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SERVICE MANUAL
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1. 1 TO DAM 301 TO DC 256 TO 256 TO DAM 301 TO DLC 138 18 TO EQ DOLBY NR REC AMP BOARD 30 PARTS LIST Q ty INTEGRATED CIRCUIT amp TRANSISTORS 9121 LSI IC701 DN838 Hall IC 702 7122 601 602 7122 Description 1 4558 6 NE646BN IC 801 802 25 56 Transistor Q710 25 963 Transistor 0731 733 735 2SC828 QR 0204 401 408 429 430 451 601 604 651 652 705 707 713 721 722 732 734 736 Q202 704 709 Q201 701 703 Transistor 25C1383 0R 25C2209 0R Transistor Transistor 708 605 2SD592ANC OR Transistor Q708 250 389 QR Transistor Q250 N13T1 P U T 0711 15188 1 60 20490 151555 150 Germanium Diode D401 404 Silicon Diode 0451 707 711 721 722 1N4002 Silicon Diode D201 204 209 211 214 701 706 1N4002 Silicon Diode D210 216 217 GP 15B Silicon Diode D205 208 26 3 Zener Diode 02203 HZ9 2 B Zener Diode DZ701 HZ12 3 C Zener Diode DZ202 702 HZ24 3 Zener Diode DZ201 GL 9PR2 LED LED701 705 CONTROLS Potentiometer Potentiometer Carbon Trimmer Carbon Trimmer Carbon Trimmer Carbon Trimmer EWK HWA332A24 EWK G4A323703 EVT R4S00B24 20k Q B 89 5
2. SPEED CONTROL Screw ALIGNMENT POINT AZIMUTH Screw Fig C SVR401 SVR402 SV R682 5 Shield Plate TP806 TP603 ef TP604 es TP60 e TP606 SVR631 TP602 L631 Qa SV R632 L632 vn O SVR601 SVR602 9 SV R684 DOLBY NR REC BOARD DAM 301 e gt e I c Eu DS lt E z lt 2 e B B lt ee HP JACK Meter Ded xb XE vr es 4 52 r M o For E 5 LOGIC CONTROL BOARD DLC 138 16 REC MUT GNB Lch ch OUT LIN 198 R ch LINE IN LOGIC CONTROL BOARD DLC 138 1B PATTERN CUT TO DPS 183 K I POWER SUPPLY BOARD DIN AMP BOARD DPS 183 1 DDA 167A TO EQ DOLBY REC AMP BOARD DAM 301 TO POWER TO POWER TO POWER TRANS Sec TRANS PRI TRANS Sec TO AC LINE POWER SW I I I
3. 25 25TW 10uF 25TW 251 100 25 35 0 35 100uF 35TW 1000uF 50 SOTW 50 50 220 APPEARANCE PARTS N10148 N20395 BK N41232 GY1 N41233 GY 1 N41281 S Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Front Panel Cass Holder Side Cap Right Side Cap Left Push Button Power C637 638 C215 C611 612 217 C407 408 643 644 C219 C218 C667 668 C212 403 404 710 807 813 814 821 823 824 822 808 665 666 741 C631 632 C704 C705 C802 C214 C707 C663 664 C401 402 641 642 C213 609 610 639 640 C208 605 606 635 636 669 C210 617 618 683 801 C209 211 C250 C731 732 733 C205 C721 C405 406 684 706 711 712 C708 C206 N41265 N30254A N41291 N41661 N41660 N30248A N30251 N41266 N41293 N41443 N41250 T N41109 N20398 S T C CT3309F No 18 No 24B N41471A N41404 T CH 1xLx1 N30231A N41421 N41532 N41533 N20395 NH N20382A N30453 N41380 N20668 N41282 N41313 N40769A N41318 N40487 N20389 N20390A N41424 N
