Sony ECM-TS125 User manual

ECM-TS125
AEP Model SERVICE MANUAL
ELECTRET CONDENSER MICROPHONE
MICROFILM
SPECIFICATIONS
SECTION 1
GENERAL This section is extracted
from instruction manual.
— 2 —
1. Check theareaofyourrepairforunsolderedor poorly-soldered
connections. Checkthe entire board surface for soldersplashes
and bridges.
2. Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
4. Look forpartswhich, through functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
5. Check the B+ voltage to see it is at the values specified.
6. Flexible Circuit Board Repairing
• Keep the temperature of the 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 force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
Type Electret condenser microphone
Dimensions Microphone parts:
11 ×26 mm (diameter/length)(7/16 ×11/16 in.)
Battery box parts:
40 ×16.5 ×46 mm (w/h/d)
(15/8×21/32 ×113/16 in.)
Mass Microphone parts (including cord):
Approx. 15 g (0.53 oz.)
Battery box parts
(including lithium battery and cord):
Approx. 17 g (0.6 oz.)
Cord Microphone parts:
∅2.2 mm (3/32 in.)OFC litz cord (2 core shielded)
Length: approx. 1 m (393/8in.)
Battery box parts:
∅2.2 mm (3/32 in.)OFC litz cord (2 core shielded)
Length: approx. 0.3 m (117/8in.)
Supplied accessories
Battery box (1)
Holder clip (1)
Frequently response
100 – 16,000 Hz
Directivity Unidirectional ×2
Output impedance
3 kΩ±30%
Sensitivity Open circuit output voltage level -42 ±4dB
0 dB=1V/Pa, 1,000 Hz(1Pa=10µ bar=94 dBSPL)
Battery life Approx. 100 hours
(with Sony lithium battery CR2025(not supplied))
Maximum sound pressure input level
Approx. 110 dBSPL
1% wave distortion at 1,000 Hz
(0 dBSPL=2 ×10-5Pa)
Operating temperature range
0°C – 40°C (32°F – 104°F)
Design and specifications are subject to change without notice.
1POWER switch
2Battery check indicator
When you turn the power on, the battery check indicator lights up
momentarily. This is normal. The light tells you that the battery still
has life. When the battery becomes weak, the indicator lights
dimly or does not light at all.
3L-shaped stereo miniplug (gold plated)
4Battery box
You can clip the battery box to your tie, lapel or pocket.
5Microphone jack
6L-shaped stereo miniplug (gold plated)
7Battery compartment
8Microphone
9Holder clip
AInterlock the projection of the holder to the groove on the
microphone.
BThis microphone holder allows you to tilt the microphone 45°
backward or forward.
Ver 1.0 1999. 05

SECTION 2
DIAGRAMS
2-1. SCHEMATIC DIAGRAM
TOTAL CURRENT
MIC UNIT
CONNECT : 700uA
DISCONNECT : 460uA
LITHIUM BATTERY
(L CH)
(R CH)
2
R22
3.9K
R21
2.2M
R23
3K
C22
0.01
F
Q2
2SC4116YG
MIC AMP
R24
3K
C24
1
F
R12
2.2M
R13
3K
C12
0.01
F
C14
2.3
0.5
1.0
2.3
0.5
1.0
1
F
3.9K
R11
Q1
2SC4116YG
MIC AMP
L
R
R14
3K
2.9
MIC UNIT
2-2. PRINTEDWIRING BOARD
AMP BOARD (SIDE B)
UNIT BOARD
(SIDE B)
UNIT BOARD
(SIDE A)
AMP BOARD (SIDE A)
1-672-000-
11
(11)
1-672-000-
11
(11)
J1
MIC IN
S1
POWER
D3
R13 R12
D1
C14
C1 C2
R1
D2
C22
R24
R22
R3
D7
R14
R11
R21
R23
C12
C24
Q2
Q1
ON
OFF
S1
(MIC OUT) MINI
PLUG
LITHIUM
BATTERY
CR-2025
3V
BATTERY
CHECK
LAMP
16
1-673-682-
11
(11)
LR
D10
D20
MIC1
(L CH)
MINI PLUG
(MIC OUT)
MIC2
(R CH)
1-673-682-
11
(11)
D6
MIC UNIT
12
A
B
C
D
E
F
G
H
34567
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 Ωand 1/4W or less unless otherwise
specified.
• % : indicates tolerance.
•C: panel designation.
•U: B+ Line.
• Power voltage is dc 3 V and fed with regulated dc power
supply from battery terminal.
Note on Printed Wiring Board:
•X: parts extracted from the component side.
•®: Through hole.
•b: Pattern of the rear side.
Caution:
Pattern face side: Partson the pattern facesideseen from
(Conductor B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component A) the parts face are indicated.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM(Inputimpedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F: MIC
Ref. No. Location
D1 F-2
D2 F-3
D3 D-2
D6 H-3
D7 G-3
D10 B-3
D20 B-4
Q1 E-3
Q2 D-3
• Semiconductor
Location
— 3 — — 4 —
ECM-TS125

