Sharp CDBA-3100 Service manual

CD-BA3100

SERVICE MANUAL

No. S2111CDBA3100

MINI COMPONENT SYSTEM

MODEL CD-BA3100

CD-BA3100 Mini Component System consisting of
CD-BA3100 (main unit) and CP-BA3100 (speaker system).

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

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

CD CHANGER MECHANISM MAIN BASE PARTS ASSEMBLING/ADJUSTING PROCEDURE................................... 16

BLOCK DIAGRAM ........................................................................................................................................................... 23

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 26

VOLTAGE ........................................................................................................................................................................ 45

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 46

TYPES OF TRANSISTOR AND LED............................................................................................................................... 46

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 47

TROUBLESHOOTING ..................................................................................................................................................... 48

FUNCTION TABLE OF IC................................................................................................................................................ 52

FL DISPLAY..................................................................................................................................................................... 58

REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)

SHARP CORPORATION

– 1 –

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

CD-BA3100

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

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 or that hardware is not lodged between the chassis
and other metal parts in the audio product.

2. Inspect all protective devices such as insulating materials,

cabinet, terminal board, adjustment and compartment covers
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

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.

VTVM

AC SCALE

1.5k ohms
10W

0.15 µ F

TO EXPOSED

TEST PROBE

METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (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

CD-BA3100

■ General

Power source AC 120 V, 60 Hz
Power consumption 164 W
Dimensions Width: 10-1/4" (260 mm)

Weight 19.0 lbs (8.6 kg)

■ Amplifier

Output power 100 watts minimum RMS per channel into 6 ohms from

Output terminals Speakers: 6 ohms

Input terminals Video/Auxiliary (audio signal): 500 mV/47 kohms

■ CD player

Type 6-disc multi-play compact disc player
Signal readout Non-contact, 3-beam semiconductor laser pickup
D/A converter
Frequency response 20 - 20,000 Hz
Dynamic range 90 dB (1 kHz)

Height: 13-5/16" (338 mm)
Depth: 14-13/16" (375 mm)

60 Hz to 20 kHz, 10 % total harmonic distortion
Subwoofer : 60 W/ch
(60 Hz - 200 Hz, 6 ohms, 10 % T.H.D.)

Main : 40 W/ch
(200 Hz - 20 kHz, 6 ohms, 10 % T.H.D.)

Headphones: 16-50 ohms (recommended; 32 ohms)

1-bit D/A converter

■ 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 0.3 % (WRMS)

CP-BA3100

Type 3-way type speaker system

2" (5 cm) Tweeter
5-1/4" (13 cm) Woofer
5-1/4" (13 cm) Subwoofer

Maximum input power (Total)
Rated input power (Total) 100 W
Impedance 6 ohms
Dimensions Width: 11" (280 mm)

Weight 10.6 lbs. (4.8 kg)/each

Specifications for this model are subject to change without
prior notice.

200 W

Height: 13" (330 mm)
Depth: 10-11/16" (272 mm)

– 2 –

CD-BA3100

■ Front panel

1.

Disc Trays

2.

Timer Set Indicator

3.

CD Direct Play Buttons

4.

CD Eject Buttons

5.

Memory/Set Button

6.

Equalizer Mode Select Button

7.

Volume Control

8.

Extra Bass/Demo Mode Button

9.

Tape 2 Record Pause Button

10.

Tape 2 Cassette Compartment

11.

Tape 1 Cassette Compartment

12.

CD Track Down or Fast Reverse, Tape 2
Rewind, Tuner Preset Down Button

13.

CD Track Up or Fast Forward, Tape 2
Fast Forward, Tuner Preset Up Button

14.

CD Button

15.

Tuner (Band) Button

16.

Tape (1 2) Button

17.

Video/Auxiliary Button

18.

Power On/Stand-by Button

19.

Dimmer Button

20.

Headphone Jack

21.

CD or Tape Stop Button (with Indicator)

22.

CD Play or Repeat,
Tape Play Button (with Indicator)

23.

Clock Button

24.

Timer/Sleep Button

25.

Tuning and Time Down Button

26.

Tuning and Time Up Button

NAMES OF PARTS

1
2

3

12

13 14 15 16 17

18
19

20

CD-BA3100

4

5
6
7
8
9

10
11

21
22

26252423

■ Display

01.

CD Music Schedule Indicators

02.

CD Play Indicator

03.

