Sharp Aquos LC 37HV6U User manual

LC-37HV6U
SERVICE MANUAL
LCD COLORTELEVISION
MODEL LC-37HV6U
In the interests of user-safety (Required by safety regulations in some countries) the set should be re-
stored to its original condition and only parts identical to those specified should be used.
CONTENTS
Page
»IMPORTANT SERVICE SAFETY PRECAUTION .....2
»SPECIFICATIONS................................................5
»OPERATION MANUAL ........................................6
»DIMENSIONS ....................................................13
»REMOVING OF MAJOR PARTS........................15
» ADJUSTMENT PROCEDURES (AVC System).. 22
»UPGRADING INSTALLED PROGRAMS ...........34
»ADJUSTMENT PROCEDURES (Display) .........37
»TROUBLE SHOOTING TABLE ..........................43
»MAJOR IC INFORMATIONS (AVC System) ......54
»MAJOR IC INFORMATIONS (Display)...............76
»CHASSIS LAYOUT/
OVERALL WIRING DIAGRAM...........................84
Page
»SYSTEM BLOCK DIAGRAM (AVC System)......92
»SIGNAL FLOW BLOCK DIAGRAM
(AVC System).....................................................94
»POWER SYSTEM BLOCK DIAGRAM
(AVC System).....................................................96
»PC I/F BLOCK DIAGRAM (AVC System) ..........98
»SIGNAL BLOCK DIAGRAM (Display) ..............100
»DESCRIPTION OF SCHEMATIC DIAGRAM ...102
»SCHEMATIC DIAGRAM...................................103
»PRINTED WIRING BOARD ASSEMBLIES......178
»PARTS LIST .....................................................219
»PACKING OFTHE SET ...................................263
SHARP CORPORATION This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
SY3M1LC37HV6U

2
LC-37HV6U
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SAFETY NOTICE
Many electrical and mechanical parts in LCD color
television have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarily increased by using replacement components
rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by " å"
and shaded areas in the Replacement Parts List and
Schematic Diagrams.
For continued protection, replacement parts must be
identical to those used in the original circuit.
The use of a substitute replacement parts which do not
have the same safety characteristics as the factory
recommended replacement parts shown in this service
manual, may create shock, fire or other hazards.
CAUTION: FOR CONTINUED
PROTECTION AGAINST A RISK OF
FIRE REPLACE ONLY WITH SAME
TYPE FUSE.
AVC SIDE: F701 (2A, 250V)
LCD SIDE: F7501, F7502, F7503,
F7504, F7551, F7552, F7553, F7611,
F7612, F7613, F7614, F7641, F7642,
F7643 (800mA, 250V), F2701, F2702
(4A, 250V)
WARNING
1. For continued safety, no modification of any circuit
should be attempted.
2. Disconnect AC power before servicing.
BEFORE RETURNINGTHE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks:
1. Inspect all lead dress to make certain that leads are
not pinched, and check that hardware is not lodged
between the chassis and other metal parts in the
receiver.
2. Inspect all protective devices such as non-metallic
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacitor networks, mechanical
insulators, etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
»Plug the AC cord directly into a 110~240 volt AC outlet.
»Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series
with all exposed metal cabinet parts and a known
earth ground, such as electrical conduit or electrical
ground connected to an earth ground.
»Use an AC voltmeter having with 5000 ohm per volt,
or higher, sensitivity or measure the AC voltage drop
across the resistor.
»Connect the resistor connection to all exposed metal
parts having a return to the chassis (antenna, metal
cabinet, screw heads, knobs and control shafts,
escutcheon, etc.) and measure the AC voltage drop
across the resistor.
All checks must be repeated with the AC cord plug
connection reversed. (If necessary, a nonpolarized
adaptor plug must be used only for the purpose of
completing these checks.)
Any reading of 0.75 Vrms (this corresponds to 0.5
mA rms AC.) or more is excessive and indicates a
potential shock hazard which must be corrected
before returning the monitor to the owner.
TO EXPOSED
METAL PARTS CONNECT TO
KNOWN EARTH
GROUND
IMPORTANT SERVICE SAFETY PRECAUTION
ËService work should be performed only by qualified service technicians who are thor-
oughly familiar with all safety checks and the servicing guidelines which follow:
DVM
AC SCALE
1.5k ohm
10W
0.15 µF
TEST PROBE
A V