4. 6 x 18 Action Plate Spring H Screw W Spring Washer 3 x 5 Eject Cord Spring F Screw W Flat Washer 2 6 x 7 Erase Head Spring A Washer Faced Head Screw 2 6 x 4 5 Back Tension Spring B Washer Faced Head Screw 2 6 x 6 5 Eject Cord Hook D Tapping Screw 2 6x 6 Micro Switch SS 5GL 13 Tapping Screw 2 6 x 5 REC Sensor Ass y Spring Washer M2 6 Counter Belt 1x58 Flat Washer 2 8 x 7 5 x 0 5 Rubber Cushion P S W 2 1 x4 x 0 13 Adjusting Screw P S W 2 6 x 4 7 x 0 25 Brake L P S W 2 6 x 4 7 x 0 5 Brake R P S W 5 2 x 8 0 x 0 5 Reel Cap C Spring Pin 3 x 16 Rubber Cushion C Rivet 2x 3 Main Belt 84 x 4 x 0 4 60 E Ring E 1 5 Felt 1x6x4 E Ring E 2 0 Drive Belt 1 3 x 72 6 70 E Ring E 2 5 Rubber for Brake B Steel Ball M2 5 Collar 2 8 x 38 5 WON a gt NN WH N AHN a Aa A a a N N N N Q O N O Q N NOTE 1 Part orders must contain Model Number Part Number and Description 2 Ordering quantity of screws and or resistors must be multiple of 10 pcs EXPLODED DIAGRAM A X192 01144 9 MODEL CT 3309 AUGUST 21 1978 ISSUE DATE FD 710 MK 2 A POWER SUPPLY BOARD DPS 183 1 51 REC PLAY SW
5. 1 19 C403 R4 0403 2 74 25447 R65 C642 27k 9654 C644 1022 OOO 3 3 4 EQ hy LINE QUT LR ma BOARD 7 133 REFER TO LEFT SIDE E L CIRCUIT DIAGRAM LOGIC CONTROL BOARD DLC 13815 930K lt 0713 BOARD TA 7 Jl 54 _ Be I 0 ES as LOGIC SWITCH 122 O O O DLS CHI 90 1 0701 FUNCTION CONTROL e og el MEMORY 1 2 CL E FG SERVO RUE MEMORY 8 oc moror 10 9 O FF 5 ON 0 O 5 OP Ge 0705 0 097 97 Y E 0033 100 ssi WALL FULL AUTO 2 IC SHUT OFF 16702 Mas j YA 518 132 1 gt 174 4 P LINE R613 55 T P605 C 663 12 gt 130K 49 K R P LEFT 49 5110 90 rh z 9 7 lt RIGHT 229 26 m n gt oF M R o 15503 2 3 P MEAD R603 e R K 0 zc ds 675 5 4 E DIN 1 SOCKET R 616 8 8 rz 18 2 Gn 8 3 5 EE TP805 i C O O reve O d ud
6. 22015T Fuse 200mA FU1 2 FU 522025T Fuse 2A FU5 FU 523125T Fuse 3 5A FU6 7 FU 525015T Fuse 500mA FU8 9 KL 258T 6 VU Meter 8 0 044 633 Lamp LA901 902 PL12303003A Lamp LA905 FUSE HOLDERS RESISTORS YAW 3 3kQ Metal Film R811 812 2 AW 6809 Carbon R681 1 1W 5 60 Carbon or Metal Film R209 1 CAPACITORS Ceramic HE40SJSL200K C607 608 659 660 C647 648 681 682 HE70SJSL201K A Ceramic HE70SJSL271K Ceramic C825 826 2 HE70SJYF103Z Ceramic C713 716 4 HE13SJYF473Z Ceramic 201 204 684 5 50V 100pF K Styrol C603 604 2 50V 560pF Styrol C645 646 2 ECNC4A 103M Oil C251 252 2 50V Mylar 5 C815 816 2 50V 06 Mylar 5 C649 650 817 4 818 50V 00068 Mylar 5 C615 616 651 6 652 655 656 50V 0 0082uF Mylar 5 C661 662 50V 0 027 uF Mylar 5 C653 654 819 820 50V 0033 Mylar 5 C657 658 50V 0 1uF 5 C805 806 50V 0 033 uF Mylar 20 C452 709 ECEASOMR33 Electrolytic MS C803 804 ECEASOMR47R Electrolytic MSR C811 812 ECEA16M10R Electrolytic MSR C601 602 10 Electrolytic C216 PARTS LIST Q ty 10 100uF 10 220 10 470uF 10 10 000 10TW 2200 16TW 4 7 pF 16TW 16TW 16TW 16TW 100uF 16TW 16TW 1000uF 25TW 3 25TW
