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Samsung TW20P14X/BWT, Руководство по обслуживанию

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1. Some semiconductor (“solid state”) devices

are easily damaged by static electricity. Such
components are called Electrostatically
Sensitive Devices (ESDs); examples include
integrated circuits and some field-effect 
transistors. The following techniques will
reduce the occurrence of  component damage
caused by static electricity.

2. Immediately before handling any semicon

ductor components or assemblies, drain the
electrostatic charge from your body by 
touching a known earth ground. Alternatively,
wear a discharging wrist-strap device.  (Be
sure to remove it prior to applying power—
this is an electric shock precaution.)

3. After removing an ESD-equipped assembly,

place it on a conductive surface such as 
aluminum foil to prevent accumulation of
electrostatic charge.

4. Do not use freon-propelled chemicals.  These

can generate electrical charges that damage
ESDs.

5. Use only a grounded-tip soldering iron when

soldering or unsoldering ESDs.

6. Use only an anti-static solder removal device.

Many solder removal devices are not rated as
“anti-static”;  these can accumulate sufficient
electrical charge to damage ESDs.

7. Do not remove a replacement ESD  from its

protective package until you are ready to
install it.  Most replacement ESDs are 
packaged with leads that are electrically 
shorted together by conductive foam, 
aluminum foil or other conductive materials.

8. Immediately before removing the protective

material from the leads of a replacement ESD,
touch the protective material to the chassis or
circuit assembly into which the device will be
installed.

9. Minimize body motions when handling

unpackaged replacement ESDs.  Motions such
as brushing clothes together, or lifting a foot
from a carpeted floor can generate enough 
static electricity  to damage an ESD.

Precautions

1-4

Samsung Electronics

1-3  Precautions for Electrostatically Sensitive Devices  (ESDs)

Содержание TW20P14X/BWT

Страница 1: ...14X BWT Television Video Cassette Recorder CONTENTS Precautions Specifications Disassembly and Reassembly Alignment and Adjustment Troubleshooting Exploded View and Parts List Electrical Parts List Block Diagram Wiring Diagram Schematic Diagrams 1 2 3 4 5 6 7 8 9 10 ...

Страница 2: ...ELECTRONICS Samsung Electronics Co Ltd Feb 2003 Printed in Korea AA82 00423A ...

Страница 3: ...ts metal cabinets screwheads and control shafts The current measured should not exceed 0 5 milliamp Reverse the power plug prongs in the AC outlet and repeat the test Fig 1 1 AC Leakage Test 6 Antenna Cold Check With the unit s AC plug disconnected from the AC source connect an electrical jumper across the two AC prongs Connect one lead of the ohmmeter to an AC prong Connect the other lead to the ...

Страница 4: ...t appear to have overheated or that are otherwise damaged should be replaced with parts that meet the original specifications Always determine the cause of damage or overheat ing and correct any potential hazards 15 Observe the original lead dress especially near the following areas Antenna wiring sharp edges and especially the AC and high voltage power supplies Always inspect for pinched out of p...

Страница 5: ...ssible conductive parts examples metal panels input terminals and earphone jacks 6 Insulation Checking Procedure Disconnect the power cord from the AC source and turn the power switch ON Connect an insulation resistance meter 430V to the blades of the AC plug The insulation resistance between each blade of the AC plug and accessible conductive parts see above should be greater than 1 megohm 7 Neve...

Страница 6: ...trical charges that damage ESDs 5 Use only a grounded tip soldering iron when soldering or unsoldering ESDs 6 Use only an anti static solder removal device Many solder removal devices are not rated as anti static these can accumulate sufficient electrical charge to damage ESDs 7 Do not remove a replacement ESD from its protective package until you are ready to install it Most replacement ESDs are ...

Страница 7: ...M A2 STEREO Luminance FM azimuth recording Colour Down converted subcarrier phase shifted direct recording FF REW time Less than 100 seconds in FF with E 120 Wow and flutter WTD 0 4 maximum SP Frequency response 100 Hz 8 KHz GENERAL Power supply 220 240V 50Hz 110 260V 50 60Hz option 160 300V 50 60Hz Russia Consumption 14 15 50W 20 21 60W Audio output power 14 15 2W 20 2W 21 1 0Watts x 2 Number of ...