CD Pause Indicator

04.

Tape Play Indicator

05.

CD Repeat Indicator

06.

CD Indicators

07.

FM Stereo Mode Indicator

08.

FM Stereo Receiving Indicator

09.

Memory Indicator

10.

CD Random Play Indicator

11.

Tape 2 Record Indicator

12.

Extra Bass Indicator

13.

Timer Recording Indicator

14.

Timer Play Indicator

15.

Sleep Indicator

16.

Spectrum Analyzer/Volume Level Indicator

10
11

9

– 3 –

1

234 5 6 7 8

16

12
13

14
15

CD-BA3100

CD-BA3100

■ Rear panel

1.

FM/AM Loop Antenna Jack

2.

Video/Auxiliary (Audio Signal) Input Jacks

3.

Speaker Terminals

4.

AC Power Cord

1

2

3

4

■ Remote control

01.

Remote Control Transmitter

02.

CD Direct Play Buttons

03.

CD Pause Button

04.

CD Memory Button

05.

CD Track Down or 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 Track Up or 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

✱

✱

10
11
12

13
14

1

2

15
16

3
4

5

17
18

✱

19

6
7

20
21

8
9

22
23

24
25

Buttons with “✱” mark in the illustration can be operated on the remote control
only.
Other buttons can be operated both on the main unit and the remote control.

– 4 –

CD-BA3100

CP-BA3100

1.

Subwoofer

2.

Bass Reflex Duct

3.

Tweeter

4.

Woofer

5.

Speaker Wire for SUBWOOFER
Terminals

6.

Speaker Wire for MAIN Terminals

Left speaker

1

2

Right speaker

3

4

3

4

5

6

1

5

2

6

OPERATION MANUAL

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.

“AM 12:00”→ The 12-hour display will appear. (AM 12:00 - PM 11:59)
“AM 0:00” → The 12-hour display 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.

Refer to step 3 under “If trouble occurs”.

(

)

4

Press the TUNING/TIME ( or ) button to adjust the hour and
then press the MEMORY/SET button.

●

Press the
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
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.

To confirm the time display:

Press the CLOCK button.
The time display will appear for about 5 seconds.

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 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” on page 30 for details.]

2. Perform “Setting the Clock” from the beginning.

TUNING/TIME ( or )

TUNING/TIME ( or )

button once to advance the time by 1

button once to advance the time by 1

– 5 –

CD-BA3100

■

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

8" - 20'
(0.2 m - 6 m)

Remote sensor

Troubleshooting Chart

Many potential “problems” can be resolved by the owner without calling a service tech­nician. If something is wrong with this product, check the following before calling your
authorized SHARP dealer or service center.

■

General

● The clock is not on time.

●

When a button is pressed, the unit
does not respond.

● No sound is heard.

■

CD player

● 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.

■

Tuner

● Radio makes unusual noise con-

secutively.

Symptom

Symptom

Symptom

Possible cause

● Did a power failure occur?

● Reset the clock.

● Set this unit to the power stand-by mode

and then turn it back on.

● If the unit still malfunctions, reset it.

(Refer to step 3 under “If trouble occurs”.)

● Is the volume level set to “0”?

● Are the headphones connected?

● Are the speaker wires disconnected?

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?

Possible cause

● Is the unit placed near the TV or com-

puter?

● Is the FM/AM loop antenna placed prop-

erly?
Move the AC power cord away from the
antenna if located near.

■

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.

■

Remote control

Symptom

● The remote control does not op-

erate.

■

Condensation

Sudden temperature changes, storage or operation
in an extremely humid environment may cause con­densation inside the cabinet (CD pickup, tape heads,
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) in the unit until normal playback is possible
(about 1 hour). Wipe off any condensation on the trans­mitter with a soft cloth before operating the unit.

● Is the erase-protection tab removed?

● Is it a normal tape?

● (You cannot record on a metal or CrO

tape.)

● Is there any slack?

● Is the tape stretched?

● Are the capstans, pinch rollers, or heads

dirty?

● If a power failure occurs during playback,

the heads remain engaged with the tape.
Do not open the compartment forcibly.
Wait until electricity resumes.

● 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?

Possible cause

2

Possible cause

Troubleshooting Chart

■

If trouble occurs

When this product is subjected to strong external interference (mechanical shock, ex­cessive static electricity, abnormal supply 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 following:

➀ Press the ON/STAND-BY button to enter the power stand-by mode.

