Toshiba MD20FM1R Service Manual
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Toshiba MD20FM1R Service Manual

Toshiba MD20FM1R Service Manual

Color television/dvd video player
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FILE NO. 140-200231
SERVICE MANUAL
COLOR TELEVISION/
DVD VIDEO PLAYER
MD20FM1R

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Summary of Contents for Toshiba MD20FM1R

  • Page 1 FILE NO. 140-200231 SERVICE MANUAL COLOR TELEVISION/ DVD VIDEO PLAYER MD20FM1R...

  • Page 2: Caution

    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.

  • Page 3: How To Order Parts

    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.

  • Page 4: Important Safeguards

    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.
  • Page 5 IMPORTANT SAFEGUARDS (CONTINUED) DAMAGE REQUIRING SERVICE Unplug this unit from the wall outlet and refer servicing to qualified service personnel under the following conditions: When the power-supply cord or plug is damaged. If liquid has been spilled, or objects have fallen into the unit. If the unit has been exposed to rain or water.

  • Page 6: Disc Removal Method At No Power Supply

    DISC REMOVAL METHOD AT NO POWER SUPPLY Remove the Back Cabinet and TV/DVD Block. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.) Rotate the white gear of Deck CD section in the direction of the arrow by hand, remove the disc from Deck CD.

  • Page 7: Table Of Contents

    TABLE OF CONTENTS CAUTION ..........................A1-1 SERVICING NOTHCES CHECKING ..................A1-2 HOW TO ORDER PARTS ...................... A1-2 IMPORTANT SAFEGUARDS ....................A1-3, A1-4 DISC REMOVAL METHOD AT NO POWER SUPPLY ............A1-5 PARENTAL CONTROL-RATING LEVEL ................A1-5 TABLE OF CONTENTS ......................A2-1 GENERAL SPECIFICATIONS ....................

  • Page 8: General Specifications

    GENERAL SPECIFICATIONS CRT Size / Visual Size 20 inch / 508.0 mmV System CRT Type Flat Deflection 90 degree Magnetic Field BV/BH +0.45G / 0.18G Color System NTSC Speaker 2 Speaker Position Front Size 3 inch Impedance 8 ohm Sound Output 2.5W + 2.5W 10%(Typical) 2.0W + 2.0W...
  • Page 9 GENERAL SPECIFICATIONS On Screen Menu(TV) Display Menu Type Icon Picture Brightness Contrast Color Tint Sharpness Sound Bass Treble Balance TV/CATV Add/Delete Auto CH Memory Option V-Chip Language Clock Clock Set On/Off Timer Sleep Timer CH/AV/DVD Stereo/Audio Output Bilingual Caption / Text Auto Search/Position Game Volume...
  • Page 10 GENERAL SPECIFICATIONS G-10 On Screen Menu (DVD) Display Menu Type Character Language Menu Subtitle Audio Picture TV Screen Size OSD Display On/Off Sound DRC (Dynamic Range Control) dts Decode Output(5.1ch/ 2ch) Surround On/Off Center On/Off Sub Woofer On/Off Parental Password Lock/ Un Lock Rating Level Other OSD Language(Set up Language)
  • Page 11 GENERAL SPECIFICATIONS G-12 Remote Unit RC-EF Control Glow in Dark Remocon Format Custom Code 71-8E h Power Source Voltage(D.C) UM size x pcs UM-4 x 2 pcs Total Keys 45 Key Keys Power Play Stop Search+ Search- Skip+ Skip- Slow+ Slow- Pause Call...
  • Page 12 (Dolby Digital) (DTS) Surround (Spatializer N-2-2) Screen Saver G-14 Accessories Owner's Manual Language English w/Guarantee Card Buyer Model No MD20FM1R Remote Control Unit Battery UM size x pcs UM-4 x 2 pcs OEM Brand Rod Antenna Poles Terminal Loop Antenna Terminal...
  • Page 13 GENERAL SPECIFICATIONS G-15 Interface Switch Front Power (Tact) Channel Up Channel Down Volume Up Volume Down Play Open/Close Skip(>>) Skip(<<) Still/Pause Stop Main Power SW Rear Main Power SW Indicator Power Stand-by On Timer Terminals Front Video Input RCA x 1 Audio Input RCA x 2(Stereo) Other Terminal...