Страница 8: ...MEMO 2 2 Samsung Electronics ...

Страница 9: ...ence White Balance Sub Brightness Vertical Center Vertical Size Horizontal Size 4 2 1 Procedure for the Adjustment Mode 1 This mode uses the standard remote control The Service Mode is activated by 1 pressing the FACTORY service key on the local key board or 2 by entering the following remote control sequence within 2 seconds STAND BY DISPLAY MENU MUTE POWER ON 2 The SERVICE FACTORY message will b...

Страница 10: ...TA 28 5 1 6 10 6 9 38 32 32 0 11 30 38 27 40 38 22 4 1 12 26 31 27 15 2 2 5 NOTE PVS PVA PHS NVS NVA NHS parameters must be aligned using both the 50 Hz and 60 Hz vertical field rates 4 2 3 AGING Mode Reference Only This pattern is used for pre heating the CRT during manufacturing it is accessed in the factory by twice pressing the FACTORY key Even if the TV power is cut off the Aging Mode is not ...

Страница 11: ...TS OPTION VPS PDC TTX 0 EUROPE URSSIA CF CI CW CX CB CII 1 2 ON OFF 2HD 2HDLP 4HD HIFI SHOWVIEW VIDEO PLUS NONE ON OFF PDC VPS NONE ON OFF 4 3 Reset BYTE 1 2 3 4 5 6 7 8 9 ITEM Contrast Bright Sharpness Color Tint Volume Program Number Color System Sound System 3DB LNA Panel Lock Language Clock Timer On Time Sleep PICTURE MODE 0 4 2 4 Option ...

Страница 12: ...transformer 4 4 2 Automatic Degaussing A degaussing coil is mounted around the picture tube so that external degaussing after moving the TV should be unnecessary But the receiver must be properly degaussed upon installation The degaussing coil operates for about 1 second after the power is switched ON If the set has been moved or turned in a different direction disconnect its AC power for at least...

Страница 13: ... for at least 20 minutes 2 Plug in the CRT deflection yoke and tighten the clamp screw 3 Plug the convergence yoke into the CRT and set in as shown in Fig 4 1 4 Input a black and white signal 5 Fully demagnetize the receive by applying an external degaussing coil 6 Turn the CONTRAST and BRIGHTNESS controls to maximum 7 Loosen the clamp screw holding the yoke Slide the yoke backward or forward to p...

Страница 14: ...s 3 Check the data in the Service Mode 4 Adjust RG BG in the Factory Mode 4 4 7 B LOW LIGHT ADJUSTMENT 1 Automatically accomplished during the high light adjustment 4 Pole Magnet 6 Pole Magnet 2 Pole Magnet Clamper Screw 2 POLE PURITY YOKE CLAMP SCREW 6 POLE CONVERGENCE 4 POLE CONVERGENCE ADJUST VERTICA 31m m Vertical Green Belt Fig 4 1 Convergence Magnet Assembly Fig 4 2 Center Convergence Adjust...

Страница 15: ... and blue horizontal line in the center of the screen 6 Adjust the two tab pairs of the 6 pole magnets to superimpose the red and blue line onto the green Changing the angle affects the vertical lines and rotating both magnets affects the horizontal lines 7 Repeat adjustments 2 6 if necessary 8 Since the 4 pole magnets and 6 pole magnets interact the dot movement is complex Fig 4 3 RED BLUE BLUE R...

Страница 16: ...ision or Monitor 2 Oscilloscope Wide band dual trace trig gered delayed sweep 3 DC Voltmeter 4 TV CH Generator 5 Attenuator 6 Recording tape Blank tape 7 Pattern Generator PAL color bar 100 White Fig 4 4 Alignment Tape 0 3V Burst Signal as fiat as possible White 100 signal White 75 signal 0 3V 0 7V Horizontal sync signal Fig 4 5 Color bar signal of pattern generator Yellow Cyan Green Magenta Red B...

