts which use the insulation
material such as a tube or tape for safety, or
which are assembled in the condition that
these do not contact with the printed board.
The inside wiring is designed not to get closer
to the pyrogenic parts and high voltage parts.
Therefore, put these parts in the original
positions.
PERFORM A SAFETY CHECK AFTER
6.
SERVICING
Confirm that the screws, parts and wiring which
were removed in order to service are put in the
original positions, or whether there are the
portions which are deteriorated around the
serviced places serviced or not. Check the
insulation between the antenna terminal or
external metal and the AC cord plug blades.
And be sure the safety of that.
(INSULATION CHECK PROCEDURE)
1.
Unplug the plug from the AC outlet.
2.
Remove the antenna terminal on TV and turn
on the TV.
3.
Insulation resistance between the cord plug
terminals and the eternal exposure metal
[Note 2] should be more than 1M ohm by
using the 500V insulation resistance meter
[Note 1].
4.
If the insulation resistance is less than 1M
ohm, the inspection repair should be
required.
[Note 1]
If you have not the 500V insulation
resistance meter, use a Tester.
[Note 2]
External exposure metal: Antenna terminal
Earphone jack
HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be
found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
IMPORTANT
When you exchange IC and Transistor with a heat sink, apply silicon grease on the contact section of
the heat sink. Befor applying new silicon grease, remove all the old silicon grease.
(Old grease may cause damages to the IC and Transistor.)
A1-2
TABLE OF CONTENTS
GREEN PRODUCT PROCUREMENT ........................................................................................
LEAD-FREE SOLDER ................................................................................................................
SERVICING NOTICES ON CHECKING.....................................................................................
HOW TO ORDER PARTS ..........................................................................................................
IMPORTANT ...............................................................................................................................
TABLE OF CONTENTS..............................................................................................................
GENERAL SPECIFICATIONS ...................................................................................................
DISASSEMBLY INSTRUCTIONS
1. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ................................................
SERVICE MODE LIST ................................................................................................................
CONFIRMATION OF HOURS USED .........................................................................................
CONFIRMATION OF CHECK SUM ...........................................................................................
WHEN REPLACING EEPROM (MEMORY) IC ..........................................................................
ELECTRICAL ADJUSTMENTS..................................................................................................
BLOCK DIAGRAMS
SCALER/LVDS/MICON/ADC/JACK/AV_SW/REGULATOR ..................................................
AV_SW/TUNER/JACK/STEREO/SOUND AMP .....................................................................
POWER ...................................................................................................................................
INTERFACE.............................................................................................................................
MICON2 ...................................................................................................................................
AC ADAPTER ..........................................................................................................................
PRINTED CIRCUIT BOARDS
AV/OPERATION/REMOCON..................................................................................................
SCALER...................................................................................................................................
AC ADAPTER/HD-MI ..............................................................................................................
SCHEMATIC DIAGRAMS
AV SWITCH1 ...........................................................................................................................
TUNER/JACK ..........................................................................................................................
STEREO/SOUND AMP ...........................................................................................................
POWER ...................................................................................................................................
OPERATION/REMOCON........................................................................................................
MICON1 ...................................................................................................................................
SCALER...................................................................................................................................
ADC..........................................................................................................................................
LVDS........................................................................................................................................
JACK ........................................................................................................................................
AV SWITCH2 ...........................................................................................................................
REGULATOR...........................................................................................................................
INTERFACE.............................................................................................................................
MICON2 ...................................................................................................................................
AC ADAPTER ..........................................................................................................................
WAVEFORMS .............................................................................................................................
MECHANICAL EXPLODED VIEWS...........................................................................................
MECHANICAL REPLACEMENT PARTS LIST .........................................................................
ELECTRICAL REPLACEMENT PARTS LIST...........................................................................
