Sony NOISE CANCELLING HEADPHONES MDR-NC11 User manual

SERVICE MANUAL
NOISE CANCELING HEADPHONES
US Model
Canadian Model
AEP Model
E Model
Tourist Model
SPECIFICATIONS
MDR-NC11
Ver 1.1 2004.02
9-873-539-02 Sony Corporation
2004B05-1 Personal Audio Company
C2004.02 Published by Sony Engineering Corporation
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
General
Type dynamic, closed
Driver units 9 mm dia
Power handling capacity
50 mW
Impedance 20 ohms at 1 kHz
(when the power is on)
8 ohms at 1 kHz
(when the power is off)
Sensitivity 102 dB/mW (when the power is on)
98 dB/mW (when the power is off)
Frequency response
10 –22,000 Hz
Frequency range of active noise attenuation
50 –1,500 Hz more than 10 dB at
300 Hz
Power source DC 1.5 V, 1 ×R03 (size AAA) battery
Mass Approx. 47 g (1.7 oz) including battery
box, cord, and battery
Supplied accessories
Earbuds (S × 2, M × 2, L × 2)
Holder (1)
Carrying case (1)
Plug adaptor for in-flight use (single/dual) (1)
Operating Instructions (1)
Design and specifications are subject to change without
notice.

2
MDR-NC11 SECTION 1
GENERAL
Installing a battery
1
Open the lid on the rear side of the battery box.
2 Insert one R03 (size AAA) battery by matching
the + and – on the battery to the + and – in the
battery box.
3 Close the lid.
Battery life
When to replace the battery
Replace the battery with a new one when the POWER
indicator dims.
Battery
Sony alkaline battery LR03/AM-
4 (N)
Sony battery R03/UM-4 (NU)
Approx. hours
40 hours
20 hours
Selecting the
earbuds
The M size earbuds are attached to the headphones before
shipment. If you feel the M size earbuds do not suit your
ears, replace them with the supplied S or L size earbuds.
Plug adaptor (supplied)
When connecting to dual or
stereo mini jacks of in-flight
musicservices.
PC-MP1HG
(not supplied)
When connecting to the
remote control of a
WALKMAN*, etc.
To headphone jack
on airplane seats
When connecting to the
headphone jack (stereo mini
jack) of aWALKMAN*, etc.
2 Wear the headphones marked Rin your right
ear and the one marked Lin your left ear. Push
the earbud into your ear carefully so that the
earbud fits the hole of your ear snugly.
Note
Unless the headphones correctly fit your ears, noise
canceling will not function.
Adjust the earbuds position to sit on your ear comfortably,
and push them into the inside of your ears so that they fit
your ears snugly.
3 Turn on the power of the headphones.
The power indicator lights in red. The power
switch is located on the battery box. When
power is turned on, ambient noise is reduced,
and you can listen to music more clearly at a
lower volume.
4 Turn on the power of the AV equipment.
5 Adjust the volume.
Turn the VOL control.
(If you turn down the volume, the sound does
not mute completely.)
Notes on using on the airplane
•The supplied plug adaptor can be connected to dual and
stereo mini jacks.
•Do not use the headphones when use of electronic
equipment is prohibited or when use of personal
headphones for inflight music services is prohibited.
If you have any questions or problems concerning the
system that are not covered in this manual, please consult
the nearest Sony dealer.
After listening to music
Turn off the power of the headphones.
Notes
• The noise canceling function is only effective for noise in the
low frequency band. Although noise is reduced, it is not
canceled completely.
• Do not cover the microphone of the headphones with your
hands. The noise canceling function may not work properly.
• The noise canceling function may not work properly unless
the headphones are put on firmly.
• You can use the headphones even without turning on the
power. In this case, the noise canceling function is not active,
and the headphones operate as passive headphones.
• After you turn on the power of the headphones, you may hear
a slight hiss. This is the operating sound of the noise canceling
function, not a malfunction.
• In a quiet place, or depending on certain noises, you may feel
that the noise canceling function is not effective, or that noise
is accentuated. In this case, turn off the power of the
headphone.
• Interference noise can occur from nearby cellular phones.
Should this occur, locate the headphones further away from
the cellular phone(s).
Using the clip
You can fasten the battery box by its clip on a shirt pocket.
When carrying the headphones
You can attach the headphones to the supplied holder to
keep them together. The headphones and the battery box
can also be separately stored in the partitioned carrying case
(supplied).
While using the headphones, you can attach the holder to
the headphone cord.
Clip
Precautions
•Clean the headphones with a soft dry cloth.
•Do not leave the jackplug dirty otherwise the sound may
be distorted.
•Be sure to bring the headphones to the Sony dealer when
requiring a change of earbuds or repair work.
•The CE mark on the unit is valid only for products
marketed in the European Union.
•Do not leave the headphones in a location subject to direct
sunlight, heat or moisture.
•Do not subject the headphones to excessive shock.
•Handle the driver units carefully.
•To clean the earbuds, first remove them from the
headphones, and then clean them with water and mild
detergent. After cleaning, dry each earbud carefully
before use.
•The earbuds will need to be replaced from time to time. If
they are worn out by daily use or longtime storage,
replace them with new ones.
•If you fell drowsy or sick while using these headphones,
stop use immediately.
Notes on headphones
Preventing hearing damage
Avoid using headphones at high volume. Hearing experts
advise against continuous, loud and extended play. If you
experience a ringing in your ears, reduce the volume or
discontinue use.
Do not use headphones while driving and
cycling, etc.
As headphones reduce outside sounds, they may cause a
traffic accident. Also, avoid listening with your headphones
in situations where hearing must not be impaired, for
example, a railroad crossing, a construction site, etc.
Holder
Holder
Insert the #end first.
POWER
ONOFF
Microphone
L
RL
VOL
VOL
dual jacks stereo mini jacks
* WALKMAN is a registered trademark of Sony
Corporation.
Listening to music
1
Connect the headphones to the AV equipment.
Features
•Noise canceling headphones reduce ambient noise, and
provide a quieter environment to enhance audio
entertainment. Ambient sound is synthesized with an
anti-sound signal produced by the noise canceling circuit,
and reduced.
•Ultra compact earphones with 9mm driver unit fits
comfortably in the ear and closed type earphone structure
delivers deep bass sound.
•Soft silicon rubber earbuds are used for stable and
comfortable fit in the ears.
•Volume control function for easy connecting to your
portable audio player.
•New earphone holder minimizes cord tangles during
strage.
•Operates as passive headphones when noise canceling
circuit is not activated.
•Plug adaptor is supplied to connect directly to stereo or
dual jack of inflight music services.
This section is extracted from
instruction manual.

