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The parts in this equipment have the specific
characters of incombustibility and withstand
voltage for safety. Therefore, the part which is
replaced should be used the part which has the
same character.
Especially as to the important parts for safety
which is indicated in the circuit diagram or the
table of parts as a        mark, the designated parts
must be used.

SERVICING NOTICES ON CHECKING

6. AVOID AN X-RAY

1. KEEP THE NOTICES

As for the places which need special attentions,
they are indicated with the labels or seals on the
cabinet, chassis and parts. Make sure to keep the
indications and notices in the operation manual.

2. AVOID AN ELECTRIC SHOCK

There is a high voltage part inside. Avoid an
electric shock while the electric current is flowing.

3. USE THE DESIGNATED PARTS

4. PUT PARTS AND WIRES IN THE

ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING

There are parts which use the insulation material
such as a tube or tape for safety, or which are
assembled in the condition that these do not
contact with the printed board. The inside wiring is
designed not to get closer to the pyrogenic parts
and high voltage parts. Therefore, put these parts
in the original positions.

5. TAKE CARE TO DEAL WITH THE

CATHODE-RAY TUBE

In the condition that an explosion-proof cathode-
ray tube is set in this equipment, safety is secured
against implosion. However, when removing it or
serving from backward, it is dangerous to give a
shock. Take enough care to deal with it.

Safety is secured against an X-ray by consider-
ing about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage pe-
ripheral circuit, use the designated parts and
make sure not modify the circuit.
Repairing except indicates causes rising of high
voltage, and it emits an X-ray from the cathode-
ray tube.

7. PERFORM A SAFETY CHECK AFTER

SERVICING

Confirm that the screws, parts and wiring which
were removed in order to service are put in the
original positions, or whether there are the
portions which are deteriorated around the
serviced places serviced or not. Check the
insulation between the antenna terminal or
external metal and the AC cord plug blades.
And be sure the safety of that.

(INSULATION CHECK PROCEDURE)

1.
2.

3.

4.

Unplug the plug from the AC outlet.
Remove the antenna terminal on TV and turn
on the TV.
Insulation resistance between the cord plug
terminals and the eternal exposure metal
[Note 2] should be more than 1M ohm by
using the 500V insulation resistance meter
[Note 1].
If the insulation resistance is less than 1M
ohm, the inspection repair should be
required.

[Note 1]

If you have not the 500V insulation
resistance meter, use a Tester.

[Note 2]

External exposure metal: Antenna terminal

A1-1

HOW  TO  ORDER  PARTS

Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER

The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be

     found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION

You can find it in your SERVICE MANUAL.

IMPORTANT

Inferior silicon grease can damage IC's and transistors.
When replacing an IC's or transistors, use only specified silicon grease (YG6260M).
Remove all old silicon before applying new silicon.

• 

Hotel lock can be cancelled by following steps 1-2.

1.

2.

TO CANCEL HOTEL LOCK

Press and hold the CHANNEL UP button on the TV, and press the POWER button on the remote
control simultaneously.
Press the SET +/– button to select the HOTEL LOCK ALL CLEAR mode, then press the ENTER button.
The "OK" indicator appears for 4 seconds on the screen.

Содержание 21MT9

Страница 1: ...SERVICE MANUAL Design and specifications are subject to change without notice 21MT9A COLOR TELEVISION RECEIVER ORIGINAL MFR S VERSION B...

Страница 2: ...the circuit Repairing except indicates causes rising of high voltage and it emits an X ray from the cathode ray tube 7 PERFORM A SAFETY CHECK AFTER SERVICING Confirm that the screws parts and wiring w...

Страница 3: ...OMPONENTS LOCATION GUIDE BLOCK DIAGRAM PRINTED CIRCUIT BOARDS MAIN CRT T TEXT FRONT AV JACK SCHEMATIC DIAGRAMS MICON TUNER IF CHROMA SOUND AMP SOUND POWER DEFLECTION CRT JACK VIDEO R G B SWITCH FRONT...

Страница 4: ...2 S1 S10 E5 E12 S11 S41 E21 E69 Tuning System Frequency syn Voltage syn Others G 8 Preset Channel 110 channels G 9 Intermediate Frequency Picture fP 38 90 MHz MHz MHz Sound fS 34 47 MHz MHz MHz fP fS...

