Hitachi C15-LC880SNT User manual

SPECIFICATIONS AND PARTS ARE SUBJECT TOCHANGE FOR IMPROVEMENT
LiquidCrystal DisplayTelevision/Monitor
July 2005 Digital Media Systems Group, Hitachi Asia Ltd.
Caution
Besuretoreadthis manual beforeservicing.Toassure safety fromfire, electric shock, injury,harmfulradiation
and materials, various measures are providedin thisHitachiliquid crystal television/monitor.
Besure to readthecautionaryitemsdescribedinthemanual to maintainsafety beforeservicing.
ServiceWarning
1.The LCD Panel Moduleismade of glass.When handlingbrokenLCD Panel Module, takespecial carenot to
be injured.
2.Replacement work should only start after the LCD Panel Module and the AC/DC Power Supply hasbecome
sufficientlycool.
3.Take special care of the LCDdisplay panel anddo not damage itssurface.
4.Do not touchthe LCDPanel Module with yourbare hands andprotect its surface from stains.
5.Itisrecommendedtousecleansoftglovesduringservicinginorderto protectthe LCDdisplaypanelandthe
servicepersonnelhimself.
Contents
(15 model) (20 model)
*SAFETYNOTICE...................................................2
* DISPLAYMODES..................................................2
* SPECIFICATIONS...................................................3
*LOCATIONOFCONTROLS......................................4
* CONNECTIONS......................................................7
*FACTORY SETTTINGS...........................................10
* TROUBLESHOOTING..............................................11
*SCHEMATIC DIAGRAMS.............................................12
*PRINTEDCIRCUITBOARD........................................21
*BLOCK DIAGRAM...............................................27
*WIRINGDIAGRAM.............................................28
*EXPLODEDVIEW&MECHANICALPARTSLIST..........29
*INFORMATIONOFICS...............................................31

-2-
*Modes,whicharenotlistedinthe abovetable,maynotbe supported.Foran optimalpictureitis
recommended tochooseamode listed inthe table.
*For15 model, thereare3typesof incomingdisplaymodescompatiblewithWindowsasshown
inthetablesabove.
*For20 model,thereare2typesofincoming displaymodescompatiblewithWindowsasshown
inthe tableabove.
*Sometimes,the image maybe disrupted due tothe frequency standardfromthe VGAcard.
However,thisisnotan error. You mayimprovethissituation byactivatingthe automaticadjustment
orbymanuallychanging the phaseand the clock settingsinthe menu.
*If you switchoff the TV/monitor,interferencelinesmayoccuron yourscreen.Pleasenotethat
thisisnormal.
*Toextend the servicelifeof the product, werecommend thatyou useyourcomputerspower
management function.
DISPLAYMODES
SAFETYNOTICE
Maintenanceand repairofthisLCD TV/monitorshouldbe done byqualified servicepersonnelonly.
Criticalpartsthathavespecialsafetycharacteristics areidentified bya inthereplacementparts
list. Useof anysubstitutereplacementpartthatdoesnothavethe samesafetycharacteristics as
the recommended replacementpartinthe partslist mightcreateshock,fireand /orotherhazards.
Read and complywithall caution andsafetyrelated noteson orinside theLCD/monitorcabinet,the
printed circuitboardsorthe LCD PanelModule.Pleasenotethe following safetysymbolsindicated
below.
TOREDUCETHERISK OFELECTRICSHOCK,
DONOTREMOVE COVER.
NOUSER-SERVICEABLEPARTS INSIDE.
REFERSERVICING TOQUALIFIED SERVICE
PERSONNEL.
RISKOFELECTRIC
SHOCKDO NOT
OPEN
CAUTION
Thissymbolindicates “dangerous
voltage”inside the product that
presentsarisk of electricshockor
personalinjury.
Thissymbolindicates
importantinstructions
accompanying the
product.
15 Incomingdisplaymode(input)
640x480
800x600
1024 x768
Resolution Horizontal
Frequency (KHz)
31.47 (N)
37.88 (P)
48.36 (N)
Vertical
Frequency (Hz)
60.00 (N)
60.32 (P)
60.00 (N)
PixelFrequency
(MHz)
25.18
40.00
65.00
Comment
DOS
VESA
VESA
20 Incomingdisplaymode(input)
640x480
800x600
Resolution Horizontal
Frequency (KHz)
31.47 (N)
37.88 (P)
Vertical
Frequency (Hz)
60.00 (N)
60.32 (P)
PixelFrequency
(MHz)
25.18
40.00
Comment
DOS
VESA