3
MDR-NC11
SECTION 2
ELECTRICAL ADJUSTMENT
NOISE CANCEL VOLUME ADJUSTMENT
Connection:
Procedure:
1. Generate a sine wave of specific frequency (250 Hz) from a
AF oscillator, and output it from a speaker placed at the for-
ward position.
2. Mount this set on the head, and turn on the [POWER] switch.
3. With this set mounted, adjust the RV1 (L-ch) and RV51 (R-
ch) so that the volume from the speaker becomes lowest au-
rally.
Note:
When the headphones are not covered with the ear pieces completely, the
adjustment may not be performed correctly.
Make sure that the ear pieces cover the headphone completely.
Adjustment Location:
– MAIN BOARD (Component Side) –
+
–amplifier
speaker
AF oscillator
NOISE CANCEL RV51 (R-ch)
VOLUME ADJUSTMENT RV1 (L-ch)
S101
[POWER]
OFF t ON

4
MDR-NC11 SECTION 3
DIAGRAMS
3-1. BLOCK DIAGRAM
P1
(LINE INPUT)
RV1
NOISE CANCEL
VOLUME (L)
BUFFER AMP
Q2
VOL
RV101
R-CH
R-CH
POWER AMP
IC101
POWER
AMP 92
1
S101
POWER
OFF
ON
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
1PC. 1.5V
POWER AMP
(IC101) B+
REGULATOR
IC102
B+
SWITCHING
Q101
D201
POWER ON
(L-ch)
(R-ch)
R-CH
HP1 (1/2)
(MICROPHONE)
(L-ch)
(R-ch)
HP1 (2/2)
(HEADPHONE)
: LINE INPUT (POWER ON)
: LINE INPUT (POWER OFF)
SIGNAL PATH
R-ch is omitted due to same as L-ch. LED DRIVE, OSC
Q201,202

