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WCS-880

REVISION HISTORY

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Ver.

Date

Description of Revision

1.0

2001.04

New

Summary of Contents for WCS-880

Page 1: ...n antenna Signal processing Expander Operating voltage 1 5 V LR6 Size AA 1 Battery life Approx 20 hours with Sony Alkaline battery LR6 N 1 Rec output plug Monaural mini plug Monitor output level Approx 2 mW at 16 ohms Earphone jack 3 5 mm dia monaural Mixing mic jack 3 5 mm dia monaural Cord length Approx 45 cm 17 3 4 inches Dimensions Approx 60 70 22 5 mm 2 3 8 2 7 8 29 32 inches W H D Mass Appro...

Page 2: ... 10 4 2 Block Diagram RX Section 11 4 3 Printed Wiring Boards TX Section 12 4 4 Schematic Diagram TX Section 13 4 5 Printed Wiring Boards RX Section 14 4 6 Schematic Diagram RX Section 15 5 EXPLODED VIEWS 5 1 TX Section WCS 880T 17 5 2 RX Section WCS 880R 18 6 ELECTRICAL PARTS LIST 19 Notes on chip component replacement Never reuse a disconnected chip component Notice that the minus side of a tant...

Page 3: ...designed to be used with a video camera recorder etc By attaching the receiver unit onto a video camera recorder etc you can receive the sound picked up by the transmitter unit You can enjoy vivid sound which matches the zoomed up images recorded by your video camera recorder You can also use this system with a tape recorder as a conventional wireless microphone system to record the sound The oper...

Page 4: ...te Follow the disassembly procedure in the numerical order given 2 1 TX BOARD VCO BOARD 1 two screws P2 6 4 TX board VCO board 5 case upper 2 two claws 3 case lower TX board case upper antenna case upper rear view cushion lower switch cushion lower switch ...

Page 5: ...5 WCS 880 2 3 RX BOARD FE BOARD 2 4 ANTENNA SETTING 5 case upper 2 two claws 3 case lower 1 two screws P2 6 4 RX board FE board antenna case upper case upper rear view RX board cushion lower switch ...

Page 6: ...nfirm that the value of frequency counter satisfy specified value 6 Change the RF CHANNEL switch SW51 to 3 7 Confirm that the value of frequency counter satisfy specified value Specified values CH 1 863 33 MHz to 863 47 MHz CH 2 864 13 MHz to 864 27 MHz CH 3 864 53 MHz to 864 67 MHz Note Tool 1 4 λ sleeve antenna Production procedure 1 Cut about 80 mm of the outer cover at the other end of an appr...

Page 7: ...sfy specified value 6 Set the RF CHANNEL switch SW51 to 2 7 Confirm that the value of digital voltmeter satisfy specified value Specified values CH 2 1 4 V to 0 1 V CH 1 1 1 V to 0 1 V CH 3 1 6 V to 0 1 V 6 TX Modulation Sensitivity Adjustment Setting Procedure 1 Connect an AF OSC to the MIC jack J1 on the TX BASE board transmitter unit 2 Connect a 3 3 kΩ load to the REC OUT plug receiver unit and...

Page 8: ...the value of digi tal voltmeter becomes 1 4 V 10 Confirm that the waveform of oscilloscope is sine wave 11 Change the carrier frequency of SSG to 864 6 MHz 12 Change the RF CHANNEL switch SW1 to 3 13 Adjust CT3 on the RX BASE board so that the value of digi tal voltmeter becomes 1 4 V 14 Confirm that the waveform of oscilloscope is sine wave Adjustment Location RX BASE Board See page 9 regulated d...

Page 9: ...of audio analyzer 4 Set the output of audio analyzer to 1 kHz 36 to 40 dBV and enter its output to the MIC of Transmitter WCS 880T 5 Rotating the RV51 on RX BASE board adjust so as to mini mize the distortion Target distortion is 1 5 or less FM RF SSG Carrier frequency 864 2 MHz Modulation 1 kHz 19 kHz deviation Output level 60 dBm audio analyzer REC out plug P1 RX BASE board lead wire antenna ANT...

