Sony ECM-959 User manual

ECM-959/959V
SERVICE MANUAL
E Model
UK Model
AEP Model
ECM-959/959V
US Model
Canadian Model
ECM-959
(ECM-959)
SPECIFICATION
General Frequency Response
Type One-point stereo (employing the Mid-Side system), electret
condenser microphone (with back-electret condenser capsules)
Output plug (ECM-959) -+e---+ Stereo miniplug Front
(ECM-959V) «+ Phone plug X 2 : .
Cord length (ECM-959) +--+: Approx. 2m(6feet 7inches) eens i, ae Raxis
(ECM-959V)_ «+ Approx. 40cm(15% inches)
Battery R6 (size AA) battery
Dimensions 30 X175mm(outside diameter x length) (13% x 7inches) 5 A
Weight (ECM-959) + Approx. 2069(7.3 0z) incl. battery ea a i
(ECM-959V) +--+ Approx. 250g (8.8 oz) incl. battery R (180°) = L (180°)
Supplied accessories
Case (1)
(ECM-959) «+--+ Microphone stand/grip (1)
Plug adaptors (unimatch plug) (1 set)
Microphone stand screw adaptor SAD-35 (1), SDA-34 (1)
(ECM-959V) «s+ Microphone mounting adaptor (1)
Performance
Frequency response 50 - 18,000 Hz
Directivity Directive angle: 90° or 120°
Output impedance §50 2+ 20% unbalanced
Output tevel Open circuit voltage: -48+3 dB (0 dB = 1 V/Pa)
(at 1,000 Hz, directive Effective output level: -51.4+3 dBm (0 dBm = 1mW/Pa)
angle 120°) Difference between L and R output level: Less than 3 dB
Power requirements
Noise level
Wind screen (1)
Microphone holder (with PF'4 screw) (1)
Sony battery SUM-3 (NS) (1)
Recommended load impedance: More than 3 kilohms
Normal operating voltage: 1.5 V
Minimum operating voltage: Approx. 1.1 V
Battery life: Approx. 2,500 hours with Sony battery SUM-3 (NS)
Signal-to-noise ratio: More than 69 dB (1.000 Hz, 1 Pa)
Inherent noise: Less than 25 dB SPL (0 dB SPL =2x 10°5 Pa =
2x 10-4 ubar)
Wind noise +’: Less than 45dB SPL, using wind screen
Induction noise from external magnetic field *’ Less than 10dB
SPL (ECM-959)/Less then —4dB SPL (ECM-959V)
Maximum sound pressure level More than 117 dB SPL (at 1.000 Hz. 1% distortion)
Dynamic range More than 92 dB
Operating temperature range 0°C to 60°C (32°F to 140°F)
Storage temperature range ~20°C to 60°C (~4°F to 140°F)
*' Wind noise is the value measured by applying a wind velocity of 2 misec. (6.6 ft/sec.) from all directions to the
microphone. The mean value is taken and converted to the equivalent input sound level.
*’ The external magnetic field induction noise is measured with the microphone placed in an alternating magnetic
field of 50 Hz. 1 10°” tesla (1 milligauss). The maximum noise value is taken and converted to the equivalent
input sound level.
Response in dB
|
a
t
20 «50 100 200 500 1k 2k 5k 10k 20k
Frequency in Hz
Directivity Characteristics
L-channel directional axis R-channel directional axis
ELECTRET CONDENSER
STEREO MICROPHONE
SONY.

ECM-959/959V |
CONNECTION AND PARTS IDENTIFICATION
ECM-959
Phone plug Miniplug
[1] Wind screen
Reduces wind or breath noises.
[2] Battery check indicator
When the power/directive angle switch is
moved from OFF to 90°, this indicator will
light momentarily, if the battery is in good
condition.
[3] Powerldirective angle switch
OFF: To turn off the power
90°: To pick up the source more clearly
than the sound around the source
(e.g. to pick up a strings quartet or
jazz trio, or bird and insect noises)
120°: To pick up a sound weil distributed
to the left and right (e.g. to pick up
an orchestra, chorus, moving steam
locomotive, motor race)
[4] Microphone holder
Attach to the supplied microphone
stand/grip or to the optional microphone
stand,
OFF 90° 120° ON
e eo~- e——
°
[5] Lock screw
Adjust the angle of the microphone and
tighten this screw.
[6] Microphone stand/grip
Use to stand the microphone on a desk,
or use as a grip of the hand microphone.
Plug adaptors
Use to connect the microphone to R
(right) and L (left) microhpone jacks of
stereo equipment. Connect the red plug
to R jack, and the white plug to Ljack.
When the microphone jacks are
minijacks, pull to remove the phone plugs.
Stereo miniplug
Connect to the microphone jack of a
stereo cassette-corder, etc.

