6. Block Diagram, I2C
Overview Block Diagram 41
I C 42-43
7. Electrical Diagrams and Test Point with waveform diagram
8. PCB diagram
Main PCB 52
CRT PCB 53
MPX PCB 54
SIDE AV PCB 55
9. Alignment Procedures 56 - 64
10. Circuit Description 65
11. List of Abbreviations 66 - 68
12. Spare Parts List 69 - 89
2
Power Supply (Diagram A1) 44
Line Deflection (Diagram A2) 44
Frame Deflection (Diagram A3) 45
Tuner IF (Diagram A4) 45
MCU,Video IF and Sound IF (Diagram A5) 46
BTSC (Stereo/SAP) Decoder(Diagram A6) 47
Video Source Switching (Diagram A7) 47
Side AV (Diagram A8) 48
Audio Amplifier (Diagram A9) 48
CRT Panel (Diagram B) 49
Transistor Test Voltage 49
Test point with Waveform Diagram 50 - 51
rights reserved. No part of this publication may be reproduced, stored in aretrieval system or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise
without the prior permission of Philips.
1
Colour Television Chassis: M123A
1. Technical Specifications, Connections and Chassis Overview
Index:
1. Technical Specifications.
2. Connections.
3. Chassis Overview.
Note:
Below described specifications are not valid
for one product, but for the whole product
range.
See Product Survey for specific models.
Figures can deviate slightly from the actual
situation, due to different set executions.
Audio output : =3W+3W
Mains voltage : AC120V
Mains frequency : 60 Hz
Ambient temperature : + 5 to + 45 deg. C
Maximum humidity : 90 %
Power consumption : 80W
Standby Power consumption : <3W
L
(MONO)
VIDEO
S-VIDEO
2 - Audio L (0.5 Vrms / 1 k_)
3 -Video CVBS (1 Vpp / 75 )
4 - S-video (1 Vpp / 75)
SIDE AV PANEL
1.2.2 Rear Connections
DVD INPUT
L--
AUDIOR
YCbCr
VIDEO
75OHM
ANTENNA
INPUT
In2
OUT
TV/AVSENSOR
TV/AV
SENSOR
FRONT PANEL
DVD Input
(1 Vpp / 75 _)
1 - Y
2 - Cb(1 Vpp / 75 _)
3 - Cr(1 Vpp / 75 _)
AV2 In
4 - Video CVBS (1 Vpp / 75 _)
5 - Audio L (0.5 Vrms / 10 k_)
6 - Audio R (0.5 Vrms / 10 k_)
Monitor Out
7 - Video CVBS (1 Vpp / 75 _)
8 - Audio L (0.5 Vrms / 1 k_)
9 - Audio R (0.5 Vrms / 1 k_)
STANDBY
STANDBY
POWER
POWER
REAR PANEL
2
Colour Television Chassis: M123A
1.3 Chassis Review
CRT PANEL
Side
AV
Panel
MSP PANEL
Main
Chassis
Panel
7.1 Power Supplier
7.2 Line Deflection
7.3 Frame Deflection
7.4 Tuner IF
7.5 MCU, Video IF and
Sound IF
7.6 BTSC (Stereo/SAP)
Decode
7.7 Video Source
Switching
3
Colour Television Chassis: M123A
2. Safety & Maintenance Instructions, Warnings and Notes
2.1 Safety Instructions For Repairs
Safety regulations require that during a repair:
--Due to the 'hot' parts of this chassis, the set must be connected to the AC power via an
isolation transformer.
-- Safety components, indicated by the symbol _, should be replaced by components identical
to the original ones.
-- When replacing the CRT, safety goggles must be worn. Safety regulations require that after a
repair, the set must be returned in its original condition. Pay particular attention to the
following points:
-- General repair instruction: as a strict precaution, we advise you to re-solder the solder
connections through which the horizontal deflection current is flowing, in particular:
--- all pins of the line output transformer (LOT)
--- fly-back capacitor(s)
--- S-correction capacitor(s)
--- line output transistor
--- pins of the connector with wires to the deflection coil
--- other components through which the deflection current flows.
* Note: This re-soldering is advised to prevent bad connections due to metal fatigue in solder
connections and is therefore only necessary for television sets more than two years
Old.
-- Route the wire trees and EHT cable correctly and secure them with the mounted cable clamps.
-- Check the insulation of the AC power cord for external damage.
-- Check the strain relief of the AC power cord for proper function, to prevent the cord from
touching the CRT, hot components, or heat sinks.
-- Check the electrical DC resistance between the AC plug and the secondary side (only for sets
that have an isolated power supply). Do this as follows:
1. Unplug the AC power cord and connect a wire between the two pins of the AC plug.
2. Turn on the main power switch (keep the AC power cord unplugged!).
3. Measure the resistance value between the pins of the AC plug and the metal shielding of the
tuner or the aerial connection of the set. The reading should be between 4.5 Mand 12 M.
4. Switch the TV OFF and remove the wire between the two pins of the AC plug.
Check the cabinet for defects, to prevent the possibility of the customer touching any
Internal parts.
2.2 Maintenance Instructions
It is recommended to have a maintenance inspection carried out by qualified service
personnel. The interval depends on the usage conditions:
--- When the set is used under normal circumstances, for example in a living room, the
recommended interval is hree to five years.
--- When the set is used in an environment with higher dust,grease or moisture levels, for
example in a kitchen, the recommended interval is one year.
--- The maintenance inspection includes the following actions
1. Perform the 'general repair instruction' noted above.
2. Clean the power supply and deflection circuitry on the chassis.
3. Clean the picture tube panel and the neck of the picture tube.
4
Colour Television Chassis: M123A
2.3 Warnings
--- In order to prevent damage to ICs and transistors, avoid all high voltage flashovers. In order to
prevent damage to the picture tube, use the method shown in Fig. 2-1, to discharge the picture
tube. Use a high voltage probe and a multi-meter (position VDC). Discharge until the meter
reading is 0 V (after approx. 30 s).
---- All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD)
Careless handling during repair can reduce life drastically. When repairing, make sure that you
are connected with the same potential as the mass of the set by a wristband with resistance.
Keep components and tools also at this potential. Available ESD protection equipment:
--- Together with the deflection unit and any multi-pole unit, flat square picture tubes form an
integrated unit. The deflection and the multi-pole units are set optimally at the factory.
Adjustment of this unit during repair is therefore not recommended.
---- Be careful during measurements in the high voltage section and on the picture tube.
Never replace modules or other components while the unit is switched ON.
---- When you align the set, use plastic rather than metal tools. This will prevent any short circuits
and the danger of a circuit becoming unstable.
2.4 Notes
--- Measure the voltages and waveforms with regard to the chassis (= tuner) ground (), or hot
ground (), depending on the area of circuitry being tested.
---- The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service
Default Mode (see chapter 5) with a color bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless
stated otherwise) and picture carrier at 475.25 MHz (PAL) or 61.25 MHz (NTSC, channel 3).
---- Where necessary, measure the waveforms and voltages with () and without () aerial signal.
Measure the voltages in the power supply section both in normal operation () and in standby ().
These values are indicated by means of the appropriate symbols.
---- The picture tube panel has printed spark gaps. Each spark gap is connected between an
electrode of the picture tube and the Aquadag coating.
--- The semiconductors indicated in the circuit diagram and in the parts lists are completely
interchangeable per position with the semiconductors in the unit, irrespective of the type
Indication on these semiconductors.
4822 344 13999.
_
5
Colour Television Chassis: M123A
3. Directions for Use
3.1 Basic Cable TV Connection
The cable TV signal into your home
may be a single cable (75ohm) or may
include a cable Box. In either case, the
connection to the TV is easy.
If your Cable TV signal comes
directly via a 75ohm coaxial cable,
use the following steps:
Connect the Cable TV signal to
the 75 OHM ANTENNA INPUT jack
on the rear of the TV. Screw it
Plug the TVs power cord into a
power outlet and turn on the TV.
Set TV/CATV to CATV as detailed in
page11.
Refer to AUTO SEARCH to set up
your available channels. Details
are on page 12.
Cable TV company
75 OHM
ANTENNA
INPUT
DVDINPUT
75OHM
YCbCr
ANTENNA
INPUT
IN2
OUT
VIDEOAUDIORL--
If you have a Cable Box, use the
following steps.
Connect the Cable TV signal to
the IN jack on the Cable Box.
Connect the separate coaxial
cable to the OUT jack on the Cable
Box and to the 75 OHM ANTENNA
INPUT jack on the rear of the TV.
Plug the TVs power cord into a
power outlet and turn on the TV.
Set TV/CATV to CATV as detailed in
page11.
Set the TV to channel 3 or 4 (the
same as the Channel3/4 switch on
your Cable Box if applicable).
Change channels at the Cable
Helpful Hints
An RF coaxial cable (to
connect the Cable Box to
the TV) may be supplied
by the Cable TV company.
It is not supplied with the
TV.
You can connect a
Satellite Receiver the
DVDINPUT
75OHM
YCbCr
ANTENNA
INPUT
IN2
OUT
VIDEOAUDIORL--
Cable TV company
75 OHM
ANTENNA
INPUT
Cable Box
Your Cable Box may have separate Audio and Video Out
jacks instead. If so, use audio and video cables to connect
the AUDIO/VIDEO OUT jacks of the Cable Box to the
AUDIO/VIDEO IN 2 jacks on the rear of the TV.
Press the TV/AV on the remote control to set the TV to the
6
Colour Television Chassis: M123A
3. Directions for Use
3.2 Basic Antenna Connection
A combination antenna receives normal
broadcasting channels (VHF2-13 and
UHF 14-69). Your connection is easy
since you will connect the antenna to
the 75OHM ANTENNA INPUT jack on
the rear of the TV.
If your antenna has a round cable
(75 ohm) on the end, then you are
ready to connect it to the TV. Go to
step 2.
If your antenna has flat twin-lead
wire (300 ohm), you first need to
attach the antenna wire to the screws
on a 300 to 75 ohm adapter (not
Push the round end of the adapter or
antenna cable onto the 75 OHM
ANTENNA INPUT jack on the rear of
the TV. If the round end of the antenna
cable is threaded, screw it down tight.
Plug the TVs power cord into a
power outlet and turn on the TV. Set
TV/CATV to CATV as detailed in
page11.
