Toshiba 28N14D Service Manual page 16

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2.4 Decoder Settings for Individual Programme Positions
By pressing button " " call up the "Decoder Pxx" dialog via "Dialog
Center" –> "Special functions". With the
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:
Sound
Decoder "off"
internal
Decoder "ON1"
external Analog
Sound autom.
internal Nicam
Decoder "ON2"
external Analog
all sounds
external Nicam
Decoder "ON3"
internal Analog
all sounds
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:
Operating Mode:
Picture
Sound
1. Scrambled
Analog scrambled
Nicam not scrambled
2. Scrambled
Analog scrambled
Nicam scrambled
3. Scrambled
Analog not scrambled
Nicam not 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:
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. With button " " select the dialog line
"Manual tuning" via 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.
3.2 Factory Settings
Press the " " button to select the "Factory settings" dialog line via
"Dialog Center" –> "Service".
Use the "OK" button on the remote control to call up the factory settings
(NVM) and to store them.
3.3 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
3.6" or "NTSC 4.4" on a per-programme basis under poor reception
conditions.
1 - 16
buttons it is possible to
Picture
internal
external
external
external
Menu Display
Analog ext. or ON1
Nicam internal
Analog ext. or ON2
Nicam internal
Analog int. or ON3
Nicam internal
it is possible to force the automatic
3.4 IR Data Programmer (for SAT not possible)
Call up the dialog line "IDP2 HP" via "Dialog Center" –> "Service" with
button " ".
Using the "OK" button, it is possible to store up to 99 programme
positions with data for channel, TV standard, Peri, 6-position station
name, centre fine tuning, and "0" volume offset, with the help of the IR
data programmer 2.
The Programmer transfers only the 6-position station name with centre
fine tuning and "0" volume offset.
4. Service Settings for the Dealer
4.1 Service Menu
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:
- Geometry
- White adjustment
- AGC
- AFC
- OSD horizontal
- OSD vertical
- Hotel
- OEM
- Remote control
Alignment: page 2-3
4.2 OSD Position
Call up the dialog line "OSD" with button " " via "Dialog Center" –>
"Service" –> Service Code "8500".
With the
buttons it is possible to shift the on screen display in the
horizontal or vertical direction and to store this position "with mem.".
4.3 Hotel Mode
4.3.1 Activating the Hotel Mode
Call up the dialog line "Hotel" with button " " via "Dialog Center" –>
"Service" –> Service Code "8500".
With activated "Hotel Mode":
- it is no longer possible to call up the "Dialog Center" menu with
button " ".
- the last volume setting is stored as the maximum level possible.
4.3.2 Deactivating the Hotel Mode
Press and hold button " " on the remote control handset while switching
the TV set on with the mains switch. Under the "Service" menu switch
the Hotel Mode off.
4.4 OEM
Call up the dialog line "OEM" with button " " via "Dialog Center" –>
"Service" –> Service Code "8500".
Colour change of the menus.
Standard setting for Toshiba menu: OEM "a".
4.5 Remote Control
Call up the dialog line "Remote cont." with button " " via "Dialog Center"
–> "Service" –> Service Code "8500".
RC 150 (36kHz) = "1"
4.6 Luminosity of the Operating Mode LED
Call up the dialog line "End" with button " " via "Dialog Center" –>
"Service" –> Service Code "8500".
Use the "red" minus and "green" plus buttons on the remote control to
adjust the LED luminosity in normal operating mode.
Use the "yellow" minus and "blue" plus buttons on the remote control
to adjust the LED luminosity in standby mode.
4.7 Deactivating the Protection Circuit
- Horizontal and vertical protection circuit:
connect the basis and emitter at CT50055.
- Horizontal protection circuit:
connect the basis and collector at CT57113.
- Vertical protection circuit: to short out C50052.
Attention: When the repair is completed, it is absolutely necessary to
activate the overlaod protection circuits.

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