ECM-959V
(3 | OFF 90° 120° ON
e o— « ——
°
When mounting on the video camera recorder
Tighten the accessory
shoe lock screw.
BATTERY INSTALLATION
When to replace the battery
When the power/directive angle switch is moved from OFF to
90°, the battery check indicator will light momentarily. When the
battery becomes weak, the indicator will light dimly or will not
light at all. In this case, replace the battery with new one.
For battery life, see Specifications.
Notes on battery
¢ Install the battery with correct polarity.
¢ If the microphone is not to be used for a long time, remove the
battery to avoid unit damage caused by battery leakage and
corrosion.
ECM-959/959V
Wind screen
Reduces wind or breath noises.
[2] Battery check indicator
[3] Powerldirective angle switch
OFF: To turn off the power
90°: To pick up the source more clearly
than the sound around the source
(e.g. to pick up a strings quartet or
jazz trio, or bird and insect noises)
120°: To pick up a sound well distributed
to the left and right (e.g. to pick up
an orchestra, chorus, moving steam
locomotive, motor race)
[4] Microphone holder
Attach to the supplied microphone
mounting adaptor.
[5] Microphone holder lock screw
Adjust the angle of the microphone and
tighten this screw.
[6] Microphone mounting adaptor
Use to mount the microphone on the
accessory shoe of a video camera
recorder,
Accessory shoe lock screw
Phone plugs
Connect to the microphone jacks of a
video camera recorder, etc.
Connect the red plug to R jack, and the
white plug to L jack.

ECM-959/959V |
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
(1) grill assy : 0-9
(2) microphone capsule : @-O
(3) swith board : 0-9, 8-@
(4) transformer board : @-®©, O-O, ®
@ switch ring
a
@+RK2x4 © switch knob
@ remove the grip.
S
: @+RK2x4
@ grill assy.
@+P1.7x2.5
9) ® transformer board
+K2x4
!
| @bottom plate
@O+K2x4
@+K2x5
@switch board
' @+K2x5
QO+K2x4
@+K2x4

<=
| ECM-959/959V ECM-959/959V |
1
2
3
4
5
6
7
8
(BOTTM PLATE) ® 2)
BATTERY TERMINAL
MOUNTING DIAGRAM GROUND PLATE
BATTERY SPRING
IMPEDANCE CONVERTER
Q2 “Saere serpeennene rosea hp
aS
BOARD i [ TRANSFORMER BLK
2 ; BOARD
y (BOTTM PLATE)
We 20°
® i
OWA
Sy
=f}
ig ©
SCHEMATIC
DIAGRAM
O@
SWITCH BOARD] TRANSFORMER [ECM-959 Oo 1
rT
BOARD
!
2SK377-J
:
|
I
BATT 1.5V
R6(SIZE AA)
SUM~3(NS)
SR6EISC
(BATTERY CHECK)
R6
+ 10k
C5
33/6.3V
_ 2SK377-
IMPEDANCE CONVERTER
EE 0 EE EE = TEA
—5H—
9 10 11
y=
| (L)
Ee ee SO er aa ee
CLEAR _ECM-959V
SHIELD PLATE
ae
| O)
| |
be
Note:
12 13 14 15
SEMICONDUCTOR LEAD LAYOUT
2SK377-J SR615C
short
S cathode
D anode’ long
@ o——-: parts extracted from the component side.
@ @——: parts extracted from the conductor side.
S|
| OFF > 90° + 120° |
Note:
@
All
capacitors
are
in
uF
unless
otherwise
noted.
pF:
wig
SOWV
‘or
less
are
not
indicated
except
for
electrolytics
and tantalums.
e All resistors are in Q and '/,W or less unless otherwise
specified.

