DOWNLOAD Sony KV-28DX30U Service Manual ↓ Size: 24.03 MB | Pages: 86 in PDF or view online for FREE

25

1.

Input a Phillips pattern.

2.

Set the picture control to minimum.

3.

Enter into the ‘Picture Adjustment’ service menu.

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 that contains a small 100% area on a black 
background.

2.

Set the picture control to maximum.

3.

Connect an oscilloscope to Pin 3 of CN301 [A Board].

4.

Enter into the ‘Picture Adjustment’ service menu.

5.

Adjust the ‘Sub-contrast’ data to obtain a black to white 
amplitude of 2.20V.

1.

Receive a PAL colour bar video signal.

2.

Connect an oscilloscope to Pin 3 of CN301 [A Board].

3.

Enter into the ‘Picture Adjustment’ service menu.

4.

Adjust the ‘Sub-colour’ data so that the Cyan, Magenta and 
Blue colour bars are of equal height as indicated below.

The data indicated in the ‘TV STATUS’ table is
dependant on destination, screen size and country.

IC STATUS (CXA203452 / CXA2040)

CXA2034526

H lock

1

IKR

1

V NG

0

X-RAY

0

Colour system

7

CV1 sync

0

CXA2040

 

Sync sep

0

S1 mode pin

01

S2 mode pin

01

PORT EXPANDER

Power Good

1

TUNER

 

Tuner status

01101011

TV STATUS BE3E

Text system

C TEXT- 2

Dolby Enabled

YES

DSP Present

NO

Text language set

WEST

Menu language set

WEST

Destination

UK

Ageing

DISABLED

Auto Shut Off

ENABLED

Size

28/32

Colour trap sw

ALL

Velocity mod

ON

AFT STATUS

Digital RF

YES

Attenuation

OFF

Micro/Jungle

SDA30C263/MSP3452

Dynamic Convergence

Range

Adj Off  - 42

H stat

Adj  Off - 63

H amp l

Adj  Off - 63

H amp r

Adj  Off - 63

Up Y

Adj  Off - 63

Low Y

Adj  Off - 63

Y up l

Adj  Off - 63

Y up r

Adj  Off - 63

Y low l

Adj  Off - 63

Y low r

Adj  Off - 63

Mbow up l

Adj  Off - 63

Mbow up r

Adj  Off - 63

Mbow low l

Adj  Off - 63 

Mbow low r

Adj  Off - 63

V Stat

Adj  Off - 63

Same Level

B-Out Waveform

26

1.

Input an off air signal of between 60-100dBuV / 75 ohm 
terminated, via the tuner socket.

2.

Enter into the ‘IF Adjustment’ service mode [i.e ‘TT59’] to fix 
the I.F frequency to 39.9MHz.

3.

Enter into the service mode and select ‘Current TV status’.

4.

Adjust the I.F coil [LV01] until the ‘AFT Status’ indicates a 
‘Window’ condition.

1.

Receive a signal of 63dBuV / 75 ohm terminated, via the tuner 
socket.

2.

Measure the voltage at test point 1 [A Board].

3.

Adjust RV01 control to obtain a voltage of 3.0V +/- 0.3V.

1.

Enter into the ‘Geometry Adjustment’ service menu.

2.

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

TUNER / IF

TP1

   GEOMETRY ADJUSTMENT

V size

Adj

V position

Adj

S Correction

Adj

V Linearity

Adj

H size

Adj

H position

Adj

Pin Amp

Adj

Pin Phase

Adj

AFC Bow

Adj

AFC Angle

Adj

EHT V

1

EHT H

0

Lo Corn Pin

Adj

Up Corn Pin

Adj

V SIZE

V LIN

S CORRECTION

V CENTRE

H SHIFT

H SIZE

PIN AMP

TILT

CORNER PIN

V ANGLE

LV01        RV01

27

00

Cancel Test mode

01

Picture Maximum

02

Picture Minimum

03

Volume & Headphone Volume 35%

04

Volume & Headphone Volume 50%

05

Volume & Headphone Volume 65%

06

Volume & Headphone Volume 80%

07

Ageing mode Enable/Disable

08

Shipping Condition

09

Display TV status

11

Sub Picture adjustment

12

Sub Colour adjustment

13

Sub Brightness adjustment

14

Text H-Position adjustment

15

Rotation Test

21

Destination A/D (East Menu/West Text)