A1-1
A1-1
A1-2
A1-2
A1-2
A2-1
A3-1~A3-6
B-1, B-2
C-1
C-1
C-2
C-2~C-4
D-1~D-5
E-1, E-2
E-3, E-4
E-5, E-6
E-7, E-8
E-9, E-10
E-11, E-12
F-1~F-4
F-5, F-6
F-7, F-8
G-1, G-2
G-3, G-4
G-5, G-6
G-7, G-8
G-9, G-10
G-11, G-12
G-13, G-14
G-15, G-16
G-17, G-18
G-19, G-20
G-21, G-22
G-23, G-24
G-25, G-26
G-27, G-28
G-29, G-30
H-1~H-3
I-1~J-4
J1-1, J1-2
J2-1~J2-6
A2-1
GENERAL SPECIFICATIONS
G-1 TV LCD LCD Size / Visual Size 20.04 inch / 508.9mmV
G-2 Tuning Broadcasting System US System M
G-3 Signal Video Signal Input Level 1 V p-p/75 ohm
G-4 Power Power Source AC 120V, 60Hz
G-5 Regulation Safety UL/CSA(From O/R No. W563016)
G-6 Temperature Operation +5oC ~ +40oC
G-7 Operating Humidity Less than 80% RH
System LCD Type Color TFT LCD
Number of Pixels 1366(H) x 768(V)
View Range Left/Right 89/89 degree
Up/Down 89/89 degree
Color System NTSC
Speaker 2 Speaker
Position Front
Size 1.8 x 3.9 inch
Impedance 16 ohm
Sound Output Max 2.5W + 2.5W
10%(Typical) ---
System Tuner and System 1Tuner
Receive CH Destination US (W/CABLE)
CH Coverage 2~69, 4A, A-5~A-1, A~I, J~W, W+1~W+84
Intermediate Picture(FP) 45.75MHz
Frequency Sound(FS) 41.25MHz
FP-FS 4.50MHz
Preset CH No
Stereo/Dual TV Sound US-Stereo
Tuner Sound Muting Yes
Output Level --
S/N Ratio (Weighted) --
Horizontal Resolution at DVD Mode --
-RGB Signal Output Level -Audio Signal Input Level -8.0dBm/50k ohm
Output Level at DVD --
at TV -Digital Output Level -S/N Ratio at DVD (Weighted) -Harmonic Distortion -Frequency Response : at DVD --
at Video CD --
at SVCD --
at CD --
DC --
Power Consumption at AC 90W at 120V 60Hz
at DC -Stand by (at AC) 1W at 120V 60Hz
Energy Star Yes
Per Year -- kWh/Year
Protector Power Fuse Yes
Safety Circuit Yes
IC Protector(Micro Fuse) Yes
Radiation FCC/IC(From O/R No. W563016)
Laser --
Storage -20oC ~ +60oC
A3-1
GENERAL SPECIFICATIONS
G-8 On Screen Menu Yes
Display Menu Type Icon
PC Monitor Picture Menu Yes
PC Monitor Audio Menu Yes
Picture Yes
Audio Yes
Setup Yes
Option
Locks
Brightness Yes
Contrast Yes
Hor Position Yes
Ver Position Yes
Phase Yes
Clock Yes
Auto Adjust No
Red Yes
Green Yes
Blue Yes
WXGA INPUT Yes
Reset Yes
Bass Yes
Treble Yes
Balance Yes
Stable Sound Yes
WOW SRS 3D Yes
WOW Focus Yes
WOW Tru Bass Yes
Reset Yes
Mode(Picture preference) Yes
Brightness Yes
Contrast Yes
Color Yes
Tint Yes
Sharpness Yes
Cable Clear Yes
Color Temperature Yes
Reset Yes
MTS Yes
Bass Yes
Treble Yes
Balance Yes
Stable Sound Yes
Speakers On/Off No
Dolby Virtual No
WOW SRS 3D Yes
WOW Focus Yes
WOW Tru Bass Yes
HDMI Yes
Reset Yes
Language Yes
Clock Set Yes
TV/CABLE Yes
CH Program Yes
Add/ Erase Yes
Closed Caption Yes
Picture Size Yes
Picture Scroll No
Cinema Mode Yes
Aspect Yes
Back Lighting Yes
Yes
On Timer Yes
Favorite CH Yes
CH Label Yes
VIDEO Label Yes
Yes
V-Chip Set Yes
CH Lock Yes
Video Lock Yes
Game Timer Yes
Panel Lock Yes
New Password Yes
A3-2
GENERAL SPECIFICATIONS
Control Level Yes
Stereo, SAP, Mono Yes
CH / AV(Line) / PC Yes
Color Stream HD (Component) Yes
HDMI Yes
Channel (TV/Cable) Yes
CH Label Yes
Video Label Yes
Clock Yes
Game Timer Yes
Panel Lock Yes
On Timer Yes
Sleep Timer Yes
Reset Yes
Sound Mute Yes
