DOWNLOAD Sharp CD-BA250 (serv.man4) Service Manual ↓ Size: 1.24 MB | Pages: 18 in PDF or view online for FREE

Model
CD-BA250 (serv.man4)
Pages
18
Size
1.24 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Part 1 - Text (1-18)
File
cd-ba250-sm4.pdf
Date

Sharp CD-BA250 (serv.man4) Service Manual ▷ View online

– 9 –
CD-BA250H/CD-BA2600H
T
urn on your system
4
4
1
2
The first time the unit is plugged,
the unit will enter the demonstra-
tion mode. You will see words
scroll.
Press the
X-BASS/DEMO button
to cancel the demon-
stration mode.
Press the ON/
STAND-BY button to
turn the power on.
1
Press the CD button.
2
Press the 
OPEN/CLOSE button to
open the disc tray
.
3
Place the CD(s) on the disc tray, label
side up.
When loading a third disc, press the
DISC SKIP button to turn the disc tray,
then place the CD in the open position.
4
Press the 
OPEN/CLOSE button to
close the disc tray
.
5
To select the CD you want to listen to
first, press one of 
 1 - 
 3 buttons on
the remote control.
6
Press the 
button to start playback.
12 cm (5”)
8 cm (3”)
Listening to a CD (CDs)
FM stereo mode indicator
FM stereo receiving indicator
1
Press the TUNER (BAND) button repeat-
edly to select the desired frequency
band (FM or AM).
2
Press the TUNING/TIME (
 or 
) but-
ton to tune in to the desired station.
When the TUNING/TIME button is
pressed for more than 0.5 seconds, scan-
ning will start automatically and the tuner
will stop at the first receivable broadcast
station.
T
o
 receive an FM stereo transmission:
Press the TUNER (BAND) button to display the
“ST” indicator
.
 will appear when an FM broadcast is in ste-
reo.
Listening to the radio
If trouble occurs
When this product is subjected to strong external interference
(mechanical shock, excessive static electricity, abnormal sup-
ply voltage due to lightning, etc.) or if it is operated incorrectly, it
may malfunction.
If such a problem occurs, do the following:
1.
Set the unit to the stand-by mode and turn the power
on again.
2.
If the unit is not restored in step 1, unplug and plug in
the unit, and then turn the power on.
3.
If neither step 1 nor 2 restores the unit, do the follow-
ing:
Press the ON/STAND-BY button to enter the power
stand-by mode.
Whilst pressing down the 
button and the X-BASS/
DEMO button, press the ON/STAND-BY button until
“CLEAR AL” appears.
Maintenance
Dirty heads, capstans or pinch rollers can cause poor
sound and tape jams. Clean these parts with a cotton swab
moistened with commercial head/pinch roller cleaner or
isopropyl alcohol.
When cleaning the heads, pinch rollers, etc., unplug the
unit which contains high voltages.
After long use, the deck’s heads and capstans may be-
come magnetised, causing poor sound. Demagenetise
these parts once every 30 hours of playing/recording time
by using a commercial tape head demagnetiser. Read the
demagnetiser’s instructions carefully before use.
Clean the dust or stain on the CD pickup lens using a com-
mercial cleaning disc (brush type).
1
Open the cassette door by pushing the
area marked “
PUSH EJECT”.
2
Load a cassette into the TAPE 1 or TAPE
2 cassette compartment with the side to
be played facing toward you.
3
Press the TAPE (1 
 2) button to select
the cassette you want to listen to.
4
Press the 
 button to start playback.
TAPE 1
TAPE 2
Listening to a cassette tape (TAPE 1 or TAPE 2)
TAPE 1
TAPE 2
A
C
C
D
E
B
B
A   Playback head
B   Capstan
D   Erase head
E   Recording/Playback head
C   Pinch roller
CD-BA250H/CD-BA2600H
– 10 –
Descriptions of the PTY (Programme Type) codes, TP (Traffic Programme) and
TA (Traffic Announcement).
You can search for and receive the following PTY, TP and TA signals.
 
