Combination flat color television and video cassette recorder / dvd video player (77 pages)
Summary of Contents for Toshiba MW20F51
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FILE NO. 140-200514 (MFR’S VERSION A) SERVICE MANUAL COLOR TELEVISION/ VIDEO CASSETTE RECORDER/ DVD VIDEO PLAYER MW20F51 DOCUMENT CREATED IN JAPAN, May, 2005...
CAUTION THIS DIGITAL VIDEO PLAYER EMPLOYS A LASER SYSTEM. TO ENSURE PROPER USE OF THIS PRODUCT, PLEASE READ THIS SERVICE MANUAL CARE- FULLY AND RETAIN FOR FUTURE REFERENCE. SHOULD THE UNIT REQUIRE MAINTENANCE, CONTACT AN AUTHORIZED SERVICE LOCATION-SEE SERVICE PROCEDURE. USE OF CONTROLS, ADJUSTMENTS OR THE PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY As for the places which need special attentions, Safety is secured against an X-ray by consider- they are indicated with the labels or seals on the ing about the cathode-ray tube and the high cabinet, chassis and parts.
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IMPORTANT SAFEGUARDS READ INSTRUCTIONS All the safety and operating instructions should be read before the unit is operated. RETAIN INSTRUCTIONS The safety and operating instructions should be retained for future reference. HEED WARNINGS All warnings on the unit and in the operating instructions should be adhered to. FOLLOW INSTRUCTIONS All operating and use instructions should be followed.
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IMPORTANT SAFEGUARDS (CONTINUED) OUTDOOR ANTENNA GROUNDING If an outside antenna or cable system is connected to the unit, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. Section 810 of the National Electrical Code, ANSI/NFPA 70, provides information with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.
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IMPORTANT SAFEGUARDS (CONTINUED) EXAMPLE OF ANTENNA GROUNDING AS PER THE NATIONAL ELECTRICAL CODE ANTENNA LEAD IN WIRE GROUND CLAMP ANTENNA DISCHARGE UNIT (NEC SECTION 810-20) ELECTRIC SERVICE EQUIPMENT GROUNDING CONDUCTORS (NEC SECTION 810-21) GROUND CLAMPS POWER SERVICE GROUNDING NEC-NATIONAL ELECTRICAL CODE ELECTRODE SYSTEM (NEC ART 250, PART H) S2898A...
WHEN REPLACING DVD DECK [ When removing the DVD Deck ] Before removing Pick Up PCB and DVD PCB connector, short circuit the position shown in Fig. 1 using a soldering iron. If you remove the DVD Deck with no soldering, the Laser may be damaged. [ When installing the DVD Deck ] Remove all the soldering on the short circuit position after the connection of Pick Up PCB and DVD PCB connector.
TAPE REMOVAL METHOD AT NO POWER SUPPLY Remove the TV/DVD/VCR block from the main unit as shown in Fig. 1 below can be seen. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.) Remove the screw 1 of the Deck Chassis and remove the Loading Motor. Rotate the Pinch Roller Cam in the direction of the arrow by hand to slacken the Video Tape.
PARENTAL CONTROL - RATING LEVEL 4 DIGIT PASSWORD CANCELLATION If the stored 4 digit password in the Rating Level menu needs to be cancelled, please follow the steps below. Turn Unit ON. Set the DVD to the Stop Mode. Check that 'No disc' is displayed on the screen. Press and hold the 'STOP(DVD)' button on the front panel.
ABOUT LEAD FREE SOLDER (PbF) Distinction of PbF PCB: PCBs (manufactured) using lead free solder will have a PbF printing on the PCB. (Please refer to figures.) Caution: • Pb free solder has a higher melting point than standard solder; Typically the melting point is 50°F~70°F(30°C~40°C) higher.
