Toshiba 28N04D Service Manual page 16

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3. Picture Settings
Basic Adjustment
Call up the picture settings menu with the red button (eye). Via the
menu guide it is possible to change the contrast, picture sharpness and
tint (only NTSC sources).
The analog values for contrast, picture sharpness and tint are stored
automatically when leaving the menu.
4. Sound Settings
4.1 Sound Switching:
Call up the sound settings menu with the blue button (ear). Different
types of sounds are available dependent on the TV standard:
- "Mono": in the case of pure mono transmissions
- "Mono A / Mono B": in the case of 2-channel sound transmissions
- "Stereo / Mono": in the case of poor stereo sound quality, the sound
can be switched over to mono
- "Nicam / FM"
- "Nicam A / Nicam B / FM"
- "Nicam Stereo / FM"
The forced-mono, balance, bass, treble and similar values are stored
automatically when leaving the menu.
4.2 Headphone Sound Switching
Call up the sound settings menu with the blue button. Dependent on the
TV standard, different settings are possible for the headphones:
- "Mono A / B", independent of the loudspeakers
- "Nicam A / Nicam B / FM", independent of the loudspeakers
With all other options, separate selection of the sound for the head-
phones and loudspeakers is not possible.
5. Open Service Settings
5.1 Maximum Programme Number (reversing point)
Call up the programme number which is the next to the highest
selectable programme position. With button " " select the dialog line
"MANUAL TUNING" via the "DIALOG CENTER". Following the menu
guide, enter "00" in the dialog line Band. Confirm with "OK" and
terminate 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.
5.2 Decoder P1...79
By pressing button " " call up the dialog line "Decoder (P1-79)" via
"DIALOG CENTER" –> "SERVICE". With the
to set an analog or digital decoder to be switched over internally or
externally on the programme positions 1...79 for scrambled stations.
Possible decoder settings are: "Manual", "off", "ON1", "ON2", "ON3".
With the "Manual" setting it is possible to select the decoder switching
function to be "off" or "ON" for the individual programme positions
(see 2.4).
Meaning of the decoder settings:
Sound
Decoder "off"
internal
Decoder "ON1"
Sound autom.
external Analog
internal Nicam
Decoder "ON2"
all sounds
external Analog
external Nicam
Decoder "ON3"
all sounds
internal Analog
internal Nicam
The different possibilities of setting the decoder function ensure that
the audio signal path is always switched correctly.
The three possible scrambling methods are:
1 - 16
Operating mode:
Picture
1. Scrambled
2. Scrambled
3. Scrambled
Method 1 is for Canal+ 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:
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).
5.3 Forced Chroma Switching
Call up the dialog line "Color" via "DIALOG CENTER" –> "SERVICE"
with button " ". With the buttons
chroma standard switching function into "PAL", "SECAM" or "NTSC"
on a per-programme basis under poor reception conditions.
5.4 Switching off the Blue Screen Background
Call up the dialog line "Blue Screen" via "DIALOG CENTER" –>
"SERVICE" with button " ". When this function is set to "off" the blue
background is switched off (e.g. when the aerial signal is missing).
5.5 Black Screen when Changing the Programme
Call up the dialog line "Black Screen" via "DIALOG CENTER" –>
"SERVICE" with button " ". When this function is set to "on" the screen
is blanked when changing the programme.
buttons it is possible
5.6 Display of the Station Name On or Off
The station ident is read out from VT (teletext) or the VPS signal.
Call up the dialog line "Station name" via "DIALOG CENTER"
–> "SERVICE" with button " ". With this function set to "off" it is possible
to avoid the station name being displayed on the screen for a short time
when changing the programme.
5.7 Group Delay Time / Setting the National Standards
Call up the dialog line "B/G FM 5.5 NIC" via "DIALOG CENTER"
–> "SERVICE" with button " ". Select the standard corresponding to
the country where the set is operated.
S/SF/N = linear, B/DK/E = equalized.
Picture
In countries with standards mix operation (e.g. Danmark) the standard
internal
is to be set via the dialog menu "Manual tuning" –> "Standard".
external
6. Service Setting for the Dealer
6.1 Service Menu
external
Call up the Service Menu with button " " via "DIALOG CENTER"
–> "SERVICE" –> Service Code.
Having entered the code number "8500" the dealer can change the
following settings under menu guide:
external
- Geometry
- White balance
- AGC
- AFC
- Tube
- Cut-off align
- Over-scan
Alignment: page 2-4
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
it is possible to force the automatic

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