Sony MDR-7505 User manual

MDR-7505
US Model
AEP Model
SERVICE MANUAL
STEREO HEADPHONES
SPECIFICATIONS
Features
•Monitoring headphones for DJ and remix use
•Swivel earcup allows easy single sided monitoring on shoulders
•40 mm driver unit for high quality sound
•Coiled OFC litz cord
•Screw type gold plated stereo unimatch plug for secure
connection
•Convenient folding design
Type : Dynamic, Closed
Driver unites : ø40 mm, dome type
Impedence : 40 Ωat 1 kHz
Sensitivety : 102 dB/mW
Power handling capacity
:1000 mW
Frequency response
:10 – 25,000 Hz
Cord : Coiled 1 – 3 m long single-sided OFC-litz cord
with a gold plated stereo unimatch plug
Mass : Approx. 225 g (wihtout cord)
Supplied accessory
:Soft case (1)
Design and specifications are subject to change without notice.
[WIRING DIAGRAM]
(RED) (RED) (BRONZE)
(BRONZE)
Marking
Marking
DRIVER
(R) DRIVER
(L)
(BRONZE)
(GREEN)
(RED)
Ver 1.1 2003. 12
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-927-155-12
2003L16-1
© 2003.12

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MDR-7505 SECTION 1
DISASSEMBLY
Note : Disassemble the unit in the order as shown below.
Note : Follow the disassembly procedure in the numerical order given.
Set Driver (L side)
Driver (R side) Cord (with plug)
Hunger (R) Hunger (L)
1-1. DRIVER (L SIDE)
1-2. CORD (WITH PLUG)
1Ear pad
2Three screws (+P2.6 ×6)
3Front assembly plate
4Rotate it in the direction of the arrow.
6Driver (headphone) (040F016)
5Remove the
five solderings
Red
Cord
(with plug)
Marking side
Driver (L side)
Green
Precaution during installation
Harness
Natural
1Remove the wiring bracket.
3Two claws
2Cord
(with plug)
A
15 mm 15 mm
1Bushing
3Housing (L)
2Housing
ring (L)
4
Precaution during installation
Hook the loop of the
cordaround the rib of
the portion A.
Fasten the cord at the specified
dimension as shown, to cut the
excessive length.

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MDR-7505
1-3. HUNGER (L)
A
9Slider cap lid (L)
C
1Two screws (+P2 ×6)
1Two screws
(+P2 ×6)
2Two screws
(+P2 ×6)
3Slider cap (L)
4
2Cushion stopper
(upper)
3Cushion stopper (lower) (L)
5
2Ginbal (L)
1Ginbal shaft
8
3Hunger (L)
7Harness
4Claw
5Slider
6
Slider holder (L side)
0 – 2 mm
B
Precaution during installation
Precaution during installation
Precaution during installation
Adjust the distance between
the slider holder and harness
to the specified distance as shown.
Route the harness into
the groove and the rib of
the portion A as shown.
Place the hunger in the direction as shown
and route the harness coming from the slider
cap lid through the hole of the portion B on the Ginbal.
Route the harness into
the groove inside the portion C.

— 4 —
MDR-7505
1-4. DRIVER (R SIDE)
1Ear pad
2Three screws
(+P2.6 ×6)
3Front assembly plate
6Driver (headphone)
(040F016)
5Remove the
two solderings
Marking side
Driver (R side)
Red
Precaution during installation
Harness
Natural
4Rotate it in the direction
of the arrow.

— 5 —
MDR-7505
1-5. HUNGER (R)
3Two screws
(+P2 ×6) Slider holder (R side)
1Two claws
Head band unit
1Two screws
(+P2 ×6)
2Two screws
(+P2 ×6)
9Slider cap lid (R)
3Slider cap (R)
6
4Cushion stopper
(upper)
0 – 2 mm
5Cushion stopper (lower) (R) 7
2
2Ginbal (R)
1Ginbal shaft
8
3Hunger (R)
7Harness
4Claw
A
BC
5Slider
6
2Housing (R)
1Housing
ring (R)
Precaution during installation
Precaution during installation
Precaution during installation
Adjust the distance between the slider
holder and harness to the specified
distance as shown.
Route the harness into the groove
and the rib of the portion A as shown.
Place the hunger in the direction as shown
and route the harness coming from the slider
cap lid through the hole of the portion B on the Ginbal.
Route the harness into the
groove inside the portion C.

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MDR-7505 SECTION 2
EXPLODED VIEW
12
11
19
21
20
16
18
9
4
2
4
2
1
5
23
23
1
10
9
8
6
7
3
13 17
14
16
22
15
#2
#2 #2
#2
not supplied
#2
#1
(including 3)
#1
#2
14-214-998-01 PAD, EAR
2X-4951-649-1 PLATE, FRONT ASSY
31-790-644-11 CORD (WITH PLUG)
41-542-388-11 DRIVER (HEADPHONE)(040F016)
54-214-989-11 HOUSING (L)
64-214-991-01 RING (L), HOUSING
7 4-218-139-01 BUSHING
84-214-987-01 HANGER (L)
94-214-986-01 SHAFT, GINBAL
10 4-214-982-02 GINBAL (L)
11 4-214-974-01 STOPPER (LOWER) (L), CUSHION
12 4-214-980-02 LID (L), SLIDER CAP
13 4-214-990-11 HOUSING (R)
14 4-217-707-01 RING (R), HOUSING
15 4-214-978-02 CAP (L), SLIDER
16 4-214-972-01 STOPPER (UPPER), CUSHION
17 4-214-988-01 HANGER (R)
18 4-214-983-02 GINBAL (R)
19 4-214-975-01 STOPPER (LOWER) (R), CUSHION
20 4-214-979-02 CAP (R), SLIDER
21 4-214-981-02 LID (R), SLIDER CAP
22 X-4952-373-1 BAND ASSY, HEAD
#1 7-685-133-19 SCREW +P 2.6 ×6 TYPE2 NON-SLIT
#2 7-685-104-19 SCREW +P 2 ×6 TYPE2 NON-SLIT
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
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.
Ver 1.1 2003.12

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MDR-7505
ACCESSORIES
************
4-954-463-01 CASE, SOFT
Part No. Description Remarks
ACCESSORIE

REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver. Date Description of Revision
1.0 1999.08 New
1.1 2003.12 Correction of Part No. for Ref No. 10,12,15,18,20 and 21 (SPM-03064)
MDR-7505