HP HP LC3260N User manual

HP LCD High-Definition Television
MODEL
HP LC3260N
In the interest of user safety (required by safety regulations in some countries/regions) the set should be restored to its
original condition and only parts identical to those specified should be used.
This document has been published to be used for after sales service only.
The contents are subject to change without notice.
Part number: 5991-4917
SERVICE MANUAL
Revision 031306

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.
3. USE THE DESIGNATED PARTS
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
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.
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
SERVICING
6.
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.
2.
3.
4.
Unplug the plug from the AC outlet.
Remove the antenna terminal on TV and turn
on the TV.
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].
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
A1-1
4. BE CAREFUL WITH THE
LCD PANEL
Avoid a shock to the panel while servicing.
Take enough care to deal with it.
When you exchange IC and Transistor with a heat sink, apply silicon grease (YG6260M) on the contact
section of the heat sink. Before applying new silicon grease, remove all the old silicon grease.
(Old grease may cause damage to the IC and Transistor).
IMPORTANT
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.
HOW TO ORDER PARTS

PCBs (manufactured) using lead free solder will have a PbF printing on the PCB.
(Please refer to figures.)
Caution:
Pb free solder has a higher melting point than standard solder;
Typically the melting point is 86°F~104°F(30°C~40°C) higher.
Please use a soldering iron with temperature control and adjust it to 650°F ±20°F (350°C ±10°C).
In case of using high temperature soldering iron, please be careful not to heat too long.
Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).
All products with the printed circuit board with PbF printing must be serviced with lead free solder.
When soldering or unsoldering, completely remove all of the solder from the pins or solder area,
and be sure to heat the soldering points with the lead free solder until it melts sufficiently.
Distinction of PbF PCB:
Recommendations
Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.
ABOUT LEAD FREE SOLDER (PbF)
•
•
•
A1-2

CONTENTS
SERVICING NOTICES ON CHECKING.....................................................................................
HOW TO ORDER PARTS ..........................................................................................................
IMPORTANT ...............................................................................................................................
ABOUT LEAD FREE SOLDER (PbF)........................................................................................
CONTENTS .................................................................................................................................
GENERAL SPECIFICATIONS ...................................................................................................
DISASSEMBLY INSTRUCTIONS
1. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ................................................
SERVICE MODE LIST ................................................................................................................
WHEN REPLACING EEPROM (MEMORY) IC ..........................................................................
RE-WRITE FOR DIGITAL SOFT FIRMWARE...........................................................................
ELECTRICAL ADJUSTMENTS..................................................................................................
TROUBLESHOOTING GUIDE ...................................................................................................
BLOCK DIAGRAM
SCALER/LVDS/MICON/ADC/JACK/AV SWITCH1/REGULATOR.........................................
AV SWITCH2/STEREO/SOUND AMP....................................................................................
TUNER/DIGITAL/POWER.......................................................................................................
INTERFACE.............................................................................................................................
MICON2 ...................................................................................................................................
PRINTED CIRCUIT BOARDS
AV ............................................................................................................................................
SCALER...................................................................................................................................
DIGITAL ...................................................................................................................................
POWER/REMOCON/OPERATION .........................................................................................
SCHEMATIC DIAGRAMS
AV SWITCH2 ...........................................................................................................................
AV JACK ..................................................................................................................................
TUNER/OUT JAC ....................................................................................................................
STEREO ..................................................................................................................................
SOUND AMP/HEADPHONE AMP ..........................................................................................
POWER ...................................................................................................................................
AV JACK2 ................................................................................................................................
TUNER.....................................................................................................................................
MICON .....................................................................................................................................
SCALER...................................................................................................................................
ADC1........................................................................................................................................
LVDS........................................................................................................................................
JACK ........................................................................................................................................
AV SWITCH1 ...........................................................................................................................
REGULATOR...........................................................................................................................
INTERFACE_HDMI IC ............................................................................................................
HDMI MICON2.........................................................................................................................
ASIC.........................................................................................................................................
SDRAM ....................................................................................................................................
FLASH .....................................................................................................................................
FRONT END ............................................................................................................................
AV OUT....................................................................................................................................
POWER2 .................................................................................................................................
POWER3 .................................................................................................................................
OPERATION/REMOCON........................................................................................................
INTERCONNECTION DIAGRAM ...............................................................................................
WAVEFORMS .............................................................................................................................
MECHANICAL EXPLODED VIEWS...........................................................................................
MECHANICAL REPLACEMENT PARTS LIST .........................................................................
ELECTRICAL REPLACEMENT PARTS LIST...........................................................................
A1-1
A1-1
A1-1
A1-2
A2-1
A3-1~A3-5
B-1, B-2
C-1
C-2
C-3
D-1~D-3
E-1~E-7
F-1, F-2
F-3, F-4
F-5, F-6
F-7, F-8
F-9, F-10
G-1~G-4
G-5~G-8
G-9, G-10
G-11~G-14
H-1, H-2
H-3, H-4
H-5, H-6
H-7, H-8
H-9, H-10
H-11, H-12
H-13, H-14
H-15, H-16
H-17, H-18
H-19, H-20
H-21, H-21
H-23, H-24
H-25, H-26
H-27, H-28
H-29, H-30
H-31, H-32
H-33, H-34
H-35, H-36
H-37, H-38
H-39, H-40
H-41, H-42
H-43, H-44
H-45, H-46
H-47, H-48
H-49, H-50
H-51, H-52
I-1~I-3
J-1, J-2
K1-1
K2-1
A2-1