TABLE OF CONTENTS A1-1 CAUTION ..............................A1-2 SERVICING NOTICES ON CHECKING ...................... A1-2 HOW TO ORDER PARTS ..........................A1-3~A1-5 IMPORTANT SAFEGUARDS ........................A1-6 WHEN REPLACING DVD DECK ......................... A1-7 TAPE REMOVAL METHOD AT NO POWER SUPPLY ................A1-7 DISC REMOVAL METHOD AT NO POWER SUPPLY ................A1-8 PARENTAL CONTROL RATING LEVEL ....................
GENERAL SPECIFICATIONS CRT Size / Visual Size 20 inch / 508.0mmV System CRT Type Flat Magnetic Field BV/BH +0.45G / 0.18G Color System NTSC Speaker 2 Speaker Position Front Size 1.8 x 3.9 Inch Impedance 8 ohm Sound Output 1.5W + 1.5W 10%(Typical) System VHS Player / Recorder...
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GENERAL SPECIFICATIONS Signal Video Signal Input Level 1 V p-p/75 ohm Output Level 1 V p-p/75 ohm S/N Ratio (Weighted) at DVD Mode 65dB S/N Ratio (Weighted) at VCR Mode 50dB Horizontal Resolution at DVD Mode 400 Lines Horizontal Resolution at VCR(SP)Mode 220 Lines RGB Signal Output Level...
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GENERAL SPECIFICATIONS G-10 On Screen Menu Display Menu Type Icon (TV/VCR) System Setup Clock Set On/Off Timer Set Auto Clock On/Off Standard Time Daylight Saving Time TV Setup Language Picture Audio Picture Preference Channel Setup TV/CABLE Auto CH Memory Add/ Delete V-chip Setup Tape Setup Timer Rec Set...
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GENERAL SPECIFICATIONS G-11 On Screen Menu (DVD) Display Menu Type Icon (DVD) Language Menu Subtitle Audio OSD Language(Set up Language) Video E.B.L. (Enhanced Black Level) TV Screen Size(4:3) OSD Display On/Off Picture Mode (Video/Film/Auto) JPEG Interval Audio DRC (Dynamic Range Control) Dialogue (On DRC[TV] / Off DRC[Std]) Surround System...
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No Operation Timer Back-up (at Power Off Mode) G-14 Remote Unit RC-KH Control Glow in Dark Remocon Unit Remocon Format TOSHIBA Format TOSHIBA Custom Code 40-BFh, 44-BBh, 45-Bah Power Source Voltage(D.C) UM size x pcs UM-4 x 2 pcs Total Keys...
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GENERAL SPECIFICATIONS G-15 Features Auto Head Cleaning (TV/VCR) VIDEO PLUS+(SHOWVIEW,G-CODE) Auto Clock Picture Preference Auto Setup Forward / Reverse Picture Search Auto CH Memory Surround Stable Sound Closed Caption TV Auto Shut off Function End Call Index Search SQPB CABLE CM Skip(30sec x 6 Times) Comb Filter (2Lines) VM Circuit...
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GENERAL SPECIFICATIONS G-16 Accessories Owner's Manual Language English w/Guarantee Card Remote Control Unit Battery UM size x pcs UM-4 x 2 pcs OEM Brand Rod Antenna Poles Terminal Loop Antenna Terminal U/V Mixer 300 ohm to 75 ohm Antenna Adapter Antenna Change Plug DC Car Cord (Center+) AC Plug Adapter...
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1 Corner / 2 Edges / 4 Surfaces Height (cm) 60(ORION SPEC:31) Container Stuffing(40' container) Sets G-21 Material Cabinet Front 94V0 DECABROM Rear 94V0 DECABROM Jack Panel Non-Halogen Demand Eyelet Demand G-22 Environment Environmental standard requirement (by buyer) Green procurement of TOSHIBA Pb-free Phase3(Phase3A) A3-8...
