Service And Special Functions - Grundig Davio 37 Service Manual

GRUNDIG Service

Service and Special Functions

1. Switching-on Options
1.1 ATS Reset (Automatic Tuning System)
Press the power "ON" button while pressing button "L+" on the
Remote Control –> LANGUAGE SELECTION –> OK.
The ATS system stops at every station of acceptable reception quality
(AFC and coincidence) and stores the station data and the respective
standard automatically (data is stored immediately in the
CIC82501 NVM). The system then continues searching.
Pressing the "TXT" button stops the ATS function.
1.2 Loading the Average Values / Emergency Data Set (ROM Data)
Press and hold the "P-" button on the Remote Control and switch on
with the mains button. After replacement of CIC82501 (NVM) for
example, the TV set is started with the emergency data set.
In doing so, the basic data is read out from the ROM of processor
IC81500 and loaded into the NVM CIC82501:
CIC82501: (data specific to the TV can be set via the Dialog Center):
- chroma and audio standards
- decoder settings
- reversing point
- OSD position
- ATS reset
- Hotel Mode on/off
- AGC and AFC
- analog values (volume, brightness etc.)
- picture sharpness
- security on/off
- geometry adjustment
- programme data (channel finetuning, station ident)
Subsequently enter your personal values, picture geometry via the
Dialog Center.
1.3 Cancelling the Parental Lock Continuously
To cancel the parental lock enter the number 7038.
1.4 EPROM Version Number
TP 750:
Press button " " to call up the "Dialog Center" –> OK. Pressing the
"AUX" button displays the software version number of the TV set.
TP 150C:
Press button " " to call up the "Dialog Center". Pressing the "Z" button
displays the software version number of the TV set.
1.5 Switching on with the Last Viewed Programme.
The channel position which has been selected when switching off is
recovered when switching on again (last station memory).
2. Special Functions in the Dialog Center
2.1 Activating or Deactivating the Economy Mains Switch (option)
Reach the "Economy mains switch" menu via button " " (–> OK with
TP 750) "Dialog Center" –> "Special functions". With the buttons
select "1h...3h".
The TV receiver switches off completely from Standby mode at the
predetermined time or by pressing the mains button
This function is not used when "off" is selected.
2.2 Sound Scale or Picture/Sound Settings
TP150C:
Reach the "Sound scale" menu via button " " "Dialog Center" –>
"Special functions".
With the "off" setting, the sound scale is not displayed on the screen.
TP750:
Reach the "Picture/Sound settings" menu via button " " –> OK "Dialog
Center" –> "Special functions".
With the "off" setting, the sound scale is not displayed on the screen.
2.3 Automatic Volume Control (option)
Reach the "Volume Limiter" dialog via "Dialog Center" –>
"Special functions" by pressing button " " (–> OK with TP 750). The
volume of stations with large deviation is adjusted to normal deviation
when selecting "on".With the "Dolby Surround" setting in the Sound
menu, this function is deactivated.
2.4 Decoder Settings for Individual Programme Positions
Call up the "Decoder Pxx" dialog via button " " (–> OK with TP 750)
"Dialog Center" –> "Special functions". With the
possible to set an analog or digital decoder to be switched over
internally or externally on a per-programme basis for scrambled
stations.
Possible decoder settings are: "off", "ON1", "ON2", "ON3".
Meaning of the decoder settings:
Decoder "off"
Decoder "ON1"
Sound autom.
Decoder "ON2"
all sounds
Decoder "ON3"
all sounds
The different possibilities of setting the decoder function ensure that
the audio signal path is always switched correctly.
The three possible scrambling methods are:
Operating Mode:
Picture
1. Scrambled
2. Scrambled
3. Scrambled
Method 1 is for Channel+ operation.
Methods 2 and 3 are used for example in Great Britain.
Video Signal Path
Due to the fact that the video signal is generally scrambled it is only
necessary to apply the decoder video signal switching voltage.
Audio Signal Path
Case 1:
The decoder is not stereo capable. Therefore the Nicam sound is not
scrambled. The decoder changes the audio path in dependence of the
Nicam decoder between internal and external.
Case 2:
twice. The decoder is stereo capable for scrambled analog and Nicam sound.
Therefore the decoder is switched over to external operation (usual
case).
Case 3:
The sound is generally connected only internally (no connection to the
audio path of the EURO-AV socket).
2.5 Video AV (only in AV mode)
The AV 1 socket is switched in VHS/SVHS mode.
3. Open Service Settings
3.1 Maximum Programme Number (reversing point)
Call up the programme number which is one higher than the highest
selectable programme position. Select the dialog line "Manual tuning"
via button " " (–> OK with TP 750) the "Dialog Center". Following the
menu guide, enter "00" in the "Channel" dialog line. Confirm with "OK"
and exit the menu. After this setting only those programme positions
can be selected with the "P+/P-" buttons in Programme Mode which
are lower than the "00" position.
1 - 21
CUC 2105, 2121, 2121 M
Sound Picture
internal internal
external Analog external
internal Nicam
external Analog external
external Nicam
internal Analog external
internal Nicam
Sound Menu Display
Analog scrambled Analog ext. or ON1
Nicam not scrambled Nicam internal
Analog scrambled Analog ext. or ON2
Nicam scrambled Nicam internal
Analog not scrambled Analog int. or ON3
Nicam not scrambled Nicam internal
buttons it is