Hitachi 50SBX78B Adjustable data Others Fixed data be careful not to change, When Exchanging

Page 24

1.ASSEMBLED P.W.B. ADJUSTMENT 1.l Memory Initialization

Adjustment procedure

(1)Press INPUT key on Control Panel and then Power On to access Video Chroma adjustment mode.

(2)Receive signal on main picture.

(3)Check the OSD according to table below, using Av buttons on Remote Control.

 

P.01

 

AP84

 

SERVICE

 

 

0

 

SUB

CONT

 

 

14

 

SUB

COLOR

 

 

10

 

SUB

TINT

 

 

45

 

SUB

SHARP

 

 

38

B.E. P POINT1

EXT

RGB

BRIGHT

40

 

EXT

RGB

CONT

60

 

BRIGHTNESS

 

 

80

 

* SUB

BRIGHT

ADJ.

0

 

INITIAL

SET

 

0

 

 

 

PO2

 

 

 

 

G

DRIVE

GAIN

 

 

 

 

B

DRIVE

GAIN

P.05

1

AP84

 

H

POSITION

WPDL

1

1

 

AFC G

 

IHI BRT

!

1

I

H

BLK

END PHASE

I-l+1

 

 

 

V

BLK

PHASE

 

 

 

VFREQUENCY V POSITION R-Y POSITION R-Y LEVEL G-Y LEVEL GPPHS

 

 

P.03

AP84

B

CUT

OFF

 

80

 

S-TRAC

1

 

 

 

 

P.06

 

AP84-

 

YA

 

 

n

 

 

 

 

 

 

H

POSI

(CENT)

 

04

*

Y DL

 

 

 

 

0

IV

POSI

(CENT)

1

07

I*

 

 

 

TXACL

 

1

 

 

 

 

I

 

SET

1

0

I

COLOR

A

i-l

INITIAL

 

 

Z

OSD SETTINGS

 

 

 

 

 

 

 

 

 

 

 

C TRAP

0

 

 

 

 

 

 

TOF

 

FQ

0

 

 

 

 

 

 

TOF

Q

0

 

 

 

 

 

 

COLOR

SYSTEM

0

CLAMP

DELAY

 

 

 

DY

GAIN

9

 

 

 

 

 

 

 

 

 

*: Adjustable data.

Others: Fixed data (be careful not to change)

(4)Check MENU key to exit VIDEO CHROMA ADJUST mode.

NOTE: (1)

If there

is a different value than shown

 

in table above, for fixed data, adjust it

 

using

4,

 

buttons (only in this case).

(2)

When

exchanging

microprocessor and

 

TV is turned on for first time, it requires

 

initialization of VIDEO CHROMA ADJ

 

on Pl

and

P6.

 

(3)

Should

be

changed

to OFF for FIRST

 

TIME TOUR at first Power ON by

 

pressing MENU key during FIRSTTIME

 

TOUR running.

24

1.2Comb filter operation check Adjustment preparation

(1)Receive the color bar signal at the regular tuning point.

(2)Set the CONTRAST control to MAX and the other controls to center.

(3)Set the Al to OFF, and 3D Y/C to ON in Advanced Settings.

Adjustment procedure

(1)Check that between the color bars there are not line dots every second color bar as shown in the drawing.

Check @and (@line dots.

1.3Sub-picture position adjustment Adjustment preparation

(1)Select signal on main picture.

(2)Video settings have to be at normal condition.

Adjustment procedure

(1)Press the INPUT and POWER button on Control

Panel at same time to access VIDEO CHROMA ADJUST mode.

Select H POSI and V POSI using A’(I buttons. ;:; Adjust the H POSI (HORIZONTAL) and V POSI

(VERTICAL) position using 4, buttons.

(4)Press MENU button to exit VIDEO CHROMA ADJUST mode.

(5)Select single PINP mode and move the sub picture, using the MOVE button. Distance between PINP and edge of screen should be equal when moved. If it is not, repeat (1) - (5).

NOTE: Check the position of MULTI PINP mode. Check the right edge of the sub pictures for MV-4 to make sure there is no separation between the MULTI PINP and the edge of the screen.

Image 24
Contents Contents Projection Color TelevisionSafety Notice USE Isolation Transformer When Servicing Safety Precautions Leakage Current for Appliances and UnderwritersTube Detailing X-radiation ShieldPage Servicing Precautions Immediately before handling any semiconductorUse Solding Iron to Pry Leads Insulated Jumper Wire Bare JumperSoldering Iron Iron wire Determine the positionsIPOWER/DEFLECTION PWB Technical CautionsAudio Output Power Dimension 50SBX78BAudio Input Stereo Audio OutputGeneral Information TransmitterCustomized Picture and Sound Adjustments CursorCOLOR, Tint Brightness Color TintIll BassTV Guide PLUS+ GuideVCR Step ExampleSelect Outside antenna or Cable TV coaxial cableRecall AudioVCR #I 0Set U END of SET UP FBT RemarkMake sure the silicon cover is Covering the high voltage outputAdjustment CRTCPT Adjustable data Others Fixed data be careful not to change When ExchangingTime Tour at first Power on by Adjustment procedureFinal Assembly Adjustment Contrast Half Brightness MinimumWhite balance adjustment Sub brightness adjustmentRepeat for P832 and ROM6 Green, P862 and ROM4 for Red PointFrontrear MrnFront Rear Center Front RearVertical size adjustment R630 +2 mmTwa4 Horizontal size adjustment R603 Adjustment preparation +- $$iObserving Points Convergence first. Press front panel MagicThis can eliminate the need for a complete JIG Screen Specification BeforeAfter Convergence point adjustment Digital Convergence Remote ControlThen Press RECALL’ ROM WriteGUIDE+ OSD Adjustment Point CRT, cabinet locationsSURROUNDP.W.B.SIGNALSUB B. VM Main Chassis Signal P.W.BIscii ROM8 ROM6 ROM4Power/Deflection P.W.B Main ChassisIXI Ooor CPT R G B, Focus Pack, Control P.W.BTroubleshooting YesOFF TvsvYes No.~ Voltage at pin 5 Yes E991 blownNormal Abnormal 0517 Q516 Does on-screen 1501, 1903, 1001Q108, Q109, QllO, Q008 Yes NormalEception impossible with snow noise Yes U102 Yes Vcc Sv, BP 5v, T3u102Defective Synchronization Cl902PRT R PRT GNo Sound U101DCU Repair Table NtscTV 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 Replacement Parts List Symbol PartProduct Iooopfkb 50V TapeComponents Symbol Part IELTape 5OVChip Product Service SymbolCSE3 Symbol Part Description RmpgogdMTZJ-I LightPart Symbol Tuner Unit5MA Ukdg CircuitsPart Description 1OUHIoouh CoilReceiver Through Improper Servicing QAI 1KJ Tape ROA2 ROP7 Replacement Parts List With a n Have special OOK-JB SRD1/2P-S SRD1/2P-BIOK-JB OK-JBChip 1KJMINI-CHIP RAC2OHM IOK-JQRgii RkioRlio Symbol Part NO.NO RY50 Symbol EF05951

60SBX78B, 50SBX78B specifications

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