DISASSEMBLY INSTRUCTIONS 1-3: TV/DVD/VCR BLOCK (Refer to Fig. 1-3) 1. REMOVAL OF MECHANICAL PARTS Remove the 2 screws 1. AND P.C. BOARDS Disconnect the following connectors: 1-1: BACK CABINET (Refer to Fig. 1-1) (CP303, CP404, CP1704 and CP9604). Remove the 6 screws 1. Remove the TV/DVD/VCR Block in the direction of arrow.
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DISASSEMBLY INSTRUCTIONS 1-5: VCR DECK (Refer to Fig. 1-5) 1-6: VCR PCB (Refer to Fig. 1-6) Remove the 6 screws 1. NOTE Remove the screw 2. Do not remove the cable at the FE Head section. The FE Remove the AV Jack Shield. Head may be damaged if you remove the cable by force.
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DISASSEMBLY INSTRUCTIONS 1-8: DVD PCB/DVD DECK (Refer to Fig. 1-8) 1-9: DEFLECTION PCB (Refer to Fig. 1-9) Remove the 2 screws 1. Short circuit the position shown in Fig. 1-8 using a Remove the 3 screws 2. soldering iron. If you remove the DVD Deck with no Remove the Deflection PCB in the direction of arrow.
DISASSEMBLY INSTRUCTIONS 2-3: LINK UNIT (Refer to Fig. 2-3) 2. REMOVAL OF VCR DECK PARTS Set the Link Unit to the Eject position. 2-1: TOP BRACKET (Refer to Fig. 2-1) Unlock the support 1. Extend the 2 supports 1. Remove the (A) side of the Link Unit first, then remove Slide the 2 supports 2 and remove the Top Bracket.
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DISASSEMBLY INSTRUCTIONS 2-5: LOADING MOTOR/WORM (Refer to Fig. 2-5-A) 2-6: TENSION ASS’Y (Refer to Fig. 2-6-B) Remove the screw 1. Turn the Pinch Roller Cam clockwise so that the Tension Remove the Loading Motor. Holder hook is set to the position of Fig. 2-6-A to move Remove the Worm.
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DISASSEMBLY INSTRUCTIONS NOTE [OK] Tension Connect Take care not to damage the gears of the S Reel and T Reel. Tension Band The Polyslider Washer may be remained on the back of the reel. [NG] Tension Connect Tension Band Take care not to damage the shaft. Do not touch the section “A”...
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DISASSEMBLY INSTRUCTIONS 2-9: CASSETTE OPENER/PINCH ROLLER BLOCK/P5 ARM ASS’Y (Refer to Fig. 2-9-A) Unlock the support 1 and remove the Cassette Opener. Remove the Pinch Roller Block and P5 Arm Ass’y. Cassette Opener Spring Position Fig. 2-10-B Pinch Roller Block 2-11: FE HEAD (RECORDER ONLY) (Refer to Fig.
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DISASSEMBLY INSTRUCTIONS 2-13: CAPSTAN DD UNIT (Refer to Fig. 2-13) NOTE 1. In case of the Pinch Roller Cam and Main Cam installa- Remove the Capstan Belt. Remove the screw 1. tion, install them as the circled section of Fig. 2-14-B so that the each markers are met.
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DISASSEMBLY INSTRUCTIONS NOTE 2-17: CASSETTE GUIDE POST/INCLINED BASE S/T UNIT/P4 CAP/LED REFLECTOR 1. When you install the Loading Arm S Unit, Loading Arm T (Refer to Fig. 2-17-A) Unit and Main Loading Gear, align each marker. (Refer to Fig. 2-15-B) Remove the P4 Cap.
DISASSEMBLY INSTRUCTIONS 3. REMOVAL OF DVD DECK PARTS 3-2: MAIN CHASSIS ASS'Y (Refer to Fig. 3-2-A) Remove the screw 1. NOTE Unlock the 2 supports 2. 1. Disassemble only the DVD DECK PARTS parts listed Remove the Insulator (R) from the Main Frame Ass'y. here.
