Sharp CD-BA300 User manual

– 1 –
CD-BA300
No. S1104CDBA300/
CONTENTS
Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)....................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 2
NAMES OF PARTS ........................................................................................................................................................... 3
OPERATION MANUAL ...................................................................................................................................................... 5
DISASSEMBLY.................................................................................................................................................................. 9
REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 12
ADJUSTMENT ................................................................................................................................................................. 13
BLOCK DIAGRAM ........................................................................................................................................................... 17
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD..............................................................................................20
VOLTAGE ........................................................................................................................................................................ 38
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 39
TYPES OF TRANSISTOR AND LED................................................................................................................................39
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 40
TROUBLESHOOTING ..................................................................................................................................................... 41
FUNCTION TABLE OF IC................................................................................................................................................ 45
LCD DISPLAY...................................................................................................................................................................51
REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
MINI COMPONENT SYSTEM
MODEL CD-BA300
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
SERVICE MANUAL
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
CD-BA300 Mini Component System consisting of
CD-BA300 (main unit), CP-BA300 (speaker system).

CD-BA300
– 2 –
■Tuner
Frequency range FM: 87.5-108 MHz
AM: 530-1,720 kHz
■Cassette deck
Frequency response 50-14,000 Hz (Normal tape)
Signal/noise ratio 55 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/playback)
Wow and flutter 0.25 % (WRMS)
Type 3-way type speaker system
2" (5 cm) Tweeter
5-1/4" (13 cm) Woofer
6-1/2" (16 cm) Subwoofer
Maximum input power (Total) 250 W
Rated input power (Total) 125 W
Impedance 6 ohms
Dimensions Width: 11-5/16" (287 mm)
Height: 13" (330 mm)
Depth: 11-1/16" (281 mm)
Weight 11.1 lbs. (5.0 kg)/each
■General
Power source AC 120 V, 60 Hz
Power consumption 210 W
Dimensions Width: 10-11/16" (270 mm)
Height: 13" (330 mm)
Depth: 14-11/16" (372 mm)
Weight 19.2 lbs (8.7 kg)
■Amplifier
Output power 125 watts minimum RMS per channel into 6 ohms from
60 Hz to 20 kHz, 10 % total harmonic distortion
Subwoofer : 75 W/ch
(60 Hz - 200 Hz, 6 ohms, 10 % T.H.D.)
Main : 50 W/ch
(200 Hz - 20 kHz, 6 ohms, 10 % T.H.D.)
Output terminals Speakers: 6 ohms
Headphones: 16-50 ohms (recommended; 32 ohms)
Input terminals Video/Auxiliary (audio signal): 500 mV/47 kohms
■CD player
Type 3-disc multi-play compact disc player
Signal readout Non-contact, 3-beam semiconductor laser pickup
D/A converter 1-bit D/A converter
Frequency response 20 - 20,000 Hz
Dynamic range 90 dB (1 kHz)
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
Specifications for this model are subject to change without
prior notice.
SPECIFICATIONS
CD-BA300
CP-BA300
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
pinchedorthathardwareisnotlodgedbetweenthechassis
and other metal parts in the audio product.
2. Inspect all protective devices such as insulating materials,
cabinet,terminalboard,adjustmentandcompartmentcovers
or shields, mechanical insulators etc.
3. 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 0.15µF 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
havingareturnpathtothechassis(antenna,metalcabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.
AllcheckmustberepeatedwiththeAClinecordplugconnection
reversed.
Anyreadingof0.3voltRMS(thiscorrespondsto0.2milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µF
1.5k ohms
10W
VTVM
AC SCALE

– 3 –
CD-BA300
NAMES OF PARTS
CD-BA300
■ Front panel
01. Disc Tray
02. Timer Set Indicator
03. Power On/Stand-by Button
04. Tape 2 Cassette Compartment
05. Tape 1 Cassette Compartment
06. Equalizer Mode Select Button
07. Volume Control
08. Extra Bass/Demo Mode Button
09. Disc Tray Open/Close Button
10. Disc Number Select Buttons
11. Disc Skip Button
12. Tuning and Time Up Button
13. CD or Tape Stop Button (with Indicator)
14. CD Button
15. Tuner (Band) Button
16. Tape (1 2) Button
17. Video/Auxiliary Button
18. Dimmer Button
19. Clock Button
20. Timer/Sleep Button
21. Headphone Jack
22. CD Play or Repeat,
Tape Play Button (with Indicator)
23. CD Fast Forward, Tape 2 Fast Forward
or Tuner Preset Up Button
24. Tuning and Time Down Button
25. Memory/Set Button
26. Tape 2 Record Pause Button
27.
28.
CD Fast Reverse, Tape 2 Rewind
or Tuner Preset Down Button
Remote Sensor
18 22
4
28
5
171615141312
24 25 26 27
23
19
20
21
67
1
2
3
89
10
11
■Display
01. Extra Bass Indicator
02. Disc Number Indicators
03. Spectrum Analyzer/
Volume Level Indicator
04.
Tape 2 Record Indicator
05. Memory Indicator
06. CD Random Play Indicator
07. CD Pause Indicator
08. Tape Play Indicator
09. CD Play Indicator
10. CD Repeat Indicator
11. CD Music Schedule Indicators
12. Sleep Indicator
13. FM Stereo Mode Indicator
14. FM Stereo Receiving Indicator
15. Timer Recording Indicator
16. Timer Play Indicator
16
5 7 8 9 10 11 12 13 14 156
4
12
33

