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SERVICE MANUAL
Ver 1.0 2001.04
System
Carrier frequency
Channel
Modulation
Frequency response
Output level
Output impedance
Transmitter
Oscillator
Antenna
Signal processing
Maximum sound pressure level
Operating voltage
Battery life
Mic input jack
Dimensions
Mass
Receiver
Oscillator
Antenna
Signal processing
Operating voltage
Battery life
Rec. output plug
Monitor output level Approx. 2 mW at 16 ohms
Earphone jack
Mixing mic. jack
Cord length
Dimensions
Mass
Sony Corporation
9-873-047-11
2001D0500-1
Personal Audio Company
C 2001.4
Shinagawa Tec Service Manual Production Group
Transmitter
(WCS-880T)
SPECIFICATIONS
863.4 — 864.6 MHz
Ch1, Ch2, Ch3
FM
100 — 15,000 Hz
–38 dB±4 dB (0 dB = 1 V/pa, 1,000
Hz)
Approx. 1.5 kilohms
Crystal-Controlled
Built-in antenna
Compressor
More than 114 dB
SPL
1.5 V LR6 (Size AA) × 1
Approx. 20 hours
with Sony Alkaline battery
LR6 (N) × 1
3.5 mm dia. (Plug in power)
Approx. 60 × 70 × 22.5 mm (2
×
3
/
8
×
inches) (W × H × D)
7
29
2
/
/
8
32
Approx. 69 g (2.4 oz) incl. battery
SAW resonator
Built-in antenna
Expander
1.5 V LR6 (Size AA) × 1
Approx. 20 hours
with Sony Alkaline battery
LR6 (N) × 1
Monaural mini plug
3.5 mm dia. monaural
3.5 mm dia. monaural
3
Approx. 45 cm (17
/
inches)
4
Approx. 60 × 70 × 22.5 mm (2
×
3
/
8
×
inches) (W × H × D)
7
29
2
/
/
8
32
Approx. 78 g (2.8 oz) incl. battery
WCS-880
Receiver
(WCS-880R)
Supplied accessories
Electret condenser lavalier microphone (1)
Directivity
Omni-directional
Cord length
Approx. 1.0 m (39
Dynamic earphone (1)
Cord length
Approx. 0.9 m (35
Ferrite core (1)
Design and specifications are subject to change without
notice.
Battery life
Sony alkaline battery LR6 (N) (not supplied) will give
20 hour continuous operation of the transmitter and
receiver units respectively.
WIRELESS MICROPHONE SYSTEM
AEP Model
3
/
inches)
8
1
/
inches)
2
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Related Manuals for Sony WCS-880
Summary of Contents for Sony WCS-880
- Page 1 Battery life More than 114 dB 1.5 V LR6 (Size AA) × 1 Operating voltage Sony alkaline battery LR6 (N) (not supplied) will give Battery life Approx. 20 hours 20 hour continuous operation of the transmitter and with Sony Alkaline battery receiver units respectively.
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Page 2: Table Of Contents
WCS-880 TABLE OF CONTENTS Notes on chip component replacement • Never reuse a disconnected chip component. • Notice that the minus side of a tantalum capacitor may be dam- GENERAL ............aged by heat. DISASSEMBLY 2-1. TX Board, VCO Board ........... 4 2-2. -
Page 3: General
WCS-880 SECTION 1 This section is extracted from instruction manual. GENERAL Features This wireless microphone system is designed to be used with a video camera recorder, etc. By attaching Receiver unit / Récepteur / Empfänger / Ontvanger the receiver unit onto a video camera recorder, etc. -
Page 4: Disassembly
WCS-880 SECTION 2 DISASSEMBLY Note: 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) 3 case (lower) 2 two claws 2-2. -
Page 5: Rx Board, Fe Board
WCS-880 2-3. RX BOARD, FE BOARD 1 two screws (P2 × 6) 4 RX board, FE board 5 case (upper) 3 case (lower) 2 two claws 2-4. ANTENNA SETTING RX board antenna case (upper) cushion (lower), switch case (upper) rear view... -
Page 6: Electrical Adjustments
Procedure: 1. Connect a frequency counter to the TP53 on TX BASE board The WCS-880 is a wireless microphone system operating in the 800 and the foot of VCO board shield case. MHz. This system comprises the transmitter unit and the receiver unit. - Page 7 WCS-880 4. TX Output Level Adjustment 6. TX Modulation Sensitivity Adjustment Setting: Setting: AF OSC Frequency: 1 kHz spectrum analyzer Output level: –53.7 dBV TX BASE Foot of VCO board board shield case receiver – MIC jack (J1) unit more than 1 GHz...
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Page 8: Rx Section
WCS-880 Adjustment Location: RX SECTION 1. Consumption Current Check MIC jack – TX BASE BOARD – Setting: (J1) (Component Side) regulated dc power supply battery 1 t 2 t 3 SW51 terminal 3 [RF CHANNEL] – RV1 RV2 TX OSC (12.8MHz) - Page 9 WCS-880 MEMO 3. RX Output Level Adjustment Adjustment Location: Setting: – RX BASE BOARD (Component Side) – lead wire antenna (ANT2) FM RF SSG RX BASE 1 t 2 t 3 board 1/4 λ sleeve [RF CHANNEL] antenna Carrier frequency: 864.2 MHz Modulation: 1 kHz, ±...