-3-
SPECIFICATIONS
OperatingTemperature
OperatiingHumidity
StorageTemperature
StorageHumidity
Panel
Model C15-LC880SNT C20-LC880SNT
Size
DisplaySize
PixelPitch
ViewingAngle(H/V)
ScreenTiltAngle
15.1
304.1(H)X228.1(V)mm
0.297(H)X0.297(V)mm
<140 /125
20.1
408(H)X306(V)mm
0.51(H)X0.51(V)mm
<160 /140
Front5 /Rear15
Horizontal
Vertical
ContrastRatio
Brightness
DisplayColor
Frequency
400cd/m2
16.2Million
30~ 70KHz
50~75Hz
400:1 500cd/m2
16.7Million
DisplayResolution OptimumMode
MaximumMode 1024 X768 @70Hz
1024 X768 @75Hz 800 X600 @70Hz
800X600@75Hz
Input Signal Sync.
VideoSignal
RGBSignal
H/VSeparate, TTL,P. orN.
H/VComposite,TTL,P.orN.
Sync-on-green0.3Vp-p,N.
1Vp-p@75 ohm
0.7Vp-p@75 ohm
TV/Video ColorSystem
Sound System
Video Format
PowerSupply Input
Output (Adapter)
Typical
PowerSaving
PowerConsumption
Dimensions(WxHxD)
Weight
EnvironmentalConsiderations
AudioInput
Frequency
Response
AudioCharacteristics
PAL/ SECAM/ NTSC
DK/I / BG/ M
CVBS,S-VIDEO, Y/Pb/Pr
AC100 -240Vrms(50Hz/60Hz)
DC 12V/4.5A DC 12V/5.2A
<54W
<3W <65W <3W
390 X401X188mm
5.3Kg 552 X460X188mm
8.4Kg
50 to104 (10 to40 )
10%to80%
13 to113 (-25 to45 )
5%to95%
RCAJack Red(R)White(L),0.5 0.3Vrms
RF: 100Hz~12KHz(at 3dB)
AV: 100Hz~13KHz(at 3dB)
Note:
*Design and specificationsaresubject tochange withoutnotice.
*Weight and dimensionsshownareapproximatevaluesonly.

-4-
RemoteControl
1.RECALL button
Todisplaysetup informationofchannel
2.MUTEbutton
Toswitchon/off sound mute
3.TV/VIDEObutton
ToselectTV,AV1,AV2, S-Video, COMP, VGAorDVImode
4.STANDBYbutton
Toswitchon the LCD TV/monitorwhen atstandbymode orviceversa
5.PICTUREbutton
Toselectpictureeffectmode (Standard/Soft/Custom/Bright)
6.SLEEP button
Toon/off sleep mode and setthe sleep timer
LOCATIONOFCONTROL(Continued)
1 2
4
10
3
5
76 8
9
11
12
14
12
13
15
16
17 15
16
LOCATIONOFCONTROL

-5-
7.SOUNDbutton
Toselectthe sound effectmode (Custom/News/Cinema/MusicHall)
8.TIMEbutton
Todisplaythe presettime
9.NUMBERbuttons
Todirectlyselectprogramnumber
10.DIGITbutton
Toselectone,twoorthree-digitprogramnumberinputoptions
11.LST-CH button
Toreturntopreviouslyselected programnumber
12.TELETEXTbuttons(OPTIONAL)
Thesebuttonsareused forcertainmodelswithTeletextfunctionsonly.Forfurtherdetails,refer
tothe “TELETEXTFUNCTION”sectioninthismanual
13.CH I/II button
ToswitchbetweenNICAM/A2stereoand mono sound output
14.TVMENU button
Toenterthe TVmenu directlytotune theprograms
15.P-/+ ( )buttons
Toselectprevious/nextprogramand tooperatethemenu
16. -/+( )buttons
Todecrease/increasevolumeand toadjustthe menu
17.MENU button
Toenterorexit fromtheMENU(TV/AVmode)
Toacceptyourselection (PCmode)
LOCATIONOFCONTROL

-6-
FrontandSidePanels
1.TV/VIDEObutton
ToselectTV,AV1,AV2, S-Video,
COMP,VGAorDVImode
2.MENU button
Toenterorexitfromthe menu
3.PROGRAMbuttons
Toselectprevious/nextprogram
4.VOLUMEbuttons
Todecrease/increasevolume
5.STANDBYbutton
Toswitchonwhen atstandbymode orvice
versa
6.POWERINDICATOR
Lightsup inred when the setison standby;
Lightsup ingreen when the setispoweron
7.REMOTECONTROLSENSOR
Infraredsensorforthe remotecontrol
For15 model
For20 model
5
6
7
1
2
3
4
1
2
3
4
5
67
LOCATIONOFCONTROL

-7-
Connecting TheAntenna
Note:
*Aerialconnections:Standard-phono socket75 orFconnector..
*Input impedance:75 unbalanced.
*ForAustraliaonly-Install an externalaerialconformingtoAS 1417.1forsafetypurpose.
CONNECTIONS
Antenna