MDR-NC11
55
Note on Printed Wiring Board:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
3-2. NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ωand 1/4W or less unless otherwise
specified.
•C: panel designation.
•A: B+ Line.
•H: adjustment for repair.
• Powervoltageis dc 1.5V and fedwithregulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground in
no-signal conditions.
no mark :POWER ON
( ) : POWER OFF
• Voltagesaretaken with aVOM(Inputimpedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F: LINE INPUT (POWER ON)
J: LINE INPUT (POWER OFF)
Caution:
Pattern face side: Partsonthepattern facesideseenfrom
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• Waveforms
1IC102 1(S.D), Q101 (Collector)
2Q201-1 (Base)
3Q201-1 (Collector), Q202-1 (Base)
20 mVp-p
36.4 µs
1.1 Vp-p
36.4 µs
0.8 Vp-p
36.4 µs
4Q201-2 (Base)
0.8 Vp-p
36.4 µs
5Q201-2 (Collector), Q202-1 (Collector), Q202-2 (Base)
1.3 Vp-p
36.4 µs
6Q202 (Emitter)
70 mVp-p
36.4 µs
7Q202-2 (Collector)
20 mVp-p
36.4 µs

MDR-NC11
66
3-3. PRINTED WIRING BOARD
IC101
IC102
MAIN BOARD (COMPONENT SIDE)
1-683-881-
11
(11)
1-683-881-
11
(11)
JC101
1
3
5
4
2B
1B 2C
1C 1C 1B
E
2B
2C
−1
−2
POWER
S101
OFF ON
POWER ON
D201
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
1PC. 1.5V
MAIN BOARD (CONDUCTOR SIDE)
P1
(LINE INPUT)
RED
WHT
BLK VOL
RV101
1 2 3 4 5 6
A
B
C
D
E
−1
−2
E
(L-ch)
(R-ch)
BLU
YEL
GRN
RED/BRN
GRN/BRN
BRN
BRN
(L-ch)
(R-ch)
RED
HP1
(MICROPHONE/HEADPHONE)
• Semiconductor
Location
Ref. No. Location
D201 B-5
IC101 B-3
IC102 B-3
Q2 D-4
Q52 D-4
Q101 D-4
Q201 B-5
Q202 B-4

MDR-NC11
77
3-4. SCHEMATIC DIAGRAM • See page 5 forWaveforms.
R6
R7 C7
RV1R5R3C113C1
R1
R2 R4
C2
C6
C8
C58
R10R9
C9 C12
R12
C10R8 R11 C11
C61R61C60R58
C13
C63R62R60R59
C59 C62
TP53
TP3
C108
C14
C64
C16
R13
C15C65
R63
C106
C105
C104
R101
JC101
C112
C111
C114
TP103
R201
C202
R202
R64 R65 C67
C17R15R14
C204
C203
R204R203
C52
R52 R54
R51 R56
C56
RV51R53 R55
C55C51
R57 C57
IC101RV101
S101
C201
R206
R205
C5
D201
C66C109
R/N
RED
G/N
GRN
GND
VCC
NAT
BLU
YEL
NAT
WHT
RED
BLK
47k
2.2k 1
2.2k470k4.7k0.010.1
2.7k
4.7k 1k
0.047
1
100
6.3V
100
6.3V
2.2k6.8k
0.22 2200p
10k
0.2218 10k 0.47
0.4710k0.2218
0.22
0.2210k2.2k6.8k
0.22 2200p
0.01
2200p
2200p
10
10V
4.7
0.10.1
4.7
10
10V
0.1
0.01
47k
0
0.1
10
10V
0.01
27
2200p
10k
2.2 8.2 220
4V
220
4V
8.22.2
0.1
2200p
10k10k
0.047
4.7k 1k
2.7k 47k
1
2.2k4.7k 470k
10.1
2.2k 1
LA4537M500/500
1
820
4.7k
1
CL-196HR
10
10V
10
10V
(L-ch)
(R-ch)
-1 -2
-1 -2
POWER ON
POWER AMP
VIN VOUT
S.D
GND
GND
-1-2
POWER
OFF
ON
-1
-2
VOL
1000p
1000p
(R-ch)
HP1
(MICROPHONE)
(1/2)
(L-ch)
P1
(LINE INPUT)
Q2
2SC4154TP
BUFFER AMP
Q101
DTA123YUA
SWITCHING
IC102
TK70203M
REGULATOR
HP1(2/2)
(HEADPHONE)
Q52
2SC4154TP
BUFFER AMP
DRY BATTERY
1PC. 1.5V
(IEC DESIGNATION R03)
SIZE"AAA"
Q201
UMW1N-TR
LED DRIVE,
OSC
Q202
UMA4N-TR
LED DRIVE,
OSC