Страница 17: ...top Play position 5 Min over MAIN Break ON MODE High speed Rew Low speed FF High speed FF Low speed Rew STANBY POWER OFF LOADING START LOADING END REV PLAY STOP1 STOP 2 FF REW 1 FF REW 2 I II III IV V VI VII a b c d e f F R2 F R1 SPT2 SPT1 PLAY REV LOAD END LOAD START POWER OFF STANDBY E SEN S SEN SW C SW B SW A SW POSITION FL SW ON less than 3 5v OFF more than 3 5v Input to A D port START END SEN...

Страница 18: ...4 10 Samsung Electronics MEMO ...

Страница 19: ...4S FD801S No Is IC801S Pin 3 19 22V Check IC801S Zener diode Check Replace T801S No Yes No Yes Check Voltage of A5V A3 3V A15V power line Check whether each power line is short or open No No Yes Is IC201S Pin 54 Voltage 3 3V Check H V SYNC on IC201S Pins 33 21 22 Check Replace IC901 Check IC201S Pin 11 is High when power is On Check Replace IC902 Check the voltage of TU001 Yes Yes No No Yes ...

Страница 20: ... Electronics 5 2 No RF Picture Sound Check IC201S 40 24 Check IC201S R G B pins 51 52 53 Yes No Check Another I2C bus line Check Q401 Q402 Replace Replace IC201S No Check After bus line open No Replace No Yes No Check FBT Yes Yes ...

Страница 21: ...ent level 2 Check AV Video Sound Playback 3 See Audio Block Diagram 5 5 RF Weak Signal Playback AV Mode OK 1 Check Tuner TU01S B Check 9V 33V 5V CN802A 5 6 Recording Defect 1 CN802A Check Retouch 2 2nd Tuner TU02S B Check 33V LT02 5V JTV501 3 2nd If Check 5V ICT01 Video out Audio out 4 Video Defect IC701 Check 5 Audio Defect IC701 Check 6 Standby Recording Defect ICM601 42 Line 7 VPS PDC Recording...

Страница 22: ...ck the Color Adjustment level 2 Check the Sandcastle Pulse Line IC201S 34 3 Check the R Y B Y Line IC201S 51 53 5 8 No Vertical SCAN 1 Check L301 L302 C310 2 Check IC301 2 3 Check IC201S 21 22 4 Check DY Connector 5 9 Horizontal Size 1 Check LR401S L402 CR402S ...

Страница 23: ...Regulator Inoperative No No See Mechanism Does Not Operate in Play Mode See Video Missing in Play Mode Yes Does Not Operate or Operates but Stops Soon RF VIDEO Play Indication in Display Mechanism Operation See PB Audio Audio Missing in Play Mode Insert a Cassette Tape Recorded by Another VCR and Press Play Button PB Video ...

Страница 24: ...CM601 77 76 Low Check Tape Load ICM601 38 HIGH ICM601 39 LOW No Moter B ICM602 3 9 21 No Motor B Line Replace ICM601 Replace ICM602 Cylinder Rotation No See Cylinder Does Not Rotate High Yes Yes Prog SW State ICM601 63 64 65 No Deck Loading Motor Mechanism S T Reel ICM601 99 98 DC PTM601 PTM602 Supply Take Up Reel Sensor PTM601 PTM602 Yes Mechanism Does Not Operate In Play Mode Place VCR Power On ...

Страница 25: ...ee Audio Mising in Record Mode D REC H ICM601 66 Low Check ICM601 Rec SW Logic ICM601 No Change Tape Replace Replace SWM611 REC Video No See Video Missing in Record Mode High Yes Load VCR With a Blank Tape and Press Record Button Yes Yes Play Operation No See Play Mode Inoperative Yes ...

Страница 26: ...3 Fast Forward Mode Inoperative Check Mechanism Mechanism State ICM601 63 64 65 STOP See Mechanism Does Not Operate In Play Mode Capstan Motor Rotation STOP See Capstan Does Not Rotate F FWD Rotate Load VCR With a Tape and Press F Fwd Button Yes ...