Refer to AUTO SEARCH to set up
your available channels. Details are
on page 12.
OR
75 OHM
ANTENNA
INPUT
DVDINPUT
75OHM
YCbCr
ANTENNA
INPUT
IN2
OUT
VIDEOAUDIORL--
If you have separate UHF and VHF antennas, you need an
optional combiner to connect to the TV.
UHFAntenna
VHFAntenna
VHFAntenna
7
UHF/VHF
Combiner
75-300 Ohm Adapter
DVDINPUT
75OHM
YCbCr
ANTENNA
INPUT
IN2
OUT
VIDEOAUDIORL--
Rear of TV
Colour Television Chassis: M123A
3. Directions for Use
3.3 Basic to VCR (ACCESSORY)Connection
The basic Antenna/Cable TV to Accessory
(VCR, DVD Player, etc.) to TV connection is
shown at right. For other hookups (such as
those with Cable Boxes), refer to the
owners manual of the Cable Box or other
Accessories.
Connect a yellow video cable to the
VIDEO IN 2 jack on the rear of the
TV and to the VIDEO OUT jack on
your VCR(or )other Accessories.
Connect red and white audio cables
to the AUDIO IN 2 jacks(left and right)
on the rear of the TV and to the
AUDIO OUT jacks on your VCR(or
other device.) Match the cable colors
to the jack colors.
Turn on the TV and the VCR.
Press the TV/AV button on the TVs
remote control until AV2 appears in the
upper right corner of the TV screen.
When you play material on the VCR,
DVD player, etc. that is connected to the
AUDIO and VIDEO IN 2 jacks on the rear
of the TV, it will appear on the TV on the
AV 2 channel.
There are Component Video In jacks on
the rear of the TV. These are labelled
Helpful Hints
DVD Y, Cb and Cr and are red, blue and
green. Use these to connect a DVD
Audio and video cables are
not supplied with the TV.
Audio cables are usually
marked with red and white.
Video cables (CVBS) are
usually marked with yellow.
player that has Component Video Out
jacks. This will provide the best picture
quality. Use Component Video cables,
which are not supplied with the TV.
If you connect the DVD player to the
DVD jacks, set the TV to YUV channel to
watch DVD s. Press TV/AV button on the
You can connect the antenna
or Cable TV signal to either
the ANTENNA IN jack on your
VCR or to the 75 OHM
ANTENNA INPUT jack on the
TV. If you connect it to the
VCR, choose TV channels at
remote so YUV appears on the TV
screen.
Use either DVD or VIDEO In2 jacks, but
do not use both for the same piece of
equipment. You only need one video
connection per each accessory(DVD
player, etc.).
the VCR. Connect it to the
VCR if you want to record TV
programming through VCR.
DVD INPUT
Your VCR may not have
Audio and Video Out jacks,
but only an RF or ANTENNA
OUT jack. Use an Therefore
coaxial cable to connect the
VCRs ANTENNA OUT jack
to the TVs 75OHM
ANTENNA INPUT jack.
DVDINPUT
75OHM
YCbCr
ANTENNA
INPUT
IN2
OUT
VIDEOAUDIORL--
There are AUDIO and VIDEO IN1 jacks at
the lower-right corner of the rear of the TV
set. To view material playing on
equipment connected here, press the
TV/AV so VIDEO 1 is on the TV.
There is also an S-VIDEO IN jack in this
area. Use S-Video connection if your DVD
player, camcorder, etc. has an S-Video
Out jack. S-Video provides a clearer
picture than the standard CVBS video
(the yellow jack). Choose the VIDEO1
channel to view material playing pn
equipment connected to the S-VIDEO IN
jack.
Use either S-VIDEO IN jack or VIDEO IN1
jacks. Do not use both at the same time
for the same piece of equipment. This
would interfere with the picture display. If
both are used, S-VIDEO IN has priority
over the yellow VIDEO In1 jack.
IN1
R
AUDIO
L
(MONO)
VIDEO
S-VIDEO
YCbCr
DVDINPUT
75OHM
YCbCr
ANTENNA
INPUT
IN2
OUT
VIDEOAUDIORL--
DVD INPUT
R
YCbCr
R
IN2
R
OUT
VIDEOAUDIORL--
DVDINPUT
75OHM
YCbCr
ANTENNA
INPUT
IN2
OUT
VIDEOAUDIORL--
8
Colour Television Chassis: M123A
3. Directions for Use
3.4 Basic to Antenna Connection
Television
Press POWER to turn on the TV.
Press VOL.to increase the sound
level. Press VOL. To lower the sound
level.
Press CH. or CH.to select TV
channels.
Press MENU to see the TVs on-screen
menu. In the menu, use VOL. / and CH.
/ button to make adjustments or
selections.
You can press MENU on either the
remote control or the front of the TV to
access or remove the menu.
Remote control
TV/AVSENSOR
STANDBY
POWER
Point the remote control toward the
remote sensor on the front of the TV when
operating the TV with the remote control.
Battery Installation
To load batteries into the remote control:
Remove the battery compartment lid
1.
on the rear of the remote . Press in the
tab, then lift off the lid.
2.
Place two AAA batteries in the remote.
Be sure the (+) and (-) ends of the
batteries line up correctly (as marked
inside the remote).
Reattach the battery compartment lid.
3.
Helpful Hints
The channel number will
appear briefly when you
change channels. Or, press
DISPLAY on the remote to
see the channel number.
Press TV/AV on the front of
the TV to choose AV1/ SVideo, AV2, or YUV.
9
Colour Television Chassis: M123A
3. Directions for Use
3.5 Remote Control
TV/AV Button
Press to select TV channels or the Audio
/Video IN channels(AV1/S-VIDEO, AV2,
or YUV).
A/CH Button
In TV mode, press to return to the
previous channel.
Note: in AV mode, press A/CH to only
enter TV mode.
DISPLAY
Press to see the current channel number
on the TV screen. Press again to display
the current time on the screen.
Press to remove a menu from the screen.
SLEEP Button
Press to select a time period (120
minutes to 10 minutes in 10 minutes
decrements) after which the TV will turn
itself off. Details are on page 22.
MTS Button
Press to select a sound mode if available
with the TV programming: MONO,
STEREO, SAP and MONO+SAP.
Details are on page 31.
MENU Button
Press to see the TVs on-screen menu.
Press to go back to the previous menu or
to remove a menu from the screen.
FAVORITE Button
Press to browse the channels preset in
Favorite List.
Details are on page 14.
SMART PICTURE Button
Press to select one of the four picture
settings(Personal, Movies, Sports, Weak
Signal).
Details are on page 17.
STANDBY Button
Press to turn the TV on or off(standby).
You also can turn on the TV by pressing
the CH(annel) / buttons on the front of
the TV.
NUMBER Buttons
Press to select TV channels directly. For
single-digit channels, press two0first,
then the number of the channel.
For double-digit channels, press
first, then the two numbers of the
channel. For example, to choose
channel 45, press the 0 button, then
Number 4, then Number 5.
For channels 100 and above, press
three number buttons of the channel
directly.
(You can select channels above 69 only
if you have Cable TV. Make sure
TV/CATV is set to CATV. Details are on
page 11.)
MUTE Button
Press to cancel or restore the TV sound.
Pressing the volume buttons (VOL or
VOL +) also will cancel mute and restore
the sound.
OK Button
Within on-screen menu, press to enter
some special function, such as Favorite
List, etc..
SMART SOUND Button
Press to select one of the four sound
settings(Voice, Music, Theatre, or
Personal)
Details are on page 29.
CH.(channel)+/- Button
Press to select memorized TV channels.
0
VOL.(volume)+/- Button
Press to adjust the TV sound level.
10
Colour Television Chassis: M123A
3. Directions for Use
3.6 Language
Language
You can set the TVs on-screen menu to be
in English, or Spanish.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Feature).
Press CH- to highlight Language.
Press VOL+ or VOL- to select
English or Espanol (Spanish).
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
00
On
Language
C.CaptOff
P. Lo ck
Child Lock
Language
C.CaptOff
P. Lo ck
Child LockOff
English
Off
English
Helpful Hints
The language control only
affects the language of the
TV menus. It does not
change the other on-screen
text features, such as
Closed Captions.
11
Colour Television Chassis: M123A
3. Directions for Use
3.7 TV/Cable TV (CATV)
It is important for the TV to know what type
of signal-Cable TV(CATV) or a normal
antenna-you are using. To tell the TV
whether you are using a cable TV signal, set
TV/CATV to TV or CATV as follows.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Preset).
Press CH- to enter Preset submenu.
Press CH+ or CH- repeatedly tohighlight TV/CATV.
Press VOL+ or VOL- to select TV or
CATV.
Choose CATV if you have Cable TV
service. (See page five for connection
details.) If you do not have Cable TV
service and you connected an
antenna to the TV, choose TV. (See
page six for connection details.)
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
50
On
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
CATVTV/CATV
TVTV/CATV
Add
TVTV/CATV
Add
Add
2Channel
2Channel
2Channel
Helpful Hints
When CATV is selected,
channels 1-125 are
available.
When TV is selected, only
channels 2-69 are available.
You cannot select Preset if
the TV is set to AV1/Svideo, AV2, or YUV. Press
TV/AV repeatedly to get to
the TV channels.
12
Colour Television Chassis: M123A
3. Directions for Use
3.8 Auto Search (Setting TV Channels)
You can set your TV to receive local TV
channels (From an antenna) or Cable TV
channels(when you have Cable TV service).
Then, use AUTO SEARCH to set up
channels that are available for you. This
makes it easy for you to select only the
available TV stations when you press CH+ or
CH-. Before you start AUTO SEARCH,
connect the Antenna or Cable TV signal as
detailed on pages five-six; set TV/CATV as
described on page11.
Press MENU to see the menu.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Off
Normal
50
50
50
50
On
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
TVTV/Cable
Add
2Channel
Press VOL+ or VOL- to highlight
(Preset).
Press CH- to enter Preset submenu.
Press CH+ or CH- repeatedly tohighlight Auto search.
Press VOL+ to start programming TV
channels. Press the VOL- if you need
to stop channel programming during
the process.
When channel setup is complete, the
TV will go to its lowest channel.
Helpful Hints
Press CH+ or CH- to see
which channels are in the
TVs memory. You can still
select non-memorized
channels using the Number
buttons on the remote
control.
