JVC HA-NC70-J/C/E Service Manual

SERVICE MANUAL

STEREO HEADPHONES

XC02920052

HA-NC70-J/C/E

Model No.

TABLE OF CONTENTS

1 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Model No.

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.XC029

2005/2

SPECIFICATION

HA-NC70-J/-C/-E

Frequency response 14Hz - 22,000Hz

Noise cancellation frequency range 150Hz - 1,000Hz

Noise reduction more than 10 dB at 500Hz

Sensitivity 99dB/1mW (when ON), 99dB/1mW (when OFF)

Input impedance 28Ω (when ON), 48Ω (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 1.5m (4.9ft) (from the mini plug to the left Channel of headphone)

Mass 76g (2.68oz) (incl. cord and battery)

Accessories carrying pouch × 1, Manganese AAA battery (R03) × 1, dual plug adapter (for in-flight use) × 1

Design and specifications subject to change without notice.

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