Sony CX-JN88 Service Manual

SERVICE MANUAL
Ver 1.0 2004.05
• CX-JN88 is the amplifier, CD player, tape deck
and tuner section in JAX-N88/PK88.
Amplifier section
European and Russian models:
DIN power output (rated): 100 + 100 watts (6 ohms at
1 kHz, DIN)
Continuous RMS power output (reference):
125 + 125 watts (6 ohms at
1 kHz, 10% THD)
Music power output (reference):
250 + 250 watts (6 ohms at
1 kHz, 10% THD)
Australian model:
The following measured at AC 120, 220, 240 V
50/60 Hz
DIN power output (rated): 144 + 144 watts (6 ohms at
1 kHz, DIN)
Continuous RMS power output (reference):
180 + 180 watts (6 ohms at
1 kHz, 10% THD)
Other models:
The following measured at AC 120, 220, 240 V
50/60 Hz
DIN power output (rated): 144 + 144 watts (6 ohms at
1 kHz, DIN)
Continuous RMS power output (reference):
180 + 180 watts (6 ohms at
1 kHz, 10% THD)
Sony Corporation
9-877-788-01
Home Audio Company
2004E05-1
Published by Sony Engineering Corporation
© 2004.05
Model Name Using Similar Mechanism
CD CD Mechanism Type
Section Base Unit Name
Optical Pick-up Block Name
Tape deck Model Name Using Similar Mechanism
Section Tape Transport Mechanism Type
SPECIFICATIONS
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
SURROUND 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
COMPACT DISC DECK RECEIVER
CX-JN88
AEP Model
Australian Model
CX-JN77
CDM74-F1BD81
BU-F1BD81A
KSM-215DCP
CX-JN77
CWM43FR34
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
Russian models 65.0 – 74.0 MHz
(There is no stereo effect.
10-kHz step)
87.5 – 108.0 MHz
(50-kHz step)
Other models 87.5 – 108.0 MHz
(50-kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
– Continued on next page –
E Model