TVTV/CATV
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
Programming
Please Wait
Stop
Add
TV2
2Channel
To delete unwanted
channels from the
TVs
memory or to add more
channels, see ADD/ERASE
on page14.
You cannot select Presetmenu if the TV is set to
AV1/S- video, AV2, or YUV.
Press TV/AV repeatedly to
get to the TV channels.
13
Colour Television Chassis: M123A
3. Directions for Use
3.9 Manual Channel Tunning/Fine Tuning
Manual Channel Tuning lets you quickly
select the next available channel. For
example, if you are looking for a channel
between 60 and 70, start the search at
channel 60 and go up.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Preset).
Press CH- to enter Preset submenu.
Press CH+ or CH- repeatedly tohighlight TV/CATV.
Press VOL+ or VOL- to select TV or
CATV(whichever you have).
Details are on page11.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
50
On
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
CATVTV/CATV
TVTV/CATV
Add
Add
2Channel
2Channel
Press CH+ or CH- repeatedly tohighlight Channel.
Press VOL+ or VOL- to enter the
channel number at which you want to
begin the search.
Press CH+ or CH- repeatedly to
highlight Manual.
Press VOL+ to start searching
upward (for example, starting at
channel 60 and going up to 61, 62, 63,
etc.). Press VOL- when you find thechannel you want. This stop the
search. Otherwise the search will
stop at the first available channel.
Or,press VOL- to start searching
downward (for example, starting at
channel 60 and going down to 59, 58,
57, etc.). Press VOL+ when you find the channel you want. This stop the
search. Otherwise the search will
stop at the first available channel.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
TVTV/CATV
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
Channel
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
60Channel
Add
TVTV/CATV
62
Add
or
Channel
Add/Erase
ManualDown
Fine0
Auto search
Favorite list
TVTV/CATV
58
Add
Helpful Hints
If the reception is poor, you
can select Fine to fine tuning the channel upward
or down ward till you are
satisfied.
Helpful Hints
You cannot select Preset if
the TV is set to AV1/Svideo, Av2, or YUV. Press
TV/AV repeatedly to get to
the TV channels.
14
Colour Television Chassis: M123A
3. Directions for Use
3.10 Favorite Channel Setting
You can store five channels you prefer into
the Favorite list and recall these channels
easily by press the FAVORITE button on the
remote control.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Preset).
Press CH- to enter Preset submenu.
Press CH+ or CH- repeatedly tohighlight Favorite list.
Press OK to display features of
Favorite list.
TV/CATV is highlighted. Press
VOL+ or VOL- to select TV or CATV
(whichever you have).
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
50
On
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
TVTV/Cable
Add
TVTV/CATV
Add
2Channel
2Channel
Press CH+ or CH- to select CH3(or
Ch1, Ch2, Ch4, Ch5), then Press
VOL+ or VOL- to enter a channel
number you want to store at this
position, such as CATV 8.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Helpful Hints
You cannot select Preset if
the TV is set to AV1/Svideo, AV2, or YUV. Press
TV/AV repeatedly to get to
the TV channels.
TV/CATV
CH1
CH2
CH3
CH4
CH5
TV/CATV
CH1
CH2
CH3
CH4
CH5
CATV
CATV
CATV
CATV
CATV
CATV
CATV
CATV
CATV
CATV
CATV
1
2
3
4
5
CATV
1
2
8
4
5
15
Colour Television Chassis: M123A
3. Directions for Use
3.11 Adding or Erasing Channels
You can add or erase channels from the list
in the TVs memory.
12
Using the Number buttons, select
the channel you wish to add or erase.
Color
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Preset).
Press CH- to enter Preset submenu.
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Normal
On
Off
50
50
50
50
Press CH+ or CH- repeatedly tohighlight Add/Erase.
Press VOL+ or VOL- to choose Add
or Erase.
If you select Add, the channel will be
available when you press CH+ and
CH- to move through channels.
Choosing Erase will remove the
channel from the TVs memory. The
channel will not be available when you
flips through channels with the CH+
and CH- buttons
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
TVTV/CATV
Add/Erase
ManualUp
,
Fine0
Auto search
Favorite list
Add/Erase Add
ManualUp
Fine0
Auto search
Favorite list
12Channel
Add
TVTV/CATV
12Channel
or
TVTV/CATV
12Channel
Add/Erase
ManualUp
Fine0
Auto search
Favorite list
Erase
Helpful Hints
You cannot select Preset if
the TV is set to AV1/Svideo, AV2, or YUV. Press
TV/AV repeatedly to get to
the TV channels.
16
Colour Television Chassis: M123A
3. Directions for Use
3.12 Picture Adjustmentt
To adjust your TV picture, select a channel
and follow the steps below:
Press MENU to see the menu.
Press CH- to enter (Picture)
Submenu.
Press CH+ or CH- repeatedly to
highlight your choice: Color,
Brightness, Contrast, Sharpness, Tint,
Blue Back (background), Noise
Red(reduction), C. Temp(color
temperature.)
Press VOL+ or VOL- to increase or
decrease the element you choose.
However, you can turn Blue Back or
Noise Red to only On or Off (see
below). And choose Warm, Cool or
Normal mode for color temperature.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
00
On
Off
Normal
Off
Normal
Off
Normal
50
50
50
00
On
50
50
00
On
50
50
00
On
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Color
Brightness50
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Color
Brightness50
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Helpful Hints
Color Add or reduce color.
Brightness Brighten the darkest
parts of the picture.
Contrast Adjust the distinction
between the black and white parts of
the picture.
Sharpness Improve picture detail.
Tint Obtain natural skin tones.
Blue Back Turn this option ON or
OFF. If you choose ON, a solid blue
background screen will appear if the
TV is on a weak channel(for
example, if the reception is very
poor or if the station has gone off
the air for the night). After being on
such a channel for 15 minutes, the
TV will turn itself off automatically.
Noise Red. Turn this option ON or
OFF. If you choose ON, it will reduce
the video noise.
C. Temp Set this option to Normal,
Warm or Cool mode.
Off
Normal
50
50
00
On
Color
Brightness50
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Off
Normal
50
50
00
On
Color
Brightness50
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Off
Normal
Off
Normal
Off
Normal
50
50
00
On
50
50
00
On
50
50
00
On
Color
Brightness50
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Color
Brightness50
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Color
Brightness50
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
17
Colour Television Chassis: M123A
3. Directions for Use
3.13 Smart Picture
Whether you are watching a movie or a video
game, your TV has automatic picture setting
matched for your current program.
SmartPicture resets your TVs video settings
for different types of programs and viewing
conditions. Each SmartPicture setting is
preset at the factory to automatically adjust
the
TVs Brightness, Color, Contrast,
Sharpness, and Tint.
Personal
Press SMART PICTURE on the
remote control. The current
SmartPicture setting will appear on
Press SMART PICTURE repeatedly
to select Personal, Movies, Sports, or
Weak Signal.
The Personal setting is what you
specify with the picture adjustments
as described on page 15. Personal is
the only SmartPicture setting you can
change. All others are set at the
factory during production.
Movies
Sports
,
Weak signal
18
Colour Television Chassis: M123A
3. Directions for Use
3.14 Colck
Follow these steps to set your TVs clock.
Press MENU to see the menu.
Off
Normal
50
50
50
50
On
On Time
Channel
TV/CATV
Clock
On Time
Channel
TV/CATV
Clock
Press VOL+ or VOL- to highlight
(Timer).
Press CH- to enter submenu.Timer
Press CH+ or CH- repeatedly tohighlight Clock.
Press VOL+ or VOL- to enter the
current time. Press and hold the VOL+
or VOL- to change the time quicky in
10 minute increments.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
OffOff Time
0:00
Off
0:00
TV
0:00
OffOff Time
0:00
Off
0:00
TV
9:30
2
2
Helpful Hints
If the power fails, you must
reset the clock.
19
Colour Television Chassis: M123A
3. Directions for Use
3.15 On Timer
To turn on the TV to a specific channel at a
specific time, use the On-Timer. Before you
begin, set the clock correctly. Details are on
page 17.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Timer).
Press CH- to enter submenu.Timer
Press CH+ or CH- repeatedly tohighlight Channel.
Press VOL+ or VOL- to enter the
channel number. This will be the
channel to which the TV turns on at
the specified time.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
50
On
On Time
Channel
TV/CATV
Clock
On Time
Channel12
TV/CATV
Clock
OffOff Time
0:00
Off
0:00
TV
9:30
OffOff Time
0:00
Off
0:00
TV
9:30
2
Press CH+ or CH- repeatedly tohighlight TV/CATV.
Press VOL+ or VOL- to select TV or
CATV, depending on whether you
have Cable TV service or not. Details
are on page11.
Press CH+ or CH- repeatedly to
highlight On time.
Press VOL+ or VOL- to select Once
(or Daily, Off).
If you select Once, the timer will turn
on the TV one time within the next 24
hours only.
If you select Daily, the timer will turn
on the TV at the same time and to the
same channel every day.
Choose Off to cancel the On-timer.
Press CH+ or CH- repeatedly to
highlight 0: 00 under the line of
OnTime.
Press VOL+ or VOL- to enter the On
time. Hold down VOL+ or VOL- to
change the time quickly in 10-minutes
increments. This will be the time at
which the TV will turn itself on.
OffOff Time
On Time
Channel12
TV/CATV
Clock
On TimeOnce
Channel12
TV/CATV
Clock
On TimeOnce
Channel12
TV/CATV
Clock
0:00
Off
0:00
TV
9:30
OffOff Time
0:00
0:00
TV
9:30
OffOff Time
0:00
11:30
TV
9:30
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
20
Colour Television Chassis: M123A
3. Directions for Use
3.16 OFF Timer
To turn off the TV at a specific time every day,
use the Off-Timer. Before you begin, set the
clock correctly. Details are on page 17.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Timer).
Press CH- to enter submenu.Timer
Press CH+ or CH- repeatedly tohighlight Off time.
Press VOL+ or VOL- to
Once (or
Daily, Off).
If you select Once, the timer will turn
off the TV one time within the next 24
hours.
If you select Daily, the timer will turn
off the TV at the same time every day.
Choose Off to cancel the Off-timer.
Press CH+ or CH- repeatedly to
highlight 0: 00 under the line of Off
Time.
