SERVICE MANUAL
Ver 1.1 2004.08
• CX-JN55 is the amplifier, CD player, tape deck
and tuner section in JAX-N55.
Amplifier section
DIN power output (rated): 52 + 52 watts (6 ohms at
1 kHz, DIN)
Continuous RMS power output (reference):
65 + 65 watts (6 ohms at
1 kHz, 10% THD)
Music power output (reference):
130 + 130 watts (6 ohms at
1 kHz, 10% THD)
Inputs
VIDEO/MD IN (phono jacks):
voltage 450/250 mV,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
SPEAKER:
accepts impedance of 6 to
16 ohms
Sony Corporation
9-877-791-02
Personal Audio Company
2004H05-1
Published by Sony Engineering Corporation
© 2004.08
Model Name Using Similar Mechanism
CD Mechanism Type
CD
Section
Base Unit Name
Optical Pick-up Name
Model Name Using Similar Mechanism
Tape deck
Section
Tape Transport Mechanism Type
SPECIFICATIONS
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
(λ=780 nm)
Emission duration:
continuous
2 Hz − 20 kHz (±0.5 dB)
Frequency response
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Tap e deck section
Recording system
4-track 2-channel, stereo
50 − 13,000 Hz (±3 dB),
Frequency response
using Sony TYPE I
cassettes
COMPACT DISC DECK RECEIVER
CX-JN55
AEP Model
UK Model
CX-JN77
CDM74-F1BD81
BU-F1BD81A
KSM-215DCP
CX-JN30
CWM43FF13
Tu ner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
65.0 − 74.0 MHz
Russian models
(There is no stereo effect.
10-kHz step)
87.5 − 108.0 MHz
(50-kHz step)
87.5 − 108.0 MHz
Other models
(50-kHz step)
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
531 − 1,602 kHz (with the
Tuning range
tuning interval set at
9 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
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