3
LC-37HV6U
PRECAUTION: POUR LA
PROTECTION CONTINUE CONTRE
LES RISQUES D'INCENDIE,
REMPLACER LE FUSIBLE
CÔTÉ AVC:F701 (2A, 250V)
CÔTÉ LCD:F7501, F7502, F7503,
F7504, F7551, F7552, F7553, F7611,
F7612, F7613, F7614, F7641, F7642,
F7643 (800mA, 250V), F2701, F2702
(4A, 250V)
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AVIS POUR LA SECURITE
De nombreuses pièces, électriques et mécaniques, dans
les téléviseur ACL présentent des caractéristiques
spéciales relatives à la sécurité, qui ne sont souvent
pas évidentes à vue. Le degré de protection ne peut
pas être nécessairement augmentée en utilisant des
pièces de remplacement étalonnées pour haute tension,
puissance, etc.
Les pièces de remplacement qui présentent ces
caractéristiques sont identifiées dans ce manuel; les
pièces électriques qui présentent ces particularités sont
PRECAUTIONS A PRENDRE LORS DE LA REPARATION
ËNe peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement
accoutumé à toute vérification de sécurité et aux conseils suivants.
identifiées par la marque " å" et hachurées dans la
liste des pièces de remplacement et les diagrammes
schématiques.
Pour assurer la protection, ces pièces doivent être
identiques à celles utilisées dans le circuit d'origine.
L'utilisation de pièces qui n'ont pas les mêmes
caractéristiques que les pièces recommandées par
l'usine, indiquées dans ce manuel, peut provoquer des
électrocutions, incendies, radiations X ou autres
accidents.
AVERTISSEMENT
1. N'entreprendre aucune modification de tout circuit.
C'est dangereux.
2. Débrancher le récepteur avant toute réparation.
VERIFICATIONS CONTRE L'INCEN-DIE ET
LE CHOC ELECTRIQUE
Avant de rendre le récepteur à l'utilisateur, effectuer
les vérifications suivantes.
1. Inspecter tous les faisceaux de câbles pour s'assurer
que les fils ne soient pas pincés ou qu'un outil ne soit
pas placé entre le châssis et les autres pièces
métalliques du récepteur.
2. Inspecter tous les dispositifs de protection comme les
boutons de commande non-métalliques, les isolants,
ledos ducoffret, lescouverclesoublindagesde réglage
et de compartiment, les réseaux de résistance-
capacité, les isolateurs mécaniques, etc.
3. S'assurer qu'il n'y ait pas de danger d'électrocution en
vérifiant la fuite de courant, de la facon suivante:
•Brancher le cordon d'alimentation directem-ent à une
prise de courant de 110-240V. (Ne pas utiliser de
transformateur d'isolation pour cet essai).
•A l'aide de deux fils à pinces, brancher une résistance
de 1.5 kΩ10 watts en parallèle avec un condensateur
de 0,15µF en série avec toutes les pièces métalliques
exposées du coffret et une terre connue comme une
conduite électrique ou une prise de terre branchée à
la terre.
•Utiliser un voltmètre CA d'une sensibilité d'au moins
5000Ω/V pour mesurer la chute de tension en travers
de la résistance.
•Toucher avec la sonde d'essai les pièces métalliques
exposées qui présentent une voie de retour au châssis
(antenne, coffret métallique, tête des vis, arbres de
commande et des boutons, écusson, etc.) et mesurer
la chute de tension CA en-travers de la résistance.
Toutes les vérifications doivent être refaites après avoir
inversélafichedu cordond'alimentation.(Sinécessaire,
une prise d'adpatation non polarisée peut être utilisée
dans le but de terminer ces vérifications.)
Tous les courants mesurés ne doivent pas dépasser
0,5 mA.
Dans le cas contraire, il y a une possibilité de choc
électrique qui doit être supprimée avant de rendre le
récepteur au client.
DVM
ECHELLE CA
1.5k ohm
10W
0.15 µF
SONDE D'ESSAI
AUX PIECES
METALLIQUES
EXPOSEES
BRANCHER A UNE
TERRE CONNUE
A V

4
LC-37HV6U
Precautions for using lead-free solder
1 Employing lead-free solder
"PWBs" of this model employs lead-free solder.The LF symbol indicates lead-free solder, and is attached on the
PWBs and service manuals.The alphabetical character following LF shows the type of lead-free solder.
Example:
2 Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit,
contact our service station or service branch in your area.
3 Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead
solder by 40°C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the
PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance
temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering
condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded.Make sure to turn on
and off the power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after
every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.
Indicates lead-free solder of tin, silver and copper.
Lead-free wire solder for servicing
Part No, ★Description Code
ZHNDAi123250E J φ0.3mm 250g(1roll) BL
ZHNDAi126500E J φ0.6mm 500g(1roll) BK
ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM
LFa