Press VOL+ or VOL- to enter the Off
time. Hold down VOL+ or VOL- to
change the time quickly in 10-minutes
increments. This will be the time at
which the TV will turn itself off.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
50
On
OffOff Time
On TimeOnce
Channel12
TV/CATV
Clock
Off Time
On TimeOnce
Channel12
TV/CATV
Clock
Off Time
On TimeOnce
Channel12
TV/CATV
Clock
0:00
11:30
TV
9:30
Daily
0:00
11:30
TV
9:30
Daily
13:30
11:30
TV
9:30
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
21
Colour Television Chassis: M123A
3. Directions for Use
3.17 Closed Captoins
Closed captions (CC) lets you read the voice
content of TV programs on the TV screen.
Designed to help the hearing impaired, onscreen text boxes will show dialog,
conversation, and activity during TV
programming.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Feature).
Press CH- to enter Feature submenus.
Press CH+ or CH- to highlight C.Capt.
Press VOL+ or VOL- to select the closed caption you want(Off, C1,C2,
or C.Mute). C.Mute sets the TV to
show closed caption when you press
MUTE. The TV volume will be
disabled until you press MUTE again
to restore the sound.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
00
On
Language
C.CaptOff
P. Lo ck
Child Lock
Language
C.CaptC1
P. Lo ck
Child LockOff
English
English
Off
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Helpful Hints
Not all TV programs and
commercials are broadcast
with Closed Caption
information. Neither are all
Closed Caption modes
transmitted by a station for a
closed caption program.
See your TV listings for the
stations and times of Closed
Caption shows.
22
Colour Television Chassis: M123A
3. Directions for Use
3.18 Sleep-Timer
Have you ever fallen asleep in front of the TV,
only to have it wake you up at two in the
morning with a test pattern screeching in your
ears? Well, your TV can save you that trouble
by turning itself off.
Press SLEEP. The sleep display will
appear on the screen.
Within five seconds, press SLEEP
to pick the amount of time(in 10minutes decrements) before the TV
will turn itself off.
Sleep: Off
Sleep: 120min.
Sleep: 110min.
,
Sleep: 9min.
After setting the SLEEP timer, press
SLEEP to see the time remaining
before the TV turns off.
23
Sleep: 10min.
Colour Television Chassis: M123A
3. Directions for Use
3.19 Understanding Parental Lock
Parental Lock process program content
advisories from broadcasters.
Parental Lock can respond to the
content advisories and block
objectionable content (offensively
language, violence, sexual situations,
etc.) This is a great feature to censor
the type of programming children watch.
Parental Lock offers various
blocking options from which to
choose:
MATER ENABLE: this is the master
switchfor Parental Lock. When ON,
all blocking/censoring you have set is
enabled. When off, all blocking is
disabled.
BLOCK UNRATED: All unrated
programs (based on Movies Ratings or
TV Ratings) will be blocked if this
feature is ON and MASTER ENABLE is
ON.
BLOCK NO RATING: All programming
with no content advisory data will be
blocked if this feature is ON and
MASTER ENABLE is ON.
After you set a secret code, you can
block up to six ratings in TV Ratings or
Movie Ratings. These ratings are set by
the Motion Pictures Association of
America and TV broadcasters.
G: General Audience - All adges
admitted. Most parents would find this
program suitable for all ages. This type
of programming contains little or no
violence, no strong language, and little
or no sexual dialog or situation.
PG: Parental Guidance Suggested This programming contains material
that parents may find unsuitable for
younger children. It may contain one or
more of the following: moderate
violence, some sexual situations,
infrequent coarse language, or some
suggestive dialog.
PG-13: Parents Strongly Cautioned This programming contains material
that parents may find unsuitable for
younger children under the age of 13. It
contains one or more of the following:
violence, sexual situations, coarse
language, or suggestive dialog.
R: Restricted -This programming is
specially designed for adult. Anyone
under the age of 17 should only view
the this programming with an
accompanying parent or adult guardian.
It contains one or more of the following:
intense violence, intense sexual
situations, strong coarse language, or
intensely suggestive dialog.
MPAA Ratings
(Motive Picture Association of America)
TV Ratings
(TV broadcaster)
TV-Y(All children-Appropriate
For all children. ) - Designed
for a very young audience, including
children age 2-6. This type of
programming is not expected to
frighten younger children.
TV-Y7(Directed to Older
Children - Designed for
children age 7 and above.) It may be
appropriate for children who can
distinguish between make-believe and
reality. This programming may
include mild fantasy and comic
violence (FV or Fantasy violence).
TV-G(General Audience -Most
Parents would find this
programming suitable for all ages) This type of programming contains
little or no violence, no strong
language, and little or no sexual
dialog or situation.
TV-PG(Parents Guidance
Cautioned - Contains material
that parents may find unsuitable for
younger children.) This type of
programming contains one or more of
the following: moderate violence(V),
some sexual situations(S), infrequent
coarse language (L), or some
suggestive dialog (D).
NC17: No children under the age of
17 will be admitted -This type of
programming should be viewed by adult
only. It contains graphic violence,
explicit sex, or crude, indecent
language.
X: Adult only -This type of
programming contains one or more of
the following: very graphic violence,
very graphic and explicit sexual acts,
very coarse and intensely suggestive
language.
24
TV-14(Parents Strongly
Cautioned - Contains material
that parents may find unsuitable for
children under 14 years of age.) This
type of programming contains one or
more of the following: intense violence
(V), intense sexual situations(S),
strong coarse language (L), or
intensely suggestive dialog (D).
TV-MA(Mature Audience only Specially designed to be viewed
by adults and may be unsuitable for
children under 17.) This type of
programming contains one or more of
the following: graphic violence
(V),explicit sexual situations(S), or
crude, indecent language (L).
Colour Television Chassis: M123A
3. Directions for Use
3.20 Parental Lock Secret Code
Over the next few pages, you will learn how to
block programs and understand the rating
terms for certain broadcasts. First, set a secret
code.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Feature).
Press CH- to enter Feature submenus.
Press CH+ or CH- to highlight P.Lock.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Off
Normal
50
50
50
00
On
Language
C.CaptOff
P. Lo ck
Child Lock
English
Off
Press OK. The display asking you to
Enter secret code will appear on the
screen.
If you want to set a new code, go on
the steps 6-8 directly. (Or you can
press the Number buttons to enter a
four-digit code. The code0000is
the default of the TV. If you have not
set up a code previously, then
0000 is the code. )
Press VOL+ (on the remote) and the
CH+ button on the front of the TV at
the same time. The display asking
you to Enter new code will appear on
the screen.
Press the Number buttons to enter
a four-digit code. The code will
appear on the screen as you enter it.
Press OK to save the code.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
,
,
Language
C.CaptOff
P. Lo ck
Child LockOff
English
,
Enter secret code:
Enter new code:
Helpful Hints
You cannot change Parental
Lock settings without
knowing the secret code. If
your code changes, or
someone else has altered it
and possibly viewed
blocked channels.
25
Colour Television Chassis: M123A
3. Directions for Use
3.21 Blocking Programming With Movie Ratings
There are two types of ratings for P. Lock.
One is based on movie industry ratings. The
other is based on TV industry ratings. Both
can be used to censor programming.
Lets first look at the MPAA Rating options
of P. Lock.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Feature).
Press CH- to enter Feature submenus.
Press CH+ or CH- to highlight P.Lock.
Press OK to display the secret code
screen.
Press the Number buttons to enter
your four-digit code. The P.Lock setup
menu appears on the screen and the
MPAA rating is highlighted.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
00
On
Language
C.CaptOff
P. Lo ck
Child Lock
Language
C.CaptOff
P. Lo ck
Child LockOff
,
English
Off
English
Press OK to display MPAA ratings
(G, PG, PG-13, R, NC-17, and X).
Press CH+ or CH- to select the rating
you want to block.
Press OK to block (or unblock) the
rating. A checkmark will appear to the
left of the rating when blocked. When
you block a rating, higher ratings are
blocked automatically. To unblock all
the ratings, select N/A.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Helpful Hints
Blocking any rating (ON) will
block all the higher ratings
automatically. For example,
if R is blocked manually,
NC17 and X will be blocked
automatically.
To turn a rating OFF, set
each rating individually.
Enter secret code:
MPAArating
TV parental guidelines
Block unratedoff
Block No Ratingoff
Master Enableoff
CH lock
N/A
G
PG
PG-13
R
NC-17
X
26
Colour Television Chassis: M123A
3. Directions for Use
3.22 Blocking Programming with TV Ratings
Some program ratings are based on TV industry
ratings as described below.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Feature).
Press CH- to enter Feature submenus.
Press CH+ or CH- to highlight P.Lock.
Press OK to display the secret code screen.
MPAArating
TV parental guidelines
Block unratedoff
Block No Ratingoff
Master Enableoff
CH lock
MPAArating
TV parental guidelines
Block unratedoff
Block No Ratingoff
Master Enableoff
CH lock
Press the Number buttons to enter your
four-digit code. The P.Lock setup menu
appears on the screen.
Press CH+ or CH- to highlight TV prenatal
guidelines.
Press OK to display the parental
guidelines (TV-Y, TV-Y7,TV-G, TV-PG, TV14, or TV-MA).
Press CH+ or CH- to select a rating.
Press OK to turn the rating on or off. A
checkmark appears when the rating is
blocked. TV-Y and TV-PG can be turned on
(to block viewing) or off (to allow
viewing)only.
TV-Y7, TV-PG, TV-14, and TV-MA can be
customized to block V(violence), F(fantasy),
S(sexual situations), L(coarse language),
or D(suggestive dialog).
To do so, continue with these steps.
Press CH+ or CH- to highlight Content.
NONE F V S L D
TV-Y
TV-Y7
,
TV-G
TV-PG
TV-14
TV-MA
Content
,
,
,
,
NONE F V S L D
TV-Y
TV-Y7
TV-G
TV-PG
TV-14
TV-MA
Content
Content
Content
TV-Y
TV-Y
TV-Y7
TV-Y7
FantasyV---
Fantasy V---
TV-G
TV-G
Violence
Violence
Sexual
Sexual
TV-PG
TV-PG
Language
Language
TV-14
TV-14
TV-MA
TV-MA
Dialogue
Dialogue
View
---
---
View
---
View
Block
---
Press OK button to enter the Content
menu.