V-chip Rating Yes
NOT AVAILABLE Yes
Picture Size Yes
G-9 OSD Language English, French, Spanish
G-10 Clock and Sleep Timer Max Time 120 Min
Timer Step
On Timer Program Yes
Wake Up Timer No
Timer Back-up (at Power Off Mode) more than -- Min Sec
Volume Yes
Brightness Yes
Contrast Yes
Color Yes
Tint Yes
Sharpness Yes
Bass Yes
Treble Yes
Balance Yes
Picture Scroll No
Back Lighting Yes
H Position Yes
V Position Yes
Phase Yes
Clock Yes
Red Yes
Green Yes
Blue Yes
10 Min
A3-3
GENERAL SPECIFICATIONS
G-11 Remote Unit RC-KK
Control Glow in Dark Remocon Yes
Remocon Format TOSHIBA
Format TOSHIBA
Custom Code 40-BF h
Power Source Voltage(D.C) 3V
Total Keys 44 Keys
Keys
Multi Brand Keys
UM size x pcs UM-4 x 2 pcs
Power
Input
Display
Mute
1
2
3
4
5
6
7
8
9
0
100 / +10
CH Return / Ent
CH +
CH VOL +
VOL SLEEP
Picture Size
UP
LEFT / FAV MENU/ENTER/DVD MENU
RIGHT / FAV +
DOWN
EXIT
TV
CBL/SAT
VCR
DVD
ENTER
PAUSE
PLAY
STOP
REW
FF
SKIP/SEARCH|<<
SKIP/SEARCH>>|
TOP MENU
REC
CLEAR
TV/VCR
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
A3-4
GENERAL SPECIFICATIONS
G-12 Features Auto Shut Off Yes
G-13 Accessories Owner's Manual Language English / French / Spanish
Auto Search No
Comb Filter Yes
Game Position No
Power On Memory Yes
Variable Audio Out No
Mode (Picture Preference) Yes
Color Temparature Control Yes
Cable Clear Yes
SAP Yes
Stable Sound Yes
Virtual Dolby No
SRS WOW(SRS 3D/Focus/Tru Bass) Yes
CABLE Yes
CH Program (Auto CH Memory) Yes
Closed Caption Yes
Picture Size Yes
Picture Scroll No
Cinema Mode Yes
Aspect Yes
On Timer Yes
Sleep Timer Yes
Favorite CH Yes
CH Label Yes
VIDEO Label Yes
V-Chip Yes
Type USA Type
CH Lock Yes
Video Lock Yes
Game Timer(Max Time:120Min) Yes
Panel Lock Yes
Direct Input Selection Yes
PC Monitor Input Yes
Available Scan Rates (Component/HDMI) 480i/480p/720p/1080i
Auto Setup(Language/CH Program) Yes
Freeze frame No
w/Guarantee Card Yes
Remote Control Unit Yes
Rod Antenna
Poles -Terminal --
Loop Antenna
Terminal --
U/V Mixer
DC Car Cord (Center+)
Guarantee Card
Warning Sheet
Circuit Diagram
Antenna Change Plug
Service Facility List
Important Safeguard
Dew/AHC Caution Sheet
Quick Set-up Sheet
Battery Yes
UM size x pcs UM-4 x 2 pcs
OEM Brand No
AC Adapter Yes
AC Cord (for AC Adapter) Yes
AV Cord (2Pin-1Pin)
Registration Card (NDL Card) Yes
300ohm to 75ohm Antenna Adapter
Sheet Information (Return) No
Sheet Information (HDMI) No
Screw for wall hanging No
3 -D
No
No
No
No
No
No
No
No
No
No
No
No
No
No
A3-5
GENERAL SPECIFICATIONS
G-14 Interface Switch Top Power (Tact) Yes
Indicator Power Yes (Red)
Terminals Rear Video Input 1 RCA x 1
Side Video Input 2 RCA x 1
G-15 Set Size Approx. W x D x H (mm) 554 x 220 x 448
G-16 Weight Net (Approx.) 9.0kg (19.8 lbs)
G-17 Carton Master Carton No
Gift Box Material Double/ Brown
Drop Test 1 Corner / 3 Edges / 6 Surfaces
Container Stuffing (40' container) 492
G-18 Material Cabinet Front PS 94V0 DECABROM
PCB Non-Halogen Demand No
G-19 Environment Environmental standard requirement (by buyer) Green PROCUREMENT of TOSHIBA
Pb-Free Phase 3 (Phase 3A)
G-20 AC Power Adapter Provided Accessories
Power Requirement AC 120V 60Hz
