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Aiwa CX-JN55 Service Manual

Compact disc deck receiver

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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
– Continued on next page –

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Summary of Contents for Aiwa CX-JN55

  • Page 1 CX-JN55 SERVICE MANUAL AEP Model UK Model Ver 1.1 2004.08 • CX-JN55 is the amplifier, CD player, tape deck and tuner section in JAX-N55. Model Name Using Similar Mechanism CX-JN77 CD Mechanism Type CDM74-F1BD81 Section Base Unit Name BU-F1BD81A Optical Pick-up Name...
  • Page 2 THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. • Usable with ordinary solder REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE It is best to use only unleaded solder but unleaded solder may PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR also be added to ordinary solder.
  • Page 3 CX-JN55 TABLE OF CONTENTS SERVICING NOTES EXPLODED VIEWS ..........4 7-1. Case Section ..............53 GENERAL 7-2. Tape Mechanism Deck Section (CWM43FF13) ..... 54 7-3. Cassette Box Section ............55 Location of Controls ............7 7-4. Front Panel Section ............56 7-5.
  • Page 4 CX-JN55 SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body.
  • Page 5 CX-JN55 HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF. 1 Remove the case (side-L). 2 Turn the loading gear in the direction of arrow A . 3 Pull-out the disc tray. SERVICE POSITION – CD MECHANISM DECK –...
  • Page 6 CX-JN55 – FRONT PANEL SECTION – MAIN board PANEL board front panel section tape mechanism deck – AMP BOARD – front panel section SUB TRANS board POWER board TRANS board MAIN board...
  • Page 7 CX-JN55 SECTION 2 This section is extracted from instruction manual. GENERAL • LOCATION OF CONTROLS Main unit ALPHABETICAL ORDER BUTTON DESCRIPTIONS ?/1 (power) 1 A – N O – Z Z PUSH (deck A) (eject) 0 ALBUM + wl Operation Dial...
  • Page 8: Remote Control

    CX-JN55 Remote control Setting the clock ALPHABETICAL ORDER BUTTON DESCRIPTIONS Use buttons on the remote for the operation. ?/1 (power) 1 A – E F – Z Press ?/1 to turn on the system. m/M (rewind/fast forward) ALBUM + qa FM MODE 4 Press CLOCK/TIMER SET.