Press CH+ or CH- to select a rating, then
press VOL+.
Press CH+ or CH- to select the subratings(Fantasy-V, Violence, Sexual,Language, or Dialog), then press OK to
block or view that sub-rating.
Press M NU to return to the Parental
E
Guidelines screen and check your settings.
A checkmark appears when the sub-rating
is blocked.
Press M NU repeatedly to remove the
E
menu from the screen or menu will quit
after a few seconds without further action.
Helpful Hints
Any rating will block higher
ratings automatically.
To unblock all the ratings,
select NONE.
Notes:
1. Blocking TV-Y, only TVY7 is blocked automatically.
2. Blocking TV-Y7, other
rating will not change any
more.
27
Colour Television Chassis: M123A
3. Directions for Use
3.23 Parental Lock Blocking Options
After setting your Secret Code, Parental Lock
offers special blocking options.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Feature).
Press CH- to enter Feature submenus.
Press CH+ or CH- to highlight P.Lock.
Press OK to display the secret code
screen.
Press the Number buttons to enter
your four-digit code. The P.Lock setup
menu appears on the screen.
Press CH+ or CH- to select Master
Enabled, Block Unrated, or Block
No Rating.
MATER ENABLE: this is the master
switch for Parental Lock. When ON,
all blocking/censoring you have set is
enabled. When off, all blocking is
disabled.
BLOCK UNRATED: All unrated programs
(based on Movies Ratings or TV Ratings)
will be blocked if this feature is ON and
MASTER ENABLE is ON.
BLOCK NO RATING: All programming
with no content advisory data will be
blocked if this feature is ON and MASTER
ENABLE is ON.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
00
On
Language
C.CaptOff
P. Lo ck
Child Lock
Language
C.CaptOff
P. Lo ck
Child LockOff
Enter secret code:
MPAArating
TV parental guidelines
Block unratedoff
Block No Ratingoff
Master Enableoff
CH lock
English
Off
English
Press VOL+ or VOL- to turn the blocking option On or Off.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
28
Colour Television Chassis: M123A
3. Directions for Use
3.24 Child Lock
Child Lock allows you to lock the buttons on
the front of the TV.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Feature).
Press CH- to enter Feature submenus.
Press CH+ or CH- to highlight Child
Lock.
Choose ON to disable all the buttons
on the front of the TV. Child Lock On
will appear on the TV screen each
time when you press the button on the
front of the TV.
You can still operate the TV with the
remote control. You can still use the
POWER button on the front of the TV,
but only to turn off the TV(not on). Set
Child Lock to Off to cancel this feature
so you can use the buttons on the
front of the TV again.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
00
On
Language
C.CaptOff
P. Lo ck
Child Lock
Language
C.CaptOff
P. Lo ck
Child LockOff
English
Off
English
29
Colour Television Chassis: M123A
3. Directions for Use
3.25 Smart Sound
When you are watching a movie or video
game, your TV has sound settings that match
these programming types.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Sound).
Press CH- to enter Sound submenus.
Press CH+ or CH- to highlight Smart
Sound.
Press VOL+ or VOL- to select
Personal, Voice, Music, or Theatre.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
,
Off
Normal
50
50
50
00
On
Vol ume
Bass50
Treble
Balance
Smart Sound
Vol ume
Bass50
Treble
Balance
Smart Sound
Theater
Theater
50
50
00
50
50
00
Helpful Hints
You can choose a Smart
Sound setting quickly by
pressing the SMART
SOUND button on the
remote control.
30
Colour Television Chassis: M123A
3. Directions for Use
3.26 Sound Adjustment
You can adjust the low frequency(Bass) or
high frequency(Treble). You can also adjust
the Balance to increase the volume of the left
and right sound channels.
Press MENU to see the menu.
Press VOL+ or VOL- to highlight
(Sound).
Press CH- to enter Sound submenus.
Press CH+ or CH- to highlight Bass
(Volume, Treble or Balance).
Color
Brightness
Contrast
Sharpness50
Tint
Blue Back
Noise Red.
C. Temp
Off
Normal
50
50
50
00
On
Vol ume
Bass50
Treble
Balance
Smart Sound
Theater
50
50
00
Press VOL+ or VOL- to adjust the
option.
Press M NU repeatedly to remove
E
the menu from the screen or menu will
quit after a few seconds without
further action.
Vol ume
Bass50
Treble
,
Balance
Smart Sound
50
50
00
Theater
31
Colour Television Chassis: M123A
3. Directions for Use
3.27 Stereo and Second Audio Program
Multi-channel Sound (MTS) broadcasts
enhance TV viewing by bringing you
programs with high fidelity stereo sound.
MTS also provides an extra channel called
the Second Audio Program (SAP), which
broadcasters can use to transmit a second
language or for other purposed.
Press MTS on the remote control to
selectSTEREO, MONO, SAP, or MONO+SAP. All the options will be
available only when the current TV
channel is broadcasting that option.
Channels will not always carry
programs that have all the MTS
CATV 6
AUTO
MONO
OR
CATV 22
AUTO
MONO
STEREO
SAP
If STEREO appears on the screen
when you select a channel, stereo
broadcasting is available with the
current TV program. You can hear
sound from the left and right speakers
of the TV.
If the broadcast is not strong or clear,
stereo sound is not available. Press
the MTS button to change to MONO.
This should eliminate the noise.
If MONO appears on the screen when
you choose a channel, Stereo is not
available.
If SAP appears when you select a
channel, Second Audio Program
broadcasting is available for the
current TV program.
Press the MTS button to choose SAP
and you may hear the program in a
different language or some other
If you choose MONO+SAP by
pressing the MTS button, you will
hear both the Second Audio Program
and the regular MONO (monaural or
single-channel) audio simultaneously.
32
Colour Television Chassis: M123A
Figure 4-2
Index:
Note:
4.1 Rear Cover Removal
4.2 Service Position Main Panel
4.3 Side I/O Panel Removal
4.4 Rear Cover Mounting
4. Mechanical Instruction
1. Rear Cover Removal
2. Service Position Main Panel
3. Side I/O Panel Removal
4. Rear Cover Mounting
Figures can deviate slightly from the actual situation, due to different set executions.
1. Remove all fixation screws of the rear cover.
2. Now pull the rear cover backward and remove it.
1. Remove the main panel, by
pushing the two center clips
outward <1>. At the same time
pull the panel away from the
CRT <2>.
2. Disconnect the degaussing coil
and load speaker connector.
3. Move the panel somewhat to
the right and flip it 90 degrees
<3>, with the components
towards the CRT.
1. Remove the complete Side I/O assembly after
.
unscrewing the 2 fixation screws [1].
2. Release the two fixation clamps [2] and lift the
board out of the bracket
Before you mount the rear cover, perform the following checks:
1. Check whether the mains cord is mounted correctly in its guiding brackets.
2. Replace the strain relief of the AC power cord into the cabinet.
3. Check whether all cables are replaced in their original position.
dd
Colour Television Chassis: M123A
etc.
5. Faultfinding and Test Point with Waveform Diagram
5.1 Faultfinding
Fuse Blown
Figure 1 Fuse Blown
Is the drain of
Q801 shorted
to earth?
Ye s
Cheek /
Replace
Q801
No raster
abnormal + B
No
Is D815~D818
OK?
Ye s
Check IC801 and
the peripheral
components.
Figure2 No Raster Abnormal +B
No
Replace
D815~D818
Is the + B,
resistance to earth
ok ?
No
Check the load of
B+
Ye s
Check IC802 and their
peripheral components
34
Ye s
Check Q830
Q831, Q832
Colour Television Chassis: M123A
No
No
No
es
C20
es
g
es
es
No raster +
B Voltage OK
5. Faultfinding and Test Point with Waveform Diagram
5.1 Faultfinding
Replace IC201 Replace Q401
Is the voltage
of in 25 of
IC201 3.3v
No
Is the resistance
to earth of pin25
if IC201 ok
No
Replace
IC201
No picture, dense
noise dots
Is the antenna feed line
or the adapter broken
or unsoldered?
Y
Handing the antenna
fault
Ye s
Ye s
NO
Is the H-out
waveform at PIN
13 of IC201 OK?
Is the output
voltage of IC401
9V?
Figure3 No Raster, +B OK
Figure 4 No Picture dense noise dots
Is the signal at
Pin41, Pin42 of
IC201 ok?
Is the signal at IF
pin of the tuner
Is the signal at Pin
SCL, SDA of tuner ok?
Ye s
yes
No
Check the waveform
at static working
point of Q401.
Check R233,C231
and C233
Y
Y
Y
Check/Replace
I
1
Check the relative
circuit of Q101,
Z101 etc
Is the supply
volta
e of tuner
Ye s
Check Q402
and LOT
Y
Check/Replac
e Tuner
No
Check signal at P57, P58, of
IC201 and replace the
abnormal relative circuit
Ye s
Check EEPROM
35
Check/Replace
power supply
circuit
Colour Television Chassis: M123A
¡
¡
¡
Symptom: raster ok, no
picture, no sound, sparse
noise dots
Apply the pointer of
multimeter at R X 1 K
connect one probe to GND,
use another to touch P42 of
IC101. Are there
interference particles
flashing on the screen?
Ye s
Unsolder a pin of C110, apply the
pointer of multimeter at R X 1 K
, connect the red probe to
GND, use the black probe to
touch B of Q101. Are there
interference particles flashing on
the screen?
,
No
5. Faultfinding and Test Point with Waveform Diagram
5.1 Faultfinding
Figure 5 Sparse noise dots
Is the voltage at
P29, P36 of
IC201 ok?
Bridge a capacitor of 1000pF between
the input and output of Z101. Apply
the pointer of multimeter at R X 1 K
, connect the red probe to GND,
No
and use the black probe to touch B of
Q101 Are there interference particles
flashing on the screen
No
Check and repair
the +9V power
supply
No
Does the IF
pre-amplifier
work
normally?
No
Ye s
Replace the Tuner
Ye s
Replace Z101 (SAW)
Ye s
Check & repair
the IF
pre-AMP. circuit
36
Colour Television Chassis: M123A
¡
,
No sound
5. Faultfinding and Test Point with Waveform Diagram
Is the speaker
Apply the pointer of multimeter at
RX1K
GND, use another to touch P3, P5 of
IC601, Is there interference noise
from the speaker.