GENERAL SPECIFICATIONS
G-1 TV LCD LCD Size / Visual Size 31.5 inch / 800.4mmV
System LCD Type Color TFT LCD
Number of Pixels 1366(H) x 768(V)
View Range Left/Right 85/85 degree
Up/Down 85/85 degree
Color System NTSC
Speaker 2 Speaker
Position Front
Size 2.2 x 5.0 inch
Impedance 4 ohm
Sound Output Max 10W + 10W
10%(Typical) ---
G-2 Tuning Broadcasting System Analog US System M
System Digital ATSC(8VSB)/QAM
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 Digital 44.00MHz
Frequency Analog Picture(FP) 45.75MHz
Sound(FS) 41.25MHz
FP-FS 4.50MHz
Preset CH No
Stereo/Dual TV Sound US-Stereo
Tuner Sound Muting Yes
G-3 Signal Video Signal Input Level 1 V p-p/75 ohm
Output Level --
S/N Ratio (Weighted) --
Horizontal Resolution at DVD Mode --
--
RGB Signal Output Level --
Audio Signal Input Level 0.85 V p-p/50k ohm
Output Level at DVD --
at TV 0.85 V p-p/1k ohm
0-1.70 V p-p/1k ohm (Variable out mode)
Digital Output Level 0.5 V p-p/75 ohm
S/N Ratio at DVD (Weighted) --
Harmonic Distortion --
Frequency Response : at DVD --
at Video CD --
at SVCD --
at CD --
G-4 Power Power Source AC 120V, 60Hz
DC --
Power Consumption at AC 170W 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
G-5 Regulation Safety UL/CSA
Radiation FCC/IC
Laser --
G-6 Temperature Operation 0oC ~ +40oC
Storage -20oC ~ +60oC
G-7 Operating Humidity Less than 80% RH
G-8 Clock and Clock Yes
Timer Sleep Timer Max Time 120 Min
Step 10 Min
On Timer Program No
Off Timer Program No
Game Timer No
Wake Up Timer No
Timer Back-up (at Power Off Mode) more than -- Min Sec
A3-1

GENERAL SPECIFICATIONS
G-9 Remote Unit RC-MS
Control Glow in Dark Remocon No
Remocon Format HP
Format RC-6
Custom Code HP 21bit
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 35 Keys
Keys POWER Yes
SAP/MTS Yes
Sound Yes
Picture Yes
Source Yes
Menu Yes
Left Yes
OK Yes
Right Yes
Up Yes
Down Yes
back Yes
Aspect Yes
Info Yes
VOL+ Yes
VOL- Yes
CH+ Yes
CH- Yes
Last Yes
Mute Yes
CC Yes
Sleep Yes
Ant Yes
1Yes
2Yes
3Yes
4Yes
5Yes
6Yes
7Yes
8Yes
9Yes
0Yes
_Yes
Enter Yes
A3-2