➁ While pressing down the MEMORY/SET 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.

– 6 –

CD-BA3100

Accessories

Accesorios

FM/AM loop antenna × 1

Antena de cuadro de FM/AM

×

1

Remote control × 1

Controlador remoto

×

1

1

1

1

2

3

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.

1

2

System Connections

Conexiones del sistema

3

3

FM antenna

Antena de FM

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

AM loop antenna

Antena de cuadro

de AM

– 7 –

CD-BA3100

Turning on Y our 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.

1

2

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.

Listening to a CD (CDs)

Audición de un disco CD (discos CD)

1

Press the CD button.

Pulse el botón CD.

2

Press the 1 button to open the disc

tray 1.

Pulse el botón 1 para abrir la bandeja

del disco 1.

3

Place a CD on the disc tray 1, label side

up.

Coloque un disco compacto en la bandeja

del disco 1, con el lado de la etiqueta arriba.

4

Press the 1 button to close the disc

tray 1.

Pulse el botón 1 para cerrar la bandeja

del disco 1.

5

You can place discs on the trays 2 - 6 by

following steps 2 - 4.

Podrá colocar discos en las bandejas 2 - 6

según los pasos 2 - 4.

6

Press the button to start playback.

Pulse el botón para iniciar la

reproducción.

5” (12 cm)

12 cm

3” (8 cm)

8 cm

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 a cassette into the TAPE 1 or T APE

2 cassette compartment with the side to

be played facing toward you.

Cargue un cassette en el compartimiento

de cassette de TAPE 1 o de T APE 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 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.

Pulse el botón TUNING/TIME ( o ) para

sintonizar la emisora deseada.

Cuando se pulse el botón

TUNING/TIME

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 to display the

“ST” indicator.

● “ ” will appear when an FM broadcast is in ste-

reo.

Para recibir una 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.

– 8 –

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.

CD-BA3100

(B2)x1
ø3x12mm

(A1)x1
ø3x10mm

Side Panel
(Right)

(B1)x2
ø3x12mm

(A1)x2
ø3x16mm

CD-BA3100

Top Cabinet

(B3)x2

(A1)x2
ø3x16mm

(B2)x1
ø3x12mm

CD-BA3100

STEP

REMOVAL

1 Top Cabinet 1. Screw ..................... (A1) x5 9-1

2 Side Panel 1. Screw ..................... (B1) x8 9-1

(Left/Right) 2. Screw ..................... (B2) x2

3. Hook....................... (B3) x2

3 Rear Panel with 1. Screw ..................... (C1) x2 9-2

Fan Motor 2. Screw ..................... (C2) x5

3. Screw ..................... (C3) x2

4. Socket .................... (C4) x1

4 CD Changer Unit 1. Socket .................... (D1) x2 9-2

2. Hook....................... (D2) x2

5 Main PWB 1. Screw ..................... (E1) x1 9-2

2. Socket .................... (E2) x3 9-3

3. Flat Cable .............. (E3) x1

6 Power Amp. PWB 1. Screw ..................... (F1) x6 10-1

2. Socket .................... (F2) x3

3. Flat Wire................. (F3) x1 10-1

4. PWB Holder ........... (F4) x2

7 Front Panel 1. Screw ..................... (G1) x2 10-1

2. Hook....................... (G2) x2

8 Eject Switch PWB 1. Screw ..................... (H1) x2 10-2

2. Socket..................... (H2) x1

9 Play Switch PWB 1. Screw ..................... (J1) x2 10-2

2. Socket .................... (J2) x1

10 Display PWB 1. Knob....................... (K1) x1 10-2

2. Screw ..................... (K2) x9

3. Flat Cable .............. (K3) x1

11

Headphones PWB

1. Screw ..................... (L1) x1 10-2

12 Tape Mechanism 1. Open the cassette holder. 10-2

2. Screw ..................... (M1) x6

PROCEDURE

FIGURE

9-3,10-1

(B1)x4
ø3x10mm

(D1)x1

(C1)x2
ø3x12mm

(C4)x1

Power Amp.
PWB

CD Servo
PWB

Rear
Panel

(C2)x5
ø3x10mm

(D2) x1

(E2)x2

Rear
Panel

Pull

Figure 9-1

Main PWB

Figure 9-2

(C3)x2
ø3x10mm

CD Changer
Unit

(D2)x1

Lug Wire

Side Panel
(Left)