| ECM-959/959V
EXPLODED VIEW AND PARTS LIST
NOTE:
@ The mechanical parts with no reference
number in the exploded views are not
supplied.
e items marked ‘’*’’ are not stocked since
they are seldom required for routine 24 24
service. Some delay should be antici- 9 (ECM-959V)
pated when ordering these items. 9 (ECM-959)
No. Part No. Description No. Part No. Description
1 2-513-914-00 RING, SWITCH 13 2-529-964~01 CUSHION
2 *2-529-951-02 FRAME (RELAY) 14 2-529-965-01 CUSHION
3 2-529-952~11 (ECM-959)....GRIP 15 7-627-651-08 SCREW, PRECISION +RK 2X4, TYPE 1
2-529-952-21 (ECM~959V)...GRIP 16 * 2-539-605-01 PLATE, GROUND
4 2~529-954-11 (ECM-959)....KNOB (SWITCH) 17 3-325-414-01 SPRING
2-529-954-01 (ECM-959V)...KNOB (SWITCH)
18 7-622-205-05 NUT M2 TYPE 2
5 2-529-958-01 COVER, LED 19 7-623-505-01 LUG,2
6 2-529-979-01 (ECM-959)....RING, MODEL NAME 20 7-627-552-08 SCREW, PRECISION +P 1.7X2.5, TYPE 1
2-529-989-01 (ECM-959V)...RING, MODEL NAME 21 2-523-713-01 TERMINAL
7 7-627-452-28 SCREW, PRECISION +K 2X4, TYPE 1 22 = * 2-532-219-01 TERMINAL, GROUND
8 7-627-452-38 SCREW, PRECISION +K 2X5, TYPE 1
23 X~2529-904-1 (ECM-959)....GRILLE ASSY
9 1-558~631~-21 (ECM-959)....CORD, MIC (DIA. 3.9) X-2529-945-1 (ECM-959V)...GRILLE ASSY
1-559-478-21 (ECM-959V)...CORD, MIC (FLAT TYPE) 24 2-529-980-01 (ECM-959).... BUSHING
10 2-520-113-00 BOARD, TERMINAL, POSITIVE 2-529-956-01 (ECM-959V)...BUSHING
11 2-529-957-01 HOLDER, CAPSULE
12 2-529-963-01 CUSHION 901 *1-623-793-11 PC BOARD, SWITCH
902 * 1~623~794-11 PC BOARD, TRANSFORMER
MIC1 8-814-177-01 MICROPHONE CU17-—02-A
MIC2 8-814-178-01 MICROPHONE CU17—-03-A

ECM-959/959V_ |
ELECTRICAL PARTS LIST
NOTE:
@
Items
marked
“‘*"
are
not
stocked
since
they
are
seldom
required
for
routine
service.
delay
should
be
anticipated
when
ordering
these
items.
ELECTRICAL PARTS
Ref.No Part No.
901 *1-623~-793-11
902 #*1-623-794-11
C1 1-102-106-00
C2 1-102~106-00
C3 1-124-255-00
Cy 1-124-255~00
C5 1-124~229-00
C6 1-124-255-00
D1 8-719-123~70
MIC1 8+814-177-01
MIC2 8=814-178-01
Q1 8-729-824-18
Q2. = 8-729-824-18
Ri 1-249-416-11
R2 1-249-416-11
R3 1-249-426-11
RY 1-249-422—11
R5 1-249~422—11
R6 1-249-429~11
Si 1-553-414~00
qT 1-427-508-00
T2 1-427-508-00
9-977-035-13
Description
PC BOARD, SWITCH
PC BOARD, TRANSFORMER
CERAMIC 100PF
CERAMIC 100PF
ELECT IMF
ELECT 1MF
ELECT 33MF
ELECT 1MF
SR615C
10%
10%
20
20%
20%
20%
Some
% 50V
MICROPHONE CU17-02-A
MICROPHONE CU17-03-A
2SK377-J3
25K377-J3
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
820
820
5.6K
2.7K
2.7K
10K ©
SWITCH, SLIDE
TRANSFORMER,
TRANSFORMER,
1/4W
1/4W
1/4W
1/4W
1/4W
1/4W
OUTPUT (MIC)
OUTPUT (MIC)
@ CAPACITORS:
MF: wF,PF: uwuF.
e RESISTORS
All resistors are in ohms.
F: nonflammable
ACCESSORY & PACKING MATERIAL
Part No.
X-2529-902-1
X-2529-903-1
X+2529-946-1
X-2529-947—1
1~558-6 30-11
#2-529-995-01
#2-529-996~01
#2-539-901-01
#2-539-902-01
2-599-379-11
3~786-014~21
2-100-951-04
2-100-952-00
Sony Corporation
General Audio Group
—38—
Description
HOLDER ASSY, MICROPHONE
SCREEN ASSY, WINDOW
(ECM-959V)... ADAPTOR ASSY
(ECM-959)....GRIP ASSY, MICROPHONE STAND
(ECM-959)....ADAPTOR, PLUG
(ECM-959V)... INDIVIDUAL CARTON
(ECM~959V)...CASE, ORNAMENTAL
(ECM-959)....INDIVIDUAL CARTON
(ECM~959)....CASE, ORNAMENTAL
(ECM-959)....MANUAL, INSTRUCTION
(ECM-959V)...MANUAL, INSTRUCTION
(ECM-959).... ADAPTER, SCREW,
STAND(SAD-34)
(ECM-959).... ADAPTER, SCREW,
STAND(SAD-35)
English
92D0429-1
Printed in Japan
© 1992. 4
Published by Customer Relations and Service Group