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ELECTRICAL ADJUSTMENTS

D2-5

3. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE

(VCR SECTION)

TP1001

TP4501

TU601

J4501

TP602

CP603

TP4001

TP4002

SYSCON PCB

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Summary of Contents for MD17

Page 1: ...SERVICE MANUAL Design and specifications are subject to change without notice COLOR TELEVISION VIDEO CASSETTE RECORDER MD17 ORIGINAL MFR S VERSION A PAL...

Page 2: ...ther 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 sur...

Page 3: ...OUT T TEXT PRINTED CIRCUIT BOARDS OPERATION DECK MAIN CRT POWER SW SYSCON SCHEMATIC DIAGRAMS Y C AUDIO HEAD AMP MICON POWER 21PIN IN OUT CHROMA SOUND AMP T TEXT SECAM CHROMA HI FI TV POWER DEFLECTION...

Page 4: ...on CCIR Hyper France CATV Tuning System F Synth Input Impedance VHF UHF 75 ohm CH Coverage SECAM F2 F4 FB FQ F21 F69 PAL E2 E4 X Z 2 S1 S10 E5 E12 S11 S41 E21 E69 Intermediate Frequency PAL SECAM U VH...

Page 5: ...Sleep Time Yes Control Volume Yes Level Bright Contrast Sharpness Color Yes Tint No Bass Treble Balance No Manual Tracking Yes Play Stop FF Rew Rec OTR T Rec Pause Eject Tape In Symbol Mark Yes Auto T...

Page 6: ...Yes Play Up No Play Up Slow Yes F Fwd Right Yes Rew Left Yes Pause Still Yes Pause No Stop Down Yes Rec OTR Yes Eject Yes Counter Reset Yes Speed No Timer Rec Yes TV Monitor Yes TV Monitor Rec Monito...

Page 7: ...s Hotel Lock No TV Monitor Yes TV Rec Monitor No Choke Coil No G 14 Accessories Owner s Manual Language Fre w Guarantee Card No Remote Control Unit Yes Rod Antenna No Poles Terminal w 300 ohm to 75 oh...

Page 8: ...ideo Input No Audio Input No Video Output No Audio Output No Euro Scart 1 SCART Diversity No Ext Speaker No DC Jack 12V Center No VHF UHF Antenna Input DIN type AC Inlet No G 16 Set Size Approx W x D...

Page 9: ...Refer to Fig 1 4 1 2 3 4 5 6 Remove the screw 1 Remove the Main PCB Holder Remove the 2 screws 2 Remove the 3 screws 3 Disconnect the following connectors CP810 and CP820 Remove the Main PCB in the d...

Page 10: ...e Bottom 1 5 DECK SHIELD PLATE Refer to Fig 1 5 1 2 3 4 5 6 Remove the 2 screws 1 Remove the 4 screws 2 Remove the screw 3 Remove the Deck Shield Plate in the direction of arrow A Remove the screw 4 R...

Page 11: ...sis Main Chassis Cassette Side L Cassette Side R Locker R Fig 2 4 2 5 CASSETTE SIDE L R Refer to Fig 2 5 Unlock the 4 supports 1 and then remove the Cassette Side L R 1 Screw Torque 5 0 5kgf cm B2 1 2...

Page 12: ...and Ass y Unlock the support 3 and remove the Tension Holder Remove the SS Brake Spring Remove the SS Arm Brake 1 2 3 4 5 6 7 8 1 2 1 Loading Motor Ass y Link Lever Main Chassis Screw Torque 5 0 5kgf...

Page 13: ...Spring Remove the screw 1 Unlock the 2 supports 2 and remove the Cassette Opener Remove the Pinch Roller Block Pinch Roller Arm Spring Pinch Roller Lever Ass y and P5 3 Arm Ass y 1 2 3 4 1 2 2 P5 Spri...

Page 14: ...tan DD Unit 1 2 3 Screw Torque 5 0 5kgf cm Fig 2 16 2 17 MIDDLE GEAR MAIN CAM Refer to Fig 2 17 A Remove the Polyslider Washer 1 then remove the Middle Gear Remove the E Ring then remove the Main Cam...

Page 15: ...e the Loading Gear Spring 2 When you install the Clutch Actuator install as shown in the circle of Fig 2 19 C Refer to Fig 2 19 C Fig 2 19 C Clutch Actuator NOTE Do not touch the roller of Guide Rolle...

Page 16: ...p up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support Refer to Fig 3 2 2 GND on the CRT Screwdriver Alligator Clip Support CRT GND on the CRT Rubber Cap CRT...