Power Consumption at AC 100 W
DC Output DC Jack : DC24V 3.4A
Dimension Approx. W x D x H (mm) 200 x 90 x 60
Weight Approx. 1.5kg (3.3 lbs)
Channel Up/Menu Up Yes
Channel Down/Menu Down Yes
Volume Up/Menu > Yes
Volume Down/Menu < Yes
Menu Yes
Play No
Eject No
Skip+, Search+ No
Skip-, Search- No
Still/Pause No
Stop No
Main Power SW No
Input Select Yes
Stand-by No
On Timer No
Audio Input 1 RCA x 2(Stereo)
S - Input 1
Video Output No
Audio Output No
Component Input(w/ Analog Audio L/R)
HDMI Input(w/ Analog Audio L/R)
PC Monitor Input(w/ Analog Audio L/R) No
Digital Audio Output No
DC Jack
VHF/UHF Antenna Input
AC Outlet No
Audio Input 2 RCA x 2(Stereo)
PC Monitor Input(w/ Analog Audio L/R)
Other Terminal Headphone
w/o Handle, Stand Approx. W x D x H (mm)
Net w/o Handle, Stand (Approx.) 7.5kg (16.5 lbs)
Gross (Approx.) 12.0kg (26.5 lbs)
Content --- Sets
Material --- / --Dimensions W x D x H(mm) --Description of Origin ---
W/Color Photo Label No
W/Handle No
Dimensions W x D x H(mm) 654 x 338 x 565
Description of Origin No(Assembled In Thailand)
Height (cm) 62
Rear PS 94V0 DECABROM
Eyelet Demand No
Yes
RCA x 5
HDMI x 1(RCA x 2)
Yes
F Type
Dsub15pin x 1(RCA x 2)
554 x 94 x 403
Sets
A3-6
DISASSEMBLY INSTRUCTIONS
1.
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
REMOVAL
Put the Masking Tape (cotton tape) around the Flat
1.
Package IC to protect other parts from any damage.
(Refer to Fig. 1-1.)
NOTE
Masking is carried out on all the parts located within 10
mm distance from IC leads.
When IC starts moving back and forth easily after
3.
desoldering completely, pickup the corner of the IC using a
tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 1-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC leads
or solder lands under the IC when removing it.
Blower type IC
desoldering
machine
Masking Tape
(Cotton Tape)
Heat the IC leads using a blower type IC desoldering
2.
IC
machine. (Refer to Fig. 1-2.)
NOTE
Do not add the rotating and the back and forth
directions force on the IC, until IC can move back and
forth easily after desoldering the IC leads completely.
Blower type IC
desoldering machine
Fig. 1-1
Tweezers
IC
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
5.
Shield Wire. (Refer to Fig. 1-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 1-3
Braided Shield Wire
Soldering Iron
IC
Fig. 1-2
IC pattern
Fig. 1-4
B-1
DISASSEMBLY INSTRUCTIONS
INSTALLATION
Take care of the polarity of new IC and then install the new
1.
IC fitting on the printed circuit pattern. Then solder each
lead on the diagonal positions of IC temporarily.
(Refer to Fig. 1-5.)
Soldering Iron
Solder temporarily
Supply the solder from the upper position of IC leads
2.
sliding to the lower position of the IC leads.
(Refer to Fig. 1-6.)
Solder temporarily
Fig. 1-5
When bridge-soldering between terminals and/or the
4.
soldering amount are not enough, resolder using a Thin-tip
Soldering Iron. (Refer to Fig. 1-8.)
Thin-tip Soldering Iron
IC
Fig. 1-8
Finally, confirm the soldering status on four sides of the IC
5.
using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the IC.