CD-BA300
– 4 –
CD-BA300
■Rear panel
01. FM/AM Loop Antenna Jack
02. Video/Auxiliary (Audio Signal) Input Jacks
03. Speaker Terminals
04. AC Power Cord
1
3
2
4
■Remote control
01. Remote Control Transmitter
02. Disc Number Select Buttons
03. CD Pause Button
04. CD Memory Button
05. CD Fast Reverse Button
06. CD Clear Button
07. Tape 1 Play Button
08. Tape 1/Tape 2 Stop Button
09. Equalizer Mode Select Button
10. Tape 2 Record Pause Button
11. CD Button
12. Tuner (Band) Button
13. Power On/Stand-by Button
14. Extra Bass Button
15. CD Stop Button
16. CD Play or Repeat Button
17. CD Fast Forward Button
18. CD Random Button
19. Tuner Preset Up/Down Buttons
20. Tape 2 Play Button
21. Tape 2 Rewind Button
22. Tape 2 Fast Forward Button
23. Video/Auxiliary Button
24. Tape (1 2) Button
25. Volume Up or Down Buttons
1
215
16
17
18
19
20
21
24
3
6
4
7
8
9
10
14
13
12
11
5
25
22
23
✱✱
✱
Buttons with “✱” mark in the illustration can be operated with the remote control
only.
Other buttons can be operated on the main unit and the remote control.

– 5 –
CD-BA300
OPERATION MANUAL
CP-BA300
To confirm the time display:
Press the CLOCK button.
Thetimedisplay will appearfor about 5seconds.
Note:
The “CLOCK” or time will flash at the push of the CLOCK button when the AC power
supply is restored after a power failure or after unplugging the unit.
Readjust the clock as follows.
To readjust the clock:
Perform “Setting the Clock” from the beginning.
If the time display is flashing, step 3 (for selecting the 12-hour or 24-hour display) will
be skipped.
To change the 12-hour or 24-hour display:
1. Clear all the programmed contents.
[Refer to step 3 under “If trouble occurs” .]
2. Perform “Setting the Clock” from the beginning.
Setting the Clock
In this example, the clock is set for the 12-hour (AM 12:00) display.
1 Press the ON/STAND-BY button to turn the power on.
2 Press the CLOCK button and within 5 seconds, press the
MEMORY/SET button.
3 Press the TUNING/TIME ( or ) button to select the 12-hour or
24-hour display and then press the MEMORY/SET button.
4 Press the TUNING/TIME ( or ) button to adjust the hour and
then press the MEMORY/SET button.
● Press the TUNING/TIME ( or ) button once to advance the time by 1
hour. Hold it down to advance continuously.
● When the 12-hour display is selected, “AM” will change automatically to “PM”.
5 Press the TUNING/TIME ( or ) button to adjust the minutes
and then press the MEMORY/SET button.
● Press the TUNING/TIME ( or ) button once to advance the time by 1
minute. Hold it down to change the time in 5-minute intervals.
● The hour will not advance even if minutes advance from “59” to “00”.
● The clock begins counting from “0” seconds. (Seconds are not displayed.)
The time display will disappear after a few seconds.
“AM 12:00”→The12-hour displaywillappear.(AM12:00 -PM 11:59)
“AM 0:00” →The12-hourdisplay will appear.(AM 0:00 -PM 11:59)
“0:00” →The 24-hour display will appear. (0:00 - 23:59)
Note that this can only be set when the unit is first installed or it has been reset
1. Subwoofer
2. Bass Reflex Duct
3. Tweeter
4. Woofer
5. Speaker Wire for
SUBWOOFER Terminals
6. Speaker Wire for MAIN Terminals
3
4
3
4
2
1
2
5
6
5
6
1
Left speaker
Right speaker