Страница 5: ...ance Type Front Video Input RCA 8 3 Front Audio Input RCA 8 3 Rear Video Input RCA 8 3 Rear Audio Input RCA 8 3 Rear Video Output RCA 8 3 Rear Audio Output RCA 8 3 21 Pin x DC Jack Center Ear Phone Ja...

Страница 6: ...orner 3 Edges 6 Surfaces Height 25cm 31cm 46cm 62cm 80cm Container Stuffing 304 Sets 40 container G 30 Accessories Owner s Manual W Guarantee Card English AC Plug Adapter Channel Film Battery UM 4 x 2...

Страница 7: ...t PAL SECAM 1 Time Set Volume Up 2 Mute Volume Down 3 CH Skip CH Call 4 CH1 CH2 CH Down 5 Channel CH Up 6 Text Mix TV CH Down Page Down 7 Display Cancel CH Up Page Up 8 Initial Page 9 Store Program 10...

Страница 8: ...ip up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support Refer to Fig 1 2 2 DISASSEMBLY INSTRUCTIONS GND on the CRT Screwdriver Alligator Clip Support CRT GND...

Страница 9: ...a blower type IC desoldering machine Refer to Fig 2 2 2 Fig 2 2 NOTE Do not add the rotating and the back and forth directions force on the IC until IC can move back and forth easily after desoldering...

Страница 10: ...in tip Soldering Iron NOTE When the IC leads are bent during soldering and or repairing do not repair the bending of leads If the bending of leads are repaired the pattern may be damaged So be always...

Страница 11: ...it value 16 x 16 x hundreds digit value 16 x tens digit value ones digit value NOTE FOR THE REPLACING OF MEMORY IC If a service repair is undertaken where it has been required to change the MEMORY IC...

Страница 12: ...and press the channel button 2 on the remote control to select AKB The Fig 2 3 appears on the display Press the channel button 2 on the remote control to select the R BIAS Using the VOL UP DOWN on the...

Страница 13: ...emote control to set to the AV mode Then perform the above adjustment 2 7 85 0 ELECTRICAL ADJUSTMENTS 2 8 CONTRAST 1 2 3 4 Receive the monoscope pattern Activate the adjustment mode display of Fig 2 1...

Страница 14: ...o Input Press the AV button on the remote control to set to the AV mode Then perform the above adjustments 2 5 D1 3 TV OSD H B Fig 2 7 A 2 13 OSD HORIZONTAL 1 2 3 4 Using the remote control set the br...

Страница 15: ...sting the pair of 6 pole magnets D2 1 Tighten the screw for the magnet Refer to the adjusted CRT for the position Refer to Fig 3 1 If the deflection yoke and magnet are in one body untighten the screw...

Страница 16: ...D3 1 MAJOR COMPONENTS LOCATION GUIDE TP501 TU001 CP101 IC201 CRT PCB MAIN PCB FOCUS VOLUME SCREEN VOLUME FB401 J753 J752 L204 TP202 VR501 TP801 TP802 J801...

Страница 17: ...C IC401 LA7840 VIDEO SW IC IC701 NJM2245L 3 RESET IC IC103 PST600C 5V REG IC IC502 KIA7805API F502 T501 12 16 1 4 1 Q101 V BUFFER 10 HV F S FB401 FBT 1 4 CRT 3 9 7 R G B Heater F 8 4 3 5 6 3 1 5V REG...

Страница 18: ...D601 C774 C751 W018 C701 T401 C317 C520 C313_1 W166 C423 W132 W851 W036 W122 W871 D609 C203_1 C416 W051 C532 Q754 W089 W110 R206 R145 S803Y S803X HS401 Q401 B301 HS403 W186 S801Y IC502_1 C531 CP101_1...

Страница 19: ...06 Q701 R711 C710 W124 R710 W819 R758 W129 W130 C522 C627 R709 C201 R209 R208 Q201 R216 W850 R636 R134 C645 R143 R616 R638 W156 R651 R652 R708 R601 Q302 R327 R133 R650 R637 Q607 Q103 R613 R204 C202 R6...

Страница 20: ...R885 TE9A15A C876 R879 C881 C884 C880 C883 C879 C887 C864 C861 R851 R854 R853 R855 R857 R864 R865 W867 C886 W857 R867 W861 W859 W001 R871 C867 R881 R852 R880 Q852 R875 W868 W864 R870 C860 C858 W008 W8...

