Sony MDR-IF610 User manual

MDR-IF610
SERVICE
MANUAL
15
Modulation system
Carrier frequency
Effective range
Frequency response
Distortion
Power source
Mass
Canadian Model
UK Model
AEP Model
E Model
Tourist Model
SPECIFICATIONS
Frequency
modulation
Supplied
accessories
Right
2.8
MHz
AC
power
adaptor
(1)
Left
2.3
MHz
Up
to
approx.
9
m
(29
ft.)
(When
useing with the TMR-IF33)
18 — 22,000 Hz
Less than 1% at 1 kHz
Built-in
Ni-Cd
rechargeable
battery
Design
and
specification
are
subject
to
change
without
Approx.
360
g
notice,
CORDLESS STEREO HEADPHONES
SONY.

TABLE OF CONTENTS SERVICING NOTE
Section Title . Page Notes on chip component replacement
@ Never reuse a disconnected chip component.
SPE CIICAMONS. Cee tietis fee Saar ers He Ms ey ee | e@ Notice that the minus side of a tantalum capacitor may
be damaged by heat.
1. GENERAL. os es-scoiseeeeitiaesa ees g
2. DISASSEMBLY 0054s eres secure re iees 3
3. ELECTRICAL ADJUSTMENT .:.:--------:: 8
4. DIAGRAMS
4-l,. Printed Wiring Boards. 08s 1 sees sae ss eases 10
4-2. Schematic Diagram ee 13
5. EXPLODED VIEWS --eeecccc cee e tees 15
6. ELECTRICAL PARTS LIST :---:::---::: i
SECTION 1 This section is extracted from
GENERAL
instruction
manual.
Parts Identification
[1] Infrared sensors
[2] Suspender
[3] Head band
Ear pads
Left (L) housing
[5] Charging indicator
[6] Quick charge switch
DC IN 9V jack
Right (R) housing
Left
(L)
housing
:
Right
(R)
housing
VOL
control
Cété
gauche
(L)
du
casque
- f
Cété
droit
(R)
du
casque
Adjusts
the
volume
level
of
the
left
and
right
channels
Auricular
izquierdo
(L)
N
1,
Auricular
derecho
(R)
simultaneously.
[9] POWER switch/indicator
The indicator lights up when the headphones turns on.
fii BALANCE control
AVLS selector

SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
FRONT PANEL, HOUSING, MAIN BOARD
— R-CH —
Note:
Register
and
speaker
are
adhered.
@
Remove
each
connector
@ housing (R)
® frange (R)
front panel (R)
@ PTP2.6 x 14
© ear pad
= [CH= @ Remove each connector.
® housing (L)
a ® frange (L)
" @ PTP2.6X 14
© ear pad

HEAD CUSHION
head cushion
® head cushion
ribbon
Leh
a! bl
if)
fv
RAY CATCHER WINDOW, PD BOARD
— L-CH —
Note: The installation location of ray catcher window (F) eng
ray catcher window (R) on R-ch is opposite.
PD board
spacer
@ hanger (L), rid

HANGER
Note:
Drum
and
ribbon
are
welded.
©
PTP2x4
by holder
-@ head band
hanger (R), rid
NOTE ON ASSEMBLING
CONNECTOR CLASSIFICATION
nada pana PD-4 board
(GK
S>
UL»
es
Ors < (WHITE)
(WHITE) PD-3 board WS
(RED)
(BLUE)

DRUM
Note: Ribbon should be coiled to be incorporated as shown
below.
holder
PTP2 x 4
cellulose
with adhesive tape.
|
07, as
@ N EN Coil the drum with
Oy ’ \ the ribbon to tape
hanger (R), rid
RAY CATCHER WINDOW
— L-CH —
Note: The installation location of ray catcher window (F) and
ray catcher window (R) on R-CH is opposite.
R @F FRONT SIDE
ray catcher window (F)
spacer
REAR SIDE
PD board
spacer

LEAD WIRE ARRANGEMENT
— L-CH -
PD-2 board
AN
MAIN L board Ss
JACK board
PD-4 board:
— R-CH —
PD-3 board
Tape with spacer (A)
EIN
ne » \ CN22
4A \ AN
AN NR
|
\
NY
CN18 LY
VOL board

SECTION 3 __
ELECTRICAL ADJUSTMENT
Note: Procedure:
1. On adjusting, use the transmitter (TMR-IF33) as a jig. 1. Connect a distortion meter to TP44, 45 (Lch) or TP53, 54 (Reh).
2. L-ch adjustment should be completed before performing R-ch 2. Turn on the power switch (S1).
adjustment. 3. Adjust with LV35 (L-ch) or LV36 (R-ch) to minimize the reading on
0dB=0.775
V
;
distorsion
meter.
[Tuning Adjustment]
Preparation:
AF OSC
input plug
1kHz 225mV( — 10.7dB)
1. Feed’a signal to jig (TMR-IF33) and connect a power supply.
2. Volume control: Optional position.
Apply DC 2.4 V between TP41 and TP42.
w
e Connection and Adjustment Location
(MAIN R BOARD]
distortion meter
de power supply

SECTION 4
DIAGRAMS
e IC Block Diagrams
ICi,2 BU2305BF IC30, 31 MC3361BD
INPUT
Pad
~
x=
23 bit
COUNTOR
4
a
e Semiconductor Lead Layouts
MC3361BD MC34119-ML XN4501
(TOP view)
{TOF vig w)
MA77
MA729 PP601-1 11E2
F Cc
=" CATHODE
Anode
A
Cathode ANODE
a
z
&
(3)
XN4608
G) MUTE
SLP-181B
tong
anobe
short
cathode
SCAN CONTROL
6) SQUELCH
IN
FILT
OUTP
FILTER
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