Note:
When you select a programme in the EON stand-by mode, the unit will display "TI"
instead of "TA".
NEWS
Short accounts of facts, events and publicly expressed views, reportage
and actuality.
AFFAIRS
Topical programme expanding or enlarging upon the news, generally in
different presentation style or concept, including debate, or analysis.
INFO
Programmes whose purpose is to impart advice in the widest sense.
SPORT
Programme concerned with any aspect of sport.
EDUCATE
Programme intended primarily to educate, of which the formal ele-
ment is fundamental.
DRAMA
All radio plays and serials.
CULTURE
Programmes concerned with any aspect of national or regional cul-
ture, including language, theatre, etc.
SCIENCE
Programmes about the natural sciences and technology.
VARIED
Used for mainly speech-based programmes usually of light-entertain-
ment nature, not covered by other categories. Examples include:
quizzes, panel games, personality interviews.
POP M
Commercial music, which would generally be considered to be of cur-
rent popular appeal, often featuring in current or recent record sales 
charts.
ROCK M
Contemporary modern music, usually written and performed by
young musicians.
EASY M
Current contemporary music considered to be "easy-listening", as op-
posed to Pop, Rock or Classical, or one of the specialised music
styles, Jazz, Folk or Country. Music in this category is often but not
always, vocal, and usually of short duration.
LIGHT M
Classical music for general, rather than specialist appreciation. Ex-
amples of music in this category are instrumental music, and vocal or
choral works.
CLASSICS
Performances of major orchestral works, symphonies, chamber mu-
sic, etc., and including Grand Opera.
OTHER M
Musical styles not fitting into any of the other categories. Particularly
used for specialist music of which Rhythm & Blues and Reggae are
examples.
WEATHER
Weather reports and forecasts and meteorological information.
FINANCE
Stock Market reports, commerce, trading, etc.
CHILDREN
For programmes targeted at a young audience, primarily for entertain-
ment and interest, rather than where the objective is to educate.
SOCIAL
Programmes about people and things that influence them individually
or in groups. Includes: sociology, history, geography, psychology and
society.
RELIGION
Any aspect of beliefs and faiths, involving a God or Gods, the nature
of existence and ethics.
PHONE IN
Involving members of the public expressing their views either by
phone or at a public forum.
TRAVEL
Features and programmes concerned with travel to near and far des-
tinations, package tours and travel ideas and opportunities. Not for
use for announcements about problems, delays, or roadworks affect-
ing immediate travel where TP/TA should be used.
LEISURE
Programmes concerned with recreational activities in which the listen-
er might participate. Examples include, Gardening, Fishing, Antique
collecting, Cooking, Food & Wine, etc.
JAZZ
Polyphonic, syncopated music characterised by improvisation.
COUNTRY
Songs which originate from, or continue the musical tradition of the
American Southern States. Characterised by a straightforward melo-
dy and narrative story line.
NATION M
Current Popular Music of the Nation or Region in that country's lan-
guage, as opposed to International 'Pop' which is usually US or UK
inspired and in English.
OLDIES
Music from the so-called "golden age" of popular music.
FOLK M
Music which has its roots in the musical culture of a particular nation,
usually played on acoustic instruments. The narrative or story may be
based on historical events or people.
DOCU-
MENT
Programme concerned with factual matters, presented in an investi-
gative style.
TEST
Broadcast when testing emergency broadcast equipment or receiv-
ers.
ALARM !
Emergency announcement made under exceptional circumstances to
give warning of events causing danger of a general nature.
NONE
No programme type (receive only).
TP
Broadcasts which carry traffic announcements.
TA
Traffic announcements are being broadcast.
Using the Radio Data System (RDS)
RDS is a broadcasting service which a growing number of FM stations provide.
These FM stations send additional signals along with their regular programme
signals. They send their station names, and information about the type of pro-
gramme such as sports or music, etc.
When tuned to an RDS station, "RDS" and the station name will be displayed.
"TP" (Traffic Programme) will appear on the display when the received broadcast car-
ries traffic information, and "TA" (Traffic Announcement) will appear whilst a traffic
information is on air.
"EON" will appear whilst the EON (Enhanced Other Networks information) data is
broadcast.
"PTYI" (Dynamic PTY Indicator) will appear whilst the Dynamic PTY station is
received.
"RT" (Radio Text) will appear whilst the unit receives the Radio text data.
"CT" (Clock Time) will appear whilst the unit receives the RDS CT data.
You can control the RDS by using the buttons on the main unit only.
Information provided by RDS
Each time the DISPLAY MODE button is pressed, the display will switch as fol-
lows:
When you are tuning in to a station other than an RDS station or to an RDS station
which sends weak signal, the display will change in the following order:
Station name (PS)
Frequency
Programme type (PTY)
RDS clock time
(8 Languages)
 