CD-BA300
– 6 –
Troubleshooting Chart
Many potential “problems” can be resolved by the owner without calling a service tech-
nician. If something is wrong with this product, check the following before calling your
authorized SHARP dealer or service center.
■
Cassette deck
Symptom
● Cannot record.
● Cannot record tracks with proper
sound quality.
● Cannot erase completely.
● Sound skipping.
● Cannot hear treble.
● Sound fluctuation.
● Cannot remove the tape.
Possible cause
● Is the erase-protection tab removed?
● Is it a normal tape?
● (You cannot record on a metal or CrO 2
tape.)
● Is there any slack?
● Is the tape stretched?
● Arethecapstans, pinchrollers, orheads
dirty?
● Ifapowerfailureoccursduringplayback,
theheadsremainengagedwiththetape.
Do not open the compartment forcibly.
Wait until electricity resumes.
■
Tuner
Symptom
● Radio makes unusual noise con-
secutively.
Possible cause
● Is the unit placed near the TV or com-
puter?
● IstheFM/AM loopantennaplaced prop-
erly?
Move the AC power cord away from the
antenna if located near.
■
General
Symptom
● The clock is not on time.
● Whenabutton ispressed,the unit
does not respond.
● No sound is heard.
■
CD player
Symptom
● Playback does not start.
● Playback stops in the middle or is
not performed properly.
● Playback sounds are skipped, or
stopped in the middle of a track.
Possible cause
● Is the disc loaded upside-down?
● Does the disc satisfy the standards?
● Is the disc distorted or scratched?
● Is the unit located near excessive vibra-
tions?
● Is the disc very dirty?
● Has condensation formed inside the
unit?
■
Remote control
Symptom
● The remote control does not op-
erate.
Possible cause
● Is the AC power cord of the unit plugged
in?
● Is the battery polarity respected?
● Are the batteries dead?
● Is the distance or angle incorrect?
● Does the remote control sensor receive
strong light?
■Condensation
Sudden temperature changes, storage or operation
in an extremely humid environment may cause con-
densationinsidethecabinet (CD pickup,tapeheads,
etc.) or on the transmitter on the remote control.
Condensation can cause the unit to malfunction.
If this happens, leave the power on with no disc (or
cassette)intheunituntil normal playback is possible
(about 1 hour). Wipe off any condensation on the
transmitterwithasoftcloth before operating the unit.
Possible cause
● Did a power failure occur?
● Reset the clock.
● Setthisunit tothepower stand-bymode
and then turn it back on.
● If the unit still malfunctions, reset it.
● Is the volume level set to “0”?
● Are the headphones connected?
● Are the speaker wires disconnected?
■ If trouble occurs
When this product is subjected to strong external interference (mechanical shock, ex-
cessive static electricity, abnormal supply voltage due to lightning, etc.) or if it is oper-
ated 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 does not restore the unit, do the following:
① Press the ON/STAND-BY button to enter the power stand-by mode.
② While pressing down the / button and X-BASS/DEMO button, press the
ON/STAND-BY button until “CLEAR AL” appears.
Caution:
This operation will erase all data stored in memory including clock, timer settings,
tuner preset, and CD program.
■ Before transporting the unit
1. Press the ON/STAND-BY button to turn the power on.
2. Press the CD button.
3. Press the OPEN/CLOSE button to open the disc tray.
Remove all CDs inserted the unit.
4. Press the OPEN/CLOSE button to close the disc tray.
Make sure that “NO DISC” is displayed.
5. Press the ON/STAND-BY button to enter the stand-by mode, and then un-
plug the AC power cord from the AC outlet.
Troubleshooting Chart (continued)
■
Test of the remote control
Face the remote control directly to the remote sensor on the unit.
The remote control can be used within the range shown below:
Press the ON/STAND-BY button. Does the power turn on? Now, you can enjoy the
music.
Remote Control
Remote sensor
8" - 20'
(0.2 m - 6 m)

– 7 –
CD-BA300
Accessories Accesorios
FM/AM loop antenna × 1
Antena de cuadro de FM/AM
×
1
Remote control RRMCG0264AWSA
× 1
Controlador remoto
×
1
1
1
123
Battery Installation of the Remote Control
Instalación de las pilas del controlador remoto
Use 2 “AA” size batteries (UM/SUM-3, R6, HP-7 or similar). Batteries are not included. Use dos pilas del tamaño “AA” (UM/SUM-3, R6, HP-7 o equivalentes). Las pilas no están incluidas.
Remove the
Insert the batteries
Replace the cover.
battery cover.
as shown.
Extraiga la cubierta Inserte las pilas Vuelva a colocar la
de las pilas. como se muestra. cubierta.
2
2
System Connections Conexiones del sistema
3
3
FM antenna Antena de FM
AM loop antenna
Antena de cuadro de AM
Blue Azul
Red Rojo
Black Negro
Right speaker
Altavoz derecho
Left speaker Altavoz izquierdo
AC outlet (AC 120 V, 60 Hz) A un tomacorriente de
CA (120 V de CA, 60 Hz)
Right speaker
Altavoz derecho
Left speaker
Altavoz izquierdo
RCA cord (not supplied)
Cable RCA
(no suministrado)
To the line output jack A la toma de
salida de línea
VCR
Videograbadora
TV TV