— 5 — — 6 —
SECTION 3
EXPLODED VIEW
NOTE:
• -XX, -X mean standardized parts, so they may
have some differences from the original one.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delayshould beanticipated whenordering these
items.
• Themechanical parts with no reference number
in the exploded views are not supplied.
• Accessories and packing materials is given in
the last of this parts list.
3-1. BATTERY BOX SECTION
3-2. MAIN SECTION
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
1
2
6
7
8
9
10
11
12
4
5
#1
51
53
53
54
54
not supplied
55
52
1 1-790-506-21 CORD,MICROPHONE (2 CORE)
2 2-545-592-01 BUSHING
4 X-2542-165-1 CASE(UPPER) ASSY, BATTERY
5 2-545-588-01 KNOB,SWITCH (POWER)
*6 A-4542-575-A AMP BOARD, COMPLETE
7 2-545-589-01 TERMINAL, PLUS
51 A-4540-182-A CLIP ASSY, HOLDER
52 X-2542-079-1 CLIP ASSY
53 3-704-197-12 SCREW (M1.4 ×2.0), LOCKING
54 3-309-597-31 SCREW (1.4), TAPPING,PRECISION
55 A-4540-570-A MICROPHONE ASSY, LAVALIER (MIC UNIT)
8 2-545-590-01 TERMINAL, MINUS
9 2-545-599-01 SHEET, BLIND
10 2-545-586-01 CASE(LOWER), BATTERY
11 2-545-587-01 HOLDER, BATTERY
12 2-545-668-01 LABEL, MODEL NUMBER
#1 7-685-103-19 SCREW +P 2 ×5 TYPE2 NON-SLIT

SECTION 4
ELECTRICAL PARTS LEST
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts
specifiedin the diagrams or the components
used on the set.
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• Itemsmarked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
• CAPACITORS:
uF: µF
• RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
• COILS
uH: µH
• SEMICONDUCTORS
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...
When indicating parts by reference number,
please include the board name.
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
*A-4542-575-A AMP BOARD, COMPLETE
********************
< CAPACITOR >
C1 1-119-749-11 TANTAL. CHIP 33uF 20% 4V
C2 1-104-908-11 TANTAL. CHIP 47uF 20% 4V
C12 1-162-974-11 CERAMIC CHIP 0.01uF 50V
C14 1-164-346-11 CERAMIC CHIP 1uF 16V
C22 1-162-974-11 CERAMIC CHIP 0.01uF 50V
C24 1-164-346-11 CERAMIC CHIP 1uF 16V
< DIODE >
D1 8-719-072-95 DIODE 015AZ3.9-X-TPL3
D2 8-719-064-07 LEDSML-310LTT86 (BATTERY CHECK UNIT)
D3 8-719-056-29 DIODE 015AZ4.7-TPL3
D6 8-719-056-29 DIODE 015AZ4.7-TPL3
D7 8-719-056-29 DIODE 015AZ4.7-TPL3
< JACK >
J1 1-764-624-51 JACK(MIC IN)
< TRANSISTOR >
Q1 8-729-230-63 TRANSISTOR 2SC4116-YG
Q2 8-729-230-63 TRANSISTOR 2SC4116-YG
< RESISTOR >
R1 1-216-833-91 RES,CHIP 10K 5% 1/16W
R3 1-216-813-11 METAL CHIP 220 5% 1/16W
R11 1-218-706-11 METAL CHIP 3.9K 0.50% 1/16W
R12 1-216-861-11 METAL CHIP 2.2M 5% 1/16W
R13 1-218-703-11 METAL CHIP 3K 0.50% 1/16W
R14 1-218-703-11 METAL CHIP 3K 0.50% 1/16W
R21 1-218-706-11 METAL CHIP 3.9K 0.50% 1/16W
R22 1-216-861-11 METAL CHIP 2.2M 5% 1/16W
R23 1-218-703-11 METAL CHIP 3K 0.50% 1/16W
R24 1-218-703-11 METAL CHIP 3K 0.50% 1/16W
< SWITCH >
S1 1-692-397-21 SWITCH, SLIDE (POWER)
************************************************************
MISCELLANEOUS
*************
1 1-790-506-21 CORD, MICROPHONE (2 CORE)
************************************************************
ACCESSORIES & PACKING MATERIALS
*******************************
3-866-282-11 MANUAL, INSTRUCTION (ENGLISH)
A-4540-182-A CLIP ASSY, HOLDER
AMP
— 7 — — 8 —
ECM-TS125
Sony Corporation
Personal Audio Company 99E1639-1
Printed in Japan ©1999.5
Published by General Engineering Dept.
9-926-940-11