7. 41662 N42098 Push Button Eject Knob Lever Reset Button Knob 21 Knob 44 Cass Compartment Meter Plate Top Cover Alum Plate DB Meter Window Cass Window Counter Window Case Foot Cass Mechanism Mica for Q250 Bushing for Q250 Heat Sink Heat Sink Terminal Bottom Plate Shield Plate Eject Hook Slide Lever Cass Case Meter Frame Cass Plate Decoration Screw Rear Chassis Lamp Holder Display Plate Cass Sheet Poly Bag Poly Bag Pad Right Pad Left Pad Top Carbon Inner Carton Rec Balance Rec Level Cass Holder Logic Cont For Unit For Inst Book Q ty RR MISCELLANEOUS PACKING MATERIAL NOTE 1 Part orders must contain Model Number Part Number and Description 2 Ordering quantity of screws and or resistors must be multiple of 10 pcs 3 Resistors not detailed in parts list are all carbon type watt with regard to the value refer to the schematic diagram PARTS LIST CASSETTE MECHANISM CT 3309F Lew Drive Arm Ass y Idler Arm Collar Reel Ass y SA Eject Lever Collar H Reel Ass y TA Motor Pulley 2 x 12 8V 9 8RD Drive Pulley Ass y Lug E Soft Dumper Ass y D Washer Counter SMP390 189 Pressing Metal Counter Belt Action Arm Bracket A S K Binder SKB 1M Action Arm A Board 13 Head Panel Pushing Plate Wire Red Rew Arm Wire Black Hea
8. C615 R6 22 gt 1 9 1 ll 00068 27K 555 1 14 5 3 RP R P DOLBY NA E a RP DOLBY NR 33 E 8 LOFT jd RIGHT TE 50 12 LINE 091 L 0 a mts 480 1 504 4 se 2 2 44 Ss 10 EQ 00 8 WR PII P C BOARD C604 9614 470 R616 fon C616 9618 00068 29 FRONT VIEW Push Button Eject Button Case N41281 S N41265 N20398 S N41109 Cassette Window Meter Plate N30251 Front Panel N10148 Knob 44 N41660 Reset Button N41291 BLOCK DIAGRAM FUNCTION KEY Lever Knob x6 N30254A 701 0701 702 731 511 22 732F F DRIVE F F DRIVE AMP SOLENOID EE PLAY 0702 512 EA CONTROL REW DRIVE REW DRIVE AMP SOLENOID REC LOGIC 5 Q703 SL3 17 cU s REC SOLENOID REC DRIVE ee DRIVE AMP SOLENOID PAUSE 7 7 CY ERASE HEAD F G SERVO DC MOTOR E 0705 706 702 FULL AUTO BIAS 71707 711 SHUT OFF CIRCUIT TO R P HEAD OSC E Lev 1 601 EQUALIZER AMP SHOWN LEFT CHANNEL ONLY Q601 603 REC AMP VR601 k PIN7 Q407 MUTING CIRCUIT 0409 CIRCUIT Knob 21 N41661 LEVEL METER HEADPHONE JACK LINE OUT
9. IMUTH Screw 1 LINE OUT MAXIMUM TAPE SPEED Test Tape MTT 111D Speed Control P 2 SAME AS STEP 1 FLUTTER 3kHz LINE OUT 0 5 2 VU METER BIAS NORMAL T 5 8 o LINE IN 805 605 L Function REC TP806 606 R SAME AS STEP 3 SAME AS STEP 3 VU METER PLAYBACK LEVEL Test Tape MT 1 150 DOLBY LEVEL CALIBRATION TONE 200nWb m Live GND REC LEVEL REC BALANCE 999mv DOLBY LEVEL D SVR402 s position See Fig C Live GND TP805 605 1 TP806 606 R SVR601 L 5 SAME AS STEP 1 SV R602 580mV BIAS TRAP BIAS METAL Live GND 601 605 1 Function REC TP602 606 R RECORDING LEVEL