  • Page 14: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS 1-3: POWER PCB/DVD BLOCK (Refer to Fig. 1-3) Remove the 2 screws 1. AND P.C. BOARDS Disconnect the following connectors: 1-1: BACK CABINET (Refer to Fig. 1-1) (CP102, CP303, CP401 and CP3800). Remove the 7 screws 1. Remove the POWER PCB/DVD Block in the direction of Remove the screw 2 which are used for holding the arrow.
  • Page 15 DISASSEMBLY INSTRUCTIONS 1-5: AV PCB/DVD PCB/DECK CD (Refer to Fig. 1-5) Make the short circuit on the position as shown Fig. 1-5 using a soldering. If you remove the Deck CD with no soldering, the Laser may be damaged. Disconnect the following connectors: (CP8001, CP8002 and CP8005).

  • Page 16: Removal Of Anode Cap

    DISASSEMBLY INSTRUCTIONS 2. 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.

  • Page 17: Removal And Installation Of Flat Package Ic

    DISASSEMBLY INSTRUCTIONS REMOVAL AND INSTALLATION OF When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using FLAT PACKAGE IC a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 3-3.) REMOVAL NOTE Put the Masking Tape (cotton tape) around the Flat...
  • Page 18 DISASSEMBLY INSTRUCTIONS INSTALLATION When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thin- Take care of the polarity of new IC and then install the tip Soldering Iron. (Refer to Fig. 3-8.) new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.

  • Page 19: Service Mode List

    SERVICE MODE LIST This unit 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 and on the remote control for more than a standard time (second).

  • Page 20: When Replacing Eeprom (Memory) Ic

    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 setting for the position of the mark @ due to the adjustment value. Table 1 Enter DATA SET mode by setting VOLUME to minimum.
  • Page 21 ELECTRICAL ADJUSTMENTS BEFORE MAKING ELECTRICAL FUNCTION FUNCTION ADJUSTMENTS R CUT OFF BRI. AV(CENT.) G CUT OFF BRI. AV(MAX) Read and perform these adjustments when repairing the B CUT OFF BRI. AV(MIN) G DRIVE COL. AV(CENT.) circuits or replacing electrical parts or PCB assemblies. B DRIVE COL.
  • Page 22 ELECTRICAL ADJUSTMENTS 2-5: WHITE BALANCE 2-9: VERTICAL LINEARITY NOTE: Adjust after performing CUT OFF adjustment. NOTE: Adjust after performing adjustments in section 2-8. After the adjustment of Vertical Linearity, reconfirm Place the set with Aging Test for more than 15 minutes. the Vertical Position and Vertical Size adjustments.
  • Page 23 ELECTRICAL ADJUSTMENTS 2-11: OSD HORIZONTAL 2-14: SUB TINT CENTER Activate the adjustment mode display of Fig. 1-1 and Receive the color bar pattern. (RF Input) Using the remote control, set the brightness, contrast, press the channel button (33) on the remote control to color and tint to normal position.
  • Page 24 ELECTRICAL ADJUSTMENTS 2-15: SUB COLOR CENTER 2-16: SUB CONTRAST MAX Receive the color bar pattern. (RF Input) Activate the adjustment mode display of Fig. 1-1 and Using the remote control, set the brightness, contrast, press the channel button (15) on the remote control to color and tint to normal position.
  • Page 25 ELECTRICAL ADJUSTMENTS PURITY AND CONVERGENCE 3-3: STATIC 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. minutes before performing the following adjustments.
  • Page 26 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CRT PCB CP805 CD805 TP024 TP022 J801 CP801 CD802 POWER PCB AV PCB VR3800 CP101 J4203 J4202 J4201 FB401 TP3801 CP803A CP3802 CP402 CD402 L3800 AC IN CD8004 CP8004 CP3803 CP3800 CP401 CP802A...