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DISASSEMBLY INSTRUCTIONS 3-3: LOADING MOTOR PCB ASS'Y/ LOADING BELT 3-4: RACK LOADING/MAIN GEAR/PULLEY GEAR (Refer to Fig. 3-3-A) (Refer to Fig. 3-4-A) Press down the catcher 1 and slide the Rack Loading. Remove the Loading Belt. Remove the screw 1. Unlock the support 2 and remove the Pulley Gear.
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DISASSEMBLY INSTRUCTIONS NOTE 3-7: SWITCH PCB ASS'Y/MIDDLE GEAR/FEED MOTOR (Refer to Fig. 3-7-A) 1. In case of the Clamper Ass'y installation, install correctly Remove the screw 1. as Fig. 3-5-B. Remove the Switch PCB Ass'y. Unlock the support 2. Remove the Middle Gear. Remove the 2 screws 3.
DISASSEMBLY INSTRUCTIONS 4. REMOVAL OF ANODE CAP 3. After one side is removed, pull in the opposite direction to remove the other. Read the following NOTED items before starting work. NOTE After turning the power off there might still be a potential Take care not to damage the Rubber Cap.
DISASSEMBLY INSTRUCTIONS 5. REMOVAL AND INSTALLATION OF FLAT 3. When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using PACKAGE IC a tweezers and remove the IC by moving with the IC REMOVAL desoldering machine.
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DISASSEMBLY INSTRUCTIONS INSTALLATION 4. When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thin- 1. Take care of the polarity of new IC and then install the tip Soldering Iron. (Refer to Fig. 5-8.) new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.
KEY TO ABBREVIATIONS Audio/Control H.P.F High Pass Filter Automatic Color Control H.SW Head Switch Audio Erase Hertz Automatic Frequency Control Integrated Circuit Automatic Fine Tuning Intermediate Frequency AFT DET Automatic Fine Tuning Detect Indicator Automatic Gain Control Inverter Amplifier Killer Antenna Left A.PB...
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KEY TO ABBREVIATIONS Serial Strobe Switch SYNC Synchronization SYNC SEP Sync Separator, Separation Transistor TRAC Tracking TRICK PB Trick Playback Test Point UNREG Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse, Voltage Display V.PB Video Playback Variable Resistor V.REC Video Recording Visual Search Fast Forward...
SERVICE MODE LIST This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit or on the main unit and on the remote control for more than the standard time (second).
PREVENTIVE CHECKS AND SERVICE INTERVALS The following standard table depends on environmental conditions and usage. Parts replacing time does not mean the life span for individual parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. The following list means standard hours, so the checking hours depends on the conditions.
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PREVENTIVE CHECKS AND SERVICE INTERVALS CLEANING NOTE 2. TAPE RUNNING SYSTEM After cleaning the heads with isopropyl alcohol, do not When cleaning the tape transport system, use run a tape until the heads dry completely. If the heads gauze moistened with isopropyl alcohol. are not completely dry and alcohol gets on the tape, 3.
WHEN REPLACING EEPROM (MEMORY) IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. NOTE: No need to set data for after position INI 44 due to the adjustment value. Table 1 Enter DATA SET mode by setting VOLUME to minimum.
MECHANICAL ADJUSTMENTS 1-2: CONFIRMATION AND ADJUSTMENT OF TENSION 1. CONFIRMATION AND ADJUSTMENT POST POSITION Read the following NOTES before starting work. Set to the PLAY mode. • Place an object which weighs between 450g~500g on the Adjust the adjusting section for the Tension Arm position Cassette Tape to keep it steady when you want to make so that the Tension Arm top is within the standard line of the tape run without the Cassette Holder.
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MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF VSR TORQUE NOTE Install the Torque Gauge (JG002F) and Adapter (JG002B) If the torque is out of the range, replace the following parts. on the S Reel. Set to the Picture Search (Rewind) mode. Check item Replacement Part (Refer to Fig.1-4-B) Then, confirm that it indicates 120~180gf•cm.