5
LC-37HV6U
SPECIFICATIONS
Item 37" LIQUID CRYSTALTELEVISION, Model: LC-37HV6U
TV
Function American TV Standard NTSC System
VHF/UHF VHF 2-13ch, UHF 14-69ch
CATV 1-125ch
Audio multiplex BTSC System
Terminals S-VIDEO in, AV in, COMPONENT in
INPUT 2 S-VIDEO in, AV in
INPUT 3 S-VIDEO in, AV in, COMPONENT in, DVI-HDTV in
ANTENNA 75 ΩUnbalance, F Type for VHF/UHF/CATV in
INPUT 4 S-VIDEO, AV in
PC 15 Pin mini D-Sub, Audio in (Ø 3.5mm jack)
OSD language English/French/Spanish
Power Requirement AC 110-240 V, 50/60 Hz
Power
Consumption 42W (0.4W Standby with AC 120 V)
Weight 12.1lbs./5.5 kg (without stand), 12.3 lbs./5.6 kg (with stand)
Accessories Operation manual (×1), Remote control unit (×1), System cable (×1), AC cord
(×2), "AA" size battery (×2), AVC sytem stand unit (×1), Cable clamp (Large
×1, Small ×1), RF cable (×1), Registration card (×1)
TV-standard (CCIR)
Receiving
Channel
Rear INPUT 1
Front
LCD panel 37" Advanced Super View & BLACK TFT LCD
Number of dots 3,147,264 dots (1366 ×768 ×3dots)
Brightness 430 cd/m2
Backlight 60,000 hours (at Manual Standard position)
Viewing angles H : 170°V : 170°
Audio amplifier 10W ×2
Speakers Ø 8cm 2pcs, Ø 2.5cm 2pcs
AVC
System
Monitor Out Audio (Variable, Fixed), S-VIDEO out, AV out
Headphones Ø 3.5mm jack
AVC System
Display
AVC System
Display
142W (0.3W Standby with AC 120 V)
37.3lbs./16.9kg (Display only), 36.6lbs./16.6kg (with Display and speaker),
55.1lbs./25kg (with Display, speaker and stand)
DC OUTPUT DC 6.5V 7W MAX
4Ω10W (L/R)
EXT.
SPEAKER
Specifications are subject to change without prior notice.

6
LC-37HV6U
OPERATION MANUAL
Part names
OPC indicator*
POWER indicator
MAIN POWER
button
OPC sensor
Display
POWER button
INPUT
button
VOLUME buttons
(VOL /)
CHANNEL buttons
(CH /)
Remote control sensor
*OPC: Optical Picture Control
Front view
CLEAR*
MAIN POWER button INPUT 4 terminal (S-VIDEO)
INPUT 4 terminal (VIDEO)
PC INPUT terminal (AUDIO)
INPUT 4 terminals (AUDIO L/R)
PC INPUT terminal (ANALOG RGB)
AVC System
Rear view
INPUT 1 COMPONENT
video terminals (Y, P
B
, P
R
)
INPUT 3 COMPONENT
video terminals (Y, P
B
, P
R
)
MONITOR OUTPUT terminal
(S-VIDEO)
DISPLAY OUTPUT 1 terminal
DISPLAY
OUTPUT 2
terminal
AC INPUT
terminal
RS-232C
terminal
MONITOR OUTPUT terminals (AUDIO L/R)
Antenna (A) input terminal
Antenna (B)
input terminal
Antenna (A) output
terminal
DVI-HDTV
INPUT
terminal
INPUT 3 terminal (S-VIDEO)
INPUT 3 terminal (VIDEO)
INPUT 3 terminals (AUDIO L/R)
INPUT 1 terminal (S-VIDEO)
INPUT 1 terminal
(VIDEO)
INPUT 1 terminals
(AUDIO L/R)
INPUT 2 terminal (S-VIDEO)
INPUT 2 terminal (VIDEO)
INPUT 2 terminals
(AUDIO L/R)
How to open the door.
STANDBY/ON indicator
*If the AVC System is switched on but it does not appear to be operating correctly, it may need resetting. In this
case, press CLEAR, shown in the diagram, lightly with the end of a ballpoint pen or other pointed object.
This will reset the System as shown below.
•AV MODE resets to USER
•TV channel returns to initial channel setting (Air:2ch, Cable:1 or 2ch)
•Twin picture resets to normal
•Audio setting initializes
•Dolby virtual resets to Off
•Image position initializes
NOTE
•Pressing CLEAR will not work if the System is in standby mode (indicator lights red).
•Pressing CLEAR will not delete channel preset or secret number. See page 61 for clearing the secret number when you
know it. See page for initializing to the factory preset values when you forget your secret number.
Headphone
(When connecting headphones, the sound from the
speakers is muted.)
DC OUTPUT terminal
(Terminal for expanded functionality in
the near future.)
MONITOR OUTPUT
terminal (VIDEO)
DISPLAY OUTPUT 3 terminal
EXTERNAL SPEAKER terminals