If some abnormality is found, correct by resoldering.
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, always be sure to replace the IC in this
case.
Soldering IronSolder
IC
Supply soldering
from upper position
to lower position
Fig. 1-6
Absorb the solder left on the lead using the Braided Shield
3.
Wire. (Refer to Fig. 1-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
Fig. 1-7
B-2
SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit and on the remote control
for more than a the standard time in the appropriate condition. (See below chart.)
Set
Condition
TV mode
TV mode
TV mode
TV mode
ALL mode
Set Key Operations
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
VOL. DOWN
(Minimum)
Remocon
Key
0 2 sec.
1 2 sec.
6 2 sec.
8
9 2 sec.
Standard
Time
2 sec.
Releasing of V-CHIP PASSWORD.
Initialization of factory TV data.
NOTE:
POWER ON total hours are displayed on the screen.
Refer to the "
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
Check of the SUM DATA and MICON VERSION on the screen.
Refer to the "
Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display
Adjustment).
If you set factory initialization, the memories are reset such as
the channel setting, and the POWER ON total hours.
CONFIRMATION OF HOURS USED" .
CONFIRMATION OF CHECK SUM
CONFIRMATION OF HOURS USED
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
1.
Turn on the POWER, and set to the TV mode.
2.
Set the VOLUME to minimum.
3.
Press both VOL. DOWN button on the set and Channel
button (6) on the remote control for more than 2 seconds.
4.
After the confirmation of using hours, turn off the power.
MICON Version
ADDRESS DATA
INIT 000 BF
LCD ON 0000
OEC7133A_060
FIG. 1
Initial setting content of MEMORY IC.
POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
".
C-1
CONFIRMATION OF CHECK SUM
Initial total of MEMORY IC can be checked on the screen. Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
1.
Turn on the POWER, and set to the TV mode.
2.
Set the VOLUME to minimum.
3.
Press both VOL. DOWN button on the set and Channel
button (8) on the remote control for more than 2 seconds.
4.
After the confirmation of each check sum, turn off the
power.
INIT : 6D98
ROM : 0000
VOLUME: 189E
Initialsetting data check sum.
Rom correction data check sum.
AUDIO External terminal Volune.
AD CONVERTER data check sum.
SCALER data check sum.
POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
MICON Version
ADC : A057B
DVP : C457
LCD ON 0000
OEC7133A_060
FIG. 1
WHEN REPLACING EEPROM (MEMORY) IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.
Turn on the POWER, and set to the TV mode.
1.
Set the VOLUME to minimum.
2.
Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
3.
ADDRESS and DATA should appear as FIG 1.
ADDRESS DATA
INIT 000 BF
LCD ON 0000
OEC7133A_060
FIG. 1
ADDRESS is now selected and should "blink". Using the UP/DOWN buton on the remote, step through the ADDRESS until
4.
Press RIGHT/LEFT button to select DATA. When DATA is selected, it will "blink".
Again, step through the DATA using UP/DOWN button until required DATA value has been selected.
5.
Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.
6.
Repeat steps 3 to 6 until all data has been checked.
7.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
8.
After the data input, set to the initializing of shipping.
Turn POWER on.
9.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
10.
After the finishing of the initializing of shipping, the unit will turn off automatically.
11.
The unit will now have the correct DATA for the new MEMORY IC.
