CUC 2033 F / 2035 F
Alignements / Alignment
2 - 3
GRUNDIG Service
GB
Alignment
Attention!
1. After any repair or replacement of NVM (IC82005) check whether the NTSC 3.58MHz quartz is fitted. If it is not, the dialog line "NTSC 3,6" in the
Service Menu must be set to "off".
Button "
Ǻ
" –> "OK" –> "SERVICE" –> "OK" –> "SERVICE" Code "8500" –> NTSC 3,6 "off" and in dialog line "End" store the setting "with mem.".
2. When no SAT Receiver (SER 250) is built in, SAT in the Service Menu is to be set to "off".
Button "
Ǻ
" –> "OK" –> "SERVICE" –> "OK", select dialog line "SAT" and switch to "off".
All adjustment controls not mentioned in this description are pre-set at the factory and must not be re-adjusted in the case of repairs.
Chassis / CRT Panel
Measuring instruments: Dual-channel oscilloscope 100MHz, 10:1 test probe, digital voltmeter, colour video generator, spectrum analyser or RF
millivoltmeter
Service works after replacement or repair of the following modules:
- Power supply: Alignment 1
- NVM IC82005: Alignment 2…8, 11
- Horizontal and vertical deflection: Alignment 10…12
- Bridge Coil L53074: Only necessary in the case of inexpert manipulation of the horizontal deflection: alignment 9
Allow the TV to warm up (approx. 15 min.) before setting the geometry, start with "Vertical Slope" and continue in the correct order.
Alignment Process
Adjust R60037 or R61313 acc. to the table (page 3-15) on
the power supply circuit diagram.
Adjust 360mV
pp
with button
Ǹ
or
Ƿ
.
Alternatively, without using a spectrum analyser or RF
millivoltmeter, adjust the picture with button
Ǹ
or
Ƿ
so that
noise just appears on the screen. Then reset until the
picture is again free of noise.
Dialog line "End", terminate "with mem" –> "OK".
With button
Ǹ
or
Ƿ
position the menu in the middle of the
picture.
Dialog line "End", terminate "with mem." –> "OK".
With button
Ǹ
or
Ƿ
enter the correct screen diagonal.
Dialog line "End", terminate "with mem." –> "OK".
Set to "off" with button
Ǹ
or
Ƿ
.
Dialog line "End", terminate "with mem." –> "OK".
Set to "off" or "on" with button
Ǹ
or
Ƿ
dependent on the
type of television receiver.
Dialog line "End", terminate "with mem." –> "OK".
Adjust the center line of the test pattern in the dialog line
"Vertical Slope" (typ. 30…33) with button
Ǹ
or
Ƿ
so that
it is just still visible.
Press button "
Ǻ
" twice (GEOMETRY –> SERVICE) and
terminate the dialog line "End" with "with mem." –> "OK".
The picture geometry is adjusted to the value last stored
whenever the TV set is switched on.
Alignment
1. +A voltage
2. Tuner AGC
3. OSD
4. Tube
(Type of picture
tube)
5. Overscan
6. NTSC 3.6
7. Vertical Slope
Preparations
This voltage must be checked and re-adjusted if necessary
after every repair and before every alignment.
Brightness: Minimum
Digital voltmeter: Cathode D61016
100MHz oscilloscope or RF millivoltmeter to tuner contact
10 or 11 and tuner ground.
Feed in a colour video generator (sound carrier switched
off) via the aerial, 70…80dB
µ
V.
Call up the dialog line "AGC" via "
Ǻ
" (DIALOG CENTER) –>
"OK" –> "SERVICE" –> "OK" –> Service Code "8500".
Call up the dialog line "OSD" via "
Ǻ
" (DIALOG CENTER) –>
"OK" –> "SERVICE" –> "OK" –> Service Code "8500".
Call up the dialog line "Tube" via "
Ǻ
" (DIALOG CENTER) –>
"OK" –> "SERVICE" –> "OK" –> Service Code "8500".
Only with IC TDA8843 or TDA8844 as well as with Philips
72cm/84cm in 4:3 and 70cm/82cm in 16:9 format picture
tubes.
Call up the dialog line "Overscan" via "
Ǻ
" (DIALOG
CENTER) –> "OK" –> "SERVICE" –> "OK" –> Service Code
"8500".
Call up the dialog line "NTSC 3,6" via "
Ǻ
" (DIALOG
CENTER) –> "OK" –> "SERVICE" –> "OK" –> Service
Code "8500".
Call up the "Vertical Slope" menu via "
Ǻ
" (DIALOG CENTER)
–> "OK" –> "SERVICE" –> "OK" –> Service Code "8500" –
> "GEOMETRY"