7
LC-37HV6U
Part names
Remote control unit
NOTE
•When using the remote control unit, point it at the Liquid
Crystal Television.
•See pages for operating buttons not listed on this page.
TV
ANT-A/B
INPUT
Virtual
TWIN
MODE
AV
POWER
MTS CC
PICTURE
SELECT
SUB TWIN CH
+
—
FREEZE
MODE
VOL CH
MUTE
MENU TV/SAT/DVD
FAVORITE CH
RECEIVER
DTV/DVD TOP
SOURCE DTV/SAT
DTV/SAT
VCR REC
ABCD
RETURN
MENU
POWER
SET/
ENTER
MENU
GUIDE
INPUT VOL—VOL+
INFO
VIEW
SLEEP LEARN
EDIT/
ENT
FLASHBACK
DISPLAY
INPUT
TV VCRCBL
/SAT /DTV
DVD /LD
123
456
789
100
0
POWER
16
17
18
19
20
21
22
24 25
23
3
2
1
4
5
6
7
8
9
10
11
12 13 14
15
1TVPOWER:Switch the Liquid Crystal Television power
on or off.
2Virtual*: Select the Dolby virtual settings.
3 AV MODE: Select an audio or video setting.(AV mode:
DYNAMIC (Fixed), DYNAMIC,STANDARD, MOVIE,
GAME, USER. PC mode: STANDARD, USER.)
4 VIEW MODE: Select the screen size.
5DISPLAY:Display the channel information.
6SLEEP:Set the sleep timer.
7 FLASHBACK: Return to the previous channel or input
external mode.
8 VOL +/–:Set the volume.
9 MENU: Display the menu screen.
10 MENU RETURN: Return to the previous menu screen.
11 ///:Select a desired item on the screen.
12 ANT-A/B: Select between ANT-A and B to watch
broadcasts via the two tuners.
13 INPUT: Select a Liquid Crystal Television input source.
(TV, INPUT 1, INPUT 2, INPUT 3, INPUT 4, PC)
14 :Whenpressed all buttonson the remotecontrolunit
will light. The lighting will turn off if no operations are
performed within about 5 seconds. This button is used
for performing operations in dark places.
15 MTS: Select the MTS/SAP.
16 CC: Display captions during closed-caption source.
17 TWIN CH buttons
TWIN PICTURE: Set the twin picture mode.
Press again to return to normal screen.
FREEZE: Set the still image. Press again to return to
normal screen.
SELECT: Select the active screen.
SUB INPUT: Select an input source of sub screen.
TWIN CH /:Select the channel of sub screen.
18 0–9: Set the channel.
19 100 ENT: Select the three digit mode. Execute a
command of the channel.
20 CH /:Select the channel.
21 MUTE: Mute the sound.
22 SET/ENTER: Execute a command.
23 FAVORITE CH
A,B,C,D: Select four preset favorite channels in four
different categories.
When viewing via ANT-A: up to 16 channels can be
assigned in A, B, C and D.
When viewing via ANT-B: up to 16 channels can be
assigned in A, B, C and D.
With ANT-A and B combined, you can preset up to 32
favorite channels in advance.
While watching, you can toggle the selected channels
by pressing A, B, C and D.
24 LED for transmission confirmation
25 Mode switch
*VIRTUAL DOLBY SURROUND
Manufactured under license from Dolby
Laboratories."Dolby","Pro Logic" and the double-
D symbol are trademarks of Dolby Laboratories.
Preparation
Removing the stand and speaker
This unit has detachable type speaker.
You can detach the system speaker when using external amplifier/speaker.
Before detaching (or attaching) speaker, unplug the AC cord from the AC outlet and the system cable from the
Display.
CAUTION
•When using the TV with the supplied stand attached, do not remove the speaker.Doing so may disturb
the balance leading to product damage or personal injury.
Before attaching/detaching speaker
•Before performing work make sure to turn off the System.
•Before performing work spread cushioning over the base area to lay the Display on. This will prevent it from
being damaged.
CAUTION
•The speaker terminals on the Display are only for the attached speaker. Do not connect any third party plug or speaker
to the terminal.
•Insert the speaker plug completely into the terminal.
NOTE
•To attach the speaker, perform the above steps in reverse order.
2
34
Unfasten the screws used to secure the speaker in
place.
Take hold of the speaker and slowly slide it
sideways.
(The speaker plugs are still inserted, so make
sure not to pull the speaker too far.)
Remove the speaker plugs from the terminal on the
Display.
(Do not remove the plugs by pulling the cord.)
Nowthe speakercan bedetachedfromthe Display.
Speaker plug
1
Unfasten the screws used to secure the stand
in place, and then detach the stand from the
Display.
(Hold the stand so it will not drop the stand from
the edge of the base area.)