Страница 21: ...SKHVBED010 20 CH UP 14 DOWN SW107 SKHVBED010 20 CH DOWN X101_1 8MHz THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE...

Страница 22: ...50V KS C412 3 3 50V YK C632 1 50V KS C317 100 16V YK C620 470 6 3V YK D608 MTZJ8 2A D622 MTZJ5 6B D623 MTZJ5 6B D621 MTZJ5 6B W923 W926 W855 W871 W918 W921 W922 W893 W902 W810 W927 W896 W865 W928 W80...

Страница 23: ...10 0 022 B C712 10 50V KS W819 W877 THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL NOTE OF PRINTING AND...

Страница 24: ...6_1 820P 2KV YR C502 0 0022 250V KX C525 100P 250V KX C527 100P 250V KX C526 0 22 250V MMCA C514_1 330P 2KV YR C507 0 0022 2KV B C506 0 0022 2KV B C513 0 022 630V PP C512 0 015 M C522 0 01 B C529 470P...

Страница 25: ...W R407_2 2 7 1 4W R819 2 7K 1 4W R817 2 7K 1 4W R821 2 7K 1 4W C806_1 0 0022 2KV B C430_1 0 068 100V TF C435 0 047 100V TF C429 0 0022 B C401_1 0 001 2KV YR C437 0 39 250V ECWF C409 150P 500V B C444_1...

Страница 26: ...6V KS C760 100 6 3V YK D702 MTZJ12B D701 MTZJ12B D754_1 MTZJ12B W851 W920 W858 W885 W933 W932 W938 W935 W112 W838 W839 THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR B...

Страница 27: ...H THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL NOTE OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT TH...

Страница 28: ...E J702 LPR6520 7200C F_A V_IN MONO 1 2 3 4 OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME GND GND A_IN_L GND V_IN FRONT AV JACK PCB G 16 G 15 FR...

Страница 29: ...64 W868 W851 W870 W865 W858 W860 W853 W854 W857 W861 W859 W867 W863 X850 13875KHz THE DC VOLTAGE AT EACH PART WAS MEASURED WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST WAS RECEIVED IN GOOD CONDITI...

Страница 30: ...schematic diagram H 1 WAVEFORMS 1V 0 5ms div 9 4 200mV 20 s div 13 0 5V 20 s div 8 1V 20 s div 2 2V 500 s div 12 1V 20 s div 1V 20 s div 11 0 5V 20 s div 6 2V 500 s div 1 10 20V 20 s div 5 200mV 5ms d...

Страница 31: ...umber in the schematic diagram H 2 17 0 5V 5ms div 19 20V 5ms div 20 50V 20 s div WAVEFORMS 21 10V 20 s div 22 200V 20 s div 23 10V 5ms div 24 20V 5ms div 25 50KV 20 s div 26 50KV 20 s div 27 50KV 20...

Страница 32: ...2 102 201 201 108 109 107 110 116 119 206 206 206 206 119 206 117 206 206 206 119 201 201 SW501 123 FB401 204 207 205 PCB010 MAIN PCB 122 204 114 204 TU001 204 207 PCB150 T TEXT PCB 121 120 203 203 11...

Страница 33: ...722202A514 SHEET RATING 118 761WPA0149 PLATE JACK 119 800WQ00023 FELT SHEET 15x100xT0 5 120 761WPA0122 HOLDER FBT 121 8995034000 CORD CLIP UL CO 122 752WSAA008 SHIELD CASE 123 752WSAA006 PLATE SHIELD...

Страница 34: ...CC 330 PF 2KV BP IC751 I03S071510 IC LA7151 C515 C034BN7L2K CC 330 PF 2KV BN IC850 ICKD001060 IC ET106 or C516 C0JLYR7W2K CC 820 PF 2KV YR or ICKD002060 IC ET206 C01BBP7W2K CC 820 PF 2KV BP IC851 ICKD...

Страница 35: ...ACITOR PCB010 A3G818C010 PCB ASS Y TM9430A CMP METAL POLYESTER CAPACITOR PCB110 A3G818C110 PCB ASS Y TC9290A CMPL METAL PLASTIC CAPACITOR PCB150 A3G818C150 PCB ASS Y TE9A15A CMPP METAL POLYPROPYLENE C...

Страница 36: ...SPEC NO O R NO M3G8 18C W153018...

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