(B1)x2
ø3x12mm

(D1)x1

(E1)x1
ø3x10mm

CD Servo
PWB

– 9 –

Power A PWB

(E3)x1

Power B PWB

(F2)x1

(F2)x1

Figure9-3

Main PWB

Main PWB

(E2)x1

Power Amp.
PWB

CD-BA3100

(F4)x1

Push

(F2)x1

Eject Switch
PWB

(H1)x2
ø3x10mm

(F1)x2

ø3x8mm

(F1)x2

ø3x10mm

(G2) x1

Pull

(F2)x1

(F1)x2

ø3x10mm

(G1)x2

ø3x8mm

Figure 10-1

(K3)x1

Headphones
PWB

(F3)x1

(F4)x1

Push

(G2) x1

Pull

Power Amp.
PWB

Display PWB

(K1)x1

(H2)x1

(J1)x2
ø3x10mm

(J2)x1

CD-BA3100 (CD CHANGER MECHANISM UNIT)

STEP REMOVAL

1 Top Cabinet 1. Screw ................. (A1) x4 9-1

2 Side Panel 1. Screw ................. (B1) x8 9-1

(Left/Right) 2. Screw ................. (B2) x2

3 Rear Panel with 1. Screw ................. (C1) x2 9-2

Fan Motor 2. Screw ................. (C2) x5

4 CD Changer Unit 1. Socket ................ (D1) x2 9-2

5 CD Servo PWB 1. Screw ................. (N1) x4 10-3

(Note) 2. Screw ................. (N2) x4

6 CD Mechanism 1. Screw ................. (P1) x4 10-3

PROCEDURE

3. Hook ................... (B3) x2

3. Screw ................. (C3) x2

4. Socket ................ (C4) x1

2. Hook ................... (D2) x2

3. Socket ................ (N3) x4

4. Flat Wire............. (N4) x2

FIGURE

Note:

After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to protect the optical pickup
from electrostatic damage.

CD Changer

Bracket

(K2)x9
ø3x10mm

(M1)x6
ø3x10mm

(L1)x1
ø3x10mm

Headphones
PWB

Figure 10-2

Play Switch
PWB

Open

Cassette
Holder

Tape
Mechanism

(N2)x4

ø3x10mm

(N3)x1

CD Servo PWB

(P1)x4

ø2.6x10mm

CD Mechanism

(N3)x2

(N4)x1

(N4)x1

(N3)x1

CD Changer

Mechanism

– 10 –

(N1)x4

ø3x14mm

Figure 10-3

CP-BA3100

STEP

REMOVAL PROCEDURE

1 Side Panel/ 1. Screw ..................... (A1) x4 11-1

Front Panel 2. Net.......................... (A2) x1

3. Catching Holder ..... (A3) x4

4. Screw ..................... (A4) x4

2 Subwoofer 1. Screw ..................... (B1) x4 11-2

3 Woofer 1. Screw ..................... (C1) x4 11-2

4 Tweeter 1. Screw ..................... (D1) x2 11-2

CD-BA3100

FIGURE

(A1)x4

ø4x20mm

(A3)x2

(A4)x2

ø4x20mm

(A2)x1

(A3)x2

(A4)x2

ø4x20mm

Figure 11-1

(B1)x4

ø4x16mm

Woofer

(C1)x4

ø4x16mm

(D1)x2

ø3x10mm

Tweeter

Sub Woofer

Figure 11-2

– 11 –

CD-BA3100

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 4 and 7 of the disassembly method to
remove the tape mechanism. (See page 9.)

How to remove the record/playback and erase
heads (TAPE 2) (See Fig. 12-1)

1. When you remove the screws (A1) x 2 pcs., the recording/
playback head and three-dimensional head of the erasing
head can be removed.

Erase Head

TAPE 2

Record/Playback
Head

How to remove the playback head (TAPE 1)
(See Fig. 12-2)

1. When you remove the screws (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.

(A1)x2
Ø2 x 9mm

(B1)x2
Ø2 x 9mm

Figure 12-1

TAPE 1

Figure 12-2

Playback
Head

How to remove the motor (See Fig. 12-5)

1. Remove the screws (F1) x 2 pcs., to remove the motor.

Motor

(F1) x2

Ø 2.6 x 5mm

– 12 –

TAPE 2

Pinch Roller
(C1)x1

FF/REW
Belt
(D2)x1

Main Belt
(D1)x1

Pull

<B>

Figure 12-3

Motor

Figure 12-4Figure 12-5

<A>

TAPE 2
Main Belt
(D1)x1

Pinch
Roller
Pawl

Motor

TAPE 1
Main Belt
(E1)x1

TAPE 1

FF/REW
Belt
(E2)x1

CD-BA3100

CD MECHANISM SECTION

Perform steps 1 to 5 of the disassembly method to remove the
CD mechanism. (See page 10.)