  • Page 27: Mechanical Exploded View

    MECHANICAL EXPLODED VIEW PCB110 (CRT PCB ASS'Y) PCB030 (OPERATION PCB ASS'Y)
  • Page 28 MECHANICAL EXPLODED VIEW PCB020 (POWER PCB ASS'Y) PCB130 (DVD PCB ASS'Y) PCB250 (AV PCB ASS'Y)

  • Page 29: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description BZ310481 A5C2012720 CABINET,FRONT ASSY BZ710696 761WPA0252 COVER,PCB ASS'Y BZ710697 761WPA0250 HOLDER,FFC BZ710698 761WSA0093 ANGLE,DECK BZ710039 8995034000 CORD CLIP UL CO. BZ710699 761WPA0249 HOLDER,FBT BZ710401 769WPA0018 GUIDE,CONNECTOR(FFC) BZ710775 701WPJB907 CABINET,FRONT BZ710660 741WUA0021 SPRING,EARTH...

  • Page 30: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS R232 BZ210282 R00104154J 150K OHM 1/4W BZ210283 R001T4154J 150K OHM 1/4W ! R401 BZ210140 R002T2331J 330 OHM 1/2W R402 BZ210284 R3X28A271J R,METAL OXIDE 270 OHM 2W R408 BZ210285 R3X28AR47J R,METAL OXIDE 0.47 OHM 2W...
  • Page 31 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES D409 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D410 BZ410022 D97U06R81B DIODE,ZENER MTZJ6.8B T-77 D411 BZ410092 D2WXN49370 DIODE,SILICON 1N4937 ! D412 BZ410014 D2LTPG06J0 DIODE,SILICON RMPG06J-G3 D413 BZ410092 D2WXN49370 DIODE,SILICON 1N4937 D414 BZ410043 D2WT011E10 DIODE,SILICON...
  • Page 32 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description IC2301 BZ611126 I03F065600 LA6560 IC2601 BZ611127 I07F04066F BU4066BCF IC2602 BZ611128 I03FR97020 LA9702WL ! IC3000 BZ611054 I1KA98R050 KIA78R05PI ! IC3001 BZ611089 I1KA98R09A KIA78R09API ! IC3002 BZ611054 I1KA98R050 KIA78R05PI ! IC3003 BZ611054 I1KA98R050 KIA78R05PI...
  • Page 33 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description TRANSISTORS Q4203 BZ510088 TNAAD05001 COMPOUND TRANSISTOR KRC104SRTK Q4204 BZ510109 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK Q4205 BZ510090 TPAAB05001 COMPOUND TRANSISTOR KRA102SRTK Q4206 BZ510109 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK Q4207 BZ510109 TCAA3875SY TRANSISTOR,SILICON KTC3875S_Y_RTK Q4208 BZ510109 TCAA3875SY TRANSISTOR,SILICON...
  • Page 34 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description SWITCHES SW797 BZ612010 0504101T34 SWITCH,TACT EVQ21505R SW798 BZ612010 0504101T34 SWITCH,TACT EVQ21505R SW799 BZ612010 0504101T34 SWITCH,TACT EVQ21505R VARIABLE RESISTORS VR402 BZ210238 V1K6313BTE VOLUME,SEMI FIXED NVG6TLTAB102 VR3800 BZ210265 V1K63Q2BTE VOLUME,SEMI FIXED NVG6TLTAB471 P.C.BOARD ASSEMBLIES PCB020...
