Sony MDR-RF815R Service Manual
MDR-RF815R
SERVICE MANUAL
Ver 1.0 2000. 06
MDR-RF815R is the component model block one in the MDR-RF815RK.
COMPONENT MODEL NAME FOR MDR-RF815RK
Headphones MDR-RF815R
Transmitter TMR-RF815R
AEP Model
UK Model
SPECIFICATIONS
Headphones
Power source DC 2.4 V: Built-in rechargeable
Mass Approx. 240 g (8.1 oz.) incl.
built-in rechargeable battery
Built-in Ni-Cd rechargeable battery
Model name NC-AA
Voltage 1.2 V
Capacity 700 mAh
Design and specifications are subject to change without
notice.
battery
HEADPHONES
5
-B Turn up the volume to a moderate
level with the VOL control, then
tune the headphones in to the
frequency of the transmitter with the
TUNING control until you can hear
the audio signal loud and clear.
B MDR-RF815R
TUNING
control
VOL control
SECTION 1
GENERAL
Auto power on/off function
When you remove the headphones from your
head, the power turns off automatically. Do not
allow the self adjusting band to be pulled up,
otherwise the headphones will be switched on.
This section is extracted
from instruction manual.
The power turns on.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
1. Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
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 for parts which, 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
— 2 —
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. RX-BASE BOARD
1
Four screws (P 2
× 6)
Cover (R), hanger
Claw
Precaution for installtion
1
Slide the suspender in the
direction of the arrow.
Suspender
2
Set the psuh
switch (1 key).
7
9
Switch, push (1 key)
8
Remove the two solderings.
6
5
2
Claw
RX-BASE board
4
Screw (P 2
3
Remove the
nine solderings.
× 8)
Precaution for installtion
No.205
RX-BASE board
No.204
No.201
No.201 (green)
No.202
No.203
No.203 (black)
Solder the each lead wires directly to the position as shown
while being cautions of colors.
No.204
No.202 (red)
— 3 —
Set the lead wires
Set the each lead wires as illustrated below.
B
Cover (L), hanger
Groove
No.203
No.201
To the driver (030F032//K).
Groove
No.201, No.203
Groove
Groove
No.202
Groove
To the RX-BASE board
A
Cover (R), hanger
No.205
Groove
No.204
To the driver (030F032//K).
No.201
No.203
No.202
No.201, No.203
B
Cover (L), hanger
Groove
Cover (R), hanger
A
— 4 —
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