CALIBRATION 400Hz LINE IN SAME AS STEP 3 90mV LINE OUT EES 240 L631 L 1632 MINIMUM REC BALANCE Test Tape CS 10 Blank CS 10 SVR631 L Recorded in step 7 pe SV R632 BIAS VOLTAGE Live GND SAME AS STEP 3 TP603 605 L S POST 0 604 606 mM same SVR TT The Bias Voltages indicated in the above table do not necessarily provide the best frequency response for the unit SAME AS STEP 1 Approx 4 5 under test Further adjustment may be required to obtain optimum high frequency response Fig Front Fig B Rear
10. ITCH PLAY 2 INPUT SELECT SWITCH LINE 217 4 TN 54 BIAS SELECT SWITCH NORMAL 4 35A 58 DOLBY NR amp MPX FIL SWITCH rve 04355 56 TIMER SWITCH REC PLAY OFF LL AC220Y 1 MEMORY FUNCTION SWITCH OFF 8 MEMORY OFTECT SWITCH OFF y 0210 9 ERASURE PROTECT SWITCH 107 3 Bot 510 AUTOMATIC ON OFF SWITCH 8 WITH CASSETTE a sv s FUNCTION KEY SWITCH 2 512 EJECT SWITCH OFF Fu 513 POWER SWITCH OFF 4 ISA UPC 4558 IC 603 TA1122P IC 60 60 NE IC 801 1C9121P 085425 IC 702 METER 254564 Q 710 9 3 LAMP 254963 6 131 133735 086 75 14903 250828 Q 204 507 603 604 401 402 121 651 652 403 404 405 406 407 408 429 722 430 105 706 107 732 113 734 250 1383 0 207 m 709 136 250 2209 Q 201 717 113 708 605 701 4 00187 0 aa LAMP 0 401 407 404 m 6L 9PR2 LED 20 202 103 704 705 490 1500151555 O 451 707 208 709 710 711 721 722 0 3 8 184007200 201 202 203 204 209 eT ey MA m m A 2 212 713 214 d 1 0 1 16 5 5 2 101 10 703 904 105 706 4 Sod 184002 0 210 216 277 2 0 205 206 70 708 560 Eu 18 z 280389 260 4 5 R68 680 ew e 2 1 24 ap SVR68 1 1 15 5 SOK ME SYR68 see 1344 VP SWITCHED 1724 194 200 8 55 LINE OU 55
11. SERVICE MANUAL FD 710 MK2 Stereo Cassette Deck SPECIFICATIONS Track System Tape Speed Wow and Flutter Frequency Response Signal to Noise Total Harmonic Distortion Erase Ratio Bias Frequency Fast Forward and Rewind Time 4 track 2 channel stereo recording and playback 1 7 8 i p s 4 75 cm sec 0 07 WRMS 30 18 000Hz 3dB Metal tape 30 18 000 3dB CrO tape 30 14 000Hz 3dB Normal tape Dolby NR off 5308 Dolby NR off CrO or Metal tape CCIR ARM weighted 1kHz The S N is improved by 8dB with Dolby NR on 1 8 at 1kHz OVU 6508 SRL 10dB 72 70 seconds 60 tape Input Sensitivity l mpedance 0 25mV 12 kohms LINE 80mV 25 kohms 0 2mV 1 kohms Output Level at Dolby level HEADPHONES 50mV GENERAL Power Consumption 19 watts Power Supply 110 220 50 60Hz Dimensions 442 W x 354 D x 133 H mm Weight Net 7 2kg 15 9 Ibs Accessory Shielded Audio Cables 2 DOLBY NR Dolby NR under license from Dolby Laboratories e The word DOLBY and Double D Symbol are trade marks of Dolby Laboratories Specifications and design are subject to change without notice ALIGNMENT PROCEDURE Note Set the position of REC LEVEL to MAX REC BALANCE to center TIMER MEMORY and Dolby NR to OFF and INPUT to LINE for all alignments Controls to be positioned Output Connection Adjust Adjust For HEAD AZIMUTH 2 NORMAL Test Tape MT 1 114 AZ