  • Page 35 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description MISCELLANEOUS CUS031 BZ710279 800WFAA006 CUSHION A CUS251 BZ710279 800WFAA006 CUSHION A CUS252 BZ710149 800WFAA008 CUSHION C ! DK4001 BZ310397 169G00014A DECK CD DVD-KDR717SK EL001 BZ614044 124120301A EYE LET XRY20X30BD EL002 BZ614043 124116281A...
  • Page 36 TV BLOCK DIAGRAM RESET IC103 PST3245NR AT+5.6V POWER ON/OFF TU001 REC/OTR MICON IC101 STOP EJECT OEC6070B X101 16MHz Q103 PLAY H.BUFFER Q205 Q105 FF/CUE PRE AMP MEMORY V-BUFFER 38 37 IC199 S-24C08ADPA-01 SAW FILTER FROM DVD BLOCK CF203 DVD C DVD Y Q4209, Q4210, DVD_A_OUT_L...
  • Page 37 DVD FRONT/BACK END BLOCK DIAGRAM TV BLOCK FRONT BACK DRAM S-DRAM 1.9V REG IC2002 IC4002 IC4006 PQ070XZ01ZP MA/MD_ MA/MD_ C, F, D CD/DVD MD/MA_DATA DATA DATA A, B, C, D, E, F MECHA T+/– RFN/P X4001 READ DVD/ F+/– TE/FE 27MHz MPEG CHANNEL...
  • Page 38 POWER BLOCK DIAGRAM Q3002, Q3003, Q3004 P.CON+3.3V P.CON+3.3V 5V REG. IC3002 KIA78R05PI P.CON+D5V 5V REG. IC3004 KIA78R05PI AT+5V 5V REG. TRANSFORMER SWITCHING IC3000 KIA78R05PI D3808, D3809, F3800 D3815, D3816 T3800 P.CON+5V RECTIFIER AC IN P.CON+5V 5V REG. IC3003 IC3800 LTV-817M-VB KIA78R05PI Q3800 Q3803...
  • Page 39 PRINTED CIRCUIT BOARDS DVD (TOP SIDE) DVD (BOTTOM SIDE) CP2301 CP2302 CP2601 Q2302 Q2303 B2601 R2307 D1001 R2302 R2324 Q2301 Q2304 L1001 W832 Q2603 Q2604 C2658 C4041 Q2615 R2671 C2620 C2602_1 C2612 R2607 C2023 C2050 IC4006 C2611 R2650 C2048 R2606 C2601_1 R2643 Q2614...
  • Page 40 PRINTED CIRCUIT BOARDS AV/CRT (INSERTED PARTS) SOLDER SIDE R407 R464 CP102 W242 VR402 R414_1 C429_1 R463 D415 W040 R421 D411 HS301 R417 CP401 IC302 W043 W023 W032 R419 W031 W246 R448 W030 W250 IC401 W245 R418 HS401 W029 B301 C450 D404 W052 FB401_3...
  • Page 41 PRINTED CIRCUIT BOARDS AV/CRT (CHIP MOUNTED PARTS) SOLDER SIDE C349 R639 C1520 Q608 C356 R1509 R1501 Q1502 C1515 C1514 R604 R1506 IC602 R1508 Q1501 R004 R003 Q603 Q609 R1505 C1519 C203 C202 C619 IC1501 C004 Q1503 Q205 Q4207 Q4208 W850 C208 Q4205 Q4212...
  • Page 42 PRINTED CIRCUIT BOARDS OPERATION SOLDER SIDE W015 W804 W806 W813 SW751_1 SW794 SW791 SW792 SW793 SW797 SW796 SW795 C779A R352 J351 D752 OS753 W809 R778 R777 R776 R775A W009 W018 J701_1 D792 C781 C702 CD355 CD757_1 R761A W011 R766 W013 Q752A CD356 W004...