GENERAL SPECIFICATIONS
G-10 Features Auto Shut Off Yes
Auto Search No
Power On Memory No
Comb Filter Yes
3 -D
Game Position No
Auto Setup(Language/CH Program) No
Picture Setting(TV) Yes
AV Mode(Picture Preference) Yes
Brightness , Contrast , Color Yes
Tint Yes
Sharpness Yes
Color Temperature Yes
Cable Clear No
Picture Setting(PC) No
BRIGHTNESS , CONTRAST No
HOR POSITION , VER POSITION No
PHASE , CLOCK No
AUTO ADJUST No
RED , GREEN , BLUE No
Audio MTS Yes
Tone Control (Bass/Treble/Balance) Yes
Stable Sound No
Surround No
BBE No
SRS WOW (SRS 3D/Focus/Tru Bass) Yes
Valiable Audio Out Yes
Tuning CH Program Yes
Air/Cable Yes
ADD/DELETE Yes
Label CH Label Yes
Video Label Yes
Favorite CH No
V-Chip Yes
Type USA Type
RRT Setup Yes
Lock Hotel Lock No
Channel Lock No
Video Lock No
Panel Lock No
OSD Language
English
French
Closed Caption Yes
CC Advanced Yes
View Mode (Picture Size) Yes
Picture Scroll Yes
Cinema Mode Yes
Aspect Yes
Backlight Yes
PFC(Power Factor circuit) No
Freeze frame No
PIP/POP No
Direct Input Selection Yes
Digital Out Dolby Digital Yes
MPEG No
PCM Yes
DTS No
PC Monitor Input No
VGA (640x480) No
VGA (720x400) No
WVGA (848x480) No
SVGA (800x600) No
XGA (1024x768) No
WXGA (1280x768) No
WXGA (1280x720) No
WXGA (1360x768) No
SXGA (1280x1024) No
A3-3

GENERAL SPECIFICATIONS
HDMI Input Yes
×VGA
(
640 480
)
Yes (60Hz)
720X480i (4:3) Yes (60Hz)
720X480i (16:9) Yes (60Hz)
720X480p (4:3) Yes (60Hz)
720X480p (16:9) Yes (60Hz)
720X576i (4:3) No
720X576i (16:9) No
720X576p (4:3) No
720X576p (16:9) No
1280X720p Yes (60Hz)
1920X1080i Yes (60Hz)
Component Input Yes
720X480i (4:3) Yes (60Hz)
720X480i (16:9) Yes (60Hz)
720X480p (4:3) Yes (60Hz)
720X480p (16:9) Yes (60Hz)
720X576i (4:3) No
720X576i (16:9) No
720X576p (4:3) No
720X576p (16:9) No
1280X720p Yes (60Hz)
1920X1080i Yes (60Hz)
G-11 Accessories Owner's Manual Language English/French/Spanish
w/Guarantee Card Yes
Remote Control Unit Yes
Rod Antenna No
Poles --
Terminal --
Loop Antenna No
Terminal --
U/V Mixer No
DC Car Cord (Center+) No
Guarantee Card No
Warning Sheet No
Circuit Diagram No
Antenna Change Plug No
Service Facility List No
Important Safeguard No
Dew/AHC Caution Sheet No
Quick Set-up Sheet No
Battery Yes
UM size x pcs UM-4 x 2 pcs
OEM Brand No
AC Adapter No
AC Cord (for AC Adapter) No
AC Cord (Flat Polarity Plugs) Yes
Cable Cramp Yes
Stand Yes
Stand Screw Yes
Hexagon Wrench
Yes Start here" booklet Yes
Warranty and support guide Yes
Flyer Yes
AV Cord (2Pin-1Pin) No
Registration Card (NDL Card) No
300 to 75ohm Antenna Adapter No
A3-4

