Sony MDRIF-630-R Service manual
MDR-IF630R
SERVICE MANUAL
Ver 1.0 2000. 12
MDR-IF630R is the component model block one in the MDR-IF630RK.
COMPONENT MODEL NAME FOR MDR-IF630RK
Headphones MDR-IF630R
Transmitter TMR-IF630R
SPECIFICATIONS
US Model
AEP Model
UK Model
E Model
Tourist Model
Headphones
Type Closed, dynamic
Driver unit 30 mm dia. with neodymium
Frequency response
Power source DC 2.4 V: Built-in rechargeable
Mass Approx. 310 g (10.9 oz)
Built-in rechargeable batteries
Model name NH-AAC
Type Ni-MH
Voltage 1.2 V
Capacity 1000 mAh
Design and specifications are subject to change without
notice.
magnet
12 – 24,000 Hz
batteries
HEADPHONES
SECTION 1
GENERAL
Check the remaining power of the
headphone batteries
Pull up the suspender, and check that the
headphones’ power indicator lights in red. You
can now use the headphones.
Charge the batteries or install new batteries, if the
power indicator light is weak or turned off and
the sound become distorted or has a lot of noise.
POWER
3 Adjust the volume.
This section is extracted
from instruction manual.
High
Low
Audio mode switch
Depress the audio mode switch (VOICE mode) to
emphasize the human voice. Press to release it
(NORMAL mode) for normal tone quality.
Audio mode switch
NORMAL VOICE
Flexible Circuit Board Repairing
• Keep the temperature of 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.
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.
— 2 —
SECTION 2
DISASSEMBLY
• The equipment can be removed using the following procedure.
Set
Driver (R side) RX BASE board
Driver (L side) RX CHR board
Lid (R), holder Hanger (R) RX SW board, Holder (R)
Lid (L), holder
Note : Follow the disassembly procedure in the numerical order given.
2-1. DRIVER (R SIDE)
Driver (R side)
3
Plate (R) assy, front
Hanger (L) Holder (L)
Precaution for installation
Driver (R side)
Solder the each lead wires
directly to the position as
shown while being
cautions of colors
4
Remove the two solderings
2-2. RX BASE BOARD
4
Knob, volume
3
Button, sound selection
RX BASE board
2
Four screws
(+P2
Red
×
6)
1
Pad, ear
Precaution for installation
Solder the each lead wires directly to the position as
shown while being cautions of colors
RX BASE board
Head band (rear) (natural)
Head band (rear) (red)
Head band (front) (natural)
Natural
From RX BASE board
from RX SW board (–) (natural)
from RX SW board (+) (black)
2
Remove the ten solderings
1
Two screws (+P2 × 6)
Driver (red)
Head band (front) (natural)
Head band (front) (black)
— 3 —
Head band (front) (green)
Driver (natural)
2-3. LID (R), HOLDER
r
5
6
Claw
Lid (R), holder
4
1
3
Two screws (+P2
1
2
Housing (R) assy
×
6)
2-4. HANGER (R)
Precaution for installation
Solder the each lead wires directly to the position as
shown while being cautions of colors
Groove
Groove
From head band (rear)
Groove
From head band
(front)
From RX SW board
Groove
Groove
Groove
HANGER (R)
1
Hanger (R)
2
Lid (R) hange
— 4 —
2-5. RX SW BOARD, HOLDER (R)
3
Head band (rear)
2
Head band (front)
q;
Cushion assy, head
Two screws (+P2 × 2.5)
1
2-6. DRIVER (L SIDE)
Precaution for installation
4
Screw (+P2 × 5)
Solder the each lead wires
directly to the position as
shown while being
cautions of colors
6
5
Chassis
Two springs
RX SW board
Natural
Holder (R)
7
8
9
Remove the two solderings
Green
From head band (rear)
Natural
Driver (L side)
1
Pad, ear
3
— 5 —
Plate (L) assy, front
2
Four screws (P2 × 6)
Driver (L side)
4
Remove the two solderings
2-7. RX CHR BOARD
y
Precaution for installation
Solder the each lead wires directly to the position as
shown while being cautions of colors
RX CHR board
Terminal (–), battery
Head band (rear) (red)
Two terminals, charge
Head band (rear) (natural)
Head band (front) (natural)
Head band (front) (black)
Terminal (+), battery
5
Terminal (–), battery
4
Two terminals, charge
6
RX CHR board
1
Two screws (+P2 × 6)
7
Screw
(+P2 × 6)
Box assy, battery
3
Terminal (+), batter
Two batteries, nickel hydrogen
2
Remobe the eight soderings
2-8. LID (L), HOLDER
1
2
Housing (L) ssy
3
Two screws
(+P2 × 6)
1
4
Lid (L), holder
6
Claw
5
— 6 —
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