Sony KV-T29SN81 service manual Focus Adjustment, G2 Screen and White Balance Adjustments

Page 18

KV-T29SN81

RM-870

3-3. FOCUS ADJUSTMENT

Adjust FOCUS control on the flyback transformer for the best

focus.

Focus

Note: Screen VR is not use.

a. AN ITEM OF ADJUSTMENT

Item

Adjustment

Initial DATA

Note

number

item

 

 

09

RDR

25

WHITE POINT R

0A

GDR

20

WHITE POINT G

0B

BDR

20

WHITE POINT B

b.METHOD OF CANCELLATION FROM SERVICE MODE

Set the standby condition (Press [POWER] button on the commander) and then press [POWER] button again, hereupon it becomes TV

mode.

c. METHOD OF WRITE FOR MEMORY

1)Set to Service Mode.

2)Press 1(UP) and 4(DOWN) to select an item of adjustments.

3)Press [MUTING] button and it will indicate WRITE on screen.

4)Press - button to write into memory.

d. MEMORY WRITE CONFIRMATION METHOD

1)After adjustment, pull out the plug from AC outlet, and then plug into AC outlet again.

2)Turn the power switch ON and set to Service Mode.

3)Call the adjusted items again, confirm they were adjusted.

DATA

09 RDR 1 F SERVICE

Adjustment Item

Item number

09 RDR 1 F

WRITE

 

 

MUTING

 

0

Executes the writing

3-4. G2 (SCREEN) AND WHITE BALANCE

ADJUSTMENTS

1. G2 (SCREEN) ADJUSTMENT (RV701)

1)Set the PICTURE and BRIGHTNESS to normal.

2)Put to VIDEO input mode without signals.

3)Connect R, G, and B of the C board cathode to the oscilloscope.

4)Adjust G2 (RV701) volume to the value below.

180 V DC

0 V

2. WHITE BALANCE ADJUSTMENTS

1)Set the Service Mode.

2)Input an entire white signal.

3)Set the PICTURE to maximum.

4)Select RDR(09) with 1 and 4 , and then set the level to 25 with 3 and 6 .

5)

Select GDR(0A) and BDR(0B) with 1 and 4 and adjust

 

the level with 3 and 6 for the best white balance.

6)

Write into the memory by pressing [MUTING] → then - .

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Contents Trinitron Color TV Specifications KV-T29SN81Disassembly Table of ContentsDiagrams Electrical Parts List SET-UP AdjustmentsSelf Diagnosis Function Flickering FrequencySection General Connections Presetting channels Adjusting the picture and sound Selecting a stereo or bilingual program Troubleshooting Section Disassembly Board Removal Service PositionRear Cover Removal F1 Board Removal Replacement of Parts Demagnetization Coil Removal Replacement of Light Guide Power Button∙ Removal of ANODE-CAP ∙ Removing Procedures Picture Tube RemovalSection SET-UP Adjustments Beam LandingConvergence Horizontal and Vertical Static ConvergenceBlue Red Neck assy VM board Dynamic Convergence Adjustment Preparation Focus Adjustment G2 Screen and White Balance AdjustmentsSection Circuit Adjustments Adjustments with CommanderAdjustment Method Adjustment Item Table No OP0 * Input data are different according to models Item Number 00 Memo Semiconductors EL1Z GP08DSection Exploded ViewChassis Electrical Parts List PLUG, Connector 6P PIN, Connector 4PPLUG, Connector 5P CONNECTOR, Board to Board 12PDiode EL1Z Diode RU4DSDiode D1NL20-TA Diode LNK0220022GTransistor 2SC3209LK Transistor 2SC2410SNTransistor 2SA1091-O Transistor 2SC4927-01Metal Chip WirewoundCarbon FusibleVariable Resistor RES, ADJ, Carbon 2.2M SwitchSolid RES, ADJ, Carbon 470KSawf Transformer REF. NO. Part no Description Remark Spark GAPGAP, Spark Surface Wave Filter TRANSFORMER, Line FilterIC CXA1110BS Carbon Coil SwitchFilter IC MSP3410D-PP-B4SOCKET, CRT Coil Transistor 2SC2611Carbon Variable Resistor FUSE, TIME-LAG 4A/250V Resistor CLIP, Fuse CapacitorFuse Diode RD3.6M-B2Transistor 2SD774-34 ConnectorPLUG, Connector 7P Crystal VibratorTransistor 2SA1837 IC NJM2903DIC NJM2904D Coil Transistor 2SC4793Battery COVER, Remote Commander Accessories and Packing MaterialsRemote Commander Miscellaneous COIL, Demagnetization