Alignment Instructions - Grundig ACCORO 102 MFW 102-6110 MV/AC3 Serviceanleitung

ACCORO 102
6.3.8 Picture format Cinema Zoom with subtitles (NTSC Subtitle)
Note: after exiting this service function the picture is shifted about
13mm to the top.

7. Alignment Instructions

Measuring instruments: voltmeter, test probes 10:1, colour generator, service remote control
Service works after the replacement of ...
... the QA02: alignment no. 1, 3...7, convergence (p. 2-7, Point 6)
... a picture tube (R, G, B): alignment no. 1...3, 5...7, convergence (p. 2-7, Point 6)
... the focus block : alignment no. 1, 2
... the deflection-influencing components: alignment no. 4...7, convergence (p. 2-7, Point 6)
Alignment
1. Cutoff –Feed in a grey raster test pattern.
–Contrast: maximum
SCREEN R, G, B
–Brightness and colour: mid-position.
RCUT
–Press the p button.
GCUT
–Press the p button again, keep it pressed and press the
BCUT
MENU
– Use the direct-control buttons
functions RCUT, GCUT and BCUT then use the
buttons to set to 40H in each case.
–Press the
Note: the focus alignment is to be carried out with the set at
2. RGB focus
operating temperature (after at least 30 minutes, better after
Lens units
2 to 3 hours).
FOCUS R, G, B
–Press the p button.
–Press the p button again, keep it pressed and press the
MENU
–Press the e button repeatedly until a raster test pattern
is visible.
–Cover the lens units which are not used (e.g. to adjust the
red lens unit, cover the green and blue ones).
–Feed in a grey raster test pattern.
3. White alignment
–Voltmeter
RDRV
–Press the p button.
BDRV
–Press the p button again, keep it pressed and press the
MENU
4. Vertical center –Connect the voltmeter between TP-V and TP-G (GND).
–Feed in a white raster test pattern.
voltage
–Contrast: maximum
VCEN
–Brightness and colour: mid-position.
–Press the p button.
–Press the p button again, keep it pressed and press the
MENU
–Press the p button.
5. Picture width
–Press the p button again, keep it pressed and press the
WID
MENU
–Press the e button repeatedly until a raster test pattern
is visible.
–Use the
service function.
GRUNDIG Service
266
228
114
0
114
228
266
[mm]
Preparations
button on the set.
to select the service
button (the screen is switched dark).
Info
button on the set.
button on the set.
button on the set.
button on the set.
direct-control buttons to select the WID
Alignment procedure
–Use the screen grid controls (SCREEN) R, G and B on
the focus block (p. 1-26, Fig. 9) so that the respective
beam just becomes invisible again.
–Use the direct-control buttons
functions RCUT, GCUT and BCUT then use the
buttons to adjust so that the black area becomes
achromatic.
–If necessary end the service mode by pressing the standby
button A or switching the set off.
a) Loosen the wing nut (see Fig. ) of the
lens unit to be adjusted (e.g. red).
Turn the lens unit so that a uniform
sharpness is obtained.
Retighten the wing nut.
b) Use the focus control (e.g. R) on the
focus block (p. 1-26, Fig. 9) to adjust for best sharpness
in the screen centre.
c) Repeat the steps a) and b) if necessary.
d) If necessary end the service mode by pressing the standby
button A or switching the set off.
–Use the direct-control buttons
functions RDRV and BDRV then use the
adjust an achromatic (white) picture in each case.
–If necessary end the service mode by pressing the standby
button A or switching the set off.
–Use the direct-control buttons
function VCEN then use the
voltage of 30mV ±10mV.
–If necessary end the service mode by pressing the standby
button A or switching the set off.
–Use the direct-control buttons
width so that the picture becomes just distorted at the left
and right edge, or just becomes visible.
–Then press the button 13 times.
–If necessary end the service mode by pressing the standby
button A or switching the set off.
Alignment
to select the service
to select the service
buttons to
to select the service
buttons to adjust a
to adjust the picture
2 - 9