CD-BA300
– 8 –
Turning on Your System Conexión de la alimentación de su sistema
4
4
The first time the unit is plugged, the unit will enter the demonstra- tion mode. You will see words scroll.
Cuando se enchufe por primera vez
el aparato, se establecerá en el
modo de demostración. Verá un
desplazamiento de palabras.
12
Press the X-BASS/DEMO button to cancel the demonstration mode.
Pulse el botón
X-BASS/DEMO para
cancelar el modo de
demostración.
Press the ON/ STAND-BY button to turn the power on.
Pulse el botón ON/
STAND-BY
para
conectar la
alimentación.
5” (12 cm) 12 cm
3” (8 cm) 8 cm
Listening to a CD (CDs)
Audición de un disco CD (discos CD)
1
Press the CD button. Pulse el botón CD.
2
Press the OPEN/CLOSE button to open the disc tray. Pulse el botón OPEN/CLOSE para abrir
la bandeja de discos.
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. Coloque el disco compacto en la bandeja
de discos, con el lado de la etiqueta hacia
arriba.
Cuando ponga un tercer disco, pulse el
botón DISC SKIP para girar la bandeja de
discos, y coloque el disco compacto en la
posición abierta.
4
Press the OPEN/CLOSE button to close the disc tray. Pulseelbotón OPEN/CLOSE paracerrar
la bandeja de discos.
5
To select the CD you want to listen to first, press one of 1 - 3 buttons. Para seleccionar el disco CD que desee
escucharprimero,pulse unodelos botones
1 - 3.
6
Press the button to start playback. Pulse el botón para iniciar la
reproducción.
Listening to a Cassette Tape (TAPE 1 or TAPE 2) Audición de una cinta de cassette (TAPE 1 o TAPE 2)
Listening to the Radio Audición de la radio
TAPE 1 TAPE 2
FM stereo mode indicator Indicador del modo de FM
en estéreo
FM stereo receiving indicator Indicador de recepción de FM
en estéreo
1
Open the cassette door by pushing the area marked “ PUSH EJECT”.
Abra la puerta del cassette pulsando la
parte marcada “ PUSH EJECT”.
2
Load the cassette into the TAPE 1 or TAPE 2 cassette compartment with the side to be played facing toward you. Cargue el cassette en el compartimiento
de cassette de TAPE 1 o de TAPE 2 con la
cara a reproducirse encarada hacia usted.
3
Press the TAPE (1 2) button to select the cassette you want to listen to. Pulse el botón TAPE (1 2) para
seleccìonar el cassette que desee
escuchar.
4
Press the button to start playback. Pulse el botón para iniciar la
reproducción.
1
Press the TUNER (BAND) button repeat- edly to select the desired frequency band (FM or AM). Pulse repetidamente el botón TUNER
(BAND) para seleccionar la banda de
frecuencia deseada (FM o AM).
2
Press the TUNING/TIME ( or ) but- ton to tune in to the desired station. When the TUNING/TIME ( or ) button is pressed for more than 0.5 seconds, scanning will start automatically and the tuner will stop at the first receivable broadcast station. Pulseelbotón TUNING/TIME( o )para
sintonizar la emisora deseada.
Cuandose pulseel botón
TUNING/TIME(
o ) durante más de 0,5 segundos, la
exploración se iniciará automáticamente y
el sintonizador se parará en la primera
emisora difusora que pueda recibirse.
To receive an FM stereo transmission: Press the TUNER (BAND) button so that the “ST” indicator lights up. ●“ ” will appear when an FM broadcast is in ste-
reo.
Para recibir la transmisión de FM en estéreo:
Pulse el botón TUNER (BAND) para que se encienda
el indicador “ST”.
●
“ ” aparecerá cuando una difusión de FM sea en
estéreo.

– 9 –
CD-BA300
1 Top Cabinet 1. Screw ..................... (A1) x4 9-1
2 Side Panel 1. Screw ..................... (B1) x8 9-1
(Left/Right)
3 CD Player Unit/ 1. Turn on the power supply, 9-2
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) x8 9-2
Fan Motor 2. Socket .................... (D2) x1
5 Main PWB 1. Screw ..................... (E1) x1 9-2
2. Socket .................... (E2) x4 10-2
3. Flat Cable .............. (E3) x1
6 AMP. PWB 1. Screw ..................... (F1) x5 10-3
2. Socket .................... (F2) x1
3. PWB Holder ........... (F3) x3
7 Front Panel 1. Screw ..................... (G1) x1 10-3
8 Display PWB 1. Knob....................... (H1) x1 10-4
2. Screw ..................... (H2) x12
3. Flat Cable .............. (H3) x1
9 Tape Mechanism 1. Open the cassette holder. 10-4
2. Screw...................... (J1) x5
10 Headphones PWB 1. Screw ..................... (K1) x1 10-4
11 Turntable 1. Hook....................... (L1) x2 10-5
2. Cover ..................... (L2) x1
12 Disc Tray 1. Turn fully the lock lever in the 9-3
arrow direction .
2. While holding the lock lever,rotate 10-1
the cam gear until the cam gear
rib engages with the clamp lever.
3. Push the slide holder backward to 10-6
engage the claw with the groove
and remove it in the direction
of the arrow. ............... (M1) x6
13 CD Servo PWB 1. Screw ..................... (N1) x1 11-1
(Note 2) 2. Hook....................... (N2) x2
3. Socket .................... (N3) x4
14 CD Mechanism 1. Hook....................... (P1) x2 11-2
2. Hook....................... (P2) x3
15 Loading Motor PWB 1. Hook....................... (Q1) x5 11-2
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.Takeoffnylon bands or wire holders wheretheyneedto
beremovedwhendisassemblingtheunit.Afterservicing
theunit,besure 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 9-2
Figure9-3
CD-BA300
STEP REMOVAL PROCEDURE FIGURE
Figure 9-1
CD-BA300
Note 1: How to open the changer manually. (Fig. 9-3)
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. 10-1)
3. After that, push forward the CD slide holder.
Note 2:
1. After removing the connector for the optical pickup from the
connector,wraptheconductivealuminiumfoilaroundthefrontend
of the connector so as to protect the optical pickup from electro-
static damage.
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.
Lock Lever
CD Player Unit
(Bottom View)
(B1)x4
ø3x10mm (B1)x2
ø3x10mm
Rear
Panel
(B1)x2
ø3x10mm
Side Panel
(Right)
Side Panel
(Left)
(A1)x2
ø3x12mm
(A1)x2
ø3x12mm Top Cabinet
(E1)x1
ø3x10mm
(C3)x1
(D1)x2
ø3x10mm
CD Player
Unit
CD Tray Cover
Pull
(C3) x1
(C4)x2 (C2) x3
1
1
2
CD Servo
PWB
(C1)x1
ø3x10mm
(D1)x6
ø3x10mm
Amp.
PWB
(D2)x1
Rear
Panel
Main PWB
Lug Wire