8
LC-37HV6U
Setting the System in place
Handling the Display
CAUTION
•The Display is very heavy. Move it with two or more people.
•Do not remove the stand from the Display unless using an
optional bracket to mount it.
•Keep enough space above and behind the Display.
Handling the AVC System
CAUTION
•Do not put a VCR or other device on the AVC System.
•Keep enough space above and on the sides of the AVC System.
•Do not block the ventilation openings on the top and left side,
and the exhaust fan on the right side.
•Do not spread a thick cloth beneath the AVC System, or cover it
with one, as this can cause overheating and result in
malfunction.
Where to place the System
"System" means the Display and AVC System. First select the location where to place the System.
Selecting the location of the System
•Select a place with no direct sunlight and good ventilation.
•The Display and the AVC System are connected by the system cable.
Keep enough space
System cable
AVC System
Display
There is an
exhaust fan on
the right side.
1
2
4 inches
(10 cm)
or more
2 inches
(5 cm) or more
2 inches
(5 cm) or
more
Preparation
If you want to keep a longer distance between the Display and AVC
System, please purchase the optional system cable AN-07SC1
(about 23 feet/7 meters).
IMPORTANT
•You cannot use external speakers when you are using the optional system
cable (AN-07SC1).
2 inches
(5 cm) or
more
CAUTION
Adjust the screen with both
hands. Put one hand on the
Display and tilt the screen
while steadying the stand
with your other hand.
You can adjust the screen
vertically up to 4 degrees
forward or 6 degrees back-
ward, or rotate 10 degrees
horizontally.
System cable
AVC System (rear view)
AC cord
Display (rear view)
Setting the System
After putting the Display and the AVC System in place, connect the system cables and AC cords. Use the
cable clamps for bundling the cables.
Connecting the system cable and the AC cord to the Display
1
2
3
Removing the terminal cover
Connecting the system cable and the AC cord to the AVC System
CAUTION
•TO PREVENT RISK OF ELECTRIC SHOCK, DO NOT TOUCH UN-INSULATED PARTS OF ANY CABLES WITH THE
AC CORD CONNECTED.
Press down the two
upper hooks to remove
the cover toward you.
Press the two hooks
toward the center of the
Display and remove the
cover toward you.
AC cord
(GLAY)
Connect the plug firmly until the
hooks on both sides click.
(WHITE)
Connect the plug into the terminal
and secure it by tightening the
thumb screws.
(BLACK)
(BLACK) (WHITE) (GLAY)
You cannot use external
speakers when you are using
the optional system cable
(AN-07SC1).
IMPORTANT
System cable

9
LC-37HV6U
Preparation
4
5
Attaching the clamps and bundling the cables with the clamp
Closing the terminal cover
Cable clamp (Large)
Insert the cable
clamp in the hole
on the Display leg
as shown.
Cable clamp (Small)
Peel off the seal
on the back and
attach as shown.
Display (rear view)
Cables come
out from the
small opening.
Setting the Display on the wall
CAUTION
•InstallingtheLiquidCrystalTelevisionrequiresspecialskillthatshouldonlybeperformedbyqualifiedservicepersonnel.
Customers should not attempt to do the work themselves. SHARP bears no responsibility for improper mounting or
mounting that results in accident or injury.
Using an optional bracket to mount the Display
•You can ask a qualified service personnel about using an optional AN-37AG1 bracket to mount the Display
to the wall.
•Carefully read the instructions that come with the bracket before beginning work.
Vertical mounting Angular mounting
Hanging on the wall
AN-37AG1 wall mount bracket. (See the bracket instructions for details.)
Setting the AVC System with the stand
1
How to install the AVC System vertically using the stand unit.
•Use the supplied stand unit for installing the AVC System vertically in an upright position.
Stick each spacer to the
stand as shown.
Peel each spacer
away from the
paper and attach
to the four bulging
areas on the stand.
2
Attach each cushion to
the stand as shown.
3
Fit the stand to the AVC
System.
Peel each cushion
away from the
paper and attach
to the four areas at
the bottom.
Insert the stand into the AVC
System, making sure that the
thick and thin bulges of the
stand align with the big and
small holes on the AVC
System.
Stand
spacer
Bulge Stand cushion
Thin bulge
Thick
bulge
Big hole
Small
hole
4
Attach the stand using the
stand screws as shown.
Stand screw
The AVC System installed
vertically with the stand.
NOTE
•When mounting the AVC System vertically, always use the supplied stand. Be careful not to block vent holes when
standing up directly on the floor or a flat surface as this can result in equipment failure.
Attaching point
Attaching point
Bulge
5°
About setting the Display angle •You can set the Display on the
wall up to 5 degrees forward
when the speaker is attached and
up to 20 degrees forward when
the speaker is not attached. Do
not set the angle outside those
ranges.

10
LC-37HV6U
Using external equipment
Digital TV tuner
AVC System
(rear view)
AVC System
(front view)
AV Receiver
(Built-in Tuner Amp)VCR
DVD player
Game console/
Camcorder
PC
You can connect many types of external equipment to your System, like a DVD player, VCR, Digital TV tuner, PC,
game console and camcorder. To view external source images, select the input source from INPUT on the
remote control unit or on the Display.
CAUTION
•To protect all equipment, always turn off the AVC System before connecting to a DVD player, VCR, Digital TV tuner,
PC, game console, camcorder or other external equipment.
NOTE
•Please refer to the relevant operation manual (DVD player, PC, etc.) carefully before making connections.
S-VIDEO
S-VIDEO S-VIDEO
AV S-VIDEO AV
AV
AV
Y/P
B
/P
R
Y/P
B
/P
R
PC-AUDIO
ANALOG RGB
AV
S-VIDEO
DVI
Rear view
Useful adjustment settings
Connecting external speakers
When using external speakers
•Change the speaker setting to external speakers.
Make sure to connect the speaker terminal and
cable polarity (
+
, –) properly
•The speaker terminals have plus (
+
) and minus (
–
)
polarity.
•Plus is red and minus is black.
•The cables are also divided into plus and minus.
•When connecting the left/right speakers, be sure to
connect the plus/minus terminals with the correct cables.
NOTE
•Unplug the AC cord from the AC outlet before installing
the speakers.
CAUTION
•Make sure external speakers have 4 ohm and 10 watt
specifications.
•Connect the plus/minus terminals with the correct cables.
Incorrect connection may cause a short.
How to connect the
speaker cable
Push down
the tab.
Insert the
end of the
cable.
1
2
3
Lift the tab
back up.