C-2
WHEN REPLACING EEPROM (MEMORY) IC
INIT +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E 0F
000 BF 3F 01 99 6F 08 23 F9 00 30 80 55 B3 36 03 60
010 05 12 1F 24 40 45 5D 62 45 4A 19 00 13 57 00 00
020 40 08 3E 00 00 00 00 00 00 00 00 00 00 00 00 00
030 72 99 59 68 99 59 59 99 59 40 20 88 0D 45 80 40
040 46 63 68 49 53 65 6A 30 00 5C 62 00 00 00 00 00
050 00 00 00 D0 73 14 1C 2C 24 16 00 00 00 00 00 EC
060 E6 E6 EB F2 15 F5 08 0D 07 07 73 00 00 00 06 F4
070 02 12 22 00 0D F0 F0 F0 F0 F0 26 03 26 03 1E 0F
080 1E 0F 04 18 91 40 00 00 00 00 00 00 00 00 00 00
090 00 00 3C 20 3C 20 3C 20 3C 20 00 23 27 2B 2F 32
0A0 36 3A 3E 42 46 4A 4B 4D 4F 51 53 55 57 59 5B 5D
0B0 5F 61 63 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 71
0C0 72 72 72 73 73 73 74 74 74 75 75 75 76 75 76 76
0D0 76 76 77 77 77 77 78 78 78 78 79 42 00 00 00 EF
0E0 06 04 0B 01 00 01 07 3C 4F 02 0A 14 3F 49 00 00
0F0 00 00 00 00 00 50 19 32 19 00 19 44 43 40 40 40
100 10 92 FF FF 10 30 B0 D0 F0 7B 30 57 7A 15 82 D9
110 4D 8C 28 70 20 60 10 80 20 A0 00 2C 0D 00 88 0F
120 84 10 C0 E0 12 19 00 F0 0F 00 7F 12 18 EB 83 7F
130 F9 5E CA 52 18 F7 4C 33 4C 29 73 74 74 74 75 75
140 23 27 2B 2F 32 36 3A 3E 42 46 4A 4B 4D 4F 51 53
150 55 57 59 5B 5D 5F 61 63 66 67 68 69 6A 6B 6C 6D
160 6E 6F 70 71 71 72 72 72 73 73 73 74 74 74 75 75
170 75 76 75 76 76 76 76 77 77 77 77 78 78 78 78 79
600 31 F0 28 1F 08 08 20 80 80 80 7F 7F 7F 66 6E 80
610 20 04 04 02 00 00 00 01 00 00 00 00 00 00 00 00
620 38 30 20 10 10 08 20 80 80 80 7F 7F 7F 66 6E B8
630 28 04 04 02 00 00 00 01 00 00 00 00 00 00 00 00
640 41 F0 60 A0 08 08 20 80 80 80 7F 7F 7F 66 6E 80
650 20 04 04 02 00 00 00 01 00 00 00 00 00 00 00 00
660 53 F0 70 A5 08 08 20 80 80 80 7F 7F 7F 66 6E 80
670 20 04 04 02 00 00 00 01 00 00 00 00 00 00 00 00
680 67 F0 A0 C0 10 08 60 80 80 80 7F 7F 7F 66 6E B8
690 28 04 04 02 00 00 00 01 00 00 00 00 00 00 00 00
Table 1-1
C-3
WHEN REPLACING EEPROM (MEMORY) IC
INIT +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E 0F
6A0 67 F0 A0 1B 10 08 60 80 80 80 7F 7F 7F 66 6E B8
6B0 28 04 04 02 00 00 00 01 00 00 00 00 00 00 00 00
6C0 6C 90 18 F0 07 14 44 80 80 80 7B 50 7A 6B 66 B5
6D0 30 0B 0F 02 00 00 00 01 00 00 00 00 00 00 00 00
6E0 35 90 18 70 07 14 35 80 80 80 80 80 80 6B 66 B5
6F0 30 0B 0F 02 00 00 00 01 00 00 00 00 00 00 00 00
700 67 10 A8 85 2B 05 B0 80 80 80 7F 80 80 6B 66 B5
710 20 0B 0F 02 00 00 00 01 00 00 00 00 00 00 00 00
720 89 80 A8 48 2B 03 94 80 80 80 7E 80 7E 6B 66 B5
730 30 0B 0F 02 00 00 00 01 00 00 00 00 00 00 00 00
740 6C 90 18 F0 07 14 44 80 80 80 7B 50 7A 6B 66 B5
750 30 0B 0F 02 00 00 00 01 00 00 00 00 00 00 00 00
760 35 90 18 70 07 14 44 80 80 80 80 80 7F 6B 66 B5
770 30 0B 0F 02 00 00 00 01 00 00 00 00 00 00 00 00
780 67 10 A8 85 2B 14 B0 80 80 80 80 80 80 6B 66 B5
790 20 0B 0F 02 00 00 00 01 00 00 00 00 00 00 00 00
7A0 89 80 A8 48 2B 66 94 80 80 80 7F 80 80 6B 66 B5
7B0 30 0B 0F 02 00 00 00 01 00 00 00 00 00 00 00 00
7C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
7D0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
7E0 E7 02 FF FF FF FF FF FF FF FF FF FF FF FF FF FF
7F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
Table 1-2
C-4
ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
•
Use an isolation transformer when performing any
service on this chassis.
