Hitachi 60SBX78B Repeat for P832 and ROM6 Green, P862 and ROM4 for Red, Point, Frontrear, Mrn

Page 27

2.4Sub picture white balance adjustment (ROM4, ROM6, ROM6)

Adjustment preparation

(1)Start adjustment after power is ON for 20 minutes.

(2)Use a white raster signal for adjustment.

(3)Press “FREEZE” on the remote control and select “SINGLE” freeze mode to display the sub picture.

(4)Set CONTRAST to Maximum, Other conditions to center.

Adjustment procedure

(1)Connect oscilloscope to P802 and adjust ROM8 to match blue level of main and sub pictures.

(2)Repeat for P832 and ROM6 Green, P862 and ROM4 for Red.

Note:

If the

sub picture has a signal sag, adjust level at

 

center

point.

2.5Surround Check Adjustment preparation

(1)Input the following audio signals to the audio input of the VIDEO INPUT terminals.

lWhen checking surround:

@L CH: No signal

@R CH: 400Hz sine wave 1 Vpp.

l Set the AUDIO ADVANCED SETTING for INT.

SPEAKERS ON,DYNAMIC BASS OFF, LOUDNESS OFF and PERFECT VOLUME OFF

lSet the volume control of FRONT to around the

center.

lSet the BASS, TREBLE and BALANCE to center.

Note: Front waveform: Front speaker output of the set.

2.5.1 Surround off check

Adjustment procedure

(1)Set to SURROUND: OFF and check that the waveform shown below is obtained (Input signal @ and @ ).

FRONT

(5kHz)

R(400Hz)

Note: The rear and center will have no output.

2.5.2 Surround off/monaural check

Adjustment procedure

Check that the following waveform is obtained. The amplitudes of 2 channels are equal.

(Input signal @ only).

FRONT

L(400Hz)

R(400Hz)

I24

Note: Monaural check can be omitted. The rear and center have no output.

2.5.3 Matrix surround check

Adjustment procedure

(1) Set to SURROUND: MATRIX

l Check that the following waveforms are obtained. (Input signal @I and @ ).

l Front: Check that the phases of R and L are different and 400Hz is superimposed on 5kHz. The amplitudes of R and L are different.

l Rear: Check that the phases of R and L are opposite and 400Hz is superimposed on 5kHz. The amplitudes of R and L are different.

FRONTREAR

:mrn

Note: Center has no output.

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Contents Projection Color Television ContentsSafety Notice USE Isolation Transformer When Servicing Leakage Current for Appliances and Underwriters Safety PrecautionsDetailing X-radiation Shield TubePage Immediately before handling any semiconductor Servicing PrecautionsUse Solding Iron to Pry Leads Bare Jumper Insulated Jumper WireDetermine the positions Soldering Iron Iron wireTechnical Cautions IPOWER/DEFLECTION PWBStereo Audio Output Audio Output PowerDimension 50SBX78B Audio InputTransmitter General InformationBrightness Color Tint Customized Picture and Sound AdjustmentsCursor COLOR, TintBass IllTV Guide PLUS+ GuideVCR Example StepOutside antenna or Cable TV coaxial cable SelectAudio RecallVCR #I 0Set U END of SET UP Covering the high voltage output FBTRemark Make sure the silicon cover isAdjustment CRTCPT Adjustment procedure Adjustable data Others Fixed data be careful not to changeWhen Exchanging Time Tour at first Power on byContrast Half Brightness Minimum Final Assembly AdjustmentSub brightness adjustment White balance adjustmentMrn Repeat for P832 and ROM6 Green, P862 and ROM4 for RedPoint FrontrearCenter Front Rear Front RearVertical size adjustment R630 +2 mmTwa4 +- $$i Horizontal size adjustment R603 Adjustment preparationObserving Points Convergence first. Press front panel MagicThis can eliminate the need for a complete JIG Screen Specification BeforeAfter ROM Write Convergence point adjustmentDigital Convergence Remote Control Then Press RECALL’GUIDE+ OSD CRT, cabinet locations Adjustment PointROM8 ROM6 ROM4 SURROUNDP.W.B.SIGNALSUB B. VMMain Chassis Signal P.W.B IsciiPower/Deflection P.W.B Main ChassisIXI CPT R G B, Focus Pack, Control P.W.B OoorTvsv TroubleshootingYes OFFNo.~ Voltage at pin 5 Yes E991 blown YesYes Normal Normal Abnormal 0517 Q516Does on-screen 1501, 1903, 1001 Q108, Q109, QllO, Q008U102 Yes Vcc Sv, BP 5v, T3u102 Eception impossible with snow noise YesCl902 Defective SynchronizationPRT G PRT RU101 No SoundNtsc DCU Repair TableTV ON/OFF Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Exploded MEW Symbol Part Replacement Parts ListIooopfkb 50V Tape ProductComponents 5OV Symbol PartIEL TapeChip Symbol Product ServiceCSE3 Symbol Part Light DescriptionRmpgogd MTZJ-ICircuits Part SymbolTuner Unit 5MA UkdgCoil Part Description1OUH IoouhReceiver Through Improper Servicing QAI 1KJ Tape ROA2 ROP7 Replacement Parts List With a n Have special OOK-JB OK-JB SRD1/2P-SSRD1/2P-B IOK-JBRAC2 Chip1KJ MINI-CHIPIOK-JQ OHMRkio RgiiRlio Symbol Part NO.NO RY50 Symbol EF05951

60SBX78B, 50SBX78B specifications

The Hitachi 50SBX78B and 60SBX78B are advanced plasma televisions that represent the pinnacle of display technology in their respective categories. These models bring together innovative features, cutting-edge technology, and sleek design, ensuring an immersive viewing experience for consumers.

One of the standout characteristics of the Hitachi 50SBX78B and 60SBX78B is their screen size, with the 50-inch model catering to smaller spaces while the 60-inch offers a more cinematic experience. Both models boast impressive Full HD resolution, delivering a crisp and vibrant picture quality that enhances any viewing experience, whether it be movies, sports, or gaming.

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In summary, the Hitachi 50SBX78B and 60SBX78B offer a compelling package of features, technologies, and characteristics that cater to the needs of modern viewers. With superior image quality, versatile connectivity, and energy efficiency, these televisions are designed to deliver an exceptional home entertainment experience.
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