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MICROFILM

SERVICE MANUAL

RADIO CASSETTE PLAYER

Canadian Model

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WM-FX673

E Model

WM-FX673/FX877

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WM-FX877

SPECIFICATIONS

WM-FX673/FX877

Photo: WM-FX673

Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol

are trade-

marks of Dolby Laboratories Licensing Corporation.

Model Name Using Similar Mechanism

WM-EX670/EX672

Tape Transport Mechanism Type

MT-WMEX672-162

Ver 1.0 1999. 03

Содержание WM-FX673

Страница 1: ...del WM FX877 SPECIFICATIONS WM FX673 FX877 Photo WM FX673 Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation DOLBY and the double D symbol a are trade marks of Dolby Laboratories Licensing Corporation Model Name Using Similar Mechanism WM EX670 EX672 Tape Transport Mechanism Type MT WMEX672 162 Ver 1 0 1999 03 ...

Страница 2: ...g or unsoldering Notes on chip component replacement Never reuse a disconnected chip component Notice that the minus side of a tantalum capacitor may be dam aged by heat ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT NE REMPLACER CES COM POSANTS QUE ...

Страница 3: ...egulated power supply switch is set to OFF once and then set to ON Move the DI RECTION switch S1 according to this timing and set to the center position 3 FF REW modes 1 Check that the preset state is set 2 Input the square wave or sine wave to the Q15 1 COLLEC TOR and the TP23 GND 3 Press the RADIO OFF button S3 to set the STOP mode 4 Press the FF AMS button S4 or the REW AMS button S5 4 PLAY mod...

Страница 4: ... side T motor pulley idler gear A side T gear FR FF left side insert flywheel N insert flywheel R reverse pulley clutch assy F idler gear B gear Y cam gear gear REEL side T gear REEL side S motor pulley idler gear A side T idler gear A side S gear NR FWD left side REV right side insert flywheel N insert flywheel R reverse pulley clutch assy F gear Y cam gear gear REEL side S motor pulley idler gea...

Страница 5: ... 5 SECTION 2 GENERAL This section is extracted from instruction manual FX673 FX877 FX673 FX877 ...

Страница 6: ... 6 FX673 FX877 FX673 FX877 FX673 FX877 ...

Страница 7: ...shown below Set Case Block Assy Main Board Holder F Assy Pinch Lever N R Assy Head Magnetic HP901 Belt F2 Motor Capstan Reel M601 Ornament Block Assy Reel Lid Block Assy Cassette 1 Open the lid battery case 3 lid battery case 2 claw 4 screw M1 4 2 5 4 two screws M1 4 2 5 5 Remove the case block assy in the direction of the arrow 4 two screws M1 4 2 5 ...

Страница 8: ... board 3 Remove two solders of plunger solenoid 2 Remove four solders of leaf switch S1 5 two screws 4 Remove four solders of motor slider Note On installation MAIN board adjust the S1 and slider 3 belt 2 terminal board T3 1 Remove the solder of terminal board ...

Страница 9: ... 9 MOTOR CAPSTAN REEL M601 LID BLOCK ASSY CASSETTE 2 motor capstan reel M601 1 two screws M1 4 2 two screws M1 4 2 1 screw M1 4 2 5 lid block assy cassette 3 Open the cassette lid 4 shaft ...

Страница 10: ... claw 4 claw 4 claw 2 claw 1 claw 3 boss 5 ormanent block assy reel 8 flexible board 9 Remove the holder F assy in the direction of the arrow 1 two screws M1 4 1 4 3 lever B lock 2 shaft 7 bracket cassette assy 5 lever S lock 4 screw M1 4 6 shaft ...

Страница 11: ...MAGNETIC PLAY BACK HP901 1 claw 2 Remove the pinch lever R assy in the dereciton of the arrow 4 Remove the pinch lever N assy in the direction of the arrow 3 claw 1 claw 2 Remove the magnetic head HP901 in the direction of the arrow ...

