Service
Menu
Calling up and working with the service menu
– Press the »AV/OK« and »POWER« buttons on the TV set at the same time.
The FACTORY menu (service menu) is displayed on the picture screen.
– Select the desired alignment function (row) using
the »P–« or »P+« button on the TV set or on the remote control.
– Activate the alignment or change the settings using the »L–« or »L+« button on the set, or the » + « or »
- « button on the remote control.
– Call up the main menu using the »i« button.
Exiting the service menu
– Repeatedly press the »i«
button on the set or on the remote control until the menu disappears, or press
the »OK«
button on the remote control.
Alignment functions
Note: The functions of the FACTORY ADJ menu
item are relevant for the alignment. Via the FACTORY ADJ menu item, the values
for the MX88L281 1, AD9884 1, AD9884 2, and VPC3230 are automatically adjusted.
The values indicated for MX88L281 1, AD9884 1, AD9884 2, VPC3230 serve as
medium and basic values and are to be changed only if required.
FACTORY ADJ
CLOCK DELAY
– Connect a computer with installed
"Acrobat Reader" to the SVGA socket.
Observe the setting of the graphics card.
– Call up the "1bit" test pattern in full picture mode of
"Acrobat Reader" on the computer.
- Change the setting (typ. 15) until the picture is stable and the vertical
lines are no longer fringed.
AUTO COLOR GAIN
– Connect a computer with installed
"Acrobat Reader" to the SVGA socket.
Observe the setting of the graphics card.
– Call up the "Colorbar" test pattern
in full picture mode of "Acrobat Reader" on the computer.
If the achromatic regions in the bottom part of the test pattern should be
coloured, repeat the alignment.
– After activating the alignment function, the alignment is carried out
automatically.
OPTION – X3 – INVERT
– For the OPTION function, "X3 –
INVERT" must be set.
TTX Local: PAN EUROPE
– For the TTX Local function, the
following settings for country-specific
Teletext special characters are possible:
PAN EUROPE
CYRILLIC-RUSS
GREEK
ARAB
CYRILLIC-UKRA
TTX E/W: WEST
– For the TTX E/W function, it is
possible to select between the
country-specific Teletext settings EAST and WEST.
MX88L281 1 (IC601)
– CONTRAST 25 (0…31)
– BRIGHT 15 (0…31)
– EDGE FILTER 0 (-63…+63)
– CLOCK DELAY 15 (0…15)
– EXPAND ON
AD9884 1 (IC360)
Note: this function can only be called up in PC mode.
– RED GAIN 127 (0…255)
– GREEN GAIN 127 (0…255)
– BLUE GAIN 127 (0…255)
– RED BIAS 31 (0…63)
– GREEN BIAS 31 (0…63)
– BLUE BIAS 31 (0…63)
– AUTO TRACKING (automatic function)
CLOCK 125 (0…250)
PHASE 15 (0…31)
– AUTO COLOR GAIN (see Point 3.1.2)
AD9884 2 (IC360)
Note: this function can only be called up in PC mode.
– INIT VCO CURRENT (automatic function)
SUB C VCO 1 (0…3)
SUB C CHG CURRENT 4 (0…6)
AD3230 (IC301)
Note: this function can only be called up in TV mode.
– CONTRAST 52 (0…63)
– BRIGHTNESS 9 (0…15)
– PEAKING 0 (0 / 1)
– CIP CONTRAST 7 (0…15)
– CIP BRIGHT 7 (0…15)
Block Diagram
Block diagram of the main board
Schematic diagram