GENERAL SPECIFICATIONS
G-12 Interface Switch Top Power (Tact) Yes
Channel Up/Menu Up Yes
Channel Down/Menu Down Yes
Volume Up/Menu > Yes
Volume Down/Menu < Yes
Menu No
Play No
Eject No
Skip+, Search+ No
Skip-, Search- No
Still/Pause No
Stop No
Main Power SW No
Input Select Yes
Rear Main Power SW No
Indicator Power/Stand-By Yes (Green / Red)
On Timer No
Terminals Rear Video Input 1 RCA x 1
Audio Input 1 RCA x 2(L/MONO, R)
S - Input 1 Yes
Video Input 2 RCA x 1
Audio Input 2 RCA x 2(L/MONO, R)
S - Input 2 Yes
Video Output No
Audio Output RCA x 2 (Variable) (L, R)
Component Input 1 RCA x 3
Analog Audio RCA x 2(L/MONO, R)
Component Input 2 RCA x 3
Analog Audio RCA x 2(L/MONO, R)
HDMI Input 1 HDMI x 1
Analog Audio RCA x 2(L/MONO, R)
HDMI Input 2 HDMI x 1
Analog Audio No
Sub Woofer Out No
PC Monitor Input No
Analog Audio No
Digital Audio Output Coaxial
DC Jack (Center +) No
VHF/UHF Antenna Input F Type
AC Inlet Yes
Side Video Input 3 No
Audio Input 3 No
S - Input 3 No
Other Terminal No
G-13 Set Size Approx. W x D x H (mm) 823.0 x 279.5 x 669.0
w/o Handle, Stand Approx. W x D x H (mm) 823.0 x 116.5 x 592.0
G-14 Weight Net (Approx.) 19.5kg (43.0lbs)
Net w/o Handle, Stand (Approx.) 17.0kg (37.5lbs)
Gross (Approx.) 24.0kg (52.9lbs)
G-15 Carton Master Carton No
Content --- Sets
Material --- / ---
Dimensions W x D x H(mm) ---
Description of Origin ---
Gift Box Material Double/Brown
W/Color Photo Label No
W/Handle No
Dimensions W x D x H(mm) 917 x 318 x 716
Description of Origin Yes
Drop Test 1 Corner / 3 Edges / 6 Surfaces
Height (cm) 32(ORION SPEC:46)
Container Stuffing (40' container) 273 Sets/40' container
G-16 Material Cabinet Front PS 94V0 NON-DECABROM
Rear PS 94V0 NON-DECABROM
Jack Panel --
PCB Non-Halogen Demand No
Eyelet Demand Yes
G-17 Environment Environmental standard requirement Green procurement
Pb-free Phase3(Phase3A)
Measures for Whisker Yes
Rohs Yes
A3-5

B-1
Masking Tape
(Cotton Tape)
DISASSEMBLY INSTRUCTIONS
1.
REMOVAL
IC
Put Masking Tape (cotton tape) around the Flat Package
IC to protect other parts from any damage.
(Refer to Fig. 1-1.)
1.
Fig. 1-1
NOTE
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
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.
NOTE
Masking is carried out on all the parts located within
10 mm distance from IC leads.
Blower type IC
desoldering machine
IC
Heat the IC leads using a blower type IC desoldering
machine. (Refer to Fig. 1-2.)
2.
Fig. 1-2
NOTE
Do not rotate or move the IC back and forth , until IC
can move back and forth easily after desoldering the
leads completely.
When IC starts moving back and forth easily after
desoldering completely, pickup the corner of the IC using
tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 1-3.)
3.
Blower type IC
desoldering
machine
IC Fig. 1-3
Tweezers
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
Shield Wire. (Refer to Fig. 1-4.)
5.
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Braided Shield Wire
Soldering Iron
Fig. 1-4
IC pattern

B-2
DISASSEMBLY INSTRUCTIONS
Supply soldering
from upper position
to lower position
IC
Supply the solder from the upper position of IC leads
sliding to the lower position of the IC leads.
(Refer to Fig. 1-6.)
2.
Fig. 1-6
Soldering IronSolder
IC
Absorb the solder left on the lead using the Braided
Shield Wire. (Refer to Fig. 1-7.)
3.
Fig. 1-7
Soldering Iron
Braided Shield Wire
NOTE
Do not absorb the solder to excess.
IC
When bridge-soldering between terminals and/or the
soldering amount are not enough, resolder using a Thin-
tip Soldering Iron. (Refer to Fig. 1-8.)
4.
Fig. 1-8
Thin-tip Soldering Iron
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.
Finally, confirm the soldering status on four sides of the
IC 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.
5.
Solder temporarily
Soldering Iron
INSTALLATION
Take care of the polarity of new IC and then install the
new IC fitting on the printed circuit pattern. Then solder
each lead on the diagonal positions of IC temporarily.
(Refer to Fig. 1-5.)
1.
Fig. 1-5
Solder temporarily