22

Destination L (West Menu/West Text)

23

Destination E (West Menu/West Text)

24

Destination U (West Menu/ West Text)

25

Destination D (East Menu/Greek Text)

26

Destination B (East Menu/West Text)

27

Destination K (East Menu/East Text)

28

Destination R (Russian Menu/Russian Text)

31

Toggle Auto Shutoff Disable

32

Toggle Bit Error Rate Display

33

Toggle Terminal Debug Mode

38

Default Dynamic Convergence Settings

41

Re-initialize the NVM

42

Re-initialise geometry settings

43

Default Programme info in NVM with factory settings

44

Default favourite pages to 100,101,102 and 103

45

Switch off all Parental locks

47

Default MSP settings

48

Set NVM as Non-virgin

49

Set NVM as virgin

50

No function

51

Dolby Pro-Logic On, Volume 90%

52

Noise On Left Speaker

53

Noise On Right Speaker Only

54

Noise On Centre Speaker Only

55

Noise On Surround Speaker Only

56

Set Colour to Minimum and Picture to Maximum

57

Set Colour and Picture to Minimum and Adjust Sub-
Brightness

58 
 -
60

No function

61

N-board Reset

62

Toggle the 3.3v regulator on A2-board

63

Toggle Attenuation switch on Port Expander

64

Smart Link Test- Toggle the Smart Link pin 50 times

66

No function

67

No function

68

Pre-set AV Labels

69

No function

70

No function

71

Select Compact Text/Compact Text-2

72

Balance Left/Right (press 

 key for balance left,  

for balance right, and 

 for centre balance)

73

Dual Sound Headphones ( 

key for A,  

  key for B)

74

Dual Sound Speakers ( 

key for A,  

  key for B)

75

DSP Bypass

76

Dolby Enabled/Disabled toggle

77

Setup trap switch

78

Set Screen Size

79

Wide Setup

80

No function

81

Velocity Mod ON

82

Velocity Mod OFF

83

Special Picture Mode - Personal mode, reset & 
brightness = 0

84

Text Interlace odd (Non interlace mode = 3)

85

Text Interlace even (Non interlace mode = 2)

86

Auto Cut Off ENABLE

87

Auto Cut Off DISABLE

88

Diagnostics OFF

89

Diagnostics ON

90

No function

91

Clear & disable OSD

92

Enable OSD

93

D/K Nicam Enable

94

D/K Nicam Disable

95

Reset language select menu on power up

96

Set all programme labels to default

97

Toggle MHEG Mode

‘TT’ Mode is available by pressing the Test key twice.  It is exited by pressing 0 twice, or by pressing the Test key, or by pressing the TV key, or by 
switching the set into standby.
The functions described below are available by pressing 2 digits:

28

‘T’ Mode is available by pressing the Test key once.  It is exited by 
pressing the Test key twice, or by pressing the TV key, or by switch-
ing the set into standby.
The functions described below are available by pressing the indicated 
key :

Key

T Mode Function

Volume +

Volume Maximum

Volume -

Volume Minimum

Picture +

Picture Maximum

Picture -

Picture Minimum

Colour +

Colour Maximum

Colour -

Colour Minimum

Brightness +

Brightness Maximum

Brightness -

Brightness Minimum

Hue +

Hue Maximum

Hue -

Hue Minimum

Sharpness +

Sharpness Maximum

Sharpness -

Sharpness Minimum

Balance Left

Balance Full Left

Balance Right

Balance Full Right

Treble +

Treble Maximum

Treble -

Treble Minimum

Bass +

Bass Maximum

Bass -

Bass Minimum

Analogue +

Select Analogue Value Maximum

Analogue -

Select Analogue Value Minimum