  • Page 43 MPEG SCHEMATIC DIAGRAM (DVD PCB) C4039 W818 C4037 0.1 F R4012 4.7K FROM/TO DSP W829 MPEG_AT+3.3V MPEG_+1.9V DVDSTB TP4007 27MHZ DVDSOS DVDERR C4012 3P CH 2.0 2.0 1.9 2.2 2.1 1.9 1.9 1.9 2.8 1.61 2.8 3.27 3.27 1.89 1.62 3.24 1.02 1.0 3.24 3.24 0 1.63 3.24 0 1.18 3.24...
  • Page 44 MEMORY SCHEMATIC DIAGRAM (DVD PCB) FLASH IC IC4005 S-DRAM IC SST39VF800A-70-4C-EK FROM/TO SYSCON1 IC4002 MSM56V16160F-8 HA17 HA16 FLASHCS R4030 HA15 HWRH MD15 I/O15 I/O0 HA14 MD14 I/O14 I/O1 HD10 HD15 HA13 HD11 DQ15 HD12 VSSQ VSSQ HD13 HD14 HA12 HD15 MD13 I/O13 I/O2...
  • Page 45 SYSCON1 SCHEMATIC DIAGRAM FROM REGULATOR CD8502 (CP8005) (DVD PCB) CU262501 P.CON+D5V P.CON+5V L1001 P.CON+A5V P.CON+5V_A 2.2uH 0305 EEPROM IC P.CON+9V P.CON+9V_A IC1006 GND[M] S-24C04BFJ-TB MOTOR_GND FROM/TO REGULATOR B1001 CD8501 (CP8001) C1012_1 CU2D3001 TEST FCM2012H-102T04 R1004 B1002 AT+3.3V_M FROM/TO MOTOR DRIVE C1016 100P CH 4.7K...
  • Page 46 DSP SCHEMATIC DIAGRAM (DVD PCB) FROM/TO SYSCON1 GND[A] B2003 P.CON+D5V FCM2012H-102T04 P.CON+A5V AT+3.3V W842 HA12 HA11 HA10 C2002 0.1 B P.CON+A5V DVDRST DVDCS DVDIRQ FROM/TO MOTOR DRIVE NC NC NC NC TP2001 RFPI JVRVO TESTIO JVAIN C2043 R2035 SPD_FG DVDD2 JVAO C2034 0.01 B...
  • Page 47 MOTOR DRIVE SCHEMATIC DIAGRAM (DVD PCB) TO READ CNANNEL P.CON+9V CLOSE OPEN R2314 MOTOR DRIVE IC IC2301 LA6560 C2309 S-GND R2318 VCONT C2310 DMUTE VCC2 MUTE R2313 VLD- VIN4 FROM/TO SYSCON1 R2317 VLD+ VIN4- 5.6K P.CON+9V VD4+ VIN4+ AT+3.3V VD4- VREF-IN SPD_FG VD3+...
  • Page 48 READ CHANNEL SCHEMATIC DIAGRAM (DVD PCB) TP2602 B2602 FCM2012H-102T04 DVD LOADER GND[A] DK4001 C2626 DVD-KDR717SK 68P CH CDX2_CTL Q2606 R2630 C2627 FROM/TO LOADER B2604 R2604 KTC3875S_Y_RTK CDX2 R2623 220P CH CD2601 FCM2012H-102T04 R2605 2H0O2102 CDX4 CDX4_CTL R2634 Q2601 R2620 C2616 KTC3875S_Y_RTK R2640 C2634...
  • Page 49 AUDIO/VIDEO SCHEMATIC DIAGRAM (DVD PCB) FROM/TO SYSCON1 W833 VCC+9V W802 GND[A] AT+D5V L8505 SPDIF 9.2 8.5 15uH 0305 CPU_RESET REG. VCC+9V Q8506 SYS_MUTE HN1C03F_B CD/DVD AT+3.3V W830 R8516 680 DAC/D[CVBS] CVBS DAC_A R8515 DAC/C[C] 75 +-1% C(CVBS) FROM MPEG SPDIF-DVD W840 DAC/B[Y1] AMCLK...