Page 10: ...V3 CH 3 RV2 CH 2 RV1 3 TX MODULATION SENSITIVITY J1 MIC LPF MULTIVIBRATOR FOR MUTING Q121 123 SWITCHING Q122 X1 970MHz IN MOD OUT VCO VOLTAGE CT1 RV51 ANT1 LEAD ANTENNA TX OUTPUT LEVEL ERROR AMP V OUT 2 LX OUTPUT CIRCUIT OSC VREF DC DC CONVERTER IC101 PWM CONTROL B L101 ON OFF SW101 POWER LINE FILTER LF101 DRY BATTERY SIZE AA IEC DESIGNATION R6 1PCS 1 5V 3 D101 LED DRIVE Q101 D102 BATT SIGNAL PATH...

Page 11: ...1 409MHz 1 2 3 POWER SW101 BATT D102 ON OFF DRY BATTERY SIZE AA IEC DESIGNATION R6 1PCS 1 5V SIGNAL METER BUFFER Q151 L1 RF L2 OSC REG 1 25V VREF FM AM FE OUT FM RF IN FM IF IN FM DISCRI DET OUT MUTING Q154 P1 REC OUT VREF VOL AF IN AF OUT METER AFC AGC AFC AGC REG OUT AFC FM OSC FM RF 9 7 6 8 19 21 22 12 17 14 2 23 4 24 27 LIMITER D151 D154 DC DC CONVERTER IC101 VOUT LX OSC OUTPUT CIRCUIT PWM CON...

Page 12: ...D1 A K C2 R1 R9 R2 C16 C15 C22 C23 VCO BOARD CONDUCTORT SIDE RF CHANNEL SW51 1 2 3 J1 MIC SW101 POWER OFF ON D102 BATT 1 681 323 11 11 9 10 11 11 1 681 323 DRY BATTERY SIZE AA IEC DESIGNATION R6 1PC 1 5V ANT1 LEAD ANTENNA C53 C52 C51 SHIELD CASE 11 11 1 681 324 SHIELD CASE 1 681 324 11 11 C71 C4 TP53 CP52 CP54 TP58 D1 C 9 1 D1 F 6 2 D101 B 6 D102 A 5 D121 C 8 IC1 C 10 IC51 B 3 IC101 B 6 Ref No Loc...

Page 13: ...ise specified C panel designation A B Line H adjustment for repair Power voltage is dc 1 5 V and fed with regulated dc power supply from battery terminal Voltages and waveforms are dc with respect to ground under no signal conditions Voltages are taken with aVOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms are taken with a oscilloscope Voltag...

Page 14: ...1 A K L4 FS1 C103 IC101 Q101 B C E C105 R103 R104 D101 1 3 2 K K A A RX BASE BOARD CONDUCTOR SIDE 1 A B C D E F 2 3 4 5 6 7 8 A K A K MIX MIC v RF CHANNEL SW1 1 2 3 SW101 POWER OFF ON D102 BATT 1 681 325 11 11 DRY BATTERY SIZE AA IEC DESIGNATION R6 1PC 1 5V ANT2 LEAD ANTENNA P1 REC OUT C53 C51 SHIELD CASE C52 C52 11 11 1 681 326 SHIELD CASE 1 681 326 11 11 PC7 PRINT COIL 9 10 1 681 325 11 11 TP51 ...

Page 15: ...esignation A B Line H adjustment for repair Power voltage is dc 1 5V and fed with regulated dc power supply from battery terminal Voltages and waveforms are dc with respect to ground under no signal conditions no mark without the signal receive the signal Voltages are taken with aVOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms are taken with...

Page 16: ...ER AMP AM IF AMP DET AGC 1 2 3 4 FIN GND DO VCC OSCIN LD 8 7 6 FOUT 5 DIV SWALLOW COUNTER A CONTROL CIRCUIT PRESCALER P MC COMPARATOR FREQUENCY DIVIDER REFERENCE FREQUENCY DIVIDER PHASE COMPARATOR OUTPUT SELECTOR CIRCUIT fr fp CHARGE PUMP DIGITAL LOCK DETECTOR REFERENCE COUNTER R CRYSTAL INPUT BUFFER DATA SET CIRCUIT MAIN COUNTER N 3 5 Vp p 10 3 µs 1 2 Vp p 80 ns 2 Vp p 80 ns 3 5 Vp p 10 3 µs RX B...