Is the waveform
at P47 of IC1001
ok?
connect one probe to
Ye s
No
Replace the speaker
Check/Replace the power
Ye s
supply of IC1001. Then
RESET
No
5.1 Faultfinding
Figure 6 No Sound
Check power
supply of
IC601
NG
Ye s
Is the
BUS ok?
Is it mute at
Pin 1 of
IC601?
No
Check IC201 and
the relative circuit
No
Ye s
Replac
e IC601
Check/Replace
Q604,Q605.
Ye s
No
Check/Replace
Q1001, X1002.
Ye s
Check/Replace IC301
Is the signal at P1 of
IC301 ok?
NG
Is the waveform at
P31 of IC201 ok?
Figure 7 No Vertical Scanning
Ye s
No
Is both +14V and -14V ok?
No
Check signal at P16 of
IC201
No
Replace IC201
No
Check/Replace R405,
R409
D403, D402
Ye s
Check/Replace
IC201,C234
37
Check/Replace R244,
R306
Colour Television Chassis: M123A
g
5. Faultfinding and Test Point with Waveform Diagram
Figure 8 No Picture
TV&AV
haven’t
Picture
TV has Picture. AV hasn’t Picture.
Q905 and its peripheral circuit
Ok
Check RGB signal
Check the waveform of
pin 14 of IC901
5.1 Faultfindin
Check +9V,
+200V
Ye s
Check
Q501~Q503
No
Check P25, P49 of IC201
and the relative circuit
No
Check the logic of
Pin9 Pin10 of IC901
Ye s
Replace IC901
Check R516 ~
R521 etc.
Ok
No
Replace IC201
Check Pin61 of IC201
and peripheral circuit
No Picture
AV has Picture. TV hasn’t Picture.
Is the waveform at
P30 of IC101 ok?
No
Check IC201 and relative
circuit. please reference
the previous page named
Figure 5.
Ye s
Check Q208, Q209
and peripheral
circuit
38
Colour Television Chassis: M123A
f
ķ
5. Faultfinding and Test Point with Waveform Diagram
Figure 9 Tuning Control doesn’t work
Symptom:
Tuning Control
doesn’t work
Press
STANBY key
on R/C. Can
the TV be
turn on and
turn off?
Ye s
Does the channel
number display
on the screen?
Start auto-
search. Is the
BUS ok?
Ye s
No
No
Check the
waveform
at Pin57,
No
Pin58 of
IC201
5.1 Faultfinding
Check the power
supply of IC201.
Are there H & V
flyback pulses at
P12 of IC201
Ye s
Check/Replace
IC201
No
Ye s
Is the
+33V/+5
VA power
supply
ok?
No
No
Check
R408,R406,D404,C422
Check/Repair +33V
power supply
Is there the
short circuit
Ye s
around the
integration
circuit?
Ye s
No
Check/Replace
the tuner
Check/Repair
the integration
Ye s
After auto-search, Can
the searched program
be memorized?
Is there sync
No
pulse at P62
of IC201?
No
Is there sync pulse at B
of Q003?
Ye s
Replace Q003
Is the voltage at
P9 o
IC201ok?
No
Check/Repair +5V
power supply.
No
Check Q210, Q211
and the peripheral
circuit.
Replace IC201
Ye s
39
C201ok?
ķ
Colour Television Chassis: M123A
No
Is there any change on
the voltage level at
P64 of IC201?
Check the remote control
receiver and transmitter.
Ye s
Is the VDD(+5V) at
P9 and P55 of IC201
ok?
Ye s
Is there the 8MHz/5Vp-p
sine wave oscillations at P6
of IC201?
Ye s
No
Is the voltage at P5 of
I
Ye s
Have P5 of IC201 shorted to
GND in an instant. Can the
IC201 work?
No
Check Q002 and
peripheral circuit
No
Are C021, C022
and X001 ok?
Replace the disabled
components
No
Check/Replace
IC201
Ye s
No
Ye s
Check/Repair the reset
circuit.
40
Colour Television Chassis: M123A
6. Block Diagram and I2C
6.1 Block Diagram
4 1
Colour Television Chassis: M123A
6. Block Diagram and I2C
0 V
5.0V
4.5V
4.7V
0 V
2.0V
4.2V
4.5V
5.1V
5.1V
0 V
0 V
2.5V
2.7V
2.6V
8.8V
0 V
2.5V
1.8V
0 V
5.1V
5.1V
0 V
5.2V
2.2V
2.0V
0 V
5.1V
0 V
0 V
1 V
1.5V
6.0V
4.1V
5.1V
0 V
0 V
2.3V
6.2 I2C
0.8V
0.4V
2.4V
14 V
2.4V
0 V
0.8V
6.3V
0 V
6.5V
6.5V
0 V
6.5V
3.0V
13.2V
-11.6V
-13.1V
0.2V
13.5V
3.0V
1.8V
4.8V
4.4V
0 V
0 V
0 V
4.1V
4.5V
2.2V
4.8V
2.5V
2.1V
2.7V
2.6V
2.3V
0 V
2.3V
0 V
3.4V
2.3V
4.6V
3.5V
8.8V
4.9V
1.8V
4.3V
42
0 V
0 V
0 V
0 V
5 V
0 V
4.5 V
4.5 V
Colour Television Chassis: M123A
6. Block Diagram and I2C
6.2 I2C
9 V
0 V
4. 5 V
4. 5 V
4. 5 V
0~9 V
0~9 V
0~9 V
61.5 V
0 V
13.2 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
0 V
5 V
4. 5 V
0 V
43
Colour Television Chassis: M123A
7. Electrical Diagrams
7.1 Power Supplier
WF 1
7. Electrical Diagrams a
7.2
Line Deflection
WF 2
WF 3
44
Colour Television Chassis: M123A
7. Electrical Diagrams
7.3 Frame Deflection
WF 4
WF 5
7. Electrical Diagrams
Tuner IF .
7.4
WF 6
45
Colour Television Chassis: M123A
7. Electrical Diagrams
7.5
MCU,Video IF and Sound IF
WF 7
WF 8
WF 9
WF 10
46
WF 11
Colour Television Chassis: M123A
7. Electrical Diagrams
7.6
VBTSC (Stereo/SAP) Decode
7. Electrical Diagrams
7.7
Video Source Switching
47
Colour Television Chassis: M123A
7. Electrical Diagrams
7.8 Side AV
7. Electrical Diagrams
7.9
Audio Amplifier
48
Colour Television Chassis: M123A
7. Electrical Diagrams
7.10 CRT Panel
49
Colour Television Chassis: M123A
7.11 Faultfinding and Test point with Waveform Diagram
Wave Shape
Freq.
NO .
Wave Shape
Hz
Period
Vpp
WF 1
WF 2
WF 3
WF 4
15.74
kHz
15.74
kHz
15.74
kHz
60
KHz
64
us
64
us
64
us
16.7
ms
2.77
V
10.88
V
925
V
135.7
mV
WF 5
WF 6
50
60
KHz
60
KHz
16.7
ms
16.7
ms
2.95
V
4.94
V
Colour Television Chassis: M123A
7.11. Faultfinding and Test point with Waveform Diagram
1) Apply 120VAC(5V) to mains power input, and Philips standard testing pattern to RF input.
2) Adjust VR830 in STANDARD mode until voltage at TP2 (B+) is 106V 0.5V.
3. RF AGC adjustment
Observe monitor the collector waveform of Q101 with the probe of Oscilloscope as illustration
below. Select channel 2 (>70dB) from the antenna input. Enter D-mode, select menu6 to adjust
RFAGC item until the monitor peak value to 0.8V .
p-p
4. Screen & Focus voltage adjustment
--- Apply pattern signal in normal status, enter D-mode, press TV/AV button to turn off the
vertical output.
--- Adjust the SCREEN switch on the flyback transformer to make a horizontal shining line just
visible on the screen.
---Turn on the vertical output, adjust the FOCUS on the flyback transformer to obtain the
optimum focus.
5. White balance adjustment
1)Apply the black and white pattern in normal status;
2)Alignment of normal colour temperature
---- Change Colour Temperature to normal status
---- Use a colour analyzer to measure the black side of the screen. By changing the value of
RC, GC and BC, set the reading of the colour analyzer to X=284, Y=299.
---- Use a colour analyzer to measure the white side of the screen. By changing the value of
GD, BD, set the reading of the colour analyzer to X=284, Y=299
---- Separately set the brightness and contrast from min. to max., repeat the step 2 and 3 until
The reading of the colour analyzer is correct.
56
Colour Television Chassis: M123A
9. Alignment Procedures
3)Alignment of warm colour temperature
Change Color Temperature to warm status
Use a colour analyzer to measure the black side of the screen. By changing the value of RC-W,
GC-W and BC-W, set the reading of the colour analyzer to X=296, Y=294.
Use a colour analyzer to measure the white side of the screen. By changing the value of GD-W,
BD-W set the reading of the colour analyzer to X=296, Y=294.
Separately set the brightness and contrast from min. to max., repeat the step 2 and 3 until the
reading of the colour analyzer is correct.
4)Alignment of cold colour temperature
Change Color Temperature to cold status
Use a colour analyzer to measure the black side of the screen. By changing the value of RC-C,
GC-C BC-C , set the reading of the colour analyzer to X=279, Y=265.
Use a colour analyzer to measure the white side of the screen. By changing the value of GD-C,
BD-C, set the reading of the colour analyzer to X=279, Y=265.
Separately set the brightness and contrast from min. to max., repeat the step 2 and 3 until the
reading of the colour analyzer is correct
Note: Provided the production line is equipped with the self- White balance adjusting equipment,
white balance of M123A chassis can be adjusted automatically as following: Press IC BUS
button under factory mode, the TV set will adjust automatically.
6. Adjustment of Sub-brightness,
Apply the Grey-scale/Color bar (NTSC signal) to the AV input, in normal status.
Select BRTC to adjust the sub-brightness, until that the 2 dark bar of 8 level Grey scale just can
be seen.
7. PAL picture geometric adjustment
menu 3
HPOS6/HPOS5HZ horizontal center of 60/50 HZ Source
Menu 2
HIGH6/HIGH5(vertical amplitude)
VCEN5/VCEN6(position of vertical center)
VP60/VP50vertical position
VLIN6/VLIN5vertical linearity
VSC6/VSC5V-S Correction
8 initialization
press sound-effect under factory mode, the set will initialize, until OK appears on the screen
which means the initialization is finished. After initialization, the set will quit factory mode
nd
Automatically.