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Page 10: Diagrams
WCS-880 SECTION 4 DIAGRAMS 4-1. BLOCK DIAGRAM – TX Section – RV1 – 3 TX MODULATION SENSITIVITY SW51 CH-3 CH-2 CH-1 PRE-EMPHASIS & COMPRESSOR CHANNEL SW51 – 1 ANT1 LEAD ANTENNA IC51 12.8MHz TX OSC OSC IN CHARGE FREQUENCY RF AMP... -
Page 11: Block Diagram - Rx Section
WCS-880 4-2. BLOCK DIAGRAM – RX Section – FILTER FILTER (REC OUT) LF52 LF51 10.7MHz POWER AMP IC1 (2/2) VREF FM DISCRI ANT2 LEAD FM FRONT-END, IF AMP, DET ANTENNA FRONT-END BLOCK DISCRIMI- IC1 (1/2) EXPANDER NATOR DEEMPHASIS FM/AM FM IF... -
Page 12: Printed Wiring Boards - Tx Section
WCS-880 4-3. PRINTED WIRING BOARDS – TX Section – TX BASE BOARD SW51 (COMPONENT SIDE) SW101 D102 CHANNEL TX BASE BOARD (CONDUCTOR SIDE) POWER BATT D102 C103 C102 R103 L101 TP53 SW51 SW101 R104 E C B IC51 C11 +... -
Page 13: Schematic Diagram - Tx Section
WCS-880 4-4. SCHEMATIC DIAGRAM – TX Section – • • See page 16 for Waveforms. See page 16 for IC Block Diagrams. Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. -
Page 14: Printed Wiring Boards - Rx Section
WCS-880 4-5. PRINTED WIRING BOARDS – RX Section – RX BASE BOARD MIX MIC SW101 D102 (COMPONENT SIDE) RX BASE BOARD CHANNEL (CONDUCTOR SIDE) POWER BATT C158 D153 R155 Q101 C156 D151 B C E D102 R153 C105 Q155 IC101... -
Page 15: Schematic Diagram - Rx Section
WCS-880 4-6. SCHEMATIC DIAGRAM – RX Section – • • See page 16 for Waveform. See page 16 for IC Block Diagrams. Note on Schematic Diagram: • Voltages and waveforms are dc with respect to ground • All capacitors are in µF unless otherwise noted. pF: µµF under no-signal conditions. - Page 16 WCS-880 • Waveforms • IC Block Diagrams – RX BASE Board – – TX BASE Board – IC51 MB15C132PFV-G-BND-ER (TX BASE Board) 1 IC101 2 (LX) 1 Q51 Emitter 2 V/DIV, 5 µs/DIV 1 V/DIV, 50 ns/DIV OSCIN REFERENCE FREQUENCY...
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Page 17: Exploded Views
WCS-880 SECTION 5 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they may have some difference from the original are seldom required for routine service. Some one. delay should be anticipated when ordering •... -
Page 18: Rx Section (Wcs-880R)
WCS-880 5-2. RX SECTION (WCS-880R) supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4540-663-A CASE (RX) SUB ASSY 8-952-251-90 HEADPHONE MDR-E122 SET 2-544-527-21 KNOB (BANDO) 4-963-644-11 CUSHION (LOWER), SWITCH 2-544-526-21 KNOB (POWER) 4-956-742-01 BUSHING, CASE... -
Page 19: Electrical Parts List
WCS-880 SECTION 6 ELECTRICAL PARTS LIST RX BASE NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service. - Page 20 WCS-880 RX BASE Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-162-997-11 CERAMIC CHIP 10PF 0.5PF < TRIMMER > 1-162-919-11 CERAMIC CHIP 22PF 1-107-686-11 TANTAL. CHIP 4.7uF 1-141-327-11 CAP, CHIP TYPE TRIMMER 10PF 1-162-910-11 CERAMIC CHIP 0.25PF 50V...
- Page 21 WCS-880 RX BASE TX BASE Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSISTOR > < VARIABLE RESISTOR > Q101 8-729-230-49 TRANSISTOR 2SC2712L-TE85L Q151 8-729-230-49 TRANSISTOR 2SC2712L-TE85L RV51 1-223-586-11 RES, ADJ, CARBON 10K Q152 8-729-050-31 FET...
- Page 22 WCS-880 TX BASE Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C108 1-164-346-11 CERAMIC CHIP 1-216-817-11 METAL CHIP 1/16W 1-216-821-11 METAL CHIP 1/16W C121 1-162-970-11 CERAMIC CHIP 0.01uF C123 1-164-160-11 CERAMIC CHIP 20PF 1-218-344-11 RES-CHIP 7.5K...
- Page 23 WCS-880 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-162-911-11 CERAMIC CHIP 0.5PF MISCELLANEOUS 1-113-713-91 CERAMIC CHIP 0.10PF 50V ************** 1-162-908-11 CERAMIC CHIP 0.25PF 50V 8-952-251-90 HEADPHONE MDR-E122 SET 1-162-910-11 CERAMIC CHIP 0.25PF 50V 1-751-137-11 CORD, MICROPHONE (1 CORE) (REC OUT) 1-162-908-11 CERAMIC CHIP 0.25PF 50V...
- Page 24 WCS-880 REVISION HISTORY 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...