CD-BA300
– 10 –
Figure 10-1
Figure 10-2
Figure 10-3
Figure 10-4
Figure 10-5
Figure 10-6
Clamp Lever
CD Player Unit
(Top View)
Cam Gear Rib
Turntable
Slide
Chassis
(L2)x1
CD Player Unit
(L1)x2
1
3
2
(M1)x3
(M1)x3
Main PWB
Main PWB
Amp.
PWB
Transformer
PWB
(E3)x1
Power PWB(E2)x1
(E2)x1
(E2)x2
Amp.
PWB
(F1)x2
ø3x10mm
(F1)x2
ø3x10mm
(F2)x1
(F3)x1
(F1)x1
ø3x8mm (G1)x1
ø3x8mm
Push
(F3)x1
Push (F3)x1
Push
(H3)x1
(H2)x12
ø3x10mm
(J1)x5
ø3x10mm
(H1)x1
Display PWB
Headphones
PWB
Open
Cassette
Holder
Tape
Mechanism
(K1)x1
ø3x10mm

– 11 –
CD-BA300
1 Side Panel/ 1. Screw ..................... (A1) x4 11-3
Front Panel 2. Net.......................... (A2) x1
3. Caching Holder ...... (A3) x4
4. Screw ..................... (A4) x4
2 Subwoofer 1. Screw ..................... (B1) x4 11-4
3 Woofer 1. Screw .................... (C1) x4 11-4
4 Tweeter 1. Screw .................... (D1) x2 11-4
STEP REMOVAL PROCEDURE FIGURE
Figure 11-3
Figure 11-1 Figure 11-2
CP-BA300
Figure 11-4
(N3)x2
(N2)x2
(N3)x2
CD Servo
PWB Slide
Chassis
(N1)x1
ø3x8mm
(P2)x3
(P1)x1
(Q1)x5
(P1)x1
Loading
Motor
PWB
CD
Mechanism
(A1)x4
ø4x20mm
(A4)x2
ø4x20mm
(A3)x2
(A3)x2
(A2)x1
(A4)x2
ø4x20mm
(C1)x4
ø4x16mm
(B1)x4
ø4x16mm
(D1)x2
ø3x10mm
Tweeter
Woofer
Sub Woofer

CD-BA300
– 12 –
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps 1 to 7 and 9 of the disassembly method to
remove the tape mechanism.
How to remove the record/playback and erase
heads (TAPE 2) (See Fig. 12-1)
1. When you remove the screw (A1) x 2 pcs., the recording/
playback head and three-dimensional head of the erasing
head can be removed.
How to remove the playback head (TAPE 1)
(See Fig. 12-2)
1. When you remove the screw (B1) x 2 pcs., the playback
head.
How to remove the pinch roller (TAPE 1/2)
(See Fig. 12-3)
1. Carefully bend the pinch roller pawl in the direction of the
arrow <A>, and remove the pinch roller (C1) x 1 pc., in the
direction of the arrow <B>.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
How to remove the belt (TAPE 2) (See Fig. 12-4)
1. Remove the main belt (D1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (D2) x 1 pc.
How to remove the belt (TAPE 1) (See Fig. 12-4)
1. Remove the main belt (E1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (E2) x 1 pc.
How to remove the motor (See Fig. 12-5)
1. Remove the screws (F1) x 2 pcs., to remove the motor.
Figure 12-1
Figure 12-2
Figure 12-3
Figure 12-4Figure 12-5
(A1)x2
Ø2 x 9mm
TAPE 2
Record/Playback
Head
Erase Head
(B1)x2
Ø2 x 9mm
TAPE 1
Playback
Head
Pinch Roller
(C1)x1 <A>
<B>
Pinch
Roller
Pawl
Pull
TAPE 2 TAPE 1
Main Belt
(E1)x1
TAPE 2
Main Belt
(D1)x1
TAPE 1
Main Belt
(D1)x1
FF/REW
Belt
(D2)x1
FF/REW
Belt
(E2)x1
Motor
Motor
(F1) x2
Ø 2.6 x 5mm
Motor