Страница 27: ...ode Inoperative Check Mechanism Mechanism State ICM601 63 64 65 STOP See Mechanism Does Not Operate In Play Mode Capstan Motor Rotation STOP See ICM601 25 Rew Rotate Press Rewind Button Yes Load VCR With a Tape No See Fast Forward Mode Inoperative Rotate ...

Страница 28: ...de Inoperative Replace ICM601 Capstan Speed Replace ICM601 Noise Bar Locking Serach Speed Yes Press REV Search Button Yes Play Operation No See Play Mode Inoperative Yes No Rec SW Logic ICM601 No Change Tape Replace Check Mechanism Play Speed Capstan Motor Yes ...

Страница 29: ...hanism Does Not Operate Press Eject Button Tape Loading Yes Turn the VCR Power On and Insert a Tape No Check LM B Line No No Check Start End Sensor ICM601 Yes ICM601 39 Check Control Pulse ICM601 76 77 No Replace ICM602 Yes ICM602 12 LOW ICM602 11 HIGH Check ICM601 No ...

Страница 30: ...oting 5 12 Samsung Electronics 5 17 No Servo Lock Play No Check A C Head No Check Start End Sensor ICM601 Yes CTL Pluse ICM601 4 C FG ICM601 93 Yes Replace ICM601 Yes Check CTL Pulse AC Level SP LP Over 2Vp p No ...

Страница 31: ...o Check A5V at AL6V Line of Power Supply No Check 12V at AL15V Line of Power Supply Yes AL 5V CNM603 8 9V CNM603 5 Place the VCR In Play Mode Yes No Check C M CTL RM606 RM604 No Check I LIMIT RM618 Yes 2 5V CNM603 4 CNM603 3 2 5V Check Capstan Motor Yes No Check ICM601 Yes ...

Страница 32: ...tronics 5 19 Drum Does Not Rotate No Check 12V Check 12V ICM602 9 21 Place the VCR In Play Mode Yes No Replace XTM601 CM609 CM610 Faster Check D FG D PG ICM601 96 97Square Wave Slower 8 MHz XTM601 CYL Speed Check Cylinder Motor Yes Yes ...

Страница 33: ...ng In Play Mode Replace ICM301 Check ICM301 18 Yes Place VCR Play Mode No Check QM302 No Yes Video ICM301 20 Video FM In ICM301 17 No Check Video Out Line Yes Video ICM301 29 Video EE Mode Operation No See Video Missing In EE Mode Yes Yes Check Video Head No ...

Страница 34: ...ng Electronics 5 21 Video Missing In Record Mode No Replace ICM301 Check Video Head Place VCR Record Mode Yes FM Video ICM301 18 FM Video ICM301 21 Yes Video EE Mode Operation No TV Switching Circuit Check Yes Yes No Check RM313 ...

Страница 35: ...Electronics 5 17 5 22 Color Missing In Play Mode FM ENV ICM301 61 Yes Color ICM301 71 S W 25Hz ICM301 11 No Check ICM601 No No See Video Missing In Play Mode Replace ICM301 Yes Check XTM301 4 43MHz Yes No Change XTM301 Yes No ...

Страница 36: ...ectronics 5 23 Color Missing In Record Mode VIdeo In Record Mode Yes Color ICM301 61 Check XTM301 4 43MHz No Replace XTM301 No No TV Switching Circuit Check Replace ICM301 Yes Yes Yes FM Signal ICM301 71 Replace ICM301 No Check CM351 ...

Страница 37: ... pin75 5V Check ICM301 pin23 24 IC CLK DATA No Check ICM301 pin 1 PB Audio Signal Small Signal Check PC 5V Line Yes Yes Yes Yes Yes No Check VCR MICOM ICM601 pin27 28 No Check A C Head and PB EQ Block AUDIO HEAD AZIMUTH No Check CM301 Check ICM301 pin100 PB audio signal Small Signal No Replace ICM301 Check ICM301 pin96 PB Audio Signal ...

