Sony ECM-737-C Service manual

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Page 1

ECM-Z37C

SERVICE MANUAL

Ver 1.0 2001. 01

Ver 1.0 2001. 02

SPECIFICATIONS

General

Type Electret condenser microphone Microphone cord 1.5 mm dia. single core-shielded, OFC (Oxygen-free copper)

Dimensions Approx. 46 × 122 × 36.5 mm (W × H × D)

Mass Approx. 44 g (1 lb 6 oz) including battery and cord Supplied accessories Wind screen (1)

Performance

Frequency response 100 - 10,000 Hz Output impedance 2.2 kilohm ± 30 % Sensitivity Open circuit output level* Power requirements Lithium battery CR2025

Maximum input sound pressure level*

Dynamic range More than 79 dB Operating temperature range

0 dB = 1 v/Pa, 1,000 Hz (1 Pa = 10 µbar = 94 dBSPL)

4 % wave distortion is present at 1,000 Hz (0 dB

SPL = 2 × 10

cord with the gold-plated L-shaped miniplug Length: Approx. 30 cm (11

× 4

/16

Extension arm (1) Carrying case (1)

Continuous lasting hours: Approx. 300 hours Plug-in power

More than 105 dBSPL

0°C to 40°C (32°F to 104°F)

-5

Pa)

× 1

/16

inches)

inches) (without the projecting parts)

: – 41 ± 3.5 dB (8.9 mV)

US Model

Canadian Model

AEP Model

E Model

9-927-983-11

Design and specifications are subject to change without notice.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

ELECTRET CONDENSER MICROPHONE

Sony Corporation

Audio Entertainment Group General Engineering Dept.

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ECM-Z37C

SECTION 1

GENERAL

This section is extracted from instruction manual.

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SECTION 2

OFF

6 grille assy, front

0 case, lower

8 B 1.7 x 7

4 P 1.4 x 2.5

7 lid battery case

9 case, upper

2 PTPWH 2 x 4

1 cap, switch

3 knob, switch

5 cap, rear

claws

knob, switch cap, switch

Section view

Note for installing the “cap, switch” : Fit the claws.

claws

Push and remove.

Section view

Spread and remove.

lid battery case

Note for installing the “knob, switch” : Position the switch knob with the AMP board switch (SW1) as shown below.

DISASSEMBLY

Note : Follow the disassembly procedure in the numerical order given.

2-1. CASE, UPPER

ECM-Z37C

2-2. MICROPHONE UNIT, AMP BOARD

1 microphone unit

5 Unsolder the

lead wires.

3 P 1.4 x 2.5

2 Unsolder the

4 AMP board

lead wires.

Note for installing the microphone unit: Arrange the lead wires not to be put on the LED on the AMP board.

microphone unit

Note: Pay attention to drop of the compression

spring and stainless hall when removing the AMP board.

Note for installing the AMP board: Push the AMP board switch (SW1) down to position the board with the switch knob.

switch (SW1)

LED

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ECM-Z37C

3-1. SCHEMATIC DIAGRAM

SECTION 3 DIAGRAMS

2.4

Note:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/4 W or less unless otherwise specified.

• % : indicates tolerance.

• C : panel designation.

• A : B+ Line.

• Power voltage is dc 3V and fed with regulated dc power supply from battery terminal.

• Voltage is dc with respect to ground under no-signal conditions.

• Signal path. F : MIC

2.9

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3-2. PRINTED WIRING BOARD

RED

BLK

D4 ON

SW1

(POWER)

OFF

-1 -2

BLU

MINI PLUG

(MIC OUT)

FET1

MIC1

MIC UNIT

(CHASSIS)

TO TOP GRILLE

1-679-162-

(11)

LITHIUM

BATTERY

CR-2025

AMP BOARD (COMPONENT SIDE)

2345678

ECM-Z37C

Note:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

•

• : Pattern from the side which enables seeing.

• : Pattern of the rear side.

: Through hole.

• Semiconductor Location

Ref. No. Location D1 C-6

D2 C-6 D3 A-7 D4 B-7

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ECM-Z37C

NOTE:

• The mechanical parts with no reference number in the exploded views are not supplied.

• Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.

SECTION 4

EXPLODED VIEWS

• Color Indication of Appearance Parts Example :

KNOB, BALANCE (WHITE) ... (RED)

Parts Color Cabinet’s Color

• Accessories and packing materials are given in the last of this parts list.

