Colour Television Chassis: M123A 1. Technical Specifications, Connections and Chassis Overview Index: Sound systems : FM-mono: FM-stereo 1. Technical Specifications. A/V connections : NTSC 3.58 2. Connections. Channel selections :TV:2-69,CATV:2-13,A-W, 3. Chassis Overview. W+1~W+84,A-5~A-1,5A Note: Aerial input : 75OHM, 1VP-P Below described specifications are not valid for one product, but for the whole product 1.1.2 Miscellaneous...
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Colour Television Chassis: M123A 1.3 Chassis Review 7.1 Power Supplier CRT PANEL 7.2 Line Deflection Side 7.3 Frame Deflection Panel Main 7.4 Tuner IF Chassis Panel 7.5 MCU, Video IF and Sound IF 7.6 BTSC (Stereo/SAP) MSP PANEL Decode 7.7 Video Source Switching...
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.
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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.
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:...
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.
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Colour Television Chassis: M123A 3. Directions for Use 3.3 Basic to VCR (ACCESSORY)Connection The basic Antenna/Cable TV to Accessory DVD INPUT (VCR, DVD Player, etc.) to TV connection is shown at right. For other hookups (such as those with Cable Boxes), refer to the owner s manual of the Cable Box or other AUDIO...
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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.
Colour Television Chassis: M123A 3. Directions for Use 3.5 Remote Control TV/AV Button STANDBY Button Press to select TV channels or the Audio Press to turn the TV on or off(standby). /Video IN channels(AV1/S-VIDEO, AV2, You also can turn on the TV by pressing or YUV).
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Colour Television Chassis: M123A 3. Directions for Use 3.6 Language Language You can set the TV s on-screen menu to be in English, or Spanish. Press MENU to see the menu. Color Brightness Contrast Press VOL+ or VOL- to highlight Sharpness Language Tint...
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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.
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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.
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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.
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. Color Brightness Contrast Press MENU to see the menu.
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 TV s memory. Using the Number buttons, select the channel you wish to add or erase. Color Press MENU to see the menu.
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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. Color Brightness Contrast Press CH- to enter (Picture) Sharpness Color Submenu.
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 TV s video settings for different types of programs and viewing conditions.
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Colour Television Chassis: M123A 3. Directions for Use 3.14 Colck Follow these steps to set your TV s clock. Press MENU to see the menu. Color Brightness Press VOL+ or VOL- to highlight Contrast Sharpness (Timer). Off Time Tint Blue Back 0:00 Noise Red.
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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. Color Brightness Contrast Press MENU to see the menu.
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. Color Press MENU to see the menu. Brightness Contrast Sharpness...
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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, on- screen text boxes will show dialog, conversation, and activity during TV Color Brightness...
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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.
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 MPAA Ratings TV Ratings c o n t e n t a d v i s o r i e s a n d b l o c k (Motive Picture Association of America) (TV broadcaster) objectionable content (offensively...
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. Color Brightness Contrast Press MENU to see the menu.
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. s first look at the MPAA Rating options Color Brightness...
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. MPAA rating TV parental guidelines Block unrated Press VOL+ or VOL- to highlight MPAA rating Block No Rating (Feature).
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. Color Brightness Contrast Press VOL+ or VOL- to highlight Sharpness Language Tint (Feature).
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. Color Brightness Contrast Press VOL+ or VOL- to highlight Sharpness Language Tint...
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. Color Press MENU to see the menu. Brightness Contrast Sharpness Press VOL+ or VOL- to highlight Tint Volume...
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. Color Brightness Contrast Press MENU to see the menu.
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. CATV 6 AUTO MTS also provides an extra channel called MONO the Second Audio Program (SAP), which CATV 22...
Colour Television Chassis: M123A 4. Mechanical Instruction Index: 1. Rear Cover Removal 2. Service Position Main Panel 3. Side I/O Panel Removal 4. Rear Cover Mounting Note: Figures can deviate slightly from the actual situation, due to different set executions. 4.1 Rear Cover Removal 1.