C-1
SERVICE MODE LIST
This unit is 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 the standard time in the appropriate condition. (See below chart.)
Releasing of V-CHIP PASSWORD.
Initialization of factory TV data.
NOTE: If you set factory initialization, the memories are reset
such as the channel setting, and the POWER ON total
hours.
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
Set Key Operations
VOL. DOWN
(Minimum)
Remocon
Key
0 2 sec.
VOL. DOWN
(Minimum) 1 2 sec.
Standard
Time
VOL. DOWN
(Minimum) 6 2 sec.
VOL. DOWN
(Minimum) 9 2 sec.
Set
Condition
TV mode
TV mode
ALL mode
TV mode
Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display
Adjustment).
VOL. DOWN
(Minimum) 8
ALL mode Check of the SUM DATA, POWER ON total hours, MICON
VERSION and DIGITAL TV MICON FIRMWARE on the screen.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
2 sec.

C-2
CONFIRMATION OF CHECK SUM, POWER ON TOTAL HOURS, MICON VERSION AND
DIGITAL TV MICON FIRMWARE
Initial total of MEMORY IC, POWER ON total hours, MICON VERSION and Digital TV MICON Firmware can be checked on
the screen. Total hours are displayed in 16 system of notation.
NOTE:
1.
2.
3.
4.
INIT : C80F
ROM : 0000
ADC : 8F97
DVP1 : F8B4 *1
DVP2 : 32A1
LCD ON 0000
OEC7154A_036
DTV d-l62155
FIG. 1
Initial setting 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
Turn on the POWER, and set to the TV mode.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel
button (8) on the remote control for more than 2 seconds.
After the confirmation of each check sum, POWER ON
total hours, MICON VERSION and Digital TV MICON
Firmware, turn off the power.
*1 DVP1 is different according to each set.
Rom correction data check sum.
AD CONVERTER data check sum.
WHEN REPLACING EEPROM (MEMORY) IC
If you set a factory initialization, the total hours is reset to "0".
Please refer to "CONFIRMATION OF INITIAL DATA" when SUM DATA is not corresponding.
SCALER data check sum.
Digital TV MICON Firmware
4.
5.
6.
7.
8.
9.
10.
11.
12.
The unit will now have the correct DATA for the new MEMORY IC.
ADDRESS is now selected and should "blink". Using the UP/DOWN buton on the remote, step through the ADDRESS
until required ADDRESS to be changed is reached.
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.
Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.
Repeat steps 4 to 6 until all data has been checked.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
After the data input, set to the initializing of shipping.
Turn POWER on.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
After the finishing of the initializing of shipping, the unit will turn off automatically.
ADDRESS DATA
INIT 0000 B4
LCD ON 0000
OEC7154A_036
DTV d-l62155
FIG. 2
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 INITIAL SETTING TABLE (Attached "INITIAL DATA").
1.
2.
3.
Turn on the POWER, and set to the TV mode.
Set the VOLUME to minimum.
Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG 2.
CONFIRMATION OF INITIAL DATA

C-3
SET (REAR)
RE-WRITE FOR DIGITAL SOFT FIRMWARE
Ref. No. Part No. Parts Name Remarks
JG176
Up-Date of the Firmware
APJG176095JG176 USA HD DTV ROM
DISC
NOTE:
USA HD DTV ROM
DISC
The operating manual for Re-writing is included in USA HD DTV ROM DISC (JG176).
Prepare the following tools for Up-Date of the Firmware.
1 Computer of WINDOWS2000
2 USB Flash Memory (Use only SanDisk Cruzer Mini USB Flash Drive 256Mb)
USB CONNECTOR

