Sharp cd ba 120 service manual

Page 1

CD-BA120/125

SHARP SERVICE MANUAL

No. XXXXXXXXXXXXX

.-

g CD-BA120

_,.

CD-BA120 Mini Component System consisting of CD-BA120
(main unit) and CP-BA120 (speaker system).

CD-BA125

CD-BA125 Mini Component System consisting of
CD-BA125 (main unit), CP-BA125 (Front speaker) and
GBOXSOO42AWM1 (rear spaeker).

Illustration: CD-BA125

I lfiOMPACT
DIGITAL AUDIO

/- c

IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)
SPECIFICATIONS
NAMES OF PARTS ..
OPERATION MANUAL.
QUICK GUIDE
DISASSEMBLY ..
REMOVING AND
ADJUSTMENT ...................................
NOTES ON SCHEMATIC DIAGRAM
WAVEFORMS OF CD CIRCUIT.
BLOCK DIAGRAM ......................

VOLTAGE ..............................................
TROUBLESHOOTING (CD SECTION) .
FUNCTION TABLE OF IC
FL DISPLAY .....................
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD

- In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.

ONTENTS %

/

This document has been published to be used

SHARP CORPORATION for after sales service only.

The contents are subject to change without notice.

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CD-BA120/125

TO THE OPERATION MANUAL.

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER

IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)

BEFORE RETURNING THE AUDIO PRODUCT

(Fire & Shock Hazard)

Before returning the audio product to the user, perform the

following safety checks.

1. Inspect all lead dress to make certain that leads are not
pinched orthat hardware is not lodged between the chassis
and other metal parts in the audio product.

. Inspect all protective devices such as insulating materials,
cabinet, terminal board, adjustment and compartment covers
or shields, mechanical insulators etc.

. To be sure that no shock hazard exists, check for leakage
current in the following manner.

Plug the AC line cord directly into a 120 volt AC outlet.
Using two clip leads, connect a 1.5k ohm, 10 watt resistor
paralleled by a 0.1 SpF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.
Use a VTVM or VOM with 1000 ohm per volt, or higher,
sensitivity to measure the AC voltage drop across the
resistor (See diagram).

Connect the resistor connection to all exposed metal parts
having a return path to the chassis (antenna, metal cabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.

CD-BA120/125

0 General

Power source:
Power consumption:

AC 120 V, 60 Hz
35 W

Dimensions: Width; 10-5/8 (270 mm)
Height; 11-13/16" (300 mm)
Depth; 14-11/16" (373 mm)
Weight: 10.6 lbs. (4.8 kg)

0 Amplifier section

Output power:
(Except for Canada)

10 watts minimum RMS per
channel into 8 ohms from
100 Hz to 20 kHz, 10 %
total harmonic distortion
HMS; 20 W (10 W +10 W)
(to % T.H.D.)

Speakers; 8 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)
Front speakers; 8 ohms
Rear speakers; 16 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)

Output power:
(For Canada)
Output terminals:
(CD-BA120)

Output terminals:
(CD-BA125)

0 Compact disc player section

Type: 3»disc multi-play compact
disc player

Non-contact. 3-beam semi-
conductor Iaser pickup
1»bit D/A converter

Signal readout:

D/A converter:
Frequency
response:
Dynamic range:

20 - 20,000 Hz
90 dB (1 kHz)

0 Tuner section

Frequency range: FM; 87.5-108 MHz

AM; 5304 ,720 kHz

®

VTVM
'0 AC SCALE 0'

1.5k ohms
10W

0.151.1F

TEST PROBE CONNECT TO

KNOWN EARTH
GROUND

TO EXPOSED
M ETAL PARTS

AllcheckmustberepeatedwiththeAClinecord plug connection
reversed.

Any reading of 0.3 volt FIMS (this corresponds to 0.2 milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.

SPECIFICATIONS

0 Cassette deck section

Frequency response: 50-14000 Hz (Normal tape)
Signal/noise ratio: 55 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/playback)

Wow and flutter: 0.3 % (WFlMS)

CP-BA120/125

0 Speaker section

Type:
Maximum input power:

4" (10 cm) full»range speaker
20 W

Rated input power: 10 W

Impedance: 8 ohms

Dimensions: Width; 8-11/16 (220 mm)
Height; 11-13/16 (300 mm)
Depth; 7-1/16 (180 mm)

Weight: 4.4 lbs. (2.0 kg)/each

0 Rear speaker section (CD-BA125 Only)

Type: 3-3/32"(8 cm) full-range speaker
Maximum input power: 5 W

Rated input power: 10 W

Impedance: 16 ohms

Dimensions: Width; 6" (150 mm)
Height; 6" (150 mm)
Depth; 3" (78 mm)

Weight: 0.9 lbs. (0.4 kg)/each

Specifications for this model are subject to change without

prior notice.