– 13 –
CD-BA300
How to remove the pickup (See Fig. 13-2)
1. Remove the stop washer (B1) x 1 pc., to remove the gear
(B2).
2.Removethescrews(B3)x2pcs.,toremovetheshaft(B4).
3. Remove the pickup.
Note
After removing the connector for the optical pickup from the
connectorwraptheconductivealuminiumfoilaroundthefront
end of connector so as to protect the optical pickup from
electrostatic damage.
Figure 13-2
CD MECHANISM SECTION
Perform steps 1, 2, 3, 11,12,13 and 14 of the disassembly
method to remove the CD mechanism.
How to remove the loading motor
(See Fig. 13-1)
1. Bend the hooks (A1) x 5 pcs., to remove the loading motor.
2. Remove the drive belt (A2) x 1pc.
Figure 13-1
ADJUSTMENT
MECHANISM SECTION
•Driving Force Check
Torque Meter Specified Value
Play: TW-2111 Tape 1: Over 80 g
Tape 2: Over 80 g
•Torque Check
Torque Meter
Tape 2
Play: TW-2111 30 to 80 g.cm 30 to 80 g.cm
Fast forward: TW-2231 — 70 to 180 g.cm
Rewind: TW-2231 — 70 to 180 g.cm
Specified Value
Tape 1
Specified
Value
Adjusting
Point Instrument
Connection
Test Tape
Normal MTT-111 Variable 3,000 ±30 Hz Speaker
speed Resistor in terminal
motor. (Load
resistance:
6 ohms)
•Tape Speed
Figure 13-3
(A1)x2
(A1)x1
Loading Motor
CD Player
Chassis
(A1)x2
Pulley
Drive Belt
(A2) x1
Loading
Motor
(B1) x2
ø2.6 x6mm
Shaft
(B2) x1
Stop Washer
(B3) x1
Gear
(B4) x1
CD Mechanism
Pickup
TAPE MECHANISM
Tape
Motor
Variable Resistor in motor

CD-BA300
– 14 –
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
CD SECTION
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna Output: TP302
*2. Input: Antenna Output: TP301
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
AM IF 450 kHz 1,720 kHz T351 *1
AM Band — 530 kHz (fL): T306 *2
Coverage 1.1 ±0.1 V
AM Tracking 990 kHz 990 kHz (fL): T303 *1
*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal
•FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
FM Band — 87.50 MHz T301(fL): *1
Coverage 1.3 V ±50 mV
FM RF 98.00 MHz 98.00 MHz L312 *2
(10-30 dB)
Test Stage Instrument
Connection
Frequency Frequency
Display Setting/
Adjusting
Point
Figure 14-1 ADJUSTMENT POINTS
Figure 14-2
CD ERROR CODE DESCRIPTION
Error State Code
[Servo System Error]
0001 Cannot detect Pickup-in SW
0002 DSP access error
[Error during close operation]
0101 Open/Close SW not functioning (Low →High)
0103 Open/Close SW not functioning (High →Low)
[Error during open operation]
0201 Open/Close SW not functioning (Low →High)
0203 Open/Close SW not functioning (High →Low)
[Error during skip operation]
0302 Pickup-in SW is not detected
0306 During Disc 1 search, Open/Close SW or Clamp SW
or Disc SW do not change to low.
0307 Clamp SW not function (Low →High)
0308 Clamp SW not function (High →Low)
Items adjusted automatically
(1)Offsetadjustment (The offset voltage between the head
amplifier output and the VREF reference voltage is
compensated inside the IC.)
* Focus offset adjustment
* Tracking offset adjustment
(2) Tracking balance adjustment (waveform drawing
Fig.14-2 EFBL)
(3)Gainadjustment(Thegainiscompensated insidetheIC
sothattheloop gain at the gain crossover frequency will
be 0 dB.)
* Focus gain adjustment
* Tracking gain adjustment
•Adjustment
Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacingthepickup.Therefore,differentPWBsandpickups
can be combined freely.
Each time a disc is changed, these adjustments are
performed automatically. Therefore, playback of each disc
can be performed under optimum conditions.
IC301
AM IF
FM IF FM RF
T303
T306
T302 L312
AM
TRACKING fL
AM BAND
COVERAGE fL
T301 T351
FM BAND
COVERAGE fL
MAIN PWB
CNP301
FM/AM LOOP
ANTENNA
TP302
R357
R316
TP301
T
T
EFBL
FDO
TE
Stopped
CH1=500mV
DC 10:1 CH2=200mV DC 10:1 CH3=1V DC 10:1 500ms/div
(500ms/div)
NORM:20kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.000V
CH2 : 0.000V Main : 100K Zoom : 2k Mode : SINGLE Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2µs
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
CH2
v/DIV
200mV
1999/04/05 20:26:47

– 15 –
CD-BA300
TEST MODE
·Setting the test mode
Any one of test mode can be set by pressing several keys as follows.
<X-BASS> + <CD> + <POWER> TEST:CD operation test
Function:-CD test mode.
-Enter test mode.
C D T E S T
OPEN/CLOSE operation is using manual.
<< >>, << >> buttons make pick's slide possible.
Do TOC IL. Do normal play
When these following key is input
into PLAY key, track number can
be appoint directly
<<PLAY>> key input. <<MEMORY>> key input.
<< 1>> key: Track 4
<< 2>> key: Track 9
<< 3>> key: Track 15
<<STOP>> key input.
STOP
Laser ON.
<<MEMORY>> key input.
Tracking OFF play at that
specific point.
<<MEMORY>> key input.
Tracking ON play from
that specific point.
<<STOP>> key input.
STOP
IL isn't done
VOL — Last memory
BAL — CENTER
P.GEQ — FLAT
X-BASS — OFF
To cancel : Power OFF
Sliding the PICKUP with
<< >>, << >> button
must only be in STOP mode.
<<MEMORY>>
key input
Adjustment result
automaticallywill
display as below
for each 2 sec :
a) "FOFF_XX"
b) "TOFF_XX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"
explanation:
a) Focus off set ="FOFF_XX"
b) Tracking off set ="TOFF_XX"
c) Tracking balance ="TBAL_XX"
d) TGAN ="TGAN_XX"
f) Focus Gain ="FGAN_XX"
g) RF level shift ="RFLS_XX"
Adjustment result auto-
maticallywill display as
below
for each 2 sec :
a) "FOFF_XX"
b) "TOFF_XX"
c) "TBAL_XX"
d) "TGAN_XX"
f) "FGAN_XX"
g) "RFLS_XX"