Colour Television Chassis: M123A 5. Faultfinding and Test Point with Waveform Diagram 5.1 Faultfinding Fuse Blown Figure 1 Fuse Blown Is the drain of D815~D818 Replace Q801 shorted D815~D818 to earth? Check IC801 and Cheek peripheral Replace components. Q801 Figure2 No Raster Abnormal +B raster abnormal + B...
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Colour Television Chassis: M123A 5. Faultfinding and Test Point with Waveform Diagram 5.1 Faultfinding No raster Replace IC201 Replace Q401 B Voltage OK Yes Check the waveform H-out Is the voltage Check Q402 waveform at PIN static working of in 25 of and LOT 13 of IC201 OK? point of Q401.
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Colour Television Chassis: M123A 5. Faultfinding and Test Point with Waveform Diagram Symptom: raster ok, no picture, no sound, sparse 5.1 Faultfinding noise dots Figure 5 Sparse noise dots Apply the pointer of multimeter at R X 1 K , connect one probe to GND, use another to touch P42 of Is the voltage at...
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Colour Television Chassis: M123A 5. Faultfinding and Test Point with Waveform Diagram No sound 5.1 Faultfinding Is the speaker Replace the speaker Figure 6 No Sound Replac e IC601 Apply the pointer of multimeter at RX1K connect one probe to Is it mute at Check power...
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Colour Television Chassis: M123A 5. Faultfinding and Test Point with Waveform Diagram 5.1 Faultfinding Figure 8 No Picture Check Check R516 ~ Check +9V, TV&AV Q501~Q503 R521 etc. +200V haven’t Picture Check P25, P49 of IC201 Replace IC201 Check RGB signal and the relative circuit TV has Picture.
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Colour Television Chassis: M123A 5. Faultfinding and Test Point with Waveform Diagram 5.1 Faultfinding Figure 9 Tuning Control doesn’t work Check the power Symptom: supply of IC201. Check Tuning Control Are there H & V R408,R406,D404,C422 doesn’t work flyback pulses at P12 of IC201 Press STANBY key...
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Colour Television Chassis: M123A Is there any change on Check the remote control receiver and transmitter. the voltage level at P64 of IC201? Is the VDD(+5V) at Check Q002 and P9 and P55 of IC201 peripheral circuit Is there the 8MHz/5Vp-p Are C021, C022 sine wave oscillations at P6 and X001 ok?
Colour Television Chassis: M123A 9. Alignment Procedures 1. FLOWCHART OF ALIGNMENT PROCEDURE S c r e e n & White Adjustment f o c u s Balance Adjustment Adjustment Center & Amplitude Pincushion correction & Sub- and OSD adjustment H o r i z o n t a l A m p l i t u d e brightness adjustment Adjustment...
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.
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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.
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Colour Television Chassis: M123A 9. Alignment Procedures Menu 4 (Remote key: 4) Item Remark CNTX Maximum contrast CNTN Minimum contrast BRTX Maximum brightness BRTN Minimum brightness COLX Maximum color COLN Minimum color TNTX Maximum tint level TNTN Minimum tint level Menu 5(Remote key: 5) Item Remark...
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Colour Television Chassis: M123A 9. Alignment Procedures Bit 3 Bit 4 Bit 5 TV MSP AVL: 1: yes Bit 6 AV MSP AVL 1:yes Bit 7 MONO+SAP 1 yes 0 no Bit 0 When blue background off (mute pin of CPU): 0: audio mute on 1: audio mute off Bit 1 When blue background off (external mute pin of CPU): 0: audio mute on 1: audio mute off...
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Colour Television Chassis: M123A 9. Alignment Procedures Menu 9(Remote key:9) Item Remark Volume 1 Volume 25 Volume 50 V100 Volume 100 VOLMAX Max volume under hotel mode CURTCEN Center of the curtain VOLX Output gain of PIN28 of TMPA8823 or MSP34x5 PWTM When use PWM to mute and no sound when changing channel, this item should be minimum as posible...
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Colour Television Chassis: M123A 9. Alignment Procedures MDOE8 Bit 0 America V-CHIP standard 1 yes 0 no Bit 1 Canadian V-CHIP 1 yes 0 no Bit 2 UNRATED 1 yes 0 no Bit 3 NO RATING 1 yes 0 no Bit 4 ~Bit 7 Time setting for curtain when turn on the set MDOE9 Bit 0 ~Bit 2 N/A...