Страница 38: ...5 5V Yes Yes Yes No Check PC 5V Line No No Replace ICM301 Check ICM301 pin7 REC audio signal Check IC702 14 MONO out No Check IC702 Yes Place VCR in REC Mode Replace CNM302 Yes Check CNM302 Pin5 No Check A C Head Assembly Yes Check FLM501 Pin5 REC bias signal Check CM370 RM357 RM358 CM371 CM373 CM372 QM312 RM359 ...

Страница 39: ...03 000508 DIODE ZENER MTZJ5 6B 5 6V 5 45 5 73V 500 5 DZ206 0403 000720 DIODE ZENER MTZJ9 1B 9 1V 8 57 9 01V 500 5 DZ701 0403 000720 DIODE ZENER MTZJ9 1B 9 1V 8 57 9 01V 500 5 ZDM602 0403 000720 DIODE ZENER MTZJ9 1B 9 1V 8 57 9 01V 500 5 DZ201 0403 000720 DIODE ZENER MTZJ9 1B 9 1V 8 57 9 01V 500 5 DZ203 0403 000720 DIODE ZENER MTZJ9 1B 9 1V 8 57 9 01V 500 5 DZ204 0403 000720 DIODE ZENER MTZJ9 1B 9 ...

Страница 40: ...M 5 1 8W AA TP 1 8X3 2MM 5 RM317 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 5 RM312 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 5 RM310 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 5 R903 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 5 RM609 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 5 RM643 2001 000429 R CARBON 1KOHM 5 1 8W AA TP 1 8X3 2MM 5 RM629 2001 000429 R CARBON...

Страница 41: ...MLC AXIAL 2 2NF 20 16V Y5R TP 5 CM610 2202 000205 C CERAMIC MLC AXIAL 22pF 5 50V SL TP 1 5 CM609 2202 000205 C CERAMIC MLC AXIAL 22pF 5 50V SL TP 1 5 CM314 2202 000216 C CERAMIC MLC AXIAL 0 027NF 5 50V SL TP 5 C716 2202 000231 C CERAMIC MLC AXIAL 0 33NF 10 50V Y5P T 5 C715 2202 000231 C CERAMIC MLC AXIAL 0 33NF 10 50V Y5P T 5 C703 2202 000231 C CERAMIC MLC AXIAL 0 33NF 10 50V Y5P T 5 C731 2202 000...

Страница 42: ...0 2 5x3 4mm 5 LM305 2701 000114 INDUCTOR AXIAL 10uH 10 2 5x3 4mm 5 LM304 2701 000114 INDUCTOR AXIAL 10uH 10 2 5x3 4mm 5 LM309 2701 000114 INDUCTOR AXIAL 10uH 10 2 5x3 4mm 5 LM601 2701 000114 INDUCTOR AXIAL 10uH 10 2 5x3 4mm 5 LM604 2701 000114 INDUCTOR AXIAL 10uH 10 2 5x3 4mm 5 LM605 2701 000114 INDUCTOR AXIAL 10uH 10 2 5x3 4mm 5 LJ702 2701 000114 INDUCTOR AXIAL 10uH 10 2 5x3 4mm 5 L201 2701 00011...

Страница 43: ...TAPING 5 J171 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 5 J172 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 5 J173 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 5 J168 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 5 J160 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 5 J161 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 5 J162 3812 000219 WIRE NO SHEATH CU TC...

Страница 44: ... RECTIFIER 1N4004 400V 1A DO 41 TP 4 D814 0402 000493 DIODE RECTIFIER 1R5GU41 400V 1 5A DO 15L 4 D404 0402 000534 DIODE RECTIFIER RG10V 400V 1 2A DO 201 T 4 D808 0402 001105 DIODE RECTIFIER ERB43 04SV1 400V 1 0A 4 D403 0402 001105 DIODE RECTIFIER ERB43 04SV1 400V 1 0A 4 D402 0402 001105 DIODE RECTIFIER ERB43 04SV1 400V 1 0A 4 D804S 0402 001111 DIODE RECTIFIER 1N5397GP 600V 1 5A DO 20 4 D803S 0402 ...