CD-BA300
– 16 –
Standard Specification of Stereo System Error MessageDisplay Contents
Error Contents DISPLAY Notes
Output while Device Protection Operation 'PROTECT' 00: While in Protect Circuit Operate
01: Over Current Detection
02: DC Detection
03:
TAPE Mechanism Error 'ER-TA**' 00: Tape Mechanism Error
01: Initial Error
02:
03:
CD/VCD Pickup Mechanism Error 'ER-CD**' 00: Pickup Mechanism Error
01: PU-IN SW Detection NG
02:
03:
04:
CD Changer Mechanism Error 'ER-CD**' 10: Changer Error
11: Initial Error
12:
13:
Tray Error 'ET-CD**' 20: Tray Error
21:
22:
23:
Focus Not Match 'NO DISC'
IL Time Over 'NOT READ'
TUN PLL Unlock 'ER-TU**' 00: TUN Error
01: PLL Unlock
02:
03:

– 17 –
CD-BA300
Figure 17 BLOCK DIAGRAM (1/3)
+5V
CNS4 BI4
CNP4
M3
T/T UP DOWN
LOADING
+3.3V
TO DISPLAY SECTION
TO MAIN SECTION
CONSTANT
VOLTAGE
Q2
LASER
DRIVER
+3.3V
Q1
+5V
PICK UP UNIT
IC1
LC78645E
CD SERVO
VVDD LDD LDS
M
SW3
DISC
NUMBER
SW2
CLAMP
SW1
OPEN/
CLOSE
CNP8
CNP7
TRACKING COIL
FOCUS COIL
SW1
PICK UP
IN
M2
SLED
MOTOR
M1
SPINDLE
MOTOR
M
M
R-CH
Q3
XVDD RVDD LVDD ADAVDD RFVDD
XL1
33.8688MHz
OC. DISC NO CLAMP SW CD RES CLK DI DO CE DRF WRQ
+5V +5V
DGND L-CH
AGND
VCC3
VCC2
VCC4
VCC1
IC2
M63001FP
FOCUS/TRACKING/
SPIN/SLED
DRIVER
XIN
XOUT
RES
WRQ
DO
DI
CLK
CE
TIN2 TIN1 FIN2 FIN1
TD0
FD0
SPDO
SLDO
CONT5
CONT2 CONT3 CONT4
RCHO
RVSS
LVSS
LCHO
80
42
79
75
20
540
18
24
23 14
8
21
22
29
35
41
47 46
710
987
15
12
17 25 42
41 8339
4765 16
82
26 27
316452
316452
316452
54
71
61
62
63
69
57
56
55
51
50
40
37
19
28
26
23
22
21
3271689
615432
4543 44 25 70
64
65
66
48
49
18

CD-BA300
– 18 –
Figure 18 BLOCK DIAGRAM (2/3)
VIDEO IN
AUX
R
LR
L
R
L
R
L
R
L
JK601
FM
+B +B4
CLK
+B4
AM IF
OSC BUFF
AM
FM IF
FM
OSC
B.P.F
CNP301
CNS11
–20dB
ATT
Q103-
Q106
–B2
+B4
KIA4558P
OPE AMP.
IC70
IX03
9
IC704
IC703
IC702
Q121
Q122
Q603
Q604 Q605
Q606
10.7MHz
450kHz
FM
REC/PLAY
CLK
CE
DI
SYSTE
M
MUTE
DO DI CE
MO/ST
SWITCHING +B4
FM/AM
IC302
LC72131
PLL(TUNER)
FM/AM
OUT
L
R
BIAS
T1/T2
MUTING
P.B.
REC
AC BIAS
TAPE
TUNER
CD
PB
FROM CD SECTION
CNP7
ERASE
HEAD
SWITCHING
SWITCHING
SWITCHING
BIAS
Q110
Q111
Q109
Q126
SWITCHING
Q124
L103
OSC
BIAS Q128
L104
Q107
Q108
REC PB HEAD
TAPE 2
PB HEAD
TAPE 1
L-CH
R-CH
L-CH
R-CH
IC601
LC75341
AUDIO PROCESSOR
H/N
P.B
+B4
R
L
REC
R
L
L NF
R NF
ALC
REC
T1/T2
T1/T2
NOR/
HIGH
REF
R REC
L REC
POP REDUCE
R NF
L NF
SWITCHING L(T2)
R(T2)
R(T1)
L(T1)
IC101
PLAYBACK AND RECORD
/PLAYBACK AMP.
R
L
FM/AMMPXIN
STEREO
AM RF IN
AM OSC IN
FM
Q360
VT
OSC
X352
4.5MHZ
AM BAND
COVERAGE
AM TRACKING
T303 T306
Q302
X351
456kHz
MO/ST VCOFM
DET
FM+BGNDAM IF
CF351
IC303
LA1832S
FM/AM IF MPX.
AM MIX
CF352
T351
FM
RF
OSC
FM
L312 T301
CF303
T302
IC301
TA7358AP
FM FRONT END
BF301
7
8
41
3
1
2
1
24
2
23
3
22
6
9
16
14
12
15 19
10
17
18
8
7
20
5
21
13
4
34 5 7 89
6
2
1
12 45981713
14
15
1216182123
20 1 22 15 16 11
17
2110
16
10
15
11
14
12
13
7
3
79
9
7 8 17 18 3
1
23
2
24
21
4
456