12. d Panel Pushing Plate J Flywheel M Flywheel Supporter Board Connector Ass y Cass Hold Back Spring Plate J Connector Ass y 7P Head Panel Pushing Plate K Hall DN838 Solenoid Arm Guide A R P Head HJ42860 Solenoid Arm RB Erase Head HF 213152 Solenoid Arm LB Motor MMX 6H2LSA Motor Holder R Pinch Roller Soft Dumper Bracket D Rew Idler A Eject Cord Bracket A Pinch Roller Arm Eject Cord AJ Bracket A Shaft Supporter G Board Bracket Cass Guide LB Supporting Plate for Bracket A Cass Guide RB Lock Bracket C Idler Arm Ass y Drive Arm Pushing Plate Action Arm Ass y Back Tension Bracket E Action Plate Ass y D Micro Switch Bracket C Chassis Ass y Rew Lever D Head Panel Ass y Pan Head Machine Screw 2 3 x 4 Sub Chassis Ass y B Pan Head Machine Screw 2 3 x 10 F F Lever Ass y A Pan Head Machine Screw 2 6 x 3 Eject Cord F 125L Pan Head Machine Screw 2 6 x 10 Solenoid XA 00027 19V X24 Pan Head Machine Screw 3 x 5 R P Head Spring B Flat Head Machine Screw 2 x 4 Pinch Roller Spring H Bind Head Screw 2 x 5 F F Action Arm Spring A Pan Head Tapping Screw 3 x 5 Rew Arm Spring A Bind Head Fine Screw 2 x 5 Brake Arm Spring RA Bind Head Fine Screw2 x 7 Brake Arm Spring LA Screw W Spring Washer 2 x 4 Action Plate Spring F Screw W Spring Washer 2 6 x 4 Drive Arm Spring A Screw W Spring Washer 2 6 x 5 Action Lever Spring A Screw W Spring Washer 2 6 x 8 Action Lever Spring C Screw W Spring Washer 2
13. k2 B 89 10k2 B 8 V R601 V R602 SV R601 602 SV R684 SVR401 402 SVR631 632 683 SVR681 682 2 50k2 B 8 Carbon Trimmer SWITCHES Slide Switch Lever Switch Lever Switch Lever Switch ESD 81541 SW4235012 SW4435013 SW4635021 S1 ESL 2428 Lever Switch LSA 1139 Leaf Switch HKWO141 01 010 Function Button Unit Ass y ESB 7097 AC ON OFF Switch S13 BIAS OSC UNIT 53T 004A Bias OSC Unit OSB681 FILTER 12A 1120 Filter 19kHz FIL801 802 2 COILS amp TRANSFORMERS Power Transformer 04355 162005 Output Transformer T401 402 1 8mH MC 125R Variable Inductor L631 632 1 2mH RC 875 Inductor L633 634 om saw EX CONNECTORS amp TERMINALS HL J 0249 01 02 Headphone Jack HLJ 0264 01 03 Mic Jack CS728 1 2 DIN Socket N41572 4 Pin Jack MCO3 021 Micro Connector AsS y 3 Hole MCO6 014 Micro Connector Ass y 6 Hole MCO7 015 Micro Connector Ass y 7 Hole MCO7 016 Micro Connector Ass y 7 Hole 09 017 Ass y 9 Hole 171825 3 Micro Plug 3 Pin 171825 6 Micro Plug 6 Pin 171825 7 Micro Plug 7 Pin 171825 9 Micro Plug 9 Pin 5830 4 Strain Relief Line Cord PC 002 Audio Cable ACC 010 Line Cord 1 SOLENOID FUSES METERS amp LAMPS FU 5
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