Sony CX-JN44 Service Manual

SERVICE MANUAL
Ver. 1.2 2005.05
CX-JN44 is the amplifier, CD player, tape deck
and tuner section in JAX-S44.
Main unit
Amplifier section
AUDIO POWER SPECIFICATIONS
(USA models only)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 6 ohm loads, both channels driven, from
120 – 10,000 Hz: rated 140 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Continuous RMS power output (reference):
140 + 140 watts (6 ohms at
1 kHz, 10% THD)
Total harmonic distortionless than 0.07% (6 ohms at
1kHz, 60 W)
Inputs
VIDEO/MD IN (phono jacks):
voltage 450/250 mV,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8ohms or more
Sony Corporation
9-877-749-03
Personal Audio Group
2005E05-1
Published by Sony Engineering Corporation
© 2005.05
Model Name Using Similar Mechanism
CD CD Mechanism Type
Section Base Unit Name
Optical Pick-up Name
Tape deck Model Name Using Similar Mechanism
Section Tape Transport Mechanism Type

SPECIFICATIONS

SPEAKER: accepts impedance of 6 to
16 ohms
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
Frequency response 2 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
Tape deck section
Recording system 4-track 2-channel, stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz
(100-kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
COMPACT DISC DECK RECEIVER
CX-JN44
Canadian Model
AM tuner section
Tuning range 530 – 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 – 1,710 kHz
(with the tuning interval
set at 9 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements 120 V AC, 60 Hz
Power consumption
USA models:
205 watts
Canadian models: 260 VA
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/CD section:
Approx. 280 × 325 ×
425 mm
Mass
Approx. 9.8 kg
Design and specifications are subject to change
without notice.
US Model
NEW
CDM74-K6BD80
BU-K6BD80A
KSM-213DAP
NEW
CWM43FF13