JVC HA-NC100-J/C/E Service Manual
SERVICE MANUAL
STEREO HEADPHONES
XC00920039
HA-NC100-J/C/E
Model No.
SPECIFICATION
Frequency response 10Hz - 22,000Hz
Noise cancellation frequency range 40Hz - 1,500Hz
Noise reduction more than 12 dB at 300Hz
Sensitivity 100dB/1mW (when ON), 103dB/1mW (when OFF)
Input impedance 36Ω (when ON), 64Ω (when OFF)
Power supply AAA battery (DC 1.5V) × 1
Battery life* approx. 25 hours** (using Manganese AAA battery),
approx. 50 hours** (using Alkaline AAA battery)
*Varies on operating conditions. **Without ambient noise.
Cord length 0 - 1.5m (4.9ft) (with L type stereo miniplug)
Mass 200g (7.06oz) (incl. cord and battery)
Accessories carrying pouch × 1 AAA battery (R03) × 1, dual plug adapter (for in-flight use) × 1
Design and specifications subject to change without notice.
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
No.XC009
2003/10
1.1 Disassembly method
SECTION 1
DISASSEMBLY
Headband ass'y
Microphone
E
Sub board
Driver unit ass'y (L)
C
Housing assembly (L)
Cord leader
Ear pad (R)
A
A
Driver unit ass'y (R)
B
Ear pad (L)
Main board
Microphone
Housing assembly (R)
D
Battery
Battery cover
D
(1) Remove the battery cover assembly and then take out a battery.
(2) Remove the ear pad (L) and (R) from the main assembly.
(3) Remove the four screws A and B attaching the housing assemblies, and take out the housing assembly (L) and (R) from the
main assembly.
(4) From the left side of the main assembly, remove the two screws C attaching the cord leader assembly, and take out the cord
leader assembly.
(5) From the right side of the main assembly, remove the two screws D attaching the main board, and take out the main board.
(6) From the left side of the main assembly, remove the screw E attaching the sub board, and take out the sub board.
Reference:
• Before attaching the housing assembly, inserted the microphone into a hollow of the housing assembly.
• P.C.Board assembly (Main board/Sub board, The part will not be supplied as an assembly.
1-2 (No.XC009)
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