MDR-NC11
88
SECTION 5
ELECTRICAL PARTS LIST
SECTION 4
EXPLODED VIEW MAIN
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
*A-3178-431-A MAIN BOARD, COMPLETE
*********************
< CAPACITOR >
C1 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C2 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V
C5 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C6 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C7 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C8 1-128-964-11 TANTALUM CHIP 100uF 20% 6.3V
C9 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C10 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C11 1-125-891-11 CERAMIC CHIP 0.47uF 10% 10V
C12 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C13 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C14 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C15 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C16 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C17 1-137-859-11 TANTALUM CHIP 220uF 20% 4V
C51 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C52 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V
C55 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C56 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C57 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C58 1-128-964-11 TANTALUM CHIP 100uF 20% 6.3V
C59 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C60 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C61 1-125-891-11 CERAMIC CHIP 0.47uF 10% 10V
C62 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C63 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C64 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C65 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C66 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C67 1-137-859-11 TANTALUM CHIP 220uF 20% 4V
C104 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C105 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C106 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C108 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C109 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C111 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C112 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C113 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C114 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C201 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: µ, for example:
uA. . : µA. . uPA. . : µPA. .
uPB. . : µPB. . uPC. . : µPC. .
uPD. . : µPD. .
• CAPACITORS
uF: µF
• COILS
uH: µH
C202 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C203 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C204 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
< LED >
D201 8-719-077-09 LED CL-196HR-CD-T (POWER ON)
< IC >
IC101 8-759-835-58 IC LA4537M-TE-L
IC102 8-759-348-89 IC TK70203M
< RESISTOR >
JC101 1-216-864-11 METAL CHIP 0 5% 1/16W
< TRANSISTOR >
Q2 8-729-602-21 TRANSISTOR 2SC4154-F
Q52 8-729-602-21 TRANSISTOR 2SC4154-F
Q101 8-729-924-28 TRANSISTOR DTA123YU
Q201 8-729-050-11 TRANSISTOR UMW1NTR
Q202 8-729-055-39 TRANSISTOR UMA4N-TR
< RESISTOR >
R1 1-216-826-11 METAL CHIP 2.7K 5% 1/16W
R2 1-218-863-11 METAL CHIP 4.7K 0.5% 1/10W
R3 1-218-863-11 METAL CHIP 4.7K 0.5% 1/10W
R4 1-218-847-11 METAL CHIP 1K 0.5% 1/10W
R5 1-216-853-11 METAL CHIP 470K 5% 1/16W
R6 1-216-841-11 METAL CHIP 47K 5% 1/16W
R7 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R8 1-216-800-11 RES-CHIP 18 5% 1/10W
R9 1-218-867-11 RES-CHIP 6.8K 5% 1/10W
R10 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R11 1-216-833-11 METAL CHIP 10K 5% 1/16W
R12 1-216-833-11 METAL CHIP 10K 5% 1/16W
R13 1-216-793-11 RES-CHIP 4.7 5% 1/10W
R14 1-216-789-11 METAL CHIP 2.2 5% 1/16W
R15 1-216-796-11 RES-CHIP 8.2 5% 1/10W
R51 1-216-826-11 METAL CHIP 2.7K 5% 1/16W
R52 1-218-863-11 METAL CHIP 4.7K 0.5% 1/10W
R53 1-218-863-11 METAL CHIP 4.7K 0.5% 1/10W
R54 1-218-847-11 METAL CHIP 1K 0.5% 1/10W
R55 1-216-853-11 METAL CHIP 470K 5% 1/16W
1
2
P1
#1
#1
4
7
7
6
9
13
12 11
3
10
HP1
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Accessories are given in the last of the elec-
trical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑↑
Parts Color Cabinet's Color
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 3-235-824-01 KNOB, POWER
2 X-3381-832-1 CASE (UPPER) SUB ASSY
3 3-330-637-01 CUSHION (T)
4 3-236-543-01 BUSHING (LOWER), BATTERY CASE
6 3-235-828-01 BUSHING (UPPER), BATTERY CASE
7 4-220-438-01 PIECE (M), EAR (CLEAR BLUE BLACK)
7 4-220-438-21 PIECE (M), EAR (CLEAR BLACK)
9 3-235-820-01 LID, BATTERY CASE
10 X-3382-038-1 CASE (LOWER) SUB ASSY
*11 A-3178-431-A MAIN BOARD, COMPLETE
12 3-235-827-01 TERMINAL (-), BATTERY
13 3-235-826-01 TERMINAL (+), BATTERY
HP1 A-3174-443-A HEADPHONE ASSY
P1 1-823-514-11 CORD (WITH PLUG)
#1 7-685-102-19 SCREW, +P 2X4 TYPE2 NON-SLIT
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.
Ver 1.1