  • Page 50 REGULATOR SCHEMATIC DIAGRAM FROM/TO POWER (AV PCB) CP8004 (CP3803) S104X S105X B2013H02-10P TO SOUND AMP CC002 TP-1S-05 UNREG+12V SOUND_GND UNREG+8V SOUND+B UNREG+5V P.CON+9V POWER_FAIL POWER_FAIL P.CON+5V STANDBY_H STANDBY_H DEGAUSS_H DEGAUSS_H SOUND+B UNREG+12V SOUND_GND 5V REG IC3000 KIA78R05PI TO COMB FILTER 3.3V OUT W864 Q3003...
  • Page 51 MICON/TUNER SCHEMATIC DIAGRAM (AV PCB) TU001 TECC1040PG32E TEST POINT CP101 07JQ-ST I2C SCL R005 I2C SDA I2C_OFF I2C OFF R174 TUNER_AGC 1/4W R119 AUDIO OUT L AUDIO OUT R Q104 FROM/TO IN/OUT KTA1504S_Y_RTK EXT_MUTE TV/DVD AUDIO_OUT_R AUDIO_OUT_L D104 R125 MTZJ6.8B FROM/TO VIF/SIF/CHROMA 3.3K R140...
  • Page 52 VIF/SIF/CHROMA SCHEMATIC DIAGRAM (AV PCB) R626 Q601 KTC3875S_Y_RTK W901 L203 100uH 0305 EXT AUDIO DRV. Q204 KTC3875S_Y_RTK R220 R602 R226 FROM REGULATOR C227 DVD_Y S105Y DVD_C R204 T.V.BUF. 3.3K Q203 P.CON+5V R205 KTC3875S_Y_RTK L205 P.CON+9V 12uH CLAMP L201 R208 Q202 R202 KTC3875S C226...
  • Page 53 SOUND AMP SCHEMATIC DIAGRAM (AV PCB) FROM/TO OPERATION SOUND AMP IC AN7522 IC302 CP303 (CD702) A2001WV2-11P FRONT_VIDEO_IN FRONT_A_IN_L SOUND_GND SOUND_OUT_L SP_OUT_L R311 C307 C348 FRONT_A_IN_R 100K 0.033 0.033 SOUND_OUT_R SP_OUT_R HS301 763WAA0199 FROM REGULATOR B301 SOUND+B W4BRH3.5X6X1 SOUND_GND TO IN/OUT P.CON+9V SOUND_L+ P.CON+5V...
  • Page 54 IN/OUT SCHEMATIC DIAGRAM (AV PCB) MUTE SW Q4205 MUTE SW KRA102SRTK Q4207 FROM/TO AV SW KTC3875S_Y_RTK MUTE SW MONITOR_AUDIO_L Q4204 KTC3875S_Y_RTK R4225 2.2K MONITOR_AUDIO_R MUTE SW DVD_AUDIO_L R4214 R4226 Q4208 DVD_AUDIO_R KTC3875S_Y_RTK 10K 1/4W 2.2K SWD_V_OUT REAR_A_IN_L REAR_A_IN_R REAR_V_IN L4202 100uH R4266 R4270...
  • Page 55 AV SW SCHEMATIC DIAGRAM (AV PCB) R4217 R4215 S902Y S902X FROM REGULATOR S901X S901Y L4205 P.CON+9V 100uH 0305 DVD_VIDEO FROM/TO MICON/TUNER SWD_V_OUT FROM STEREO AV SW IC IC4203 MM1311AD C4228 C4256 R4255 C4259 R4274 TU_AUDIO_L DVD_VIDEO TU_AUDIO_L 6.3V TU_AUDIO_R C4268 C4246 R4278 TU_VIDEO...
  • Page 56 COMB FILTER SCHEMATIC DIAGRAM (AV PCB) C1511 0.47 FROM REGULATOR L1503 P.CON+5V C1518 820uH 6.3V C1519 0.01 B C1524 FROM AV SW 56P CH C1521_1 R1513 MONITOR_VIDEO BUFFER Q1503 KTC3875S_Y_RTK C1504 0.01 B FROM/TO VIF/SIF/CROMA COMB_Y_OUT C1516 COMB_C_OUT C1517 R1509 BUFFER C1502 Q1501...