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Colour Television Chassis: M123A 9. Alignment Procedures Menu 14(Remote key: SLEEP) Item Remark HAFC Bit 1 ~ 0 AFC gain (TV mode) [1CH, bit 5 ~ 4] Bit 3 ~ 2 AFC gain (AV mode) [1CH, bit 5 ~ 4] AGCC NOIS ONTM...
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Colour Television Chassis: M123A 9. Alignment Procedures Menu 19 (Remote key: PICTURE) Item Remark M-COL Mild colour M-BRI Mild brightess M-CON Mild contrast M-SHP Mild sharpness Menu 20: no shortcut key Item Remark SEG_POINT1 Highest frequency of VHFL SEG_POINT2 Highest frequency of VHFH DATA_VL VHFL bandswitch BB DATA_VH...
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.
Colour Television Chassis: M123A 11. List of Abbreviations 2 Carrier (or Channel) Stereo Automatic Channel Installation: algorithm that installs TV sets directly from cable network by means of a predefined TXT page Analogue to Digital Converter Automatic Frequency Control: control signal used to tune to the correct frequency Automatic Fine Tuning Automatic Gain Control: algorithm that controls the video input of the feature box Amplitude Modulation...
Colour Television Chassis: M123A 11. List of Abbreviations Frequency Modulation Horizontal Acquisition: horizontal sync pulse coming out of the HIP Circuit Description GB 69 L01.2A 9. Horizontal Flyback Pulse: horizontal sync pulse from large signal deflection Headphone Colour phase control for NTSC (not the same as 'Tint') Monochrome TV system.
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Colour Television Chassis: M123A 11. List of Abbreviations Remote Control handset Remote Control system 5, signal from the remote control receiver Red Green Blue Read Only Memory Service Alignment Mode Second Audio Program Sandcastle: pulse derived from sync signals Short Circuit SCAVEM Scan Velocity Modulation Serial Clock...
Colour Television Chassis: M123A 12. Part List Item No. Description Quantity Designator Remarks 06-0F3046-B004X 11-0BC337-0BX TRANSISTOR (NPN) BC337-40 1 Q1501 13-00AS12-13B IC AS1213B 1 IC1501 14-IRE05B-XX0 IR EMITTING DIODE TSAL6200 1 D1501 18-CB0221-JNX RES. C.F. 220 OHM 1/6W +/-5% 1 R1503 18-CB0229-JNX RES.
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Colour Television Chassis: M123A 12. Part List Item No. Description Quantity Designator Remarks 59-130460-00X RUBBER PAD (25mmX7mm) FOR FRONT CAB.(FOOTING) 59-312160-000 SPEAKER RUBBER CUSHION MTG SPK 62-216340-0UA HOLDER POWER CORD HIPS-KINGFA 113(VO) 62-377180-0HA CONECTOR 63-B40150-AB4 S/T SCREW B 4 X 15 AB MTG CRT BKT &...
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Colour Television Chassis: M123A 12. Part List Item No. Description Quantity Designator Remarks 41-WJ0080-B00 WIRE BARE JUMPER 8 MM 1 J835 41-WJ0080-B00 WIRE BARE JUMPER 8 MM 1 J836 41-WJ0085-B00 WIRE BARE JUMPER 8.5MM 1 J812 41-WJ0090-B00 WIRE BARE JUMPER 9MM 1 J805 41-WJ0100-B00 WIRE BARE JUMPER 10MM...
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Colour Television Chassis: M123A 12. Part List Item No. Description Quantity Designator Remarks 66-382330-0B7 RIVET 2.0X3.7X3.5 FOR P801 67-H35984-5A0 HEAT SINK FOR Q801 71-DYP000-TZ1 HEAT SINK LABEL STICK ON HEAT SINK 90-209770-SR1 SILICONE GREASE G-746 22-PTC200-XX1 PTC 20 OHM +/-20% 1 RT801 41-WJ0175-B00 WIRE BARE JUMPER 17.5MM...
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