MDR-NC11
88
SECTION 5
ELECTRICAL PARTS LIST
SECTION 4
EXPLODED VIEW MAIN
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
*A-3178-431-A MAIN BOARD, COMPLETE
*********************
< CAPACITOR >
C1 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C2 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V
C5 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C6 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C7 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C8 1-128-964-11 TANTALUM CHIP 100uF 20% 6.3V
C9 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C10 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C11 1-125-891-11 CERAMIC CHIP 0.47uF 10% 10V
C12 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C13 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C14 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C15 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C16 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C17 1-137-859-11 TANTALUM CHIP 220uF 20% 4V
C51 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C52 1-165-176-11 CERAMIC CHIP 0.047uF 10% 16V
C55 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C56 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C57 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
C58 1-128-964-11 TANTALUM CHIP 100uF 20% 6.3V
C59 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C60 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C61 1-125-891-11 CERAMIC CHIP 0.47uF 10% 10V
C62 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C63 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C64 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C65 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C66 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C67 1-137-859-11 TANTALUM CHIP 220uF 20% 4V
C104 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C105 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C106 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C108 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C109 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C111 1-104-851-11 TANTALUM CHIP 10uF 20% 10V
C112 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C113 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C114 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C201 1-125-837-11 CERAMIC CHIP 1uF 10% 6.3V
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: µ, for example:
uA. . : µA. . uPA. . : µPA. .
uPB. . : µPB. . uPC. . : µPC. .
uPD. . : µPD. .
• CAPACITORS
uF: µF
• COILS
uH: µH
C202 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C203 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C204 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
< LED >
D201 8-719-077-09 LED CL-196HR-CD-T (POWER ON)
< IC >
IC101 8-759-835-58 IC LA4537M-TE-L
IC102 8-759-348-89 IC TK70203M
< RESISTOR >
JC101 1-216-864-11 METAL CHIP 0 5% 1/16W
< TRANSISTOR >
Q2 8-729-602-21 TRANSISTOR 2SC4154-F
Q52 8-729-602-21 TRANSISTOR 2SC4154-F
Q101 8-729-924-28 TRANSISTOR DTA123YU
Q201 8-729-050-11 TRANSISTOR UMW1NTR
Q202 8-729-055-39 TRANSISTOR UMA4N-TR
< RESISTOR >
R1 1-216-826-11 METAL CHIP 2.7K 5% 1/16W
R2 1-218-863-11 METAL CHIP 4.7K 0.5% 1/10W
R3 1-218-863-11 METAL CHIP 4.7K 0.5% 1/10W
R4 1-218-847-11 METAL CHIP 1K 0.5% 1/10W
R5 1-216-853-11 METAL CHIP 470K 5% 1/16W
R6 1-216-841-11 METAL CHIP 47K 5% 1/16W
R7 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R8 1-216-800-11 RES-CHIP 18 5% 1/10W
R9 1-218-867-11 RES-CHIP 6.8K 5% 1/10W
R10 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R11 1-216-833-11 METAL CHIP 10K 5% 1/16W
R12 1-216-833-11 METAL CHIP 10K 5% 1/16W
R13 1-216-793-11 RES-CHIP 4.7 5% 1/10W
R14 1-216-789-11 METAL CHIP 2.2 5% 1/16W
R15 1-216-796-11 RES-CHIP 8.2 5% 1/10W
R51 1-216-826-11 METAL CHIP 2.7K 5% 1/16W
R52 1-218-863-11 METAL CHIP 4.7K 0.5% 1/10W
R53 1-218-863-11 METAL CHIP 4.7K 0.5% 1/10W
R54 1-218-847-11 METAL CHIP 1K 0.5% 1/10W
R55 1-216-853-11 METAL CHIP 470K 5% 1/16W
1
2
P1
#1
#1
4
7
7
6
9
13
12 11
3
10
HP1
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Accessories are given in the last of the elec-
trical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑↑
Parts Color Cabinet's Color
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 3-235-824-01 KNOB, POWER
2 X-3381-832-1 CASE (UPPER) SUB ASSY
3 3-330-637-01 CUSHION (T)
4 3-236-543-01 BUSHING (LOWER), BATTERY CASE
6 3-235-828-01 BUSHING (UPPER), BATTERY CASE
7 4-220-438-01 PIECE (M), EAR
9 3-235-820-01 LID, BATTERY CASE
10 X-3382-038-1 CASE (LOWER) SUB ASSY
*11 A-3178-431-A MAIN BOARD, COMPLETE
12 3-235-827-01 TERMINAL (-), BATTERY
13 3-235-826-01 TERMINAL (+), BATTERY
HP1 A-3174-443-A HEADPHONE ASSY
P1 1-823-514-11 CORD (WITH PLUG)
#1 7-685-102-19 SCREW, +P 2X4 TYPE2 NON-SLIT
The components identified by
mark 0or dotted line with mark
0are critical for safety.
Replace only with part number
specified.
When indicating parts by reference
number, please include the board.

