Sony MDR-7509 Service Manual
MDR-7509
(RED)
(RED)
(BRONZE)
(BRONZE)
Marking
Marking
DRIVER
(R)
DRIVER
(L)
(BRONZE)
(GREEN)
(RED)
SERVICE MANUAL
Ver 1.0 1999. 08
SPECIFICATIONS
Type : Dynamic, Closed
Driver unites : ø50 mm, dome type
Impedence : 24 Ω at 1 kHz
Sensitivety : 107 dB/mW
Power handling capacity
: 3000 mW
Frequency response
: 5 – 30,000 Hz
Cord : Coiled 1 – 3 m long single-sided OFC-litz cord
with a gold plated stereo unimatch plug
Mass : Approx. 300 g (wihtout cord)
Supplied accessory
: Carrying case (1)
US Model
AEP Model
[WIRING DIAGRAM]
Design and specifications are subject to change without notice.
Features
• Monitoring headphones for DJ and remix use
• Swivel earcup allows easy single sided monitoring on shoulders
• 50 mm driver unit for high quality sound
• Coiled OFC litz cord
• Screw type gold plated stereo unimatch plug for secure
connection
• Convenient folding design
ACCESSORIES
Ref. No. Part No. Description Remarks
ACCESSORIES & PACKING MATERIALS
******************************
4-954-463-01 CASE, SOFT
MICROFILM
STEREO HEADPHONES
EXPLODED VIEW
NOTE:
• -XX, -X mean standardized parts, so they may
have some differences from the original one.
• The mechanical parts with no reference number
in the exploded views are not supplied.
11
#1
12
14
#3
10
13
not supplied
#2
8
22
20
18
#5
#2
#5
#4
#6
not supplied
17
21
#5
16
15
7
6
5
3
(including 19)
19
2
4
9
#7
1
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
1 4-954-041-21 PAD(L),EAR
1 4-954-042-21 PAD(R),EAR
2 4-954-044-01 URETHAN,FRONT
3 4-954-037-01 REGISTER, FRONT
4 4-954-038-01 REGISTER, SIDE
5 4-954-023-01 PLATE(L), FRONT
5 4-954-024-01 PLATE(R), FRONT
6 4-954-018-01 EQUALIZER (A)
7 1-505-137-11 DRIVER (050F020)
8 4-954-009-01 STOPPER, DRIVER
9 4-954-039-01 SPRING, HANGER
10 4-954-010-11 FLANGE (L)
10 4-954-011-11 FLANGE (R)
11 4-954-013-01 BUSHING
* 12 3-671-893-00 CLAMP (LOW TYPE)
15 4-954-017-01 CAM,HANGER
16 X-4943-118-1 HANGER (L) ASSY
16 X-4943-119-1 HANGER (R) ASSY
* 17 2-266-942-00 SPRING, COMPRESSION
18 A-4540-590-A BAND ASSY, HEAD
19 1-696-608-11 CORD(WITH PLUG)
20 1-558-092-01 WIRE, SHIELD (1 CORE)
21 4-954-025-01 LID (FRONT) (L), ROTOR
21 4-954-029-01 LID (FRONT) (R), ROTOR
22 4-954-014-01 LID (REAR) (L), ROTOR
22 4-954-021-01 LID (REAR) (R), ROTOR
#1 7-621-255-40 SCREW +P 2 × 6
#2 7-621-255-65 SCREW +P 2 × 10
#3 7-622-205-05 NUT M2 TYPE 2
#4 7-671-112-11 BALL, STAINLESS (2.5 DIA)
13 4-954-026-01 CAP(L), HOUSING
13 4-954-027-01 CAP(R), HOUSING
14 4-954-277-21 CAP(L), ORANAMENTAL
14 4-954-278-21 CAP(R), ORANAMENTAL
9-927-156-11
#5 7-685-102-19 SCREW +P 2 × 4 NON-SLIT TYPE 2
#6 7-685-103-19 SCREW +P 2 × 5 TYPE 2 NON-SLIT
#7 7-685-132-19 SCREW +P 2.6 × 5 TYPE 2 NON-SLIT
Sony Corporation
Personal Audio Company
— 2 —
Printed in Japan ©1999.8
99H1657-1
Published by General Engineering Dept.
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