  • Page 57 STEREO SCHEMATIC DIAGRAM (AV PCB) FROM/TO MICON/TUNER R911 R912 TO AV SW TU_AUDIO_L TU_AUDIO_R FROM VIF/SIF/CHROMA IIC Decoder St.PLL OUT SW Pilot Input Cancel Switch L-R Filter L-R Demod Matrix De-Emph Pilot (L-R)/SAP Filter Filter Filter 75us L+R Filter L+R Demod Stereo Noise Filter...
  • Page 58 DEFLECTION SCHEMATIC DIAGRAM (AV PCB) V.OUTPUT IC IC401 LA78040 THERMAL PROTECTION PUMP UP 25.5 12.9 24.8 W843 TO DY CP401 A1561WV2-A5P C435 L402 560P CH FROM/TO VIF/SIF/CROMA R413 R416 ELH5L4113 R412 V.OUT R448 8.2K 27K +-1% 47K +-1% R420 1K 1W 2.2K C450 H.OUT...
  • Page 59 CRT SCHEMATIC DIAGRAM FROM VIF/SIF/CHROMA CP802B (CP802A) B2013H02-5P (CRT PCB) CLAMP G.OUT R.OUT B.OUT FROM DEFLECTION C803 CP803B (CP803A) B2013H02-4P 0.001 HEATER 180V CP801 A2361WV2-2P RED AMP GREEN AMP BLUE AMP Q801 Q803 Q802 2SC1740SP TP 2SC1740SP TP 2SC1740SP TP 100.6 98.4 95.4...
  • Page 60 POWER SCHEMATIC DIAGRAM (POWER PCB) D3802 TO DEFLECTION 1SS133 CP3802 (CP402) R3808 52147-0610 10K 1/4W D3823 RELAY DRIVE Q3801 SB290S KTC3198 RY3800 D3824 ALKS321 H_GND (LKS1af-12V) SB290S H_GND TP3801 PH3800 D3821 003P-2100 B3801 DEGAUSS COIL L3800 W5RH3.5X5X1.0 RU2AM-EIC 8R200024 CP3800 C3824_2 TH3800_1 A1561WV2-2P...
  • Page 61 OPERATION SCHEMATIC DIAGRAM (OPERATION PCB) FROM/TO MICON/TUNER CD757_1 (CP102) CU292501 REMOCON_OUT AT+5V POWER_ON_LED KEY_A KEY_B R778 R771 R772 R773A R774 820 1/4W 1K 1/4W 1.5K 1/4W 2.7K 1/4W 5.6K 1/4W POWER LED SW Q752A Vout KRC114MAT OS753 R775A R776 R777 PIC-28143TC5 820 1/4W 1K 1/4W...
  • Page 62 INTERCONNECTION DIAGRAM CP2601 CD2601 (NC) (NC) DRIVE CP8001 CD8501 REAR A/V OUT JACK REAR A/V IN JACK COAXIAL GND-PD GND-PD J4202 J4203 J4201 CD702 CP303 HEADPHONE JACK J351 FRONT_VIDEO_IN FRONT_VIDEO_IN P.CON+9V P.CON+9V FRONT_A_IN_L FRONT_A_IN_L P.CON+9V P.CON+9V GND/SOUND GND GND/SOUND GND P.CON+D5V P.CON+D5V SOUND_OUT_L...
  • Page 63 WAVEFORMS MPEG SYSCON1 MICON/TUNER 20ns 10ns 500mV 1.0V 100ns 20ns 1.0V 1.0V 100ns 20ns 1.0V 1.0V READ CHANNEL 200ns 1.0V 200mV MEMORY 200ns 1.0V 200mV NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 64 WAVEFORMS VIF/SIF/CHROMA SOUND AMP IN/OUT NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 65 WAVEFORMS AV SW DEFLECTION TV POWER STEREO NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.
  • Page 66 TOSHIBA VIDEO PRODUCTS PTE. LTD. 438B ALEXANDRA ROAD, BLOCK B #06-01 ALEXANDRA TECHNOPARK SINGAPORE 119968...

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