Page 17: ...r Ref No Part No Description Remark Ref No Part No Description Remark 1 A 4540 661 A CASE TX SUB ASSY 2 2 544 527 21 KNOB BANDO 3 2 544 526 21 KNOB POWER 4 A 4542 700 A TX BASE BOARD COMPLETE 5 2 545 828 01 TERMINAL BATTERY 6 2 545 827 01 TERMINAL BATTERY 7 2 544 532 11 CLIP LOWER 8 4 958 149 01 SPRING CLIP 9 2 544 531 11 CLIP UPPER 10 3 895 517 11 SCREW 2 TAPPING STEP 13 2 545 825 11 LID BATTERY ...

Page 18: ...STEP 63 2 545 825 11 LID BATTERY CASE 64 2 544 524 21 CASE LOWER 65 8 952 251 90 HEADPHONE MDR E122 SET 66 4 963 644 11 CUSHION LOWER SWITCH 67 4 956 742 01 BUSHING CASE 68 3 229 649 01 SHEET 880 ELECTROSTATIC 69 3 229 770 01 SHEET UPPER SHIELD 70 2 544 523 21 RECEIVER CASE UPPER 71 A 4542 703 A FE BOARD COMPLETE 72 3 229 771 01 SHEET LOWER SHIELD 73 1 500 699 11 CORE FERRITE ESD SR S10 1 7 626 31...

Page 19: ... and X mean standardized parts so they may have some difference from the original one RESISTORS All resistors are in ohms METAL Metal film resistor METAL OXIDE Metal oxide film resistor F nonflammable Items marked are not stocked since they are seldom required for routine service Some delay should be anticipated when order ing these items SEMICONDUCTORS In each case u µ for example uA µA uPA µPA u...

Page 20: ... 115 156 11 CERAMIC CHIP 1uF 10V C101 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C102 1 113 642 11 TANTAL CHIP 47uF 20 10V C103 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C104 1 113 642 11 TANTAL CHIP 47uF 20 10V C105 1 115 156 11 CERAMIC CHIP 1uF 10V C151 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C152 1 162 969 11 CERAMIC CHIP 0 0068uF 10 25V C153 1 164 227 11 CERAMIC CHIP 0 022uF 10 25V C154 1 126 607 ...

Page 21: ...M 5 1 16W R156 1 218 331 11 RES CHIP 51K 5 1 16W R158 1 216 833 11 METAL CHIP 10K 5 1 16W R159 1 218 484 11 RES CHIP 750 5 1 16W R161 1 216 845 11 METAL CHIP 100K 5 1 16W VARIABLE RESISTOR RV51 1 223 586 11 RES ADJ CARBON 10K RV52 1 223 586 11 RES ADJ CARBON 10K SWITCH S1 1 692 034 11 SWITCH SLIDE RF CHANNEL S101 1 572 018 11 SWITCH SLIDE POWER A 4542 700 A TX BASE BOARD COMPLETE CAPACITOR C1 1 16...

Page 22: ... 16W R6 1 218 344 11 RES CHIP 7 5K 5 1 16W R7 1 216 847 11 METAL CHIP 150K 5 1 16W R8 1 216 833 11 METAL CHIP 10K 5 1 16W R51 1 216 833 11 METAL CHIP 10K 5 1 16W R53 1 216 853 11 METAL CHIP 470K 5 1 16W R54 1 216 820 11 METAL CHIP 820 5 1 16W R55 1 216 820 11 METAL CHIP 820 5 1 16W R56 1 216 803 11 METAL CHIP 33 5 1 16W R57 1 216 833 11 METAL CHIP 10K 5 1 16W R58 1 216 815 11 METAL CHIP 330 5 1 16...

Page 23: ...F DIODE D1 8 719 821 53 DIODE 1SV245 TPH4 COIL L1 1 414 660 11 INDUCTOR 4 7nH L2 1 414 663 21 INDUCTOR 8 2nH L3 1 414 663 21 INDUCTOR 8 2nH L4 1 414 664 21 INDUCTOR 10nH L5 1 414 664 21 INDUCTOR 10nH TRANSISTOR Q1 8 729 043 92 TRANSISTOR 2SC5084 0 TE85L Q2 8 729 043 92 TRANSISTOR 2SC5084 0 TE85L Q3 8 729 043 92 TRANSISTOR 2SC5084 0 TE85L RESISTOR R1 1 216 837 11 METAL CHIP 22K 5 1 16W R2 1 216 819...

Page 24: ...TORY Clicking the version allows you to jump to the revised page Also clicking the version at the upper right on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 2001 04 New ...

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