-8-
Connecting ThePC
STEPS:
1.Switchoff allpowersuppliestothe equipmentand TVsetbeforeconnection
2.Connectthe signaland audiocablesfromthecomputeroutput terminaltothe TV
3.Connectpowercord
4.Switchon the TVfirst, then switchon the computer
5.Ifthe TVstill doesnotfunctionproperly,pleaserefertothetroubleshooting sectiontodiagnose
theproblem.
*Pleasedo notopen the coverofthe TV
Note:
Donotpullthe cables.When connectingand disconnecting the cables,do itwithyourhand holding
the connector.
CONNECTIONS
ToAudiooutput
ToAudioinput (AV2)
ToSignalinput (D-sub)
ToSignaloutput (D-sub)
ToDVIinput
ToDVIoutput

-9-
CONNECTIONS
ConnectingAVEquipment
ThisTVsetprovidesAV1,AV2inputterminals,S-Videoand agroupof Y/Pb/Prterminalforconnection
toVCR,VCD,DVDorothervideo equipment.
Pleaserefertothe instruction manualofthe otherequipmentformoreinformation on theconnection
tothe TV.
Note:
*Pleasedisconnect all the powersuppliestotheequipmentandTVset beforeconnection.
*Donotpull thecables.When connecting and disconnecting the cables,do it withyourhand
holdingthe connector.
*Only1setofaudiocableistobe connected toAudioinputterminalsofAV2.
VIDEOEQUIPMENT
ToAudiooutput
ToAudio
input(AV2)
VIDEOEQUIPMENT VIDEOEQUIPMENT
VIDEOEQUIPMENT
ToAudio
input(AV2)
ToAudio
input(AV2)
ToAudiooutput ToVideooutputToVideoinput
ToVideoand Audioinput
ToVideoand Audiooutput
ToComponent input ToS-Video input
ToComponent output
ToS-Video output
ToAudioinput (AV2)

-10 -
FACTORYSETTINGS
1.PressMENUbutton,thenpress3210usingthenumberbuttonontheremotecontroltoenter
intothefactory setting.
2.Thefactorysettingmenuwill be displayedonthescreen. Thefollowingtableisshownwhen in
AVmode:
Item Factorysetting C15-LC880SNT C20-LC880SNT
1 BasicSetting Backlight 50
NVRAMAddr
NVRAMVal
2 ColorSetting AutoAdjust
Red 0
Green 0
Blue 0
RedOffset 0
Green Offset 0
Blue Offset 0
MinVolume 0
Max Volume 68
3 Sound Setting Dot1XPos 31
Dot1YPos 69
Dot2XPos 62
Dot2YPos 81
4 4200K 5000KWarm Brightness 128
Contrast 128
Red 247
Green 237
Blue 237
5 STANDARD Brightness 128
Contrast 128
Red 255
Green 255
Blue 255
6 COOL Brightness 128
Contrast 126
Red 224
Green 228
Blue 251
7 CUSTOM Brightness 128
Contrast 128
Red 255
Green 255
Blue 255
8 AdvancedSetting FactoryMode 1
PowerMode 1
Panel Index 34
Decder SatHue 0
EnableZoom 1
Enable SCART P 11
Enable DVIPort 1
FactoryReset
9 Version Info V1.9-C15-LC880SNT V1.9-C20-LC880SNT
ADDC:V8-L15GC1-A1D01 ADDC:V8-L20GC1-A1D01
DDDC:V8-L15GC1-A1D02 DDDC:V8-L20GC1-A1D02

-11-
TROUBLESHOOTING
Yes
No
No Check LED
ReplaceLED
withanewone
Isthe powercordand
DC adapterplugged in?
LEDlightsup
Press Powerbutton
Yes
LEDlightisgreen LEDlightisred
Check inverterPWBunit Check MCU(U4)
1.Check MCU (U4)
2.CheckCN3(or
CN7)isconnected
3.Check U8has
VCCvoltage
1.Connectthe line
ofJ9andinverter
2.Replaceinverter
withanewone
ReplaceMCU with
anewone ReplaceDRIVE
PWBunitwith
anewone
1.ReplaceMCU
withanewone.
2.ReplaceU8
withanewone.
Defective
Normal Defective
Defective
Normal
Check powerinputsystem
1.ACadapter
*Normal?
*Connectedproperly?
2.U9has+5V?
3.U10has3.3V?
4.LEDcontrolselectrocircuit?
5.JD3andJD2areconnected?
Normal
TVDOESNOTTURN ON
Plugin
Defective

-12-
SCHEMATICDIAGRAMS
MainDiagram-1

-13-
SCHEMATICDIAGRAMS
MainDiagram-2

-14-
SCHEMATICDIAGRAMS
ControlKeys Diagram

-15-
SCHEMATICDIAGRAMS
PowerDiagram

-16-
SCHEMATICDIAGRAMS
TunerDiagram

-17-
SCHEMATICDIAGRAMS
TeletextDiagram

-18-
SCHEMATICDIAGRAMS
VideoDecoderDiagram

-19-
SCHEMATICDIAGRAMS
AudioAndCONNDiagram

-20-
SCHEMATICDIAGRAMS
Lvds_ttl-outDiagram