11
LC-37HV6U
Basic adjustment settings
AV input mode menu items
List of AV menu items to help you with
operations
OPC
Backlight
Contrast
Black Level
Color
Tint
Sharpness
Advanced
C.M.S.
ColorTemp
Black
3D-Y/C
Monochrome
Film Mode
I/P Setting
Picture
No Signal Off
No Operation Off
EZ Setup
CH Setup
Speaker
Input Signal
Parental CTRL
Position
Picture Flip
Language
Treble
Bass
Balance
Dolby Virtual
Audio Only
Input Select
DNR
Audio Out
Quick Shoot
Audio
Power control
Setup
Option
PC input mode menu items
List of PC menu items to help you with
operations
OPC
Backlight
Contrast
Black Level
Red
Green
Blue
C.M.S.
Picture
Power Management
Input Signal
Speaker
Auto Sync.
Fine Sync.
Picture Flip
Language
Audio
Power control
Setup
Treble
Bass
Balance
Dolby Virtual
Option
Audio Only
Audio Out
Quick Shoot
Appendix
PC compatibility chart
Apple and Macintosh are registered trademarks
of Apple Computer, Inc.
DDCis aregisteredtrademarkofVideoElectronics
Standards Association.
Power Management is a registered trademark of
Sun Microsystems, Inc.
VGA and XGA are registered trademarks of
International Business Machines Co., Inc.
PC/MAC Resolution Horizontal Frequency Vertical Frequency VESA Standard
PC 31.5 kHz
37.9 kHz
31.5 kHz
37.9 kHz
31.5 kHz
37.9 kHz
37.5 kHz
43.3 kHz
31.5 kHz
35.1 kHz
37.9 kHz
48.1 kHz
46.9 kHz
53.7 kHz
48.4 kHz
56.5 kHz
60.0 kHz
68.7 kHz
45.0 kHz
48.1 kHz
64.0 kHz
34.9 kHz
49.7 kHz
60.2 kHz
640 x 400
720 x 400
VGA
640 x 480
WVGA 848 x 480
SVGA
800 x 600
1024 x 768XGA
1280 x 720
WXGA 1280 x 768
SXGA 1280 x 1024
VGA 640 x 480
MAC13"
XGA 1024 x 768
MAC19" SVGA 832 x 624
MAC16"
60 Hz
85 Hz
60 Hz
85 Hz
60 Hz
72 Hz
75 Hz
85 Hz
60 Hz
56 Hz
60 Hz
72 Hz
75 Hz
85 Hz
60 Hz
70 Hz
75 Hz
85 Hz
60 Hz
60 Hz
60 Hz
67 Hz
75 Hz
75 Hz
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O

