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4.  Receive a Window pattern.
5.  Set the controls :-

Brightness

Minimum

Contrast

Minimum

Volume

Minimum

Confirm the following voltages.

A - Board
A1 Pin2

7.5

± 0.5V

IC1252 Pin2

2.5

±

0.25V

A1 Pin12

-20

±

0.5V

IC1251 Pin3

3.3

+0.3 / -0.2V

A1 Pin16

20

±

0.5V

IC3302 Pin3

12

±

0.6V

A2 Pin15

30

±

0.5V

IC2707 Pin3

8

±

0.4V

A2 Pin6

15

±

0.5V

L2707

(IC2708) 9

±

0.4V

A3 Pin4

15

±

0.5V

L2704

(IC2706) 5

±

0.2V

A3 Pin2

-15

±

0.5V

L2716

(IC2705) 3.3

±

0.2V

L2717

(IC2709) 3.3

±

0.2V

D – Board
TPD8-GND

7.5

±

0.5V

TPD9-TPD11

38.5

±

2V

TPD10-GND

15.5

±

1V

TPD13-GND

14.5

±

1V

TPD15-GND

144.8 ±

1V

TPD32-GND

209

±

10V

C864-GND

-15.5 ±

1V

D2 Pin15-GND

31

±

1V

1. Receive a Window pattern.
2. Degauss the tube externally.
3. Set the TV into Service Mode 1.
4. Select Sub brightness mode.

To adjust Cutoff connect an oscilloscope to the Blue cathode. Adjust "Cutoff"
value using the "Yellow" and "Blue" buttons until the black level is 170V ± 5V,
press "STR" to store the value. Remove the oscilloscope.
Select Highlight/Lowlight mode press "5" to collapse the screen and adjust the
screen “VR” until the display is just visible, press "5" to return to service mode.
Using the "Yellow" and "Blue" buttons adjust until optimum picture white
balance is achieved, press "STR" to store the value. Select Sub Brightness
mode and adjust until optimum picture brightness is achieved.

Self-Check is used to automatically check the bus lines and hexadecimal code of the TV set.
To get into Self-Check mode press the down (-/v) button on the customer controls at the front of the TV set, at the same time
pressing the STATUS button on the remote control, and the screen will show: -

To exit Self-Check, switch off the TV set at the power button.

If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".

Factory use only

Note: All waveforms have been taken using a standard colour bar pattern.

32

µ

S

0.8V

R - Y
IC1315 Pin 38

B - Y
IC1315 Pin 39

32

µ

S

0.8V

Video Out
IC3001 Pin 56

2.2V

64

µ

S

R - Out
IC1315 Pin 23

32

µ

S

4V

G - Out
IC1315 Pin 21

4V

32

µ

S

B - Out
IC1315 Pin 19

4V

32

µ

S

VFLB
IC451 Pin 6

1V

20mS

32

µ

S

4V

H - Drive
A3 Pin 10

Vert Drive
A44 Pin 24

10mS

0.9V

HFLB
A3 Pin 11

32

µ

S

4V

Vert Out
IC451 Pin 3

10mS

88V

SVM Out
A44 Pin 43

1V

32

µ

S

E/W Out
IC501 Pin 1

32

µ

S

8V

Luminance In
IC1315 Pin 37

0.9V

32

µ

S

(The figures below are nominal and used for representative purposes only.)
1.  Set the Bass to maximum position, set the Treble to minimum position, press the down button (- / v) on the customer

controls at the front of the TV and at the same time press the INDEX button on the remote control, this will place the TV
into the Service Mode.

2. Press 

the 

RED / GREEN buttons to step up / down through the functions.

3. Press 

the 

YELLOW / BLUE buttons to alter the function values.

4. Press 

the 

STR button after each adjustment has been made to store the required values.

5.  To exit the Service Mode, press the "N" button.

Horizontal Position

H – Pos

97

Optimum setting.

Vertical Position

V – Pos

111

Optimum setting.

Horizontal Amplitude

H – Amp

86

Optimum setting.

Vertical Amplitude

V – Amp

134

Optimum setting.

Parabola

Parabola

26

Optimum setting.

Trapezoid

Trapezoid

124

Optimum setting.

Horizontal Parallel

H – Parallel

13

Optimum setting.

Vertical Linearity

V – Linear

34

Optimum setting.

Top Corner

Top – Corner

20

Optimum setting.

Bottom Corner

Bottom – Corner

20

Optimum setting.

Vertical Symmetry Correction

V – S – Correct

9

Optimum setting.

Center Correction

C – Correct

10

Optimum setting.

DAF - Phase

DAF – Phase

205

Optimum setting.

Highlight

Lowlight

High

0144

0126

0128

Low

0331

0340

0384

Optimum setting.

Sub-Brightness

Sub-Brightness

144

Optimum setting.

Video Gain 2

Video Gain 2

157

Optimum setting.

Splitter Gain (Tuner)

SPL. Gain

0

Optimum setting.