background image

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.

• All resistors are in 

 and 

1

/

4

 

W or less unless otherwise

specified.

• % : indicates tolerance.

C

: panel designation.

• Signal path.

: MIC

SECTION 2

DIAGRAMS

2-1. SCHEMATIC DIAGRAM

ECM-R300

— 3 — — 4 —

1
2
3
4
5
6
7
8
9

10
11
12

24
23
22
21
20
19
18
17
16
15
14
13

C7

220p

C3

56p

C14
22p

C15

220p

C16

680p

C17

0.1

C10

0.0022

C9

0.022

C11

C19

0.22

C8

0.022

C4

0.22

C6

1

C5

1

Q1

SSM2000

NOISE CANCELER

C20

1

R12

10k

R6

1k

R10

47k

R1

3.9k

R9

47k

R3

22k

R2

10k

R4

300k

R7

62k

R8

390k

R5

510

R13

1M

R14

680

R15

680

C21

1

C22

1

S1-2

S2-2

S1-1

nR

ON

OFF

C26

0.022

LOW      HIGH

D6

1SS387

R16

100

D3

RB411D

3

2

1

D4

SML-310LT-T86

L1

220

µ

H

C24
220

4V

C25

33
4V

C18

0.47

6V

C23

33

10V

+6.0V

NC

NC

C13

3.3

C12

4.7

Q3-2

NJM2132

AMP

Q2-2

NJM2132

AMP

Q2-1

NJM2132

AMP

Q3-1

NJM2132

AMP

7

8

5

6

4

7

6

5

S2-1

C1

0.22

C2

0.1

HIGH

LOW

1

4

2

3

8

D5

015AZ4.7

D1

1SS352

D2

1SS352

D

S

L IN
R IN

VCF DET IN

ACOM

V+

VCF CAP

 L VCF C1

 L VCF C2

 R VCF C1

R VCF C2

VCA CAP

VCA DET IN

SUM OUT

VCA PORT

HUSH ON

Q4

XC6371A601PR

1

2

3

3

3

3

3

3

6

3

nR

ON

OFF

SENS

SENS

1.8

6

(nR)

DC/DC CONVERTOR

DRY BATTERY

SIZE "AA" 

(IEC DESIGNATION R6P)

1PC, 1.5V

MINI

PLUG

TOTAL CURRENT

0.21mA

THRES

DEFAULT

L OUT

MICROPHONE CAPSULE 

(C-1053)

3

3

3

3

3

3

6

3

3
3
3
3
6
3
3
4
3
4
0
3

3.2

3

3

3.2

0.3

AMPLIFIER BOARD

16

0.01

w w w . x i a o y u 1 6 3 . c o m

Q Q 3 7 6 3 1 5 1 5 0

9

9

2

8

9

4

2

9

8

T E L

1 3 9 4 2 2 9 6 5 1 3

9

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

Q

TEL  13942296513  QQ  376315150  892498299 

TEL  13942296513  QQ  376315150  892498299 

http://www.xiaoyu163.com

http://www.xiaoyu163.com

Содержание ECM-R300

Страница 1: ...bject 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 Flexible Circuit Board Repairing Keep the temperature of soldering iron around 270 C during repairing Do not touch the soldering iron on the same conductor of the circuit board within 3 times Be careful not to apply f...

Страница 2: ...3 2 1 D4 SML 310LT T86 L1 220µH C24 220 4V C25 33 4V C18 0 47 6V C23 33 10V 6 0V NC NC C13 3 3 C12 4 7 Q3 2 NJM2132 AMP Q2 2 NJM2132 AMP Q2 1 NJM2132 AMP Q3 1 NJM2132 AMP 7 8 5 6 4 7 6 5 S2 1 C1 0 22 C2 0 1 HIGH LOW 1 4 2 3 8 D5 015AZ4 7 D1 1SS352 D2 1SS352 D S L IN R IN VCF DET IN ACOM V VCF CAP L VCF C1 L VCF C2 R VCF C1 R VCF C2 VCA CAP VCA DET IN SUM OUT VCA PORT HUSH ON Q4 XC6371A601PR 1 2 3 ...

Страница 3: ... 01 KNOB POWER SWITCH 8 3 046 606 01 TERMINAL B BATTERY 9 3 046 605 01 TERMINAL A BATTERY 10 A 4542 628 A AMPLIFIER BOARD COMPLETE 11 3 047 438 01 RIBBON BATTERY 12 3 046 598 01 LID BATTERY CASE 13 3 046 597 01 CASE LOWER 14 3 046 603 01 KNOB SENS SWITCH 15 3 046 608 01 CUSHION 16 1 792 626 11 CORD CONNECTION 1 CORE MINI PLUG 17 3 048 183 01 SCREEN 1 7 685 104 19 SCREW P 2X6 TYPE2 NON SLIT 5 6 Sem...

Страница 4: ... TANTALUM CHIP 0 47uF 10 35V C19 1 165 128 11 CERAMIC CHIP 0 22uF 16V C20 1 115 156 11 CERAMIC CHIP 1uF 10V C21 1 164 346 11 CERAMIC CHIP 1uF 16V C22 1 164 346 11 CERAMIC CHIP 1uF 16V C23 1 113 682 11 TANTAL CHIP 33uF 20 00 10V C24 1 126 246 11 ELECT CHIP 220uF 20 4V C25 1 119 749 11 TANTAL CHIP 33uF 20 00 4V C26 1 162 995 11 CERAMIC CHIP 0 022uF 50V DIODE D1 8 719 016 74 DIODE 1SS352 D2 8 719 016...

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