Page 17: ...op Frequency Generator Front Loading Switch Frequency Modulation Frequency Sub Carrier Forward Generator Ground High Pass Filter I K L M N O P R S H SW Hz IC IF IND INV KIL L LED LIMIT AMP LM LDM LP L...

Page 18: ...or Separation Transistor Tracking Trick Playback Test Point Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse Voltage Display Video Playback Variable Resistor...

Page 19: ...osition NOTE Also can be adjusted by pressing the ATR button for more than 2 seconds during PLAY VOL MIN 5 POWER ON total hours and PLAY REC total hours are displayed on the screen Refer to the PREVEN...

Page 20: ...and parts which the rubber touches Replace when rolling becomes abnormal Clean the Head CONFIRMATION OF USING HOURS POWER ON total hours and PLAY REC total hours can be checked on the screen Total hou...

Page 21: ...t horizontally Clean the full erase head in the samemanner Refertothefigurebelow Audio Control Head 2 TAPE RUNNING SYSTEM When cleaning the tape transport system use the gauze moistened with isopropyl...

Page 22: ...l required ADDRESS to be changed is reached Press ENTER to select DATA When DATA is selected it will blink Again step through the DATA using PLAY or STOP button until required DATA value has been sele...

Page 23: ...justment Guide Roller Adjustment JG154 Used to connect the test point of SERVICE and GROUND Ref No APJG001E00 APJG001R00 APJG001F00 APJG001U00 APJG001C00 APJG001D00 APJG001V00 APJG002B00 APJG002E00 AP...

Page 24: ...JG162D Connect the Syscon PCB to the CRT PCB with the cable JG162Y Remove the Operation PCB from the set then connect it with the Syscon PCB If necessary connect CP351 Short circuit between TP1001 an...

Page 25: ...ght Adjustment Jig JG024A A Cut Position Fig 1 2 B B Tension Adjust 1 3 CONFIRMATION OF PLAYBACK TORQUE AND BACK TENSION TORQUE DURING PLAYBACK Load a video tape E 180 recorded in standard speed mode...

Page 26: ...adjusted precisely at the factory Adjustment is not necessary as usual When you replace the parts of the tape running mechanism because of long term usage or failure the confirmation and adjustment a...

Page 27: ...fer to item 2 2 Connect CH 1 of the oscilloscope to TP4002 CH 2 to TP4001 and CH 3 to HOT side of Audio Out Jack Playback the VHS Alignment Tape JG001S or JG001T Refer to SERVICING FIXTURE AND TOOLS P...

Page 28: ...NTS 3 MECHANISM ADJUSTMENT PARTS LOCATION GUIDE 5 6 7 8 9 10 1 2 3 4 1 Tension Adjust 2 Tension Arm 3 Guide Roller 4 P1 Post 5 Audio Control Head 6 7 8 9 10 X value adjustment driver hole P4 Post T Br...

Page 29: ...gital voltmeter is 2 4 0 1V NOTE 1 H V 2 WHITE BALANCE 3 SECAM 4 PICTURE 5 OTHERS 6 7 8 VOL TEST 0 END Fig 1 1 2 BASIC ADJUSTMENTS VCR SECTION 2 1 PG SHIFTER 1 2 3 4 Connect CH 1 on the oscilloscope t...

Page 30: ...R DRIVE or B DRIVE Using the PLAY or STOP button on the remote control adjust the G BIAS B BIAS R DRIVE or B DRIVE Perform the above adjustments 7 and 8 until the white color is looked like a white 1...

Page 31: ...remote control to set to the AV mode Then perform the above adjustments 2 5 2 11 VERTICAL SIZE 60 Receive the monoscope pattern Audio Video Input Using the remote control set the brightness and contra...

Page 32: ...above adjustments 3 7 2 17 SUB CONTRAST PAL 1 2 3 4 5 6 7 Receive the PAL color bar pattern RF Input Using the remote control set the brightness and contrast to normal position Activate the adjustment...

Page 33: ...ELECTRICAL ADJUSTMENTS D2 5 3 ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE VCR SECTION TP1001 TP4501 TU601 J4501 TP602 CP603 TP4001 TP4002 SYSCON PCB...

Page 34: ...ELECTRICAL ADJUSTMENTS D2 6 TV SECTION MAIN PCB FB401 FOCUS VOLUME SCREEN VOLUME VR502 CRT PCB J801 TP801 TP401 T501...

Page 35: ...performing adjustments in section 4 1 1 2 3 4 5 Receive the green raster pattern from color bar generator Adjust the pair of purity magnets to center the color on the screen Adjust the pair of purity...

