Grundig Chassis G1 Servicehandbuch Seite 12

GRUNDIG Service
Alignment
All adjustment controls not mentioned in this description are adjusted during production and must not be re-adjusted in the case of repairs.
Call up the service menu:
Call up the dialogue line:
Change setting in the dialogue line:
Back to previous menu:
Exit menu:
Service menu for the dealer:
Measuring instruments: 100MHz oscilloscope with 10:1 test probe, colour test pattern generator.
Service work after changing the ...
... Display, Adjustment 1, 4
... Chassis Board, Adjustment 1...3, 5
... M2 Board, Adjustment 1, 4
... Tuner, Adjustment 2, 3
Alignment
1. Display Type Call up the "Display type" menu via "EASY DIALOG" –>
"Installation" –> "Dealer service menu" –> Code number
"8500" –> "Hardware equipment".
2. Terr. Tuner Type Call up the "Terrestrial tuner" menu via "EASY DIALOG" –>
"Installation" –> "Dealer service menu" –> Code number
"8500" –> "Hardware equipment".
3. Tuner AGC Connect the 100MHz oscilloscope to the tuner contact 10 or
11 and to tuner ground.
Feed in a test pattern (sound carrier switched off) via the
aerial, 70...80dBµV.
Call up the "AGC setting" menu via "EASY DIALOG" –>
"Installation" –> "Dealer service menu" –> "8500" –> "Spe-
cial functions".
4. White level Feed in a grey scale test pattern with burst.
White balance:
Contrast:
Colour contrast:
Screen brighness:
Tilt angle:
Call up the "White balance" menu via "EASY DIALOG" –>
"Installation" –> "Dealer service menu" –> "8500" –> "Picture
settings".
5. Screen geometry Switch the set to channel position "AV06" or "AV07" and feed
VGA in a geometry test pattern via the VGA or DVI socket.
Call up the "Reset" menu via "EASY DIALOG" –> "Installation"
–> "Dealer service menu" –> "8500" –> "Screen geometry".
Button " i " (EASY DIALOG)
Buttons "P+" / "P-" –> "OK"
Buttons " " / " " –> "OK"
button "blue"
Button " i "
Code no. "8500"
Preparations
Central position
Maximum
Mean value
Mean value
Mean value
2 - 2
Alignment procedure
Select the appropriate display type.
Select the appropriate tuner type.
Set to 300-350mV .
pp
Adjust the values for red, green and blue so that the picture
becomes achromatic.
Using the controls for Height, Width, Vert. shift. and Horiz.
shift, move the test pattern into the centre of the picture
screen, and then adjust a symmetrical display reading.
Saving:
The set value is saved by pressing the "yellow" button.
The picture geometry adjusts itself to the last saved value
when switching the TV set on again.
Chassis G1