57
Colour Television Chassis: M123A
9. Alignment Procedures
Factory settings
D-mode:
Enter D-Mode by pressing D-Mode ON/OFF key, and then you can enter the D-mode.
S-mode:
Enter S-Mode by pressing VOLUME DOWN key on the unit until the volume decrease to
minimum level, then press the DISPLAY key on the remote handset (don't release the volume key)
and you can enter S- mode.
After enter D-mode or S-mode, press OK, then press program up/down to select menu from
menu 1 to menu 22, press OK to enter the menu, press program up/down to select item, press
volume up/down to adjust the setting. Press D-mode again to quit factory mode.
You can also enter menu 1 to menu 19 directly by pressing digital button 1~9, 0, notebook, CAP,
Display, Sleep, Calendar, System/INS, Favourite, Return, Picture.
Bit 2 STD, IRC,HRC 1: user control 0: under factory mode
Bit 3 1: forbid CATV 95/96/97
Bit 4 \
Bit 5 1: have CCD
Bit 6 1:have V-CHIP
Bit 7 1:as Monitor no TV mode
MOD2Bit 0,Bit 1Speed of searching
Bit 2High sensitivity1yes 0:no
Bit 3Volume control1:PWM
Bit 4AV1: 1yes 0:no
Bit 5AV2: 1yes 0:no
Bit 6YUV: 1yes 0:no
Bit 7
MOD3Bit 0\
Bit 1 \
Bit 2 \
59
Colour Television Chassis: M123A
9. Alignment Procedures
Bit 3/
Bit 4/
Bit 5TVMSP AVL: 1: yes
Bit 6AVMSP AVL1:yes
Bit 7MONO+SAP1yes 0no
OPTBit 0When blue background off (mute pin of CPU): 0: audio mute on 1: audio mute off
Bit 1When blue background off (external mute pin of CPU):
0: audio mute on 1: audio mute off
Bit 2When change channel: 0: picture mute off 1: picture mute on
Bit 3Switch between TV and CATV or change channel in the tune menu 1: picture mute on
Bit 4AFT MUTE 1: ON,
Bit 5Polarity of Tint
Bit 6/
Bit 7/
OPTM1Bit 0TDA98500 0:no 1:yesCan't be set to 1 at the same time
Bit 1MSP34xx 0:no 1:yes
Bit 21: AV audio out mute when volume is zero or mute
Bit 31: decreasing contrast when menu on
Bit 41: OSD don't disappear automatically
Bit 51:biological
Bit 60: CH LOCK W/O V-CHIP
Bit 7When turn on 0:child lock off 1:child lock on
OPTM2Bit 0/
Bit 1Power on mode: 00: standby 01:previous
Bit 2 10&11: force power on
Bit 3Hotel mode 1:on 0: off
Bit 4Power on under hotel mode
Bit 500: TV | 01: Video1 | 02: TV2 | 03: Last
Bit 61: under factory mode turn off the set by the remote or power off, then turn on or power
on, the set enter factory mode
Bit 71: D-MODE
HDCNT
HSTOP
Menu 8 (Remote key: 8 )
ItemRemark
RFAGCRFAGC [12H, bit 5 ~ 0]
BRTSSub brightness for SECAM
OSDHorizontal position of OSD
OSDFOSD PLL DATA
CCD OSDHorizontal position of CCD OSD
CCD OSDFPLL DATA of CCD OSD
TXCXOSD intensity when maximum contrast
RGCNOSD intensity when minimum contrast
60
Colour Television Chassis: M123A
9. Alignment Procedures
Menu 9(Remote key:9)
ItemRemark
V01Volume 1
V25Volume 25
V50Volume 50
V100Volume 100
VOLMAXMax volume under hotel mode
CURTCENCenter of the curtain
VOLXOutput gain of PIN28 of TMPA8823 or MSP34x5
PWTMWhen use PWM to mute and no sound when changing channel, this item should be
minimum as posible
Menu 10(Remote key: 0)
Item Remark
MDOE4Bit 0TV Color system AUTO1yes 0no
Bit 1TV Color system NTSC3581yes 0no
Bit 2TV Color system PALM1yes 0no
Bit 3TV Color system PALN1yes 0no
Bit 4AV Color system AUTO1yes 0no
Bit 5AV Color system NTSC3581yes 0no
Bit 6AV Color system PALM1yes 0no
Bit 7AV Color system PALN11yes 0no
MDOE5Bit 0 English: 1yes 0no
Bit 1 French: 1yes 0no
Bit 2 Portuguese: 1yes 0no
Bit 3 Spanish : 1yes 0no
Bit 4 AV Color system PAL44311yes 0no
Bit 5 AV Color system NTSC44311yes 0no
Bit 6 AV AUTO1:AUTO1(PAL443NTSC358NTSC443)
0:AUTO2(NTSC358PALMPALN)
Bit 7 \
MDOE6Bit 01:auto search function of the menu key on the front panel
Bit 11: curtain when turn on the set
Bit 21: curtain when turn off the set
Bit3~ 7V-mute timing when changing channel(01H = 8ms) max :248ms
MDOE7 Bit 0 When sound mode change
Bit 1 11:change to the corresponding mode and ODS display automatically
01: change to the corresponding mode and ODS doesn't display
00,10: change to MONOODS doesn't display
Bit 2 10detect BTSC and Korea stereo automatically
Bit 3 01force BTSC 11force Korea stereo
Bit 4 FINE, 1:yes 0no
Bit 5 50Hz block 1:yes 0no
Bit 6 1: contrast change when power on
Bit 7 \
61
Colour Television Chassis: M123A
9. Alignment Procedures
MDOE8Bit 0America V-CHIP standard 1yes 0no
Bit 1Canadian V-CHIP 1yes 0no
Bit 2UNRATED1yes 0no
Bit 3NO RATING1yes 0no
Bit 4 ~Bit 7 Time setting for curtain when turn on the set
MDOE9Bit 0 ~Bit 2 N/A
Bit 3S-VIDEO ,0:parallel to AV1 1: parallel to AV2
Bit 41:sound effect w/o mpx (MSP3465)
Bit 5 ~Bit 7 N/A
Menu 12(Remote key: CAP)
Item Remark
OSD2OSD Horizontal Position
OSDF2OSD PLL DATA except
PYNXNormal H.SYNC max
PYNNNormal H.SYNC min
PYXSSearch H.SYNC max
PYNSSearch H.SYNC min
Menu 13 (Remote key: Display )
Item Remark
CLTMTV mode
CLVOVideo mode
CLVSS-video mode
Bit 2 ~ 0 YDL [15H, bit 2 ~ 0] (-40ns~240ns)
Bit 4 ~ 3 NTSC matrix [03H, bit 7 ~ 6] (N1,N2,DVD)
Bit 5C gamma [02H, bit 7] (color gamma on/off)
Bit 6 P/N ID [17H, bit 4] (PAL/NTSC killer sensit.)
Bit 7 FID [17H, bit 3] (Killer off)
ABL Bit 1 ~ 0 ABL gain [16H, bit 5 ~ 4]
Bit 3 ~ 2 ABL start point [16H, bit 7 ~ 6]
Bit 4 WPS [00H, bit 7]
Bit 5 OSD ABCL [16H, bit 3]
DCBS Bit 1 ~ 0 Black stretch [15H, bit 4 ~ 3]
Bit 3 ~ 2 Y gamma [15H, bit 6 ~ 5]
Bit 5 ~ 4 OSD level [16H, bit 1 ~ 0]
Bit 7 Blank switch [0CH, bit 7]
FLG0Bit 0 Over modulation [13H, bit 5]
Bit 1 Aft window size [13H, bit 6]
Bit 2 Buzz reducer [13H, bit 7]
Bit 3 Audio gain switch [14H, bit 7]
Bit 4
Bit 5
Bit 6
Bit 7 1: VCO adjust automatically when changing channel
FLG1Bit 0 CW SW [06H, bit 7], control PIN26,
Bit 1 Slice level [1EH, bit 6]
Bit 2 Mix gain [15H, bit 7]
Bit 3 V ramp bias [1DH, bit 4]
Bit 4
Bit 5
Bit 6
Bit 7 SLO f0 shift(test only)
62
Colour Television Chassis: M123A
9. Alignment Procedures
Menu 14(Remote key: SLEEP)
ItemRemark
HAFCBit 1 ~ 0AFC gain (TV mode) [1CH, bit 5 ~ 4]
Bit 3 ~ 2AFC gain (AV mode) [1CH, bit 5 ~ 4]
AGCC
NOIS
ONTMV-mute timing when power on (01H = 16ms)
NSHPDecreased level of sharpness when noise reduction is on
PVLVL X-ray protection start point (00H 0V & FFH 5V)
PLMT (01H = 8ms)
Menu 15 (Remote key: CALENDAR)
ItemRemark
RC-CR cut-off setting (for cool color temperature)
GC-CG cut-off setting (for cool color temperature)
BC-CB cut-off setting (for cool color temperature)
GD-CG drive setting (for cool color temperature)
BD-CB drive setting (for cool color temperature)
Menu 16 (Remote key: SYSTEM/INS)
Item Remark
RC-WR cut-off setting (for warm color temperature)
GC-WG cut-off setting (for warm color temperature)
BC-WB cut-off setting (for warm color temperature)
GD-WG drive setting (for warm color temperature)
BD-WB drive setting (for warm color temperature)
YUVGCYUV R cut-off
YUVBCYUV B cut-off
Menu 17 (Remote key: FAV )
ItemRemark
D-COLDynamic color
D-BRIDynamic brightess
D-CONDynamic contrast
D-SHPDynamic sharpness
Menu 18 (Remote key: RETURN)
ItemRemark
S-COLStandard color
S-BRIStandard brightess
S-CONStandard contrast
S-SHPStandard sharpness
SEG_POINT1Highest frequency of VHFL
SEG_POINT2Highest frequency of VHFH
DATA_VLVHFL bandswitchBB
DATA_VHVHFH bandswitchBB
DATA_UFUHF bandswitchBB
SPE_POS1The channel number treated specially
SPE_DATA1Bandswitch in which the special channelBB
SENSI_ON
SENSI_OFF
VOL_MAIVolume Loudspeaker
GATECarrier-Mute
VOL-OUTAV output gain
AV GAINAV input Gain
Note:
Provided the production line is equipped with the self-adjusting equipment, The adjusted
item should be based on the result by such equipment.