ELECTRICAL ADJUSTMENTS
D-1
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
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. 2-1.
Fig. 2-1
3.
4.
5.
Use the UP/DOWN button or Channel button (0-9) on
the remote control to select the options shown in
Fig. 2-2.
Press the MENU button on the remote control to end
the adjustments.
To display the adjustment screen for AV, CS, HDMI
mode, press the INPUT button on the remote control to
set to the AV, CS, HDMI mode. Press the VOL.DOWN
button on the set and the channel (9) on the remote
control for more than 2 seconds.
FUNCTION
H POSI OSD
V POSI OSD
R DRIVE (N)
R CUTOFF (N)
G DRIVE (N)
G CUTOFF (N)
B DRIVE (N)
B CUTOFF (N)
R DRIVE (C)
R CUTOFF (C)
G DRIVE (C)
G CUTOFF (C)
B DRIVE (C)
B CUTOFF (C)
R DRIVE (W)
R CUTOFF (W)
G DRIVE (W)
G CUTOFF (W)
B DRIVE (W)
B CUTOFF (W)
NO.
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
•
•
•
Use an isolation transformer when performing any
service on this chassis.
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 (YG6260M) on the contact section of
the heat sink. Before applying new silicon grease,
remove all the old silicon grease. (Old grease may cause
damage to the IC and Transistor).
2. BASIC ADJUSTMENTS
NO.
22
24
25
26
27
28
29
30
31
35
36
37
38
39
40
63
64
65
66
67
FUNCTION
H POSI 60Hz
V POSI 60Hz
BAK LIGHT CENT
BAK LIGHT MAX
BAK LIGHT MIN
BRIGHT CENT
BRIGHT MAX
BRIGHT MIN
TINT
CONTRAST CENTER
CONTRAST MAX
CONTRAST MIN
COLOR CENT
COLOR MAX
COLOR MIN
CONTRAST 40
BRIGHT (3F54)
CONTRASR (3F54)
SRC TOP
DFEA VIMGVT
Prepare the following measurement tools for electrical
adjustments.
1. Pattern Generator
Fig. 2-2
2-1: WHITE BALANCE
1.
2.
3.
4.
5.
6.
7.
8.
Place the set in Aging Test for more than 15 minutes.
Receive the gray scale pattern from the Pattern
Generator.
Press the INPUT button on the remote control to set to
the AV mode.
Using the remote control, set the brightness and contrast
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select “R DRIVE (N)”.
Press the UP/DOWN button on the remote control to
select the “R CUTOFF (N)”, “B DRIVE (N)”, “B CUTOFF
(N)”, “R DRIVE (C)”, “R CUTOFF (C)”, “B DRIVE (C)”, “B
CUTOFF (C)”, “R DRIVE (W)”, “R CUTOFF (W)”, “B
DRIVE (W)” and “B CUTOFF (W)”.
Adjust the RIGHT/LEFT button on the remote control to
whiten the R CUTOFF (N), B DRIVE (N), B CUTOFF (N),
R DRIVE (C), R CUTOFF (C), B DRIVE (C), B CUTOFF
(C), R DRIVE (W), R CUTOFF (W), B DRIVE (W) and B
CUTOFF (W) at each step tone sections equally.
Perform the above adjustments 5 and 6 until the white
color is looked like a white.
TV
01 H POSI OSD
AUTO
346

2-2: Confirmation of Fixed Value (Step No.)
Please check if the fixed values of each of the adjustment items are set correctly referring below. (TV/AV/CS/HD-MI)
TV TV 720p AV AV (S) 480i 480p 720p 1080i 480i 480p 720p 1080i VGA
NO. FUNCTION Step No. Step No. Step No. Step No. Step No. Step No. Step No. Step No. Step No. Step No. Step No. Step No. Step No.
1 H POSI OSD 346 346 346 346 346 346 346 346 346 346 346 346 346
2 V POSI OSD 85 85 85 85 85 85 85 85 85 85 85 85 85
5 G DRIVE (N) 128 128 128 128 128 128 128 128 128 128 128 128 128
6 G CUTOFF (N) 128 128 128 128 128 128 128 128 128 128 128 128 128
11 G DRIVE (C) 128 128 128 128 128 128 128 128 128 128 128 128 128
12 G CUTOFF (C) 128 128 128 128 128 128 128 128 128 128 128 128 128
17 G DRIVE (W) 128 128 128 128 128 128 128 128 128 128 128 128 128
18 G CUTOFF (W) 128 128 128 128 128 128 128 128 128 128 128 128 128
22 H POSI 60Hz 284 326 284 284 284 138 328 132 272 138 290 238 158
24 V POSI 60Hz 34 59 34 34 34 34 56 42 36 35 62 42 35
25 BAK LIGHT CENT 128 128 128 128 128 128 128 128 128 128 128 128 128
26 BAK LIGHT MAX 255 255 255 255 255 255 255 255 255 255 255 255 255
27 BAK LIGHT MIN 00 00 00 00 00 00 00 00 00 00 00 00 00
28 BRIGHT CENT 126 126 126 126 126 126 126 126 126 126 126 126 126
29 BRIGHT MAX 156 156 156 156 156 156 156 156 156 156 156 156 156
30 BRIGHT MIN 70 70 70 70 70 70 70 70 70 70 70 70 70
31 TINT 128 128 114 120 128 128 128 128 132 132 132 132 132
35 CONTRAST CENTER --- --- --- --- --- --- --- --- 119 119 119 116 119
36 CONTRAST MAX --- --- --- --- --- --- --- --- 164 164 164 164 164
37 CONTRAST MIN --- --- --- --- --- --- --- --- 50 50 50 50 50
38 COLOR CENT 70 110 88 80 83 104 440 440 73 73 73 73 73
39 COLOR MAX 127 127 127 127 127 127 127 127 127 127 127 127 127
40 COLOR MIN 00 00 00 00 00 00 00 00 00 00 00 00 00
63 CONTRAST 40 --- --- --- --- --- --- --- --- 156 156 156 156 156
64 BRIGHT (3F54) 121 128 123 122 122 128 128 128 118 117 118 118 113
65 CONTRAST (3F54) --- --- --- --- --- 170 170 170 113 113 113 113 118
66 SRC TOP 21 21 21 21 21 21 21 21 21 21 21 21 21
67 SRC TOP 21 28 21 21 21 45 29 27 21 44 28 28 43
HD-MI
ELECTRICAL ADJUSTMENTS
CS
D-2

