GRUNDIG Service
2 - 9
ACCORO 102
Alignment
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.
266
228
114
0
114
228
266
[mm]
0
76
76
228
380
432.5
228
380
432.5
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
Preparations
Alignment procedure
1. Cutoff
SCREEN R, G, B
RCUT
GCUT
BCUT
2. RGB focus
Lens units
FOCUS R, G, B
3. White alignment
RDRV
BDRV
4. Vertical center
voltage
VCEN
5. Picture width
WID
–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
zɦ
to select the service
functions RCUT, GCUT and BCUT then use the
buttons
Ł ĵ
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
zɦ
to select the service
functions RDRV and BDRV then use the
Ł ĵ
buttons to
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
zɦ
to select the service
function VCEN then use the
Ł ĵ
buttons to adjust a
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
Ł ĵ
to adjust the picture
width so that the picture becomes just distorted at the left
and right edge, or just becomes visible.
–Then press the
Ł
button 13 times.
–If necessary end the service mode by pressing the standby
button
A
or switching the set off.
–Feed in a grey raster test pattern.
–Contrast: maximum
–Brightness and colour: mid-position.
–Press the
p
button.
–Press the
p
button again, keep it pressed and press the
MENU
button on the set.
–Use the direct-control buttons
zɦ
to select the service
functions RCUT, GCUT and BCUT then use the
Ł ĵ
buttons to set to 40H in each case.
–Press the
Info
button (the screen is switched dark).
Note: the focus alignment is to be carried out with the set at
operating temperature (after at least 30 minutes, better after
2 to 3 hours).
–Press the
p
button.
–Press the
p
button again, keep it pressed and press the
MENU
button on the set.
–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.
–Voltmeter
–Press the
p
button.
–Press the
p
button again, keep it pressed and press the
MENU
button on the set.
–Connect the voltmeter between TP-V and TP-G (GND).
–Feed in a white raster test pattern.
–Contrast: maximum
–Brightness and colour: mid-position.
–Press the
p
button.
–Press the
p
button again, keep it pressed and press the
MENU
button on the set.
–Press the
p
button.
–Press the
p
button again, keep it pressed and press the
MENU
button on the set.
–Press the
e
button repeatedly until a raster test pattern
is visible.
–Use the
zɦ
direct-control buttons to select the WID
service function.