There's difference between PAL geometric/OSD adjustment and NTSC geometric/OSD
adjustment. PAL adjustment must be done before NTSC adjustment.
64
Colour Television Chassis: M123A
10. Circuit Description
(1) Tuner
The function of the tuner is to select the channel to be received and suppress the interference, to amplify the high
frequency signal, to improve the receiving sensitivity and SNR, to generate PIF signal through frequency conversion.
(2) IF Channel
The IF Channel mainly ensures the sensitivity and selectivity of the complete machine. The IF AMP integrated in
TMPA8802 is made up of the third-stage dual-differential amplifier with gain value above 70db, SNR of 55dB and
bandwidth of 6MHZ. The video demodulation circuit is made from the built-in PLL Sync Detector. The spectrum of the
demodulation carrier is unitary and not affected by the content of the video signal. The tuner features stable receptivity
while the signal output from the video detector features high fidelity.
PLL built-in TMPA8802 generates 45.75MHz demodulation reference signal for sync detector to demodulate the video
signal, which is called 'PLL sync demodulation'.
(3) Chroma Signal Decoding Circuit
Through the external BPF (band-pass filter) to single out the chroma signal and burst signal within the range of
fsc+1.3MHZ from among the composite signals output from the video detector. After being amplified by ACC, the chroma
signal is fed into the synchronous detector to be demodulated to obtain the color difference signal.
(4) Luminance Channel and Matrix Circuit
The luminance channel of TMPA8802 has the black stretch circuit to make the 'darkish' ingredient of the picture turn '
atrous ', thus improve the contrast and depth perception of the picture. It also has the delayed definition-enhanced circuit
to enable the details of the picture more vivid. The luminance signal (Y) is sent into the matrix circuit after being delayed
for 0.6 s and composes R/G/B signal combined with three color-difference signals (B-Y, R-Y, G-Y).
(5) Sync Separation and Deflection Processing Circuit
TMPA8802 has the 32fh PLL (fh = horizontal frequency). In accordance with the frequency and phase information carried
by composite sync signal, PLL generates scan clock signal with 32fh and horizontal drive pulse will be obtained through
32fh countdown. Use integrating circuit to extract vertical sync signal from the composite sync pulse to control the
counter for vertical countdown. The counter countdown the 32fh clock signal, thus vertical frequency sync pulses under
various systems can be obtained.
TMPA8802 includes the vertical SW former (sawtooth wave former) and can control the gain and linear of SW (sawtooth
wave). Therefore, the vertical amplitude control and the linearity correction of the scanning raster can be achieved by
setting the data with remote controller via I C bus input.
2
(6) Sound Channel
The second SIF goes via a filter of 4.5MHz, to MSP3425. Then decoded by MSP3425, the second SIF turns into sound signal
of MONO, STEREO, and SAP. The sound signal processed by inner sound effect, input to TDA7057AQ and drive the
speakers to restore the sound. MONO, STEREO, SAP and sound effect processing modes are adjusted via I C bus.
2
(7) Remote Control System
The MCU (TMPA8802) of an 8-bit CPU and the software constitute the control core of the remote control system, mainly
accomplishing the following functions: decoding remote control commands; auto search memory; displaying characters
& patterns; switching the signal source between AV and TV.
Infrared remote control transmitter is composed of the special single chip and the keyboard system. The transmitter
translates the commands represented by R/C keys into function codes, and separately demodulates the 37.9KHZ carrier
and 940nm infrared ray twice to generate remote infrared transmitting signal delivered by infrared LED. The remote
control distance isn't less than 8 meters.
With infrared LED the remote control system converse the optical signal into electrical signal, which will be amplified and
decoded to restore the codes of the remote control commands for MCU to analyze and execute.
The remote control system has three operating modes: user-controlled mode (U-mode), service mode (S-mode) and
factory default mode (D-mode). U-mode includes the following functions: channel search and memory; channel selecting;
volume control, brightness adjustment, contrast and color adjustment. S-mode and D-mode are mainly used in
production, checking & repairing, including the following functions: horizontal & vertical centering control, vertical
amplitude and linearity adjustment; setting the adjusting range for volume, contrast, brightness, tint and color;
geometric adjustment and white balance adjustment.
(8) CRT Drive Circuit
Adopting the cascode to amplify voltage and current of R/G/B signal, the CRT drive circuit is able to demodulate the
cathode beam current of the CRT. The R/G/ B signal input into the cascode circuit is of negative polarity.
(9) Power Supply Circuit
The circuit supplies various stabilized operating voltages and safeguard protections.
65
Colour Television Chassis: M123A
11. List of Abbreviations
2CS 2 Carrier (or Channel) Stereo
ACI Automatic Channel Installation: algorithm that installs TV sets directly from cable
network by means of a predefined TXT page
ADC Analogue to Digital Converter
AFC Automatic Frequency Control: control signal used to tune to the correct frequency
AFT Automatic Fine Tuning
AGC Automatic Gain Control: algorithm that controls the video input of the feature box
AM Amplitude Modulation
APAsia Pacific
AR Aspect Ratio: 4 by 3 or 16 by 9
ATS Automatic Tuning System
AV External Audio Video
AVL Automatic Volume Level
BC-PROT Beam Current Protection
BCL Beam Current Limitation
B/G Monochrome TV system. Sound carrier distance is 5.5 MHz
BLCINFORMATION Black current information
BTSC Broadcast Television Standard Committee. Multiplex FM stereo sound system, riginating
from the USA and used e.g. in LATAM and AP-NTSC countries
B-TXT Blue teletext
CC Closed Caption ComPair Computer aided rePair
CRT Cathode Ray Tube or picture tube
CSM Customer Service Mode
CTI Colour Transient Improvement: manipulates steepness of chroma transients
CVBS Composite Video Blanking and Synchronisation
DAC Digital to Analogue Converter
DBE Dynamic Bass Enhancement: extra low frequency amplification
DBX Dynamic Bass Expander
D/K Monochrome TV system. Sound carrier distance is 6.5 MHz
DFU Direction For Use: description for the end user
DNR Dynamic Noise Reduction DSP Digital Signal Processing
DST Dealer Service Tool: special remote control designed for dealers to enter e.g. Service
mode
DVD Digital Versatile Disc
EEPROM Electrically Erasable and Programmable Read Only Memory
EHT Extra High Tension
EHTINFORMATION Extra High Tension information
EU Europe
EW East West, related to horizontal deflection of the set
EXT External (source), entering the set via SCART or Cinch
FBL Fast Blanking: DC signal accompanying RGB signals
FILAMENT Filament of CRT
FLASH Flash memory
FM Field Memory
66
Colour Television Chassis: M123A
11. List of Abbreviations
FM Frequency Modulation
HA Horizontal Acquisition: horizontal sync pulse coming out of the HIP Circuit Description
GB 69 L01.2A 9.
HFB Horizontal Flyback Pulse: horizontal sync pulse from large signal deflection
HP Headphone
Hue Colour phase control for NTSC (not the same as 'Tint')
I Monochrome TV system. Sound carrier distance is 6.0 MHz
I2C Integrated IC bus
IF Intermediate Frequency
IIC Integrated IC bus Interlaced Scan mode where two fields are used to form one frame. Each
field contains half the number of the total amount of lines. The fields are written in “pairs”,
causing line flicker.
ITV institutional TV
LATAM Latin America
LED Light Emitting Diode
L/L' Monochrome TV system. Sound carrier distance is 6.5 MHz. L' is Band I, L is all bands
except for Band I
LNA Low Noise Amplifier
LS Large Screen
LS Loudspeaker
LSP Large signal panel
M/N Monochrome TV system. Sound carrier distance is 4.5 MHz
MSP Multi-standard Sound Processor:
ITT sound decoder
MUTE Mute-Line
NC Not Connected
NICAM Near Instantaneous Compounded Audio Multiplexing. This is a digital sound system,
mainly used in Europe.
NTSC National Television Standard Committee. Colour system mainly used in North America
and Japan. Colour carrier NTSC M/N = 3.579545 MHz, NTSC 4.43 = 4.433619 MHz (this is a
VCR norm, it is not transmitted off-air)
NVM Non Volatile Memory: IC containing TV related data e.g. alignments
OB Option Byte
OC Open Circuit
OSD On Screen Display
PAL Phase Alternating Line. Colour system mainly used in West Europe (colour carrier =
4.433619 MHz) and South America (colour carrier PAL M = 3.575612 MHz and PAL N =
3.582056 MHz)
PCB Printed Circuit board
PIP Picture In Picture
PLL Phase Locked Loop. Used for e.g.
FST tuning systems. The customer can give directly the desired frequency
POR Power-On Reset Progressive Scan Scan mode where all scan lines are displayed in one
frame at the same time, creating a double vertical resolution.
PTP Picture Tube Panel (or CRT-panel)
RAM Random Access Memory
67
Colour Television Chassis: M123A
11. List of Abbreviations
RC Remote Control handset
RC5 Remote Control system 5, signal from the remote control receiver
RGB Red Green Blue
ROM Read Only Memory
SAM Service Alignment Mode
SAP Second Audio Program
SC Sandcastle: pulse derived from sync signals
S/C Short Circuit
SCAVEM Scan Velocity Modulation
SCL Serial Clock
SDA Serial Data
SDM Service Default Mode
SECAM SEequence Couleur Avec Memoire. Colour system mainly used in France and East
Europe. Colour carriers = 4.406250 MHz and 4.250000 MHz
SIF Sound Intermediate Frequency
SS Small Screen
STBY Standby
SVHS Super Video Home System
SW Software
THD Total Harmonic Distortion
TXT Teletext
_P Microprocessor
UOC Ultimate One Chip
VA Vertical Acquisition
VBAT Main supply voltage for the deflection stage (mostly 141 V)
V-chip Violence Chip
VCR Video Cassette Recorder
WYSIWYR What You See Is What You Record: record selection that follows ma picture and
sound
XTAL Quartz crystal
YC Luminance (Y) and Chrominance (C) signal