Grundig CUC 1836 Service Manual page 33

CUC 1836 / 1929
Alignment
1.11 PIP position Feed in a transmitter picture.
Press and hold the "PIP" button on the remote control while
switching on with the mains button.
1.12 Picture With button " " call up "Geometry" via "DIALOG CENTER"
geometry –> "SERVICE"
Number "8500"–> (menu guide).
Feed in a test generator pattern or a standard test pattern
into the aerial socket.
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:
With button " " call up the "Reset" menu via "DIALOG
CENTER" –> "SERVICE" –> "For authorised dealer" –>
Code Number "8500" –> (menu guide), confirm with "OK".
1.12.1 VGA Switch the TV to "AV4" programme position and feed in a
Picture geometry pattern via VGA socket.
geometry With button " " call up the "Reset" menu via "DIALOG
CENTER" –> "SERVICE" –> "For authorised dealer" –>
Code Number "8500" –> (menu guide), confirm with "OK".
1.13 Adjustment of The bridge coil L53074 is adjusted at the factory and should
the bridge coil not be readjusted any more.
L53074 With button " " call up the "Geometry" menu via "DIALOG
CENTER" –> "SERVICE" –> "For authorised dealer" –>
"Code Number 8500" –> (menu guide)
Set the horizontal amplitude (width) to minimum.
Oscilloscope channel 1: collector T53001.
Oscilloscope channel 2: cathode D53072.
1.14 Line Select the convergence test pattern.
sharpness Select the 16:9 aspect ratio for 16:9 TV models.
Contrast ( ) to maximum.
(without focus Set the brightness (
block) test pattern is just brightening.
1.14.1 Line Select the convergence test pattern.
sharpness Select the 16:9 aspect ratio for 16:9 TV models.
Contrast ( ) to maximum.
(with Set the brightness (
focussing test pattern is just brightening.
board)
1.14.2 Line Select the convergence test pattern.
sharpness Select the 16:9 aspect ratio for 16:9 TV models.
Contrast ( ) to maximum.
(with focus Set the brightness (
block) test pattern is just brightening.
1.15 Noise reduc- Call up the "Noise reduct." menu with the red key via
tion on per- "Picture settings" –> "OK Personal" –> (menu guide).
programme
basis
all pro- With button " " call up the "Noise reduct." menu via "DIALOG
grammes 1...99 CENTER" –> "SERVICE" –> (menu guide).
GRUNDIG Service
Preparations
–> "For authorised dealer " –> Code
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Alignment Process
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.
With or button, move the picture into the centre of the
raster. Re-adjust the horizontal amplitude according to the
test pattern.
Store:
Call up "End without memory" and change to "End with
memory" with 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 the
setting if necessary.
When storing the VGA geometry data set is entered into IC80070.
Check the pulse width of the oscillograms and correct it if
necessary with coil L53074 so that it is the same for both
oscillograms.
With the focus control FOC on the picture tube panel adjust
the vertical lines about 5cm from the right and left picture
edge for minimum horizontal width.
With the focus control FOC on the picture tube panel adjust
the horizontal lines in the middle of the picture for minimum
vertical width.
With the focus control on the focussing board adjust the
vertical lines about 5cm from the right and left picture edge
for minimum horizontal width.
With the focus control FOCUS 1 on the focus block, adjust
the horizontal lines in the middle of the picture for minimum
vertical width.
The sharpness in the upper edge must not be worse than in
the middle of the picture. Take the average if necessary.
Subsequently, with the focus control FOCUS 2 on the focus
block, adjust the vertical lines about 5cm from the right and
left picture edge for minimum horizontal brightness.
With the buttons the noise reduction ("Off", "Auto",
"Low") can be changed for each programme. The setting
is stored when terminating the menu.
With the buttons the noise reduction can be switched
on or off simultaneously for all programmes 1...99.
Abgleich / Alignment
and buttons and
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