– 19 –
CD-BA300
Figure 19 BLOCK DIAGRAM (3/3)
T801
POWER TRANSFORMER
AC120V/60Hz
–VF
VF2
VF1
Q801
+B6
+B5 +5V
UN-SW5V KIA7805AP
AN78L05
Q852
Q821
+B4
+B3
+B1
–B1
+B2
–B2
+B6
+B3
+B5
- -
+B4
+B4
-
JOG
JOG701
-
Q701-Q703
Q710-Q712
R
L
IC903
KIA4558P
OPE AMP.
R
R
LL
–20dB
ATT
+B5
RX701
REMOTE
SENSOR
8
P
M
P.
IC701(2/2)
IX0398AW
D804~D807
D803
D802
RY902
RY901
JK670
HEADPHONES
M901
FAN MOTOR
M
Q910
Q909
Q709
Q902
Q901
Q903
Q904
Q906
Q905
Q907
Q908
Q
603
Q
604 Q605
Q606
Q851
Q850
IC902
STK4029
POWER AMP.
A+10V
M12V
F805
2A/125V
F806
2A/125V
F804
5A/125V
F802
4A/125V
F801
4A/125V
+Vcc–Vcc
L-OUT
R-OUT F803
5A/125V
CLK
MAIN
AC POWER
SUPPLY CORD
REC/PLAY
VLOAD
RESET
SUB WOOFER
+B5 +B5
+B5
+B5
VDD VDD VDD
R-OUT
L-OUT
SP. DET.
-
SYSTEM
MUTE
CE DI DO
XL701
4.194304MHz
--
–Vcc
+Vcc
IC901
STK40271
POWER AMP.
BIAS
T1/T2
AVDD KEY
SW701-SW703
SW709-SW716
SW722-SW729
SW731-SW734
TO CD
SECTION
T.F.
IC701(1/2)
IX0398AW
SYSTEM MICROCOMPUTER
FL701
FL DISPLAY
8
13614 1520 29343553 5657582
3
2
1
7
127
28
2
1
15 13 11
9
1
7
3
2
6
5
1
15 7
8913 11
8
7
6541 7 9 10111213 151617 2021222324
31
33
34
35
36
37
38
39
4041424344454648495051525354555657
60
78
79
80
85
86
91
92
100
SO901
~~~
~

CD-BA300
– 20 –
Figure 20 SCHEMATIC DIAGRAM (1/10)
A
B
C
D
E
F
G
H
123456
• NOTES ON SCHEMATIC DIAGRAM can be found on page 39.
CD SIGNAL
CD MOTOR PWB-G
CD SERVO PWB-C
4
1
9
101112131415161718192021
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41
8765432
9
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
8
7
6
5
4
3
2
1
TP3
TP2 TP1
L
VCC4
M–
M+
VCC3
SPO VCC2
SLDO
VCC
STANDBY
VREF
MUTE
FD
SP–
SL– SL+
SP+
TR– TR+ FO+ FO– GND
GND
GND
FO–
FO–
LD
VR
PD
FO+
TR+
TR–
C
F
B
A
E
GND
PUIN
SL+
SL–
SP–
SP+
VREF
VCC
PICKUP UNIT
TR–
TR–
TR+
TR+
FO+ FO+
FO– PD
VR
LD
F
C
B
A
E
VCC
VREF
SLIDE
SPIN
+
+
–
–
PU-IN
1
2
3
4
5
6
1
2
3
4
5
6
5
3
6
2
7
1
4
5
3
6
2
7
1
4
5
3
6
2
7
1
4
5
3
6
2
7
1
4
4
1
3
6
5
2
4
1
3
6
5
2
M
M
4
8
5
2
1
7
3
6
4
8
5
2
1
7
3
6
4
8
5
2
1
7
3
6
4
8
5
2
1
7
3
6
+
+
–
–+
–
+
+
–
–
+
–
+
–
+
–
2
CNP1
CNSA1 CNSB1
R6
33K
R5
12K
R4
12K R3
33K
R1
12K
R2
12K
C1
47/25
C2
0.01
CNP2
CNSA2 CNSB2
C38
0.01
C39
100/10
R44
12K
C41
100/10
CNP3
CNSA3 CNSB3
R13
1K
R14
C12
100P
C11
0.22/50
C10
10/50
C9
100/10
C50
22P
(CH)
R12
330
C7
100P
R10
27K
C5
0.047(ML)
R11
10K
R9
3.3
Q1
KTA1266 GR
C4
0.001
C49
47/25
C3
47/25
C8
0.0047
C6
0.1
IC2
M63001FP
FOCUS/TRACKING/
SPIN/SLED DRIVER
C40
220/6.3
R7
47
M1
SPINDLE
MOTOR
M2
SLED
MOTOR
SW4
PICKUP IN