12
LC-37HV6U
Command table
•About the command except being indicated here, it is outside the guarantee range of operation.
CONTROL ITEM COMMAND
PARAMETER
CONTROL CONTENTS
POWER SETTING It shifts to standby.
It input-switches by the toggle. (It is the same as an input change key)
It input-switches to TV. (A channel remains as it is. (Last memory))
It input-switches to INPUT1~INPUT4.
It input-switches to PC.
An input change is also included.
Although it can choose now, it is toggle operation in inside.
Although it can choose now, it is toggle operation in inside.
(Toggle)
Input terminal number (1–4)
AUTO
AV-Y/C
COMPONENT
AUTO
AV-Y/C
COMPONENT
DVI
(Toggle)
STANDARD
DYNAMIC
MOVIE
DYNAMIC (Fixed)
GAME
USER
Volume (0–60)
AV mode. ( ±10)
PC mode. (±90)
AV mode. ( ±30)
PC mode. (±60)
Only PC mode. (±90)
Only PC mode. (±20)
(Toggle) [AV]
Toggle operation.
An input change is included if it is not TV display.
In Air, 2–69ch is effective.
In Cable, 1–125ch is effective.
If it is not TV display, it will input-switch to TV.
If it is not TV display, it will input-switch to TV.
Change toggle operation of tuner A/B.
Toggle operation of a closed caption.
(Toggle)
Side Bar [AV]
S.Stretch [AV]
Zoom [AV]
Stretch [AV]
Normal [PC]
Stretch [PC]
Dot by Dot [PC]
Zoom [PC]
(Toggle)
Off
SRS
FOCUS
FOCUS
+
SRS
One screen
Twin screens
The channel number of TV
The channel number of TV + 1
The channel number of TV —1
(Toggle)
(Toggle)
OFF
CC1
CC2
T1
T2
(1~125)
AUTO
POWR
ITGD
ITVD
IAVD
IPCD
INP1
INP3
INPUT SELECTION A TOGGLE
INPUT SELECTION B
AV MODE SELECTION
VOLUME
POSITION
VIEWMODE
SRS
TWIN PICTURE
CHANNEL
ANT-A/B
CC
DIRECT
CH UP
CH DOWN
CHANNEL
H-POSITIONH-POSITION
V-POSITION
CLOCK
PHASE
INPUT 1
INPUT 3
AVMD
VOLM
HPOS
VPOS
CLCK
PHSE
SRSS
TWI N
DCCH
CHUP
CHDW
ANTS
CLCP
WIDE
0
x
0
*
x
0
0
1
2
3
1
2
0
*
*
*
*
*
0
0
*
x
x
x
0
1
2
3
4
5
1
1
2
3
4
0
1
2
3
4
5
6
7
8
*
*
1
2
3
4
5
6
*
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
*
*
*
*
*
*
*
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
*
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
*
*
*
*
*
*
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
TV
INPUT1-4
PC
NOTE
•If an underbar (_) appears in the parameter column, enter a space.
•If an asterisk (*) appears, enter a value in the range indicated in brackets under CONTROL CONTENTS.
•As long as that from which the parameter (×) in the table is a numerical value, it may write anything.
Return code (0DH)
Response code format
Normal response
Problem response (communication error or incorrect command)
Return code (0DH)
OK
ERR
RS-232C port specifications
Return codeCommand 4-digits Parameter 4-digits
PC Control of the System
•When a program is set, the Display can be controlled from the PC using the RS-232C terminal.
The input signal (PC/AV) can be selected, the volume can be adjusted and various other adjustments and
settings can be made, enabling automatic programmed playing.
•
Attach an RS-232C cable cross-type (commercially available) to the supplied Din/D-Sub RS-232C for the
connections.
NOTE
•This operation system should be used by a person who is accustomed to using computers.
Communication conditions
Set the RS-232C communications settings on the PC to match the display’s communications conditions.
The Display’s communications settings are as follows:
Baud rate:
Parity bit:
Data length:
Stop bit:
Flow control:
9,600 bps
8 bits
None
1 bit
None
Appendix
Command format
Communication procedure
Send the control commands from the PC via the RS-232C connector.
The display operates according to the received command and sends a response message to the PC.
Do not send multiple commands at the same time. Wait until the PC receives the OK response before sending
the next command.
Eight ASCII codes +CR
Command 4-digits:Command. The text of four characters.
Parameter 4-digits:Parameter 0 –9, x, blank, ?
Parameter
Input the parameter values, aligning left, and fill with blank(s) for the remainder. (Be sure that 4 values are input for the
parameter.)
When the input parameter is not within an adjustable range, "ERR" returns. (Refer to "Response code format".)
No problem to input any numerical value for "x" on the table.
When "?" is input for some commands, the present setting value responds.
C1 C2 C3 C4 P1 P2 P3 P4
0055
100
–30
0009
0
????
?

13
LC-37HV6U
DIMENSIONS
14
23
/ 64 (365)
16
59
/ 64 (430)
9
27
/ 32 (250)7
13
/ 64 (183)
7
5
/ 64 (180)
3
47
/
64
(95)
3
/
16
(5)
Unit: inch/(mm)
AVC System

14
LC-37HV6U
3
7/32
(82)
3
35/64
(90)
37
21/64
(948)
21
29/64
(545)
12 (305)
18
7/32
(462.8)
32
11/32
(821.6)
19
1/2
(495.5)
30
55/64
(784)
2
7/16
(62) 5
7/64
(130)
5(127)
3/16
(5)
7
7/8
(200)
7
7/8
(200)
3
11/32
(85)
Unit: inch/(mm)
Display

15
LC-37HV6U
REMOVING OF MAJOR PARTS
1. Remove the five top cabinet retaining screws and slide the top cabinet backward to remove it.
2. Remove the four side cover retaining screws on both the right and left sides and slide the side covers
backward to remove them.
3. Remove the one front panel retaining screws and remove the front panel.
4. Remove the five bottom cabinet retaining screws and slide the bottom panel backward to remove it.
5. Remove the four screws securing the main PWB angle and remove the angle upward.
6. Remove the four screws securing the main PWB to the angle and remove the main PWB.
Ë Ë
Ë Ë
Ë AVC System
Top Cabinet
Side Cover (L)
Side Cover (R)
2
2
1
1
1
3
4
4
4
Front Panel
Bottom Panel
Main PWB Angle
6
5
Main PWB