Page 36: ...6 67 68 69 7 70 71 72 73 74 75 76 77 78 79 8 80 81 82 83 84 85 86 87 88 89 9 90 91 92 93 94 95 96 97 98 99 X4001 4 433619MHz CP4004 TMC T02X E1 1 2 CP4005 IMSA 9604S 06Z14 1 2 3 4 5 6 OF PRINTING AND...

Page 37: ...TAL TRANSISTOR S818Y S819X S819Y AT 5 6V AT 5V GND FWE VCR_POWER_H MD0 RESET SVL_M SEN_LED SECAM_L CAP_F R TEXT_Y TV_A_MUTE CYL_DRIVE SDA CONTROL_IN SECAM_MO H REMOCON_IN POWER_FAIL DC SCL CAP_VCO VV_...

Page 38: ...F C1058 1 F C1049 0 1 B OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME S818X AT 12V CAP_VCO MOTOR_GND P CON 5V_A P CON 5V P CON 5V_B GND P CON...

Page 39: ...470P CH C4502 1 F C4505 0 018 B C4517 1 B C4508 0 1 B C4206 100P CH C4203 0 1 B C4204 0 1 B C4510 0 0022 CH C4516 470PCH C4515 470P CH C4501_1 10 16V KA C4514 47 16V KA C4506 47 16V KA CP605 8283_0412...

Page 40: ...27 0 1 B C644 1 B C640 0 01 B C659 0 0012 B C694 100P CH C621 0 01 B C609 0 01 B C651 0 22 B C649 560P B C652 0 001 B C650 10 16V KA C628 47 16V KA C613 0 47 50V KA C660 47 10V KA C643 0 47 50V KA C64...

Page 41: ...WAS W813 W834 W810 W812 Q352 2SC2412K SW Q351 2SC2412K MUTE C354_1 2200 25V YK C353 1000 16V YK C368 1000 16V YK C351 10 16V KA C352 10 16V KA R313 820 R353_1 68K R354 2 7K R1100 3 9K R359 10K R314 33...

Page 42: ...W820 W861 W823 W854 C882 3 3 50V KA C881 3 3 50V KA C883 3 3 50V KA OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME Y C_VIDEO_OUT MONITOR_V TEXT...

Page 43: ...Hz OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE NOTE THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME CAUTION DIGITAL TRANSISTOR EE VV LOW_C SECAM_L SEC_PB_C SECAM_SW SEC_REC_L P CON 5V_B SECAM_L...

Page 44: ...ATTENTION R529 2 7K 1 Q506 KRC111MAT 5V SWITCHING Q513 DTC114ES 5V SWITCHING D515 MTZJ30B D528 MTZJ5 6B W836 W846 W009 W810 W821 W820 Q507 KTC3198 FEED BACK SWITCHING Q501 2SC2909 130V SWITCHING Q504...

Page 45: ...C403 10 50V YK C405 4 7 50V YK C422_1 1 250V MHE C406_2 100 35V MHE C407 2200 25V YK C431 10 250V YK R456 4 7K 1 2W R455 270 1 2W R470 220 1 2W R460 100 1 4W R453 120K 1 4W R409 20K R401 18K 1 4W R40...

Page 46: ...POINT DE VUE SECURITE ETANT LES PIECES REPAREES PAR UN ATTENTION W804 W808 W814 W803 W845 W042 W843 W043 W839 W040 Q805 2SC4217 GREEN AMP Q804 2SC4217 RED AMP Q806 2SC4217 BLUE AMP C820 4 7 250V YK R...

Page 47: ...1 2 3 4 5 6 7 CD757 CH2A014A 1 10 2 3 4 5 6 7 8 9 B701 BL01RN1 A63 B702 BL02RN2 R62T2 DESCRIBED IN PARTS LIST ONLY CRITICAL FOR SAFETY USE ONES ARE SINCE THESE PARTS MARKED BY CAUTION DANS LA NOMENCL...

Page 48: ...UTILISER QUE CELLS DECRITES DANGEREUSES AN POINT DE VUE SECURITE ETANT LES PIECES REPAREES PAR UN ATTENTION DURING PLAYBACK MEASURED WITH THE DIGITAL TESTER NOTE THE DC VOLTAGE AT EACH PART WAS CP101...

Page 49: ...IDEO CD757 GND OPERATION PCB INTERCONNECTION DIAGRAM CD1005 CD1006 CD4005 AUDIO PB V PULSE V PULSE J801 CRT SOCKET 4 6 9 8 7 5 3 F 1 SOUND_GND SP_OUT VM9171 SYSCON PCB PCB010 VIDEO IN GND GND GND R G...

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