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MECHANICAL ADJUSTMENTS 2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/ 2-3: TAPE RUNNING ADJUSTMENT CONTROL HEAD (X VALUE ADJUSTMENT) When the Tape Running Mechanism does not work well, Confirm and adjust the height of the Reel Disk. adjust the following items. (Refer to item 1-1) Confirm and adjust the position of the Tension Post.
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MECHANICAL ADJUSTMENTS 3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE 1. Tension Connect P4 Post 2. Tension Arm T Brake Spring 3. Guide Roller T Reel 4. Audio/Control Head S Reel 5. X value adjustment driver hole Adjusting section for the Tension Arm position D2-4...
ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL FUNCTION FUNCTION OSD H BRI MAX ADJUSTMENTS OSD C BRI MIN CUT OFF CONT CENT Read and perform these adjustments when repairing the H.POSI CONT MAX circuits or replacing electrical parts or PCB assemblies. H.BLK L CONT MIN H.BLK R COL CENT...
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ELECTRICAL ADJUSTMENTS (TV SECTION) 2-7: VERTICAL POSITION 2-2: CONSTANT VOLTAGE Receive the monoscope pattern. Using the remote control, set the brightness and contrast Place the set in AV MODE without signal. to normal position. Using the remote control, set the brightness and contrast Activate the adjustment mode display of Fig.
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ELECTRICAL ADJUSTMENTS 00 OSD "A" Fig. 2-3 Fig. 2-4 2-11: BRIGHT CENTER Receive the monoscope pattern. (RF Input) 2-13: COLOR CENTER Using the remote control, set the brightness and contrast Receive the color bar pattern. (RF Input) to normal position. Using the remote control, set the brightness, contrast, Activate the adjustment mode display of Fig.
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ELECTRICAL ADJUSTMENTS 2-14: CONTRAST MAX Activate the adjustment mode display of Fig. 1-1 and press the channel button (21) on the remote control to select "CONT MAX". Press the LEFT/RIGHT button on the remote control until the contrast step No. becomes "60". Receive a broadcast and check if the picture is normal.
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ELECTRICAL ADJUSTMENTS 3-3: STATIC CONVERGENCE 3. PURITY AND CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 3-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator.
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Hi-Fi/DEMODULATOR BLOCK DIAGRAM Hi-Fi/AUDIO/HEAD AMP/DEM IC IC5501 AN3663FBP AUDIO_OUT_R AUDIO_OUT_L DVD IN/OUT DVD_A_OUT_R DVD_A_OUT_L INPUT SW FRONT_A_IN_R FRONT_A_IN_L IN/OUT REAR_A_IN_R REAR_A_IN_L HF_COM OUTPUT Y/C/AUDIO/ HEAD AMP VCO-FO LOGIC DIGITAL TUNER_AUDIO COMB FILTER FM LIM Y/C_AUDIO NORMAL_A NOISE BLOCK REDUCTION V. REC_ST-H HIFI_ENV HIFI_H.SW MICON...
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DIGITAL COMB FILTER BLOCK DIAGRAM P.CON+5V REGULATOR P.CON+12V COMB_FSC Q1502 P.CON+8V BUFFER Y/C_VIDEO_Y CHROMA/IF AT+30V DIGITAL COMB FILTER SW_C IC1501 TC90A45FG DVD_Y/C-C AV SW IC DVD IN/OUT DVD_VIDEO IC1502 MM1501XNRE Q1501 BUFFER Q1503 BUFFER AV SW IC IC1504 MM1501XNRE Y/C_VIDEO Y/C/AUDIO/ Y/C/AUDIO/ TUNER VIDEO...
