Sony ECM-737-C Service manual
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
1
*
0 dB = 1 v/Pa, 1,000 Hz (1 Pa = 10 µbar = 94 dBSPL)
2
*
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
13
7
(1
× 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)
/8
× 1
2
7
/16
7
inches)
/8
inches) (without the projecting parts)
1
: – 41 ± 3.5 dB (8.9 mV)
US Model
Canadian Model
AEP Model
E Model
9-927-983-11
2001B0400-1
© 2001. 2
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.
1
ECM-Z37C
SECTION 1
GENERAL
This section is extracted
from instruction manual.
2
SECTION 2
ON
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
claws
knob, switch cap, switch
Section view
Note for installing the “cap, switch” :
Fit the claws.
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
3
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