16
LC-37HV6U
7. Remove the system/control terminal retaining:
7-1. Remove the four hex head screws securing the terminals of the system and control cables (white).
7-2. Remove the four screws securing the terminal of the system cable (gray).
7-3. Remove the four rear chassis retaining screws.
8. Remove the PC I/F and Audio I/F units:
8-1. Remove the five PC I/F top shield retaining screws and remove the shield.
8-2. Remove the six PC I/F unit retaining screws and remove the unit.
8-3. Remove the two PC I/F bottom angle retaining screws and remove the angle.
8-4. Remove the two Audio I/F unit retaining screws and remove the Audio I/F unit.
9. Remove the rear chassis.
9-1. Remove the three tuner nuts.
9-2. Remove the 13 rear cabinet retaining screws and remove the rear cabinet.
10. Remove the three power unit retaining screws and remove the power unit.
8-1
8-2
8-3
8-4
7-1
7-2
7-3
PC I/F Top Shield
PC I/F unit
PC I/F Bottom Angle
Audio I/F unit
Rear Cabinet
9-2
9-2
9-2
9-2
9-2
9-1
10 Power Unit

17
LC-37HV6U
11. Remove the AV unit:
11-1. Remove the five AV unit retaining screws and remove the AV unit.
11-2. Remove the three AV unit angle retaining screws and remove the angle.
12. Remove the fan:
12-1. Remove the two cooling fan retaining screws and remove the cooling fan.
13. Remove unit from the front chassis:
13-1. Remove the two hex head screws and four screws securing the front shield to the front chassis and
remove the front shield.
13-2. Remove the four screws securing the front unit and remove the unit.
11-1
11-2
AV Unit
AV Unit Angle
13-2
Front Unit
Front Shield
13-1
13-1
Cooling Fan
12-1

18
LC-37HV6U
Ë Ë
Ë Ë
Ë Display
1. Remove the top and bottom terminal covers.
2. Remove the four lock screws from the speaker. Disconnect the speaker terminals and detach the speaker.
3. Remove the four lock screws from the stand, and detach the stand.
4. Remove the 18 lock screws from the cabinets A and B, and remove the cabinet B.
5. Remove the two lock screws from the operation PWB assembly, and detach the operation PWB assembly.
6.Remove the lock screw from the operation PWB insulating sheet, and detach the operation PWB insulating sheet.
7. Remove the seven lock screws from the main PWB shield, and detach the main PWB shield.
8. Remove the four lock screws from the stand fixture, and detach the stand fixture.
Speaker
Stand
4
4
4
2
4
3
1
Terminal Cover (Top)
Terminal Cover (Bottom) P152 P151
5
6
7
8
Stand Fixture
Main PWB Shield
Operation PWB Assembly
Operation PWB Insulating Sheet

19
LC-37HV6U
9. Open the six FFC holders.Remove the three lock screws from each of the right and left FFC holders.Disconnect
all the FFC connectors and detach the right and left FFC holders.
10.Remove the two lock screws from the speaker jack PWB, disconnect the connector, and detach the speaker jack
PWB.
11.Remove the two lock screws from the R/C, LED PWB, and detach the R/C, LED PWB.
12.Disconnect the connectors from each PWB.(13 from the monitor PWB, 5 from the power PWB, 6 from the audio
PWB, 7 from the inverter-1 PWB, 5 from the inverter-2 PWB, 7 from the inverter-3 PWB, 6 from the inverter-4 PWB,
2 from the 1-Bit amplifier unit, and 1 from the thermistor PWB)
FFC Holder (Left)
FFC Holder (Right)
Cable Holder Cable Holder
Speaker Jack PWB
R/C, LED PWB
P101
CN4101 CN4102
9
11 10
9
SC4603SC4601 SC4604SC4602
CN7004
CN4101
CN2004
CN2002
CN4701
CN4702
CN3702
CN3701
CN3782
P7505
P7506
P7507
CN2702
P7554 P7644
P7647
P7618
P7619
P7616
CN7705
CN2003
12
12
12 12
12 12
12
12
12
12
12
12
12
12
12
Monitor PWB
Inverter-2 PWB Thermistor PWB Inverter-4 PWB
Inverter-3 PWB
1-Bit Amplifier Unit
Audio PWB
Inverter-1 PWB
Power PWB

20
LC-37HV6U
13. Remove the eight lock screws from the Monitor PWB, and detach the main PWB.
14. Remove the six lock screws from the power PWB, and detach the power PWB.
15. Remove the four lock screws from the audio PWB, and detach the audio PWB.
16. Remove the three lock screws from the holder, and detach the holder.
17. Detach the inverter-1 PWB.
18. Remove the three lock screws from the inverter-2 PWB, and detach the inverter-2 PWB.
19. Detach the inverter-3 PWB.
20. Remove the three lock screws from the inverter-4 PWB, and detach the inverter-4 PWB.
21. Remove the two lock screws from the thermistor PWB, and detach the thermistor PWB.
22. Remove the two lock screws from the 1-Bit amplifier unit, and detach the 1-Bit amplifier unit.
23. Remove the three lock screws from the chassis, and detach the chassis.
16
13
15
22
17 19
18
14
21
20
Inverter-3 PWB
Holder
1-Bit Amplifier Unit
Monitor PWB Audio PWB
Inverter-4 PWB
Thermistor PWB
Power PWB
Inverter-2 PWB
Inverter-1 PWB
Chassis
23
23