Toshiba 50A50 55A60 Screen and Mirror Alignments, Assembling Front Screen, Mounting Front Screen

Page 15
LENS LUSTER (Manufac- tured by Edmund Scientific Co.), etc.

SCREEN AND MIRROR ALIGNMENTS

ASSEMBLING OF

FRONT SCREEN

Fresnel sheet

Protect shield

FRONT

(for 50”)

Lenticular sheet

Protect shield

FRONT

 

 

 

 

 

 

 

Fresnel sheet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stick cotton

 

 

 

 

 

 

 

 

 

cloth tape

 

 

Label with part

 

 

 

 

 

 

 

 

Label with part

 

 

 

 

 

 

 

 

number

number

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(for 55”, 61”)

 

 

 

Lenticular sheet

Protect shield

 

 

 

 

 

 

 

 

Stick contton

 

 

 

 

 

 

 

 

FRONT

 

 

 

 

 

 

 

 

cloth tape

 

 

 

 

 

 

 

Fresnel sheet

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Label with part

Label with part

number

number

CAUTION : Do not hold the optical system parts (lens and mirror) with bare hand to avoid finger-prints on the surface of those parts.

HOW TO CLEAN LENS AND MIRROR

1.Be sure to remove sand dust with an air brush, etc.

2.When it is stained slightly, breathe upon it and wipe away with the specified cleaning cloth.

For other stains than the above, wipe the stains away

with the specified cloth into which a cleaning liquid has been soaked.

Cleaning liquid ....................

MOUNTING OF

FRONT SCREEN

5 screws

3 screws

3 screws

3 screws

4screws

*Please refer to Mechanical Disassembly on page 23.

HOW TO CLEAN SCREEN

When cleaning the screen, use a soft cloth so as not to damage the screen.

1.Wipe the screen with a dry cloth to remove moisture on the screen.

Note : Absolutely do not use detergent, water, alcohol, benzine, thinner, etc. for cleaning in order not to wipe away the black print on the surface.

SPECIFIC INFORMATIONS GENERAL ADJUSTMENTS

– 15 –

Image 15
Contents 50A60, 50A50 Table of Contents Product Safety Notice General Adjustments Safety InstructionsRAY Radiation Precaution Safety PrecautionLeakage will Occur CRT Assembly Replacement and MountingAdjusting Procedure in Replacing CRT Servicing PrecautionsCentering Adjustment Picture Tube Components AdjustmentB Focus Adjustment Tilt AdjustmentScreen VR Focus VR Location of Screen and Focus VR’SReplacement of High Voltage Cable Replacement of the CRTKEY Function in the Service Mode Service ModeEntering to Service Mode Displaying the Adjustment MenuSelf Diagnostic Function Selecting the Adjusting ItemsAdjusting the Data Exit from Service ModeAdjustment Procedure Electrical Adjustment WID Height HIT WidthPicture Position Adjustment Convergence AdjustmentKEY Function Convergence Adjustment Centering AdjustmentReplacing Convergence Unit CRT ReplacementAssembling Front Screen HOW to Clean Lens and MirrorHOW to Clean Screen Screen and Mirror AlignmentsFS Circuit Check Circuit ChecksHigh Voltage Check Anode Voltage Measuring MethodCircuit Checks Specific Informations Setting & Adjusting DataSafety Instructions Service Mode Adjusting Items and Data in the Service ModeTV/VIDEO Power Volume T S Exit Demo MenuMute ResetRecall Power Timer TV/VIDEO LightTV/CABLE function Programming Channel MemoryCircuit Block Diagram Mechanical Disassembly Chassis Replacement Parts List CapacitorsOMF Specific Informations General Adjustments Specific Informations General Adjustments Specific Informations General Adjustments Resistors Specific Informations General Adjustments Specific Informations General Adjustments Specific Informations General Adjustments Specific Informations General Adjustments Specific Informations General Adjustments Coils & Transformers TFB3086AD SemiconductorsIC, MC14053BFEL Miscellaneous PC Board Assemblies Picture TubeTuner Cabinet Parts AccessoriesBottom Foil Side SIGNAL/CON Board PB9450DEF/POWER Board PB9451 BACK/AV Board PB9452 DIGI-COMB Board PB9398 DIGI-CONV Board PB9453Drive Board PB9454-3 Drive Board PB9454-1Drive Board PB9454-2 FRONT-CONV Board PB9454-5 FRONT-IN Board PB9454-9REM Board PB9454-10 SVM Board PB9454-6 FRONT-CON Board PB9454-8 Terminal View of Transistors Memo Specifications Representative 50A60 Toshiba Corporation