Date (for 3 seconds)
Programme type (PTY)
Clock-time and date (CT)
(English fixed)
Radio text (RT)
NO PS
NO PTY
FM 98.80 MHz
NO CT
NO RT
– 11 –
CD-BA250H/CD-BA2600H
1
Top Cabinet
1. Screw ...................... (A1) x4
11-1
2
Side Panel
1. Screw ...................... (B1) x8
11-1
(Left/Right)
3
CD Player Unit/
1. Turn on the power supply, ..
11-2
CD Tray Cover
    open the disc tray, take out
    the CD tray cover, and close.
    (Note 1)
2. Screw ...................... (C1) x1
3. Hook ........................ (C2) x3
4. Hook ........................ (C3) x2
5. Socket ..................... (C4) x2
4
Rear Panel with
1. Screw .................... (D1) x10
11-2
Fan Motor
2. Socket ..................... (D2) x1
5
Main PWB
1. Screw ...................... (E1) x3 11-2,12-2
2. Socket ..................... (E2) x3
3. Flat Cable ............... (E3) x1
4. Flat Wire .................. (E4) x1
6
Front Panel
1. Screw ....................... (F1) x2
12-2
7
Display PWB
1. Screw .................... (G1) x12
12-3
2. Flat Cable ............... (G2) x1
8
Tape Mechanism 1. Open the cassette holder. ..
12-3
2. Screw...................... (H1) x5
9
Headphones PWB 1. Screw ....................... (J1) x1
12-3
10
Turntable
1. Hook ........................ (K1) x2
12-4
2. Cover ...................... (K2) x1
11
Disc Tray
1. Turn fully the lock  lever in the
11-3
arrow direction.
2. While holding the lock lever,rotate
12-1
the cam gear until the cam gear
rib engages with the clamp lever.
3. Push the slide chassis backward to 12-5
engage the claw with the groove
and remove it in the direction
of the arrow. ...............  (L1) x6
12
CD Servo PWB
1. Screw ...................... (M1) x1
12-6
(Note 2)
2. Hook ........................ (M2) x2
3. Socket ..................... (M3) x4
13
CD Mechanism
1. Hook ........................ (N1) x2
13-1
2. Hook ........................ (N2) x3
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need to
be removed when disassembling the unit. After servicing
the unit, be sure to rearrange the leads where they were
before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
Figure 11-2
Figure 11-3
CD-BA250H/CD-BA2600H
STEP
REMOVAL
PROCEDURE
FIGURE
Figure 11-1
CD-BA250H/CD-BA2600H
Note 1: How to open the changer manually. (Fig. 11-3)
1. In this state, turn fully the lock lever in the arrow direction through
the hole on the loading chassis bottom.
2. While holding the lock lever, rotate the cam gear anticlockwise until the
cam gear rib engages with the clamp lever. (Fig. 12-1)
3. After that, push forward the CD slide chassis.
Note 2:
1. After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the front end
of the connector so as to protect the optical pickup from electro-
static damage.
Lock Lever
CD Player Unit
(Bottom View)
(B1) x 4
ø3 x 10mm
(B1) x 2
ø3 x 10mm
Rear
Panel
(B1) x 2
ø3 x 10mm
Side Panel
(Right)
Side Panel
(Left)
(A1) x 2
ø3 x 12mm
(A1) x 2
ø3 x 12mm
Top Cabinet
(E1) x 1
ø3 x 10mm
(C3) x 1
(D1) x 2
ø3 x 10mm
(D2) x 1
CD Player
Unit
CD Tray  Cover
Pull
(C3) x 1
(C4) x 2
(C2) x 3
1
1
2
CD Servo
PWB
(C1) x 1
ø3 x 10mm
(D1) x 8
ø3 x 10mm
Rear
Panel
Main PWB
Lug Wire
Note 3:
1. Be careful not to break the claw of the CD mechanism.
2. When fining back the cam gear assembly, let it lock by front
movement.
CD-BA250H/CD-BA2600H
– 12 –
Figure 12-1
Figure 12-2
Figure 12-3
Figure 12-4
Figure 12-5
Figure 12-6
Clamp Lever
CD Player Unit
(Top View)
Cam Gear Rib
Turntable
Slide
Chassis
(K2) x 1
CD Player Unit
(K1) x 2
1
3
2
(L1) x 3
(L1) x 3
Main PWB
Front Panel
Headphones 
PWB
Transformer
PWB
Power PWB
(E2) x 2
(E4) x 1
(E3) x 1
(E2) x 1
(F1) x 2
ø3 x 8mm
(E1) x 2
ø3 x 10mm
(G2) x 1
(G1) x 12
ø3 x 10mm
(H1) x 5
ø3 x 10mm
Display PWB
Front Panel
Headphones
PWB
Open
Cassette
Holder
Tape
Mechanism
(J1) x 1
ø3 x 10mm
Lug Wire
(M3) x 2
(M2) x 2
(M3) x 2
CD Servo
PWB
Slide
Chassis
(M1) x 1
ø3 x 8mm
Page of 18
Display

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