•
Before removing the anode cap, discharge electricity
because it contains high voltage.
•
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
•
When you exchange IC and Transistor with a heat sink,
apply silicon grease on the contact section of the heat
sink. Before applying new silicon grease, remove all the
old silicon grease. (Old grease may cause damages to
the IC and Transistor).
Prepare the following measurement tools for electrical
adjustments.
1. Patterm Generator
On-Screen Display Adjustment
1.2.Set the VOLUME to minimum.
Press the VOL. DOWN button on the set and the
channel button (9) on the remote control for more than
2 seconds to display adjustment mode on the screen as
shown in Fig. 1-1.
TV
FILL
Function Step No.
3.
Use the Channel UP/DOWN button or Channel button
(0-9) on the remote control to select the options shown
in Fig. 1-2.
4.
Press the MENU button on the remote control to end
the adjustments.
5.
To display the adjustment screen for TV, AV, CS, HDMI and PC mode, press the INPUT button on the
remote control. Press the VOL.DOWN button on the set
and the channel (9) on the remote control for more than
2 seconds.
01 H POSI 340
Fig. 1-1
FUNCTION
NO.
H POSI OSD
01
V POSI OSD
02
R DRIVE(N)
03
R CUT OFF(N)
04
G DRIVE(N)
05
G CUT OFF(N)
06
B DRIVE(N)
07
B CUT OFF(N)
08
R DRIVE(C)
09
R CUT OFF(C)
10
G DRIVE(C)
11
G CUT OFF(C)
12
B DRIVE(C)
13
B CUT OFF(C)
14
R DRIVE(W)
15
R CUT OFF(W)
16
G DRIVE(W)
17
G CUT OFF(W)
18
B DRIVE(W)
19
B CUT OFF(W)
20
H POSI
21
V POSI
22
FUNCTION
NO.
BAK LIGHT CENT
23
BAK LIGHT MAX
24
BAK LIGHT MIN
25
BRIGHT CENT
26
BRIGHT MAX
27
BRIGHT MIN
28
TINT
29
SHARP CENTER
30
SHARP MAX
31
SHARP MIN
32
CONTRAST CENTER(N)
33
CONTRAST MAX(N)
34
CONTRAST MIN(N)
35
COLOR CENT
36
COLOR MAX
37
COLOR MIN
38
CONTRAST CENTER(C)
39
CONTRAST MAX(C)
40
CONTRAST MIN(C)
41
CONTRAST CENTER(W)
42
CONTRAST MAX(W)
43
CONTRAST MIN(W)
44
Fig. 1-2
2. BASIC ADJUSTMENTS
2-1: CONSTANT MAX
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (40) on the remote control to
select "CONTRAST MAX(C)".
Press the VOL. UP/DOWN button on the remote control
2.
until the contrast step No. becomes "135".
Receive a broadcast and check if the picture is normal.
3.
Press the INPUT button on the remote control to set to
4.
the AV mode. Then perform the above adjustments 1~3.
Press the INPUT button on the remote control to set to
5.
the CS mode.
Activate the adjustment mode display of Fig. 1-1 and
6.
press the channel button (40) on the remote control to
select "CONTRAST MAX(C)".
Press the VOL. UP/DOWN button on the remote control
7.
until the contrast step No. becomes "125".
Receive a broadcast and check if the picture is normal.
8.
Press the INPUT button on the remote control to set to
9.
the HD-MI mode. Then perform the above adjustments
6~8.
D-1
ELECTRICAL ADJUSTMENTS
2-2: WHITE BALANCE
Place the set in Aging Test for more than 15 minutes.
1.
Receive the gray scale pattern from the Pattern
2.
Generator.
Using the remote control, set the brightness and contrast
3.
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
4.
press the channel button (03) on the remote control to
select "R DRIVE(N)".
Press the CH. UP/DOWN button on the remote control to
5.
select the "R CUT OFF(N)", "G DRIVE(N)", "G CUT
OFF(N)", "R DRIVE(C)", "R CUT OFF(C)", "G DRIVE(C)",
"G CUT OFF(C)", "R DRIVE(W)", "R CUT OFF(W)", "G
DRIVE(W)" or "G CUT OFF(W)".
