Sony ECMS-930-C Service manual
ECM-S930C
SERVICE MANUAL
Ver 1.0 2001. 03
SPECIFICATIONS
General
Type Stereo (employing the X-Y stereo system),
electret condenser microphone
Microphone cord 2.2 mm dia. two core-shielded,
OFC (Oxygen-free copper) cord with the
gold-plated L-shaped stereo miniplug
Length: Approx. 30 cm (11 7/8 inches)
Dimensions Approx. 55 × 34 × 40 mm (W × H × D)
(2 1/4 × 1 3/8 × 1 5/8 inches)
(without the projecting parts)
Mass Approx. 40 g (1 lb. 4 oz.)
including battery and cord
Supplied accessories Carrying case (1)
US Model
Canadian Model
E Model
Performance
Frequency response 100 – 15,000 Hz
Directivity Unidirectional
Output impedance 2.2 kilohm ±30 %
Sensitivity Open circuit output level *1 : –43 ±4 dB (7 mV)
Power requirements Lithium battery CR2025
Maximum input sound pressure level
Dynamic range More than 84 dB
Operating temperature range
*1 0 dB=1 V/Pa, 1,000 Hz (1 Pa=10 µbar=94 dBSPL)
*2 1 % wave distortion is present at 1,000 Hz
(0 dBSPL=2 × 10-5 Pa)
Design and specifications are subject to change without
notice.
× 2 (Directive angle: 90° or 120°) (switchable)
Difference between L and R channel sensitivity:
Less than 3 dB
Continuous lasting hours: Approx. 350 hours
Plug-in power
More than 110 dBSPL
0°C to 40°C (32°F to 104°F)
*2
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
9-927-989-11
2001C0400-1
© 2001. 3
Sony Corporation
Audio Entertainment Group
General Engineering Dept.
1
ECM-S930C
SECTION 1
GENERAL
This section is extracted
from instruction manual.
A
1
2
Lithium battery CR2025 (not supplied)
Pile au lithium CR2025 (non fournie)
Pila de litio CR2025 (no suministrada)
A
B
+ side
pôle +
lado +
– side
pôle –
lado –
Installing the battery (See fig. A)
1 Open the battery compartment lid.
2 Place the CR2025 battery (not supplied) with the + side facing upward.
Be sure to place the battery with polarity positioned correctly.
Battery life
The Sony CR2025 lithium battery (not supplied) gives continuous operation on the
microphone for about 350 hours. When you turn the power on, the battery check
indicator lights momentarily. When the battery becomes weak, the indicator lights
dimly or does not light at all. In this case, replace the battery with a new one. (Sony
CR2025 lithium battery (not supplied)). To avoid battery wear or leakage, be sure to
turn the power off after using the microphone.
When the battery compartment lid comes off
1 Hold down part A with a thumb so that it does not slide.
2 Insert one of the parts of A into the projecting part B of the battery compartment
and then insert the other part while pressing toward the inside.
Removing the battery (See fig. B)
When to replace the battery
When the power is turned on, the battery check indicator lights momentarily. When
the battery become weak, the indicator remains dimly lit or does not light at all. In this
case, replace the battery with Sony CR2025 lithium battery. Use of another battery may
present a risk of fire or explosion.
Under normal conditions of use, the battery will last approximately 350 hours.
Notes on lithium batter y
• Keep the lithium battery out of the reach of children. Should the battery be
swallowed, immediately consult a doctor.
• Wipe the battery with a dry cloth to assure good contact.
• Be sure to observe the correct polarity when installing the battery.
• Do not hold the battery with metallic tweezers. Doing so can cause a short-circuit.
WARNING
Battery may explode if mistreated.
Do not recharge, disassemble or dispose of in fire.
B
D
1
1
2
2
3
4
5
Parts Identification and Uses (See fig. D)
1 Directive angle switch
Set the switch according to the sound source.
90˚: Use to pick up a relatively narrower sound source (instrumental solo,
conversation, etc.), to provide a clear stereo sound image focused on target
source.
120˚: Use to pick up a relatively wider sound source (orchestra, chorus, stage
play, etc.), to provide a natural stereo sound image with full reality.
The above are guidelines for selecting an appropriate angle. Although following
these guidelines is encouraged, you can freely select either angle according to
your own preference.
Note
If you switch the angle during recording, noise may occure.
2 Gold-plated triple-pole stereo miniplug
Connect to the MIC jack of your recording equipment (video camera, etc.)
3 Battery compartment lid
4 Power switch
ON: Select when the microphone works with the battery.
OFF: Select when the microphone works with plug-in power or when you turn it
off.
When you use a Sony video camera with plug-in power system, set the power
switch to OFF.
5 Battery check indicator
When the power is turned on, this indicator lights momentarily. When the battery
becomes weak, the indicator remains dimly lit or does not light at all. In this case,
replace the battery with a new one.
2
SECTION 2
e
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
ECM-S930C
2-1. CASE, UPPER
Note : When installing, fit the selection knob and awitch (SW1)
(center position)
4 case, upper
knob, selection
3 claw
2
lid, battery cas
1 B 1.7
2-2. AMP BOARD
Note : When installing, fit the power knob and awitch (SW2)
grille
2
3 Removal the solder.
knob, power
1
4 AMP board
grille
2
2-3. HOLDER ASSY, SHOE
1 P 2.6x4
2 case, lower
3 holder assy, shoe
3
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