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DVD IN/OUT BLOCK DIAGRAM AV SW1 DVD_RESET MICON CP8001 P.CON+9V_D P.CON+9V P.CON+D5V P.CON+5V_D REGULATOR DVD+3.8V DVD+3.8V DVD+3.8V P.CON+12V SPDIF-134 ZERO SPDIF-134 IN/OUT SW_AUDIO_OUT_R AUDIO SW IC IC8001 MM1501XNRE SW_AUDIO_OUT_L AUDIO_OUT_L Q8006, Q8007 AUDIO_OUT_R Hi-Fi/ ZERO MUTE DVD_A_OUT_L DEMODULATOR DVD_A_OUT_R AUDIO SW IC CP8002 MIXER IC IC8002 MM1501XNRE...
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REGULATOR BLOCK DIAGRAM Q3003 AT+5V OUT AT+5V Q3014 BACKUP+5V BACKUP+5V DVD_H MICON AT+12V VCR_POWER_H P.CON+5V_A P.CON+5V_D OUT IC P.CON+5V_A OUT IC P.CON+9V_D OUT IC P.CON+5V OUT IC P.CON+5V_C IC3001 IC3003 IC3002 IC3004 KIA278R05PI KIA278R09PI KIA278R05PI KIA278R05PI P.CON+5V IN/OUT AT+5V P.CON+8V Q3001 UNREG+8V BUFFER...
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TV BLOCK DIAGRAM MOTOR+12V Q1702 RELAY REGULATOR DRIVE UNREG+8V UNREG+5V DEGAUSS RELAY RY1701 DEGAUSS_H MICON L1703 DEGAUSS COIL D1705, D1706, D1710, D1711 Q406 AC IN TRANSFORMER CURRENT SWITCHING F1701 T1701 FEED BACK MOTOR+12V CHROMA/IF SWITCHING FEED BACK Q1705 IC1702 IC1701 KIA431A-AT SWITCHING PS2561AL1-1-V(W)
WAVEFORMS AUDIO/JACK MPEG/MICON Y/C/AUDIO/HEAD AMP 10ns 500µs 20µs 1.0V 1.0V 1.0V 200ns 500µs 2µs 1.0VV 1.0V 1.0V RF AMP/MOTOR DRV 100ns 10µs 1.0V 200mV 200mV 100µs 100ns 2.0V 200mV 200mV MEMORY 10µs 20µs 100mV 200mV NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
WAVEFORMS DEFLECTION MICON DEFLECTION 20µs 20ms 10ms 200V 2.0V MICON 50µs 10ms 2.0V 2.0V SOUND AMP/SURROUND 10ms 50µs 2.0V 200mV DEFLECTION DVD IN/OUT 10ms 50µs 0.2V 2.0V 5.0V Hi-Fi/DEMODULATOR CHROMA/IF 20µs 0.5V 2.0V 1.0V NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
WAVEFORMS DIGITAL COMB FILTER CRT/OPERATION 20µs 20µs 20µs 0.5V 1.0V 0.5ms 20µs 20µs 0.5V 1.0V CHROMA/IF 20µs 20µs 10ms 0.5V 1.0V 50µs 200ns 0.5V 200mV 20µs 50µs 1.0V 2.0V NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
CHASSIS EXPLODED VIEW (TOP VIEW) CD1501 M2003 UN4001 H5002 H5001 CD1502 M101 NOTE: Applying positions AA for the grease are displayed for this section. CLASS MARK Check if the correct grease is applied for each position. GREASE I2-1...
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CHASSIS EXPLODED VIEW (BOTTOM VIEW) M2001 CD1501 CD1502 NOTE: Applying positions AA for the grease are displayed for this section. CLASS MARK Check if the correct grease is applied for each position. GREASE I2-2...
DVD DECK EXPLODED VIEW Cannot supply separately. If the repair is needed, replace the LOADER SUB ASS'Y. M2603 PCB610 CD2301 (LOADING MOTOR PCB ASS'Y) CD2302 PCB640 CD2001 (SW PCB ASS'Y) Do not replace the parts. Because, minute adjustments are needed if this condition is disassembled further more.