Abgleich / AlignmentCUC 1828
AlignmentPreparations Alignment Process
1.11 PIP positionFeed in a transmitter picture.Change the PIP position with the 4 3 and 1 2 buttons and
Press and hold the "PIP" button on the remote control whilestore with "OK".
switching on with the mains button.
1.12 PictureWith button "6" call up "Geometry" via "DIALOG CENTER" Via the menu guide, select the geometry values for the
geometry�> "SERVICE" �> "For authorised dealer " �> Codevertical deflection first, then set the values for the horizontal
Number "8500"�> (menu guide).deflection.
Feed in a test generator pattern or a standard test pattern
into the aerial socket.
Attention: The "Line shift" alignment influences the lineWith 4 or 3 button, move the picture into the centre of the
phase. Before this adjustment, set the horizontal amplituderaster. Re-adjust the horizontal amplitude according to the
to minimum and if necessary correct the raster positiontest pattern.
with the "H-Shift" plug.
Reset:Store:
The "Reset" menu contains:Call up "End without memory" and change to "End with
- either the optimum picture geometry data entered in the factorymemory" with the 4 or 3 button .
- or the average data set read out from the ROM if the TVStore the setting with the "OK" button.
has been switched on with the emergency data set.
Whenever the TV is switched on the picture geometry is set
On misalignment, these basic values can be re-loaded atto the value stored last.
any time as follows:
With button "6" call up the "Reset" menu via "DIALOG
CENTER" �> "SERVICE" �> "For authorised dealer" �>
Code Number "8500" �> (menu guide), confirm with "OK".
1.12.1VGA Picture Switch the TV to "AV4" programme position and feed in aCheck the geometry via the menu guide and correct the
geometrygeometry pattern via VGA socket.setting if necessary.
With button "6" call up the "Reset" menu via "DIALOG When storing the VGA geometry data set is entered into IC80070.
CENTER" �> "SERVICE" �> "For authorised dealer" �>
Code Number "8500" �> (menu guide), confirm with "OK".
1.13 Adjustment ofThe bridge coil L53074 is adjusted at the factory andCheck the pulse width of the oscillograms and correct it if
the bridge coilshould not be readjusted any more.necessary with coil L53074 so that it is the same for both
L53074With button "6" call up the "Geometry" menu via "DIALOG oscillograms.
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 LineSelect the convergence test pattern:With the focus control on the picture tube panel adjust
sharpnessContrast (W) to maximum.the horizontal lines for maximum sharpness.
Set the brightness (R) so that the black background of the
test pattern is just brightening.
1.15Noise reduc- Call up the "Noise reduct." menu with the red key viaWith the 4 3 buttons the noise reduction ("Off", "Auto",
tion on per- "Picture settings" �> "OK Personal" �> (menu guide)."Low") can be changed for each programme. The setting
programmeis stored when terminating the menu.
basis
all pro-With button "6" call up the "Noise reduct." menu via "DIALOG With the 4 3 buttons the noise reduction can be switched
grammes 1...99CENTER" �> "SERVICE" �> (menu guide).on or off simultaneously for all programmes 1...99.
2.Picture Tube Board
Measuring instruments: High-resistance voltmeter
Service works after replacement or repair of:
- picture tube, picture tube panel: Alignment no. 2.1 and 2.2
AlignmentPreparations Alignment Process
2.1.White balance
see 1.7
2.2.Screen gridSwitch off "Perfect Clear" (red key �> Picture settingsWith U (right control of the regulating section) on the
G2
voltage UG2�> OK Personal).picture tube panel set the voltage to 162.5V?2.5V.
Switch the TV receiver to AV mode.
Feed in a black raster.
Adjust the screen brightness so that the grey area just
becomes dark.
Connect the high-resistance voltmeter with ca. 220kW
serial resistance to R, G, B test point with the highest
voltage level.
2 - 6GRUNDIG Service |
ACEC
GRUNDIG