Страница 12: ... 02 oz inch REV 16 25 g cm CQ 102RC 0 23 0 34 oz inch REV 0 5 1 5 g cm Back Tension 0 007 0 02 oz inch FF REW CQ 201B more than 50 g cm more than 0 7 oz inch Tape Speed Adjustment Setting Function TAPE Procedure 1 Playback WS 48A tape center in the FWD state 2 Adjsut RV601 so that the frequency counter reading becomes 3 000 Hz Specification Values 2 970 to 3 030 Hz 3 Playback WS 48A tape center in...

Страница 13: ...Connect the frequency counter to pin of IC2 as shown the figure below 2 Tune the set to 98 MHz 3 Adjust RV1 for 19 kHz reading on the frequency counter Specification 18 95 kHz to 19 05 kHz Adjustment Location 0 001 µF FM RF SSG Carrier frequency 98 MHz Modulation no modulation Output level 0 1 V 100 dB TP FM IN digital voltmeter MAIN board TP2 VT IC2 pin 1 µF frequency counter 33 kΩ MAIN Board Sid...

Страница 14: ...3 3 SIGNAL PATH PLAYBACK TUNER FM AM R CH Same as L CH MOTOR DRIVE CIRCUIT SWITCH LOGIC CIRCUIT BIAS REFERENCE VOLTAGE OSC CIRCUIT REVIVE GROOVE SWITCHING Q303 COMPARATOR IC5 DC DC CONVERTER T801 Q801 DC DC CONVERTER IC801 POWER CONTROL Q802 803 DRY BATTERY SIZE AA IEC DESIGNATION R6 1PC 1 5V BATTERY CASE RECHARGEABLE BATTERY NI CD NC 6WM 1 2V BATT B 1 5V DDC B 2 5V A D REF B 2 5 3 A D REF B X2 75...

Страница 15: ......

Страница 16: ...WM FX673 FX877 23 24 25 26 6 4 SCHEMATIC DIAGRAM See page 27 for Waveform See page 28 for IC Block Diagrams ...

Страница 17: ...t used open 26 F R CTL REC O Not used open 27 PRE CTL O Preamp on off control signal output to the TA2123AF IC301 L tape play H radio on 28 MUTE CTL O Power on mute control signal output to the TA2123AF IC301 L mute on 29 F R CTL PLAY O Forward reverse selection signal output to the TA2123AF IC301 L reverse direction H forward direction 30 BAND FM AM O Power on off control signal output of the FM ...

Страница 18: ...power on FM or AM on H power off tape on 63 TEST I Test input terminal Normally fixed at L 64 IF IN I Intermediate frequency detect signal input from the TA2022AFN IC2 65 LOCAL DX O Local DX select signal output terminal L DX H local 66 DO O PLL error signal output terminal 67 WAKE UP I Input of acknowledge signal for the key entry Acknowledge signal is input to accept function in the power off st...

Страница 19: ...BOARD T3 7 3 029 210 01 TERMINAL BOARD MINUS 8 3 309 595 11 SHEET INSULATING PACK FX877 CH JE 9 X 3377 281 1 TERMINAL BOARD ASSY BATTERY 10 3 031 460 01 SHEET BT 11 3 366 892 11 SCREW M1 4X1 4 12 3 029 217 01 LEVER B LOCK 13 3 328 483 11 SHEET 14 3 029 205 01 COVER MD FX877 JE 14 3 029 205 11 COVER MD FX673 AEP UK FR EE 14 3 029 205 21 COVER MD FX673 CND E EA HK AUS FX877 CH 15 3 366 892 01 SCREW ...

Страница 20: ...R B 63 X 3376 813 1 CLUTCH ASSY F 64 3 932 724 21 WASHER 65 3 386 694 01 WASHER 66 3 029 306 01 FLYWHEEL N INSERT FX877 66 3 029 306 11 FLYWHEEL N INSERT FX673 67 3 029 280 01 BELT F2 68 3 029 287 01 SPRING TG TORSION 69 3 029 268 01 FLYWHEEL R INSERT FX877 69 3 029 268 11 FLYWHEEL R INSERT FX673 70 3 007 428 01 WASHER R 71 3 029 283 01 GEAR IDLER A 72 3 029 286 01 GEAR NR 73 3 029 765 01 SCREW M1...