Adjust the VOL. UP/DOWN button on the remote control
6.
to whiten the R CUT OFF(N), G DRIVE(N), G CUT
OFF(N), R DRIVE(C), R CUT OFF(C)", G DRIVE(C), G
CUT OFF(C), R DRIVE(W), R CUT OFF(W) G DRIVE(W)
and G CUT OFF(W), B DRIVE(W) and B CUT OFF(W) at
each step tone sections equally.
Perform the above adjustments 5 and 6 until the white
7.
achieved.
D-2
2-3: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of each the adjustment items are set correctly referring below.
ELECTRICAL ADJUSTMENTS
NO. FUNCTION 480i 480p 720p 1080i 480i 480p 720p 1080i VGA VGA70 SVGA XGA WXGA WXGA44.7
TV AV
01 H POSI OSD 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340 340
02 V POSI OSD 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85 85
03 R DRIVE (N) 154 154 154 154 154 154 154 154 154 154 120 120 120 120 120 120
04 R CUTOFF (N) 107 107 107 107 107 107 107 107 107 107
05 G DRIVE (N) 124 124 124 124 124 124 124 124 124 124 120 120 120 120 120 120
06 G CUTOFF (N) 116 116 116 116 116 116 116 116 116 116
07 B DRIVE (N) 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120
08 B CUTOFF (N) 121 121 121 121 121 121 121 121 121 121
09 R DRIVE (C) 140 140 140 140 140 140 140 140 140 140
10 R CUTOFF (C) 122 122 122 122 122 122 122 122 122 122
11 G DRIVE (C) 128 128 128 128 128 128 128 128 128 128
12 G CUTOFF (C) 125 125 125 125 125 125 125 125 125 125
13 B DRIVE (C) 128 128 128 128 128 128 128 128 128 128
14 B CUTOFF (C) 128 128 128 128 128 128 128 128 128 128
15 R DRIVE (W) 161 161 161 161 161 161 161 161 161 161
16 R CUTOFF (W) 80 80 80 80 80 80 80 80 80 80
17 G DRIVE (W) 123 123 123 123 123 123 123 123 123 123
18 G CUTOFF (W) 92 92 92 92 92 92 92 92 92 92
19 B DRIVE (W) 108 108 103 108 108 108 103 108 108 108
20 B CUTOFF (W) 98 98 98 98 98 98 98 98 98 98
21 H POSI 300 300 300 146 338 295 294 144 294 245 143 159 215 291 313 322
22 V POSI 41 41 41 29 33 34 41 29 28 29 50 20 31 32 24 23
23 BAK LIGHT CENT 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128 128
24 BAK LIGHT MAX 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230 230
25 BAK LIGHT MIN 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
26 BRIGHT CENT 124 124 124 124 124 124 124 124 124 124 118 118 118 118 118 118
27 BRIGHT MAX 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150
28 BRIGHT MIN 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70 70
29 TINT 110 110 110 122 122 122 110 122 122 122
30 SHARP CENTER 105 105 105 105 105 105 105 105 105 105 128 128 128 128 128 128
31 SHARP MAX 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255
32 SHARP MIN 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
33 CONT CENTER (N) 95 80 90 85 85 85 95 85 85 85 128 128 128 128 128 128
34 CONT MAX (N) 120 120 105 105 105 105 150 105 105 105 150 150 150 150 150 150
35 CONT MIN (N) 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50
36 COLOR CENT 80 80 80 80 80 80 80 80 80 80
37 COLOR MAX 127 127 127 127 127 127 127 127 127 127
38COLOR MIN 00000000000000000000
39 CONT CENTER (C) 100 95 100 100 100 100 100 100 100 100
40 CONT MAX (C) 135 135 125 120 120 120 125 120 120 120
41 CONT MIN (C) 50 50 50 50 50 50 50 50 50 50
42 CONT CENTER (W) 70 65 65 65 65 65 65 65 65 65
43 CONT MAX (W) 100 100 90 90 90 90 90 90 90 90
44 CONT MIN (W) 50 50 50 50 50 50 50 50 50 50
PCHD-MICS
D-3 D-4
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