4-1. MAIN SECTION

26 14

Ref. No. Part No. Description Remark * 1 1-679-162-11 AMP BOARD

2 3-686-420-01 SCREW (P1.4X2.5), TAPPING 3 3-222-905-01 CAP, SWITCH 4 3-222-904-01 KNOB, SWITCH 5 3-222-910-01 SPRING, SWITCH

6 3-222-903-01 CAP, REAR 7 3-222-901-01 LID, BATTERY CASE 8 3-222-907-01 HINGE 9 3-222-899-01 CASE, UPPER 10 3-222-909-01 GRILLE, TOP

11 3-222-913-01 SCREEN, TOP

* 12 3-387-142-01 CUSHION (BUTTON)

13 1-418-258-11 MICROPHONE UNIT (including MIC1 and FET1) 14 X-3379-570-1 GRILLE ASSY, FRONT 15 3-222-912-01 SCREEN, FRONT

Ref. No. Part No. Description Remark

17 1-757-041-11 CORD, MICROPHONE 18 3-307-259-11 SPACER (2.6X3.5) 19 3-222-911-01 BRACKET, SHOE 20 X-3379-656-1 HOLDER ASSY, SHOE 21 3-318-203-81 SCREW (B1.7X7), TAPPING

22 3-222-915-01 CUSHION (A) 23 3-302-492-00 SPRING, COMPRESSION 24 3-222-906-01 WINDOW, LED 25 1-550-104-11 HOLDER, BATTERY 26 3-222-914-01 SCREEN, BOTTOM

27 3-313-392-01 SCREW (2X4), + PTPWH 28 7-671-112-11 BALL, STAINLESS (DIA.2.5) 29 7-682-902-11 SCREW +PWH 2.6X5 30 7-627-454-08 SCREW, PRECISION +K 2.6X3.5 31 3-223-917-01 CUSHION (B)

16 3-222-900-01 CASE, LOWER

R9 1-249-385-11 CARBON 2.2 5% 1/4W

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4-2. ARM SECTION

ECM-Z37C

not supplied

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

51 A-4540-573-A ARM ASSY (EXTENSION ARM) 52 2-509-712-21 SCREW 53 7-621-284-20 SCREW +P 2.6X6

54 2-545-662-01 O RING (P20) 55 A-4521-030-A HOLDER ASSY, SHOE

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ECM-Z37C

SECTION 5

AMP

NOTE:

• Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set.

• -XX 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

Ref. No. Part No. Description Remark

* 1-679-162-11 AMP BOARD

***********

1-550-104-11 HOLDER, BATTERY

< CAPACITOR >

ELECTRICAL PARTS LIST

• CAPACITORS uF : µF

• COILS uH : µH

• Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.

• SEMICONDUCTORS In each case, u : µ, for example: uA.. : µA.. uPA.. : µPA.. uPB.. : µPB.. uPC..: µPC.. uPD.. : µPD..

C1 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V C2 1-110-563-11 CERAMIC CHIP 0.068uF 10% 16V C3 1-110-563-11 CERAMIC CHIP 0.068uF 10% 16V C4 1-125-839-11 TANTAL. CHIP 47uF 20% 6.3V C5 1-125-839-11 TANTAL. CHIP 47uF 20% 6.3V

C6 1-127-760-11 CERAMIC CHIP 4.7uF 10% 6.3V

< DIODE >

D1 8-719-976-96 DIODE DTZ4.7C D2 8-719-049-09 DIODE 1SS367-T3SONY D3 8-719-072-95 DIODE 015AZ3.9-X-TPL3 D4 8-719-052-72 LED CL-220HR-C (ON)

< RESISTOR >

R1 1-216-827-11 METAL CHIP 3.3K 5% 1/16W R2 1-216-833-11 METAL CHIP 10K 5% 1/16W R3 1-216-827-11 METAL CHIP 3.3K 5% 1/16W R4 1-216-813-11 METAL CHIP 220 5% 1/16W R5 1-216-833-11 METAL CHIP 10K 5% 1/16W

< SWITCH >

SW1 1-786-043-21 SWITCH, SLIDE (POWER)

*************************************************************

MISCELLANEOUS

***************

13 1-418-258-11 MICROPHONE UNIT (including MIC1 and FET1) 17 1-757-041-11 CORD, MICROPHONE R9 1-249-385-11 CARBON 2.2 5% 1/4W

*************************************************************

ACCESSORIES & PACKING MATERIALS

********************************

3-222-848-01 SCREEN, WINDOW 3-229-587-11 MANUAL, INSTRUCTION (ENGLISH,FRENCH,

SPANISH)

3-229-587-21 MANUAL, INSTRUCTION (GERMAN,ITALIAN,

PORTUGUESE) (AEP)

3-926-629-02 PORCH, CARRYING

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ECM-Z37C

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ECM-Z37C

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

1.0 2001. 02 New