TX-28LB10C, TX-28LB10S - Panasonic TV Service Manual (repair manual). Page 9

(The figures below are nominal and used for representative purposes only.)
1.  Set the Bass to maximum position, set the Treble to minimum position, set the Volume to minimum then 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.

Settings / Special features

Horizontal Position

H-Pos

061

Optimum setting.

Vertical Position

V-Pos

005

Optimum setting.

Horizontal Amplitude

H-Amp

055

Optimum setting.

Vert. Amplitude

V- Amp

054

Optimum setting.

EW-amplitude

EW-Amp1

 - 030

Optimum setting.

Lower corner

Lower corner

007

Optimum setting.

Trapezium-comp

Trapez 1

047

Optimum setting.

Upper corner

Upper corner

006

Optimum setting.

Vertical Linearity

V-Lin

006

Optimum setting.

Vertical Symmetry

V-Sym

002

Optimum setting.

Angle

Angle

000

Optimum setting.

Bow

Bow

005

Optimum setting.

DVCO

DVCO

 - 005

Receive a PAL Colour Bar Pattern. For
DVCO alignment press "Blue" button, wait
until the colours are changing slowly and
press "STR".

Cut-off DC

Cut-off

0100

Ug2 Test

Ug2

0095 ÷ 0105

O.K.

Connect an oscilloscope to the blue
cathode, adjust "Screen" value until the
black level is 155V±3V. Remove the
oscilloscope.

Highlight

Lowlight

High 0396 0357 0374
Low

0117 0132 0112

Optimum setting.

Sub-Brightness

Sub-Brightness

000

Optimum setting.

Black Level

155V ± 3V

GND