J4211 J4204
TU5801
CP4203
CP4202
CP3804 CP3802
CP3803
CP3801
CP3807
CP301
CP303
J4201
J4202
J4205 CP901
CP5802
CP5801
CP3808
ELECTRICAL ADJUSTMENTS
3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)
CP508
CP512
CP506
CP507
CP510
CP511
J502
CP2201 OS2200
CP2404
CP2403
CP2203
CP802
CP3201CP2200
CP3603
CP3601
CP3602
CP803
CP7203
J4301
CD4204
CP4204
CD4203
DIGITAL PCB
LCD PANEL
REMOCON PCB
SPEAKER
AV PCB
POWER PCB
SCALER PCB
OPERATION PCB
AC IN
SPEAKER
D-3

TROUBLESHOOTING GUIDE
E-1
POWER DOES NOT TURN ON
NO
IS F501 BROKEN ? YES CHANGE F501.
NO
YES
CHECK IC503 AND
PERIPHERAL CIRCUIT.
NO CHECK IC3804 AND
PERIPHERAL CIRCUIT.
OR CHANGE AV PCB.
NO
YES
CHECK IC506 AND
PERIPHERAL CIRCUIT.
OR CHANGE POWER PCB.
YES
CHANGE SCALER PCB.
IS THERE VOLTAGE
AT PIN 2 OF IC3804
AT3.3V ?
IS THERE VOLTAGE
AT PIN 4 OF IC506
AT5V ?
IS THERE VOLTAGE
AT PIN 4 OF IC503
20.5V ?

TROUBLESHOOTING GUIDE
E-2
THE PICTURE DOES NOT
APPEAR (1).
NO
YES
CONNECT CD7204.
NO
YES
IS CD7204 CONNECTED ?
DOSE BACK LIGHT SHINE ?
YES
NO
CHANGE V2301.
IS THERE SIGNAL
AT IC7201 ? CHANGE IC7201.
IS THERE SIGNAL
AT CP7203 ?
NO
YES
CHECK IC801.
OR CHANGE SCALER PCB.
CHECK IC502, T502 AND
PERIPHERAL CIRCUIT.
NO
YES
IS THERE VOLTAGE AT
PINS 1, 2, 3, 4 AND 5
OF CP505 24V ?

TROUBLESHOOTING GUIDE
E-3
THE PICTURE DOES NOT
APPEAR (2).
YES
NO CHECK IC4201 AND
PERIPHERAL CIRCUIT.
CONNECT CD4203.
CHECK IC4201 AND
PERIPHERAL CIRCUIT.
NO
YES
CHECK IC801 AND
PERIPHERAL CIRCUIT.
IS CD4203 CONNECTED
AND IS THERE SIGNAL ?
IS THERE SIGNAL
AT IC4201 ?