Страница 21: ...IC CHIP 0 1uF 16V C48 1 115 156 11 CERAMIC CHIP 1uF 10V C49 1 162 917 11 CERAMIC CHIP 15PF 5 50V C50 1 162 917 11 CERAMIC CHIP 15PF 5 50V C51 1 125 984 21 TANTAL CHIP 22uF 20 4V C52 1 162 910 11 CERAMIC CHIP 5PF 0 25PF 50V C53 1 162 915 11 CERAMIC CHIP 10PF 0 5PF 50V C54 1 115 156 11 CERAMIC CHIP 1uF 10V C55 1 164 676 11 CERAMIC CHIP 2200PF 5 16V C56 1 162 910 11 CERAMIC CHIP 5PF 0 25PF 50V C57 1 ...

Страница 22: ...V C809 1 127 808 91 TANTAL CHIP 10uF 20 6 3V C810 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C811 1 115 156 11 CERAMIC CHIP 1uF 10V C812 1 125 984 21 TANTAL CHIP 22uF 20 4V C813 1 115 156 11 CERAMIC CHIP 1uF 10V CB301 1 127 678 21 CERAMIC CHIP 330PF 0 50V FILTER CF1 1 767 362 11 FILTER CERAMIC 10 7MHz CF2 1 767 480 11 FILTER CERAMIC AM 450kHz DIODE D1 8 719 053 30 DIODE MA357 E TX SO D2 8 719 053 30 ...

Страница 23: ... 16W R15 1 216 833 11 RES CHIP 10K 5 1 16W R16 1 216 853 11 METAL CHIP 470K 5 1 16W R17 1 216 821 11 METAL CHIP 1K 5 1 16W R18 1 216 849 11 METAL CHIP 220K 5 1 16W R19 1 216 829 11 METAL CHIP 4 7K 5 1 16W R20 1 216 821 11 METAL CHIP 1K 5 1 16W R21 1 216 829 11 METAL CHIP 4 7K 5 1 16W R22 1 216 845 11 METAL CHIP 100K 5 1 16W R23 1 216 821 11 METAL CHIP 1K 5 1 16W R24 1 216 821 11 METAL CHIP 1K 5 1 ...

Страница 24: ...11 METAL CHIP 22K 5 1 16W R602 1 216 809 11 METAL CHIP 100 5 1 16W R603 1 216 829 11 METAL CHIP 4 7K 5 1 16W R604 1 216 823 11 METAL CHIP 1 5K 5 1 16W R605 1 216 833 11 RES CHIP 10K 5 1 16W R607 1 216 845 11 METAL CHIP 100K 5 1 16W R801 1 216 849 11 METAL CHIP 220K 5 1 16W R802 1 216 829 11 METAL CHIP 4 7K 5 1 16W R803 1 216 817 11 METAL CHIP 470 5 1 16W R804 1 216 805 11 METAL CHIP 47 5 1 16W R80...

Страница 25: ... FX673 AEP EE 3 864 890 31 MANUAL INSTRUCTION GERMAN ITALIAN FX673 AEP 3 864 890 41 MANUAL INSTRUCTION DUTCH SWEDISH FX673 AEP 3 864 890 51 MANUAL INSTRUCTION FINNISH FX673 AEP 3 864 890 61 MANUAL INSTRUCTION POLISH RUSSIAN FX673 EE 3 864 890 71 MANUAL INSTRUCTION ENGLISH CHINESE FX673 E HK 3 864 890 81 MANUAL INSTRUCTION ARABIC CHINESE FX673 EA CH 3 866 189 11 MANUAL INSTRUCTION ENGLISH KOREAN FX...

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