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
9
MDR-NC11
MAIN
R56 1-216-841-11 METAL CHIP 47K 5% 1/16W
R57 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R58 1-216-800-11 RES-CHIP 18 5% 1/10W
R59 1-218-867-11 RES-CHIP 6.8K 5% 1/10W
R60 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R61 1-216-833-11 METAL CHIP 10K 5% 1/16W
R62 1-216-833-11 METAL CHIP 10K 5% 1/16W
R63 1-216-793-11 RES-CHIP 4.7 5% 1/10W
R64 1-216-789-11 METAL CHIP 2.2 5% 1/16W
R65 1-216-796-11 RES-CHIP 8.2 5% 1/10W
R101 1-216-841-11 METAL CHIP 47K 5% 1/16W
R201 1-216-802-11 RES-CHIP 27 5% 1/10W
R202 1-216-833-11 METAL CHIP 10K 5% 1/16W
R203 1-216-833-11 METAL CHIP 10K 5% 1/16W
R204 1-216-833-11 METAL CHIP 10K 5% 1/16W
R205 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R206 1-216-820-11 METAL CHIP 820 5% 1/16W
< VARIABLE RESISTOR >
RV1 1-223-274-11 RES, ADJ, CERMET (3 TYPE) 2.2K
RV51 1-223-274-11 RES, ADJ, CERMET (3 TYPE) 2.2K
RV101 1-227-456-11 RES, VAR, CARBON 500/500 (VOL)
< SWITCH >
S101 1-771-337-21 SWITCH, SLIDE (POWER)
************************************************************
MISCELLANEOUS
**************
HP1 A-3174-443-A HEADPHONE ASSY
P1 1-823-514-11 CORD (WITH PLUG)
************************************************************
ACCESSORIES
************
01-477-125-11 ADAPTOR, PLUG (DUAL)
3-046-415-01 PIECE (L), EAR (CLEAR BLUE BLACK)
3-046-415-21 PIECE (L), EAR (CLEAR BLACK)
3-236-544-01 CARRYING PORCH
3-236-545-01 HOLDER (TO FIX HEADPHONE)
3-240-376-11 MANUAL, INSTRUCTION
(ENGLISH, FRENCH, SPANISH)
3-240-376-21 MANUAL, INSTRUCTION
(GERMAN, ITALIAN, PORTUGUESE, RUSSIAN)
(AEP, E)
3-240-376-31 MANUAL, INSTRUCTION
(POLISH, CZECK, HUNGARIAN, SLOVAKIAN)
(AEP, E)
4-220-439-01 PIECE (S), EAR (CLEAR BLUE BLACK)
4-220-439-21 PIECE (S), EAR (CLEAR BLACK)
The components identified by mark 0or dotted
line with mark 0are critical for safety.
Replace only with part number specified.
Ver 1.1

MDR-NC11
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 2002.02 New
1.1 2004.02 Addition of EAR, PIECE (S), (M), (L) of Clear black type (SPM-04008)