Emerson 6420FE service manual Size Adjustment, 10. V. Position Adjustment, Software Reset

Page 18

8. H. Position Adjustment

Purpose: To obtain correct horizontal position of screen image.

Symptom of Misadjustment: If H. Position is incor- rect, horizontal position of image on the screen may not be properly displayed.

Test Point

Adj. Point

Mode

 

Input

 

 

 

 

 

 

 

 

 

 

---

CH o / p

RF

 

Mono-

buttons

 

scope

 

 

 

 

 

 

 

 

Tape

M. EQ.

 

Spec.

 

 

 

---

Monoscope

90±5%

 

 

 

 

 

Note: Use service remote control unit

1.Operate the unit for at least 20 minutes.

2.Enter the Service mode. (See page 5-1)

3.Receive the monoscope pattern.

4.Press "8" button on the remote control unit. "H-P" is indicated.

5.Press "CH o/p" buttons on the service remote control unit so that the monoscope pattern will be 90±5% of display size and the circle is round.

6.Turn the power off and on again. (Main power but- ton on the TV unit.)

9. V. Size Adjustment

Purpose: To obtain correct vertical width of screen image.

Symptom of Misadjustment: If V. Size is incorrect, vertical size of image on the screen may not be properly displayed.

Test Point

Adj. Point

Mode

 

Input

 

 

 

 

 

 

 

 

 

 

---

CH o / p

RF

 

Mono-

buttons

 

scope

 

 

 

 

 

 

 

 

Tape

M. EQ.

 

Spec.

 

 

 

---

Monoscope

90±5%

 

 

 

 

 

Note: Use service remote control unit.

1.Operate the unit for at least 20 minutes.

2.Enter the Service mode. (See page 5-1)

3.Receive the monoscope pattern.

4.Press "9" button on the service remote control unit and select "V-S" mode. (Display changes "V-S" and "V-P" cyclically when "9" button is pressed).

5.Press "CH o/p" buttons on the service remote control unit so that the monoscope pattern will be 90±5% of display size and the circle is round.

6.Turn the power off and on again. (Main power but- ton on the TV unit.)

10. V. Position Adjustment

Purpose: To obtain correct vertical width of screen image.

Symptom of misadjustment: If V. Position is incor- rect, vertical height of image on the screen may not be properly displayed.

Test Point

Adj. Point

Mode

 

Input

 

 

 

 

 

---

CH o / p

RF

 

Mono-

buttons

 

scope

 

 

 

 

 

 

 

 

Tape

M. EQ.

 

Spec.

 

 

 

---

Monoscope

See below.

 

 

 

 

 

Note: Use service remote control unit

1.Operate the unit for at least 20 minutes.

2.Enter the Service Mode. (See page 5-1)

3.Receive the monoscope pattern.

4.Press "9" button on the service remote control unit and select "V-P" mode. (Display change "V-S" and "V-P" cyclically when "9" button is pressed).

5.Press "CH o/p" buttons on the service remote control unit so that the top and bottom of the mono- scope pattern will be equal of each other.

6.Turn the power off and on again. (Main power but- ton on the TV unit.)

11. Software Reset

To reset software, press “5” button on the remote con- trol unit for at least 5 seconds after pressing “CH RETURN” button on the remote control unit.

5-4

L2401EA

Page 17 Page 19
Image 18
Page 17 Page 19
Contents
6420FE EWF2004 Important Safety Notice Table of ContentsDBµv SpecificationsDescription Condition Unit Nominal Limit DBµv AFT Pull In Range 10mV input MHz ±2.0 ±0.7Not be Above 0.5 mA Important Safety PrecautionsSafety Precautions for TV Circuit L6115IMPL6115IMP Precautions during Servicing Safety Check after Servicing Clearance DistanceLeakage Current Test Circuit Board Indications How to Remove / Install Flat Pack-ICStandard Notes for Servicing Pb Lead Free SolderMasking Flat Pack-IC Tape Tweezers With Iron WireMachine With Soldering IronInstallation Pin 1 of the Flat Pack-IC Is indicated by a markPresolder Ground for Workbench Instructions for Handling SemiconductorsGround for Human Body IncorrectDisassembly Method Cabinet Disassembly InstructionsDisassembly Flowchart Reference Notes in the TableRear Cabinet Rear Cabinet Main CBACRT TV Cable Wiring Diagram +B Adjustment Electrical Adjustment InstructionsHow to set up the service mode Service modeInitial Setting GeneralSD Check Mode F0 AdjustmentBlack Stretch Control Adjustment Purity Check10. V. Position Adjustment Position AdjustmentSize Adjustment Software ResetMode Input Cut-off AdjustmentWhite Balance Adjustment Tape SpecSub-Brightness Adjustment Focus AdjustmentPurity Adjustment Convergence Adjustment FiguresBlock SystemIF/Video Block Diagram L2401BLIFAudio L2401BLABlock Diagram CRT/H.VDiagram L2401BLPSchematic Diagrams / Cbas and Test Points Standard NotesTolerance of Capacitors are noted with the following Is not consistent here Wire ConnectorsHow to read converged lines Test Point InformationMain 1/4 Schematic Diagram L2401SCM1Main 2/4 Schematic Diagram L2401SCM2Main 3/4 Schematic Diagram L2401SCM3Main 4/4 & CRT Schematic Diagram Main 4/4 Ref No PositionMain CBA Top View BL2700F01012-1Main CBA Bottom View Q1511 Q1511 Collector Base CRT CBA Top ViewQ1521 Q1521 Collector Base Q1531 BaseWaveforms WF4WF9 CollectorWiring Diagram L2401WIPin Signal Name Function IC PIN FunctionsIC111 TV Micro Controller AFT Voltage Input White Balance AdjustmentJudgement Degaussing Coil ControlExploded Views Cabinet11-1 11-2 L2401CEX Packing X-2 X-3 Tape Packing Tape 11-3 L2401PEXMechanical Parts List Comparison Chart of Models and Marks20040405 12-1 L2401CA Electrical Parts List 20040405 13-1 L2401EL20040405 13-2 L2401EL Electrolytic CAP .33∝F/50V M CE1JMASDLR33Connectors 20040405 13-3 L2401EL20040405 13-4 L2401EL ICS20040405 13-5 L2401EL Transistor 2SC2120-YTPE220040405 13-6 L2401EL Switches 20040405 13-7 L2401EL20040405 13-8 L2401EL RCA Jack 1P AV-8.4-9W6420FE/EWF2004 L2401UB/L2404UE
Top Page Image Contents