Grundig Atlanta SE 7250 PIP/DOLBY Service Anleitung Seite 41

CUC 1832 / 1930 / 1931
Alignment
7. White balance Feed in a grey scale black/white test pattern with burst.
Set white balance to mid-position.
Contrast (
Colour contrast (
Screen brightness (
Switch off "Perfect Clear"
SETTINGS" –> "OK" –> Personal values).
Call up the white balance menu with button " " (DIALOG
CENTER) –> "OK" –> "SERVICE" –> "OK" –> "Only for the
retailer" –> "OK" –> Code Number "8500" –> "White
balance" –>"OK" –> (menu guide).
8. Type of Call up the tube type menu with button " " (DIALOG
picture tube CENTER) –> "OK" –> "SERVICE" –> "OK" –> "Only for the
retailer" –> "OK" –> Code Number "8500" –> "Tube type" –>
"OK" –> (menu guide).
9. Colour match Call up the colour match menu with button " " (DIALOG
CENTER) –> "OK" –> "SERVICE" –> "OK" –> "Colour
match" –> "OK" –> (menu guide).
10. PIP position Feed in a standard test pattern.
Press and hold the "PIP" button on the remote control while
switching on with the mains button.
11. Picture Call up the geometry menu with button " " (DIALOG CEN-
geometry TER) –> "OK" –> "SERVICE" –> "OK" –> "Only for the
retailer " –> "OK" –> Code Number "8500"–> "Geometry"
–> "OK" –> (menu guide).
Call up the internal "Lattice" test pattern or feed in the
geometry test pattern.
Attention: The "Line shift" alignment influences the line
phase. Before this adjustment, set the horizontal amplitude
to minimum and if necessary correct the raster position
with the "H-Shift" plug.
Reset:
The "Reset" menu contains:
- either the optimum picture geometry data entered in the factory
- or the average data set read out from the ROM if the TV
has been switched on with the emergency data set.
On misalignment, these basic values can be re-loaded at
any time as follows:
Call up the reset menu with button " " (DIALOG CEN-
TER)–> "OK" –> "SERVICE" –> "OK" –> "Only for the
retailer " –> "OK" –> Code Number "8500"–> "Reset" –>
"OK" –> (menu guide).
11.1 VGA picture Switch the TV to "AV5" programme position or TV models
geometry with two AV sockets to "AV4" and feed in a geometry test
pattern via the VGA socket.
Call up the geometry menu with button " " (DIALOG CEN-
TER) –> "OK" –> "SERVICE" –> "OK" –> "Only for the
retailer " –> "OK" –> Code Number "8500"–> "Geometry"
–> "OK".
12. Adjustment of The bridge coil L53074 is adjusted at the factory and
the bridge coil should not be readjusted any more.
L53074
(chassis) Call up the geometry menu with button " " (DIALOG CEN-
TER) –> "OK" –> "SERVICE" –> "OK" –> "Only for the
retailer " –> "OK" –> Code Number "8500"–> "Geometry"
–> "OK".
Set the horizontal amplitude (width) to minimum.
Oscilloscope channel 1: collector T53001.
Oscilloscope channel 2: cathode D53072.
GRUNDIG Service
Preparations
{
) to maximum.
i
) to mid-position.
v
) to mid-position.
(red key –> "PICTURE
Alignment Process
With the buttons set the values for VG and VB so that
the picture becomes achromatic.
Use the "?" key to call up the default values stored in
IC80070.
The setting is stored when pressing the "OK" button.
With the buttons select the type of picture tube (T =
Toshiba, P = Philips).
The selected type is stored when terminating the menu.
With the buttons optimize differences between Y and
chroma delay (on per-programme basis).
The setting is stored when terminating the menu.
Change the PIP position with the
store with "OK".
Via the menu guide, select the geometry values for the
vertical deflection first, then set the values for the horizontal
deflection.
Subsequently, move the picture into the centre of the raster
using the or button. Re-adjust the horizontal amplitude
according to the test pattern.
Store:
Call up the dialogue line "End" and change to "With memory"
using the or button .
Store the setting with the "OK" button.
Whenever the TV is switched on the picture geometry is set
to the value stored last.
Check the geometry via the menu guide and correct it if
necessary.
When storing, the VGA geometry data set is entered into IC80095
(processor module).
Check the pulse width of the oscillograms and correct it if
necessary with coil L53074 so that it is the same for both
oscillograms.
Abgleich / Alignment
and buttons and
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