Sony AE6BA - Alignment

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Y-splitting axis correction magnet

V STAT convergence magnet

BMC (Hexaploe) magnet

Purity magnet

a-d: screen-cornerconvergence defect

a b

c d

a

b

d

Permalloy AssyX-4387-214-1

c

Install the permalloy assemblyfor the area that needs correcting.

Convergence adjustment with permalloy

Focus

Screen

3-3. Focus Adjustment

1. Receive a television broadcast signal.2. Normalize the picture setting.3. Adjust the focus control located on the flyback transformer to

obtain the best focus at the centre of the screen.Bring only the centre area of the screen into focus, the magenta-ring appears on the screen. In this case, adjust the focus tooptimize the screen uniformly.

3-4. Screen (G2), White Balance

[Adjustment in the service mode using the remotecommander]

G2 adjustment

1. Input a dot signal from the pattern generator.2. Set the Picture, Brightness and Colour to minimum.3. Apply 175V DC from an external power supply to the R, G

and B cathodes of the CRT.4. Whilst watching the picture, adjust the G2 control [SCREEN]

located on the flyback transformer to the point just before theflyback return lines disappear.

Layout of each control

Note : If you are unable to adjust the corner convergence properly,this can be corrected with the use of permalloy magnets.

1. Input an all-white signal from the pattern generator.2. Program the Remote Commander for operation in Service Mode.

[ See Page 22 ].3. Enter into the ‘Service Mode’ by pressing ‘AUX/VIDEO’ button

twice and ‘MENU’ on the Service Commander.4. Select ‘Service’ from the on screen menu display and press

‘Right Arrow’.5. The ‘Service’ menu will appear on the screen.[See Page 22]6. Select ‘Picture’ from the on screen menu and press right arrow.7. Select ‘Picture settings’ from the on screen menu and press right

arrow and set the ‘Contrast_Max’ to MAX.8. Select ‘White Balance’ from the on screen menu and press right

arrow.9. The ‘White Balance’ menu will appear on the screen.10. Set the ‘Normal_PAL_RD’ to 465.11. Adjust the ‘Normal_PAL_GD’ and the ‘Normal_PAL_BD’ so

that the white balance becomes optimum.12. Select ‘Picture settings’ from the on screen menu and press right

arrow and set the ‘Contrast_Min’ to MIN.13. Set the ‘Normal_PAL_RC’ to 121.14. Adjust the ‘Normal_PAL_GC’ and the ‘Normal_PAL_BC’ with

the left and right buttons on the commander so that the whitebalance becomes optimum.

15. Press the ‘OK’ button to write the data for each item.

White balance adjustment for TV mode

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4-1. Electrical Adjustments

Service adjustments to this model can be performed using thesupplied remote Commander RM-945.

SECTION 4 CIRCUIT ADJUSTMENTS

Programming the Remote Commander forOperation in Service Mode

Setting the TV into Service Mode

1. Program the remote commander for operation in ServiceMode as described above.

2. Turn on the TV main power switch.

3. Press the ‘aux/video’ standby button on the remotecommander twice.‘TT ’ will appear in the upper right corner of the screen.Other status information will also be displayed.

4. Press ‘MENU’ on the remote commander to obtain thefollowing menu on the screen.

5. Move to the corresponding adjustment item using theup or down arrow buttons on the Remote Commander.

6. Press the right arrow button to enter into the required menu item.7. Press the ‘aux/video’ button on the Remote Commander to quit

the Service Mode when all adjustments have been completed.

Note :· After carrying out the service adjustments, to prevent the

customer accessing the ‘Service Menu’ switch the TV setOFF and then ON.

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3. To return the remote commander to normal operation moderepeat step 1. then press 00000. The TV LED should light.The remote commander is now set to normal mode.

1. Press and hold the left Mode Select buttonuntil the VCR and DVD LED’s flash.

2. Press 99999. The TV LED should light.The remote commander is now set toService Mode.

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Sub Brightness Adjustment

1. Input a Monoscope pattern.2. Program the Remote Commander for operation in Service Mode.

[ See Page 22 ].3. Press ‘AUX/VIDEO’ ‘AUX/VIDEO’ 13 on the Remote

Commander.4. Adjust the ‘Sub-Brightness’ data so that there is barely a

difference between the 0 IRE and 10 IRE signal levels.

1. Input a video signal that contains a small 100% white area on ablack background.

2. Connect an oscilloscope to Pin 10 of J7330 [C Board].3. Program the Remote Commander for operation in Service Mode.

[ See Page 22 ].4. Adjust the Sub-Contrast

[ Using ‘AUX/VIDEO’ ‘AUX/VIDEO’ ‘11’ ] to obtain a voltage of 114 +0/- 5V.

Sub Contrast Adjustment

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- 24 -

Test Mode 2 is available by programming the Remote Commander foroperation in Service Mode [ As shown on Page 22 ] then pressing the‘AUX/VIDEO’ button twice, OSD ‘TT’ appears. The functionsdescribed below are available by selecting the two numbers. Torelease ‘Test mode 2’, press 00, or switch the TV set into Stand-bymode.

4-2. TEST MODE 2:

1. Program the Remote Commander for operation in Service Mode.[ See Page 22 ] and enter into the ‘Geometry’ service menu,Wide mode adjustment.

2. Select and adjust each item in order to obtain the optimum image.

Deflection System Adjustment

Sub Colour Adjustment

1. Receive a PAL colour bar signal.2. Connect an oscilloscope to Pin 5 of CN7331 [C Board].3. Program the Remote Commander for operation in Service Mode.

[ See Page 22 ].4. Adjust the ‘Sub Colour’

[ Using ‘AUX/VIDEO’ ‘AUX/VIDEO’ ‘12’ ] so that the Cyan, Magenta and Blue colour bars are of equal levels as indicated

below.

Same Level

B-Out Waveform

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Sony AE6BA - Alignment

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