Страница 45: ...CWA 300V 52mm TAPING 4 J813 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 4 J824 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 4 J822 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 4 J821 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 4 J820 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 4 J819 3812 000219 WIRE NO SHEATH CU TCWA 300V 52mm TAPING 4 J812 3812 000219 WIRE N...

Страница 46: ...HA83 00006A LP RESIN HIPS BASF495F NTR HB 3 HA83 00012A LP RESIN M BATCH WILSON 6053 GY 60 GRY 2 AA61 00050A SPRING ETC DOOR TVCR TVI SUS304 2 AA90 00947A ASSY FULL DECK 2HD SVTS M2P XEC 3 AA91 00741A ASSY DECK SCORPIO TOSHIBA 3 AA91 00744A ASSY DRUM 2HD NON DLC SCORPIO 3 AA91 00782A ASSY S IMP ROLLER PAL 2HD SESA TF14N53 3 6006 001092 SCREW ASS Y MACH WS PH M3 0 L6 0 ZPC Y 2 AA90 02598A ASSY COVE...

Страница 47: ...AA68 01120A MANUAL SERVICE CIS A4 6PAGE FOLD W 2 6801 001073 CARD REGISTRATION RUS XEV RUS MOJO100 ASSY CPT 1 AA91 05783A ASSY CPTC17A 20 SEB SDIHU A48ECR43X52 2 LC801S AA27 20003Y COIL DEGAUSSING 20 15 2ohm 28T L2170 E 2 AA03 00280A CRT COLORA48ECR43X 380MG 1 85MH 28 7MH 2 AA98 70031A ASSY TBC WIRE P DP 20 AA98 70014B 1P TV Electrical Parts List Samsung Electronics 7 9 Loc No Code No Description ...

Страница 48: ...Electrical Parts List 7 10 Samsung Electronics MEMO ...

Страница 49: ...n 13 VCR tuner high is high The decoded signal goes to IC701 pin 2 where it is fed to IC 701 pin 9 high output of VCR micom s pin 11 AV Tuner and out to VCR pin 4 for recording 8 1 3 VIEWING A SCRAMBLED CHANNEL WHILE RECORDING AN UNSCRAMBLED CHANNEL The output CVBS of the 2nd IF is fed from IC701 pin 5 to IC701 pin 4 low output of VCR micom pin 11 AV tuner Then it goes to the VCR PART pin 4 for re...

Страница 50: ...Block Diagrams 8 2 Samsung Electronics 8 2 C17A PCB Layout ...

Страница 51: ...9 Wiring Diagram 9 1 C17A Wiring Diagram Wiring Diagram Samsung Electronics 9 1 ...

Страница 52: ...TP01 TP05 TP06 TP02 TP04 TP03 Schematic Diagrams 10 1 Samsung Electronics 10 Schematic Diagrams 10 1 MAIN1 VCR SYSTEM BLOCK TP01 TP02 TP03 TP04 TP05 TP06 ...

Страница 53: ...Schematic Diagrams 10 2 Samsung Electronics 10 2 MAIN2 VOC TUNER BOX ...

Страница 54: ...TP07 TP08 TP09 TP10 TP11 Schematic Diagrams 10 3 Samsung Electronics 10 3 MAIN3 VCR A V BLOCK TP01 TP02 TP03 TP04 TP05 ...

Страница 55: ...Schematic Diagrams 10 4 Samsung Electronics 10 4 MAIN4 SWITCHING BLOCK ...

Страница 56: ...Schematic Diagrams 10 5 Samsung Electronics 10 5 MAIN5 OPTION PAL HIFI BLOCK ...

Страница 57: ...Schematic Diagrams 10 6 Samsung Electronics 10 6 MAIN6 OPTION VCR SECAM BLOCK ...

Страница 58: ...Schematic Diagrams 10 7 Samsung Electronics 10 7 POWER FBT ...

Страница 59: ...Schematic Diagrams 10 8 Samsung Electronics 10 8 CRT ...

Страница 60: ...Schematic Diagrams 10 9 Samsung Electronics 10 9 FRONT A V MASTER SW FRONT A V MASTER SW ...

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