Aiwa cx jn77

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CX-JN77

SERVICE MANUAL

Ver 1.0 2004.04

AEP Model
UK Model
E Model

CX-JN77 is the amplifier, CD player, tape deck
and tuner section in JAX-N77lPK77.

Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM74-F1 BD81
Section Base Unit Name BU-F1BD81A
Optical Pick-up Block Name KSM-215DCP
Tape deck Model Name Using Similar Mechanism NEW
3501) Tape Transport Mechanism Type CWM43FFl34
SPECIFICATIONS

Amplifier section

Chilean, Peruvian, Mexican models

DIN power output (rated); 100 + 100 watts (6 ohms at
l kHzi DIN)

Continuous RMS power output (reference):
125 + 125 walls (6 ohms at
1 kHz. 10% THD)

Music power output (reference):
250 + 250 Watts (6 ohms at
l kHzi 10% THD)

AEP, UK, CIS models

The tollowing measured at Ac 120 127, 220 240 V

50/60 Hz

DIN power output (rated): 144 + 144 watts (6 ohms at
1 kHzi DIN)

Continuous RMS power output (reference):
180 + 180 watts (6 ohms at
1 kHzi 10% THD)

Inputs
VIDEO/MD IN (phono Jacks):
voltage 450/250 my,
impedance 47 kilohnu
Outputs
PHONES (stereo mini jack);
accepts headphones or
8 ohms or more

CD player section
System

Laser

Frequency response
Slgllalrlnrnolse ratio
Dynamic range

Tape deck section

Recording system
Frequency response

Tuner section

Compact disc and digital
audio system
Semiconductor laser
(1:780 iim)

Emission duration:
COHUHUOlIS

2 Hz , 20 kHz (:05 dB)
More than 90 dB

More than 90 dB

(Hrack Zechannel, stereo
50 , 11000 Hz (:3 dB)
using Sony TYPE 1
casselles

FM stereo, FM/AM superheterodyiie tuner

FM tuner section
Tuning range
Russian models

65.0 r 74.0 MHZ

(There is no stereo eftecl.

1(JekHz step)
87.5 7108.0MH2
(507m; step)

Other models

Antenna

Antenna lermnlals
Inlermedlale frequency
AM tuner section
Tuning range
PanrAmerlcan models:

87.5 7108.0 MHZ
(5()ekHz step)

EM lead antenna

75 ohms unbalanced
10.7 MHZ

530 71,710 kHz
(with the tuning lnlerval
set at 10 kHz)

531 , 1710 kHz

(with the tuning lnlerval
set at 9 kHz)

European and Russian models:

Antenna
Antenna terminals
Intermediate frequency

531 , L602 kHz (with the
Inning interval set at

9 kHz)

AM loop antenna
External antenna terminal
450 kHz

- Continued on next page -

SPEAKER: accepts impedance of o to
COMPACT DISC DECK RECEIVER
9-877-745-01 Sony Corporation
2004D05-1 Home Audio Company
© 2004.04 Published by Sony Engineering Corporation

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CX-J N77

General

Power requirements
European and Russian models:

230 v AC, 50/50 Hz

127 V AC, 50 Hz

120 v 220 v or

230 , 240 V AC, 50/50 Hz
Adjustable wtth voltage
selector

Mexican models:
Other models:

Power consumption
European and Russian models:
180 watts
0.25 watts (at the Power
Saving Mode)
Other models: 170 watts

Dimensions (W/h/d) Incl. projecting parts and controls
Amplifier/Tuner/Tape/CD section:

Approx, 280 X 325 X

425 mm
Mass Approx, 9.9 kg

Design and speeiticauons are subject to change
WIIIIOIII notice,

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK A 0R DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

Notes on chip component replacement

0 Never reuse a disconnected chip component.

0 Notice that the minus side ofa tantalum capacitor may be dame
aged by heat.

Flexible Circuit Board Repairing

- Keep the temperature of the soldering iron around 270 °C dur-
ing repairing.

- Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

0 Be careful not to apply force on the conductor when soldering
or unsoldering.

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.

This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.

Ci ASS t I ASFR PRonLcT

KLASE 1 LA aAPPAnr

UNLEADED SOLDER

Boards requiring use ofunleaded solder are printed with the lead-

free mark (LF) indicating the solder contains no lead.

(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)

LEAD FREE MARK

Unleaded solder has the following characteristics.

0 Unleaded solder melts at a temperature about 40 °C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solderjoint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if the

heated tip is applied for too long, so be careful!

0 Strong viscosity
Unleaded solder is more viscoues (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges oc-
cur such as on IC pins, etc.

I Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.