How to Remove the pickup (See Fig. 13-1)

1. Remove the screws (A1)x 2 pcs., to remove shaft (A2)x 1
pc.

2. Remove stop washer (A3)x 1 pc., to remove gear (A4)x 1 pc.

3. Remove the pickup.

Note:

After removing the connector for the optical pickup from the
connector, wrap the conductive aluminium foil around the
front end of connector remove to protect the optical pickup
from electrostatic damage.

CD CHANGER MECHANISM SECTION

Perform steps 1 to 5 of the disassembly method to remove the
CD changer mechanism. (See page 10.)

How to Remove the tray motor/main cam motor
(See Fig. 13-2)

1. Remove the screws (B1)x 4 pcs., to remove the CD Servo
PWB.

2. Remove the (1) front top plate, (2) changer box, left/right
and (3) disc trays 1~6. After that, disassemble as shown in
the figure.

3. Remove the screws (B2)x 4 pcs.

4. Remove the tray motor and main cam motor.

Note:

The parts of (1), (2) and (3) correspond to the drawing Nos.
117, 102, 103 and 108 to 113 of the CD change mechanism
disassembly drawing.
Remove the screws of 117, 102 and 103, and the parts of (1),
(2) and (3) will be ready for removal and the screws of the tray
motor and main cam motor will be visible.

CD
Mechanism

(2)Changer Box,
Right

(1)Front Top Plate

(2)Changer Box,
Left

(3)Disc Tray,1~6

(B2)x4

ø2.6x4mm

(A1) x1
ø2.6 x6mm

Stop Washer
(A3) x1

Pickup

Figure 13-1

CD Changer Mechanism

CD Servo
PWB

Main Cam Motor

Tray Motor

Figure 13-2

(A1) x1
ø2.6 x6mm

Gear
(A4) x1

Shaft
(A2) x1

ø3x10mm

(B1)x4

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

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

Tape 2

• Tape Speed

Test Tape

Normal MTT-111 Variable 3,000 ± 30 Hz Speaker
speed Resistor in Terminal

Adjusting

Point

motor. (Load

Specified

Value

TAPE MECHANISM

Variable Resistor in motor

Figure 13-3

– 13 –

Tape
Motor

Instrument

Connection

resistance:
6 ohms)

CD-BA3100
TUNER SECTION

fL: Low-range frequency
fH: High-range frequency

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage

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: TP302
*2. Input: Antenna Output: TP301

Frequency Frequency

Display

Setting/

Adjusting

Parts

FM BAND
COVERAGE fL

Instrument

Connection

CNP301

FM/AM LOOP

ANTENNA

IC301

T302

FM IF

T301

T351

AM IF

• FM RF

Signal generator: 1 kHz, 75 kHz dev., FM modulated

Test Stage

Frequency Frequency

Display

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)

Setting/

Adjusting

Point

*1. Input: Antenna Output: TP301
*2. Input: Antenna Output: Speaker terminal

MAIN PWB

T303

AM
TRACKING fL

AM BAND

L312

R316

FM RF

TP301

COVERAGE fL

T306

R357

TP302

Instrument

Connection

Figure 14-1 ADJUSTMENT POINTS

CD SECTION

• Adjustment

Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacing the pickup. Therefore, different PWBs and pickups
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.

Items adjusted automatically

(1) Offset adjustment (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) Gain adjustment (The gain is compensated inside the IC

so that the loop gain at the gain crossover frequency will
be 0 dB.)

* Focus gain adjustment
* Tracking gain adjustment

CD ERROR CODE DESCRIPTION

Error

[Pickup Mechanism Error]
ER-CD00 Pickup mechanism error
ER-CD01 Pu-in SW detection NG

[CD Changer Mechanism Error]
ER-CD10 Changer error
ER-CD11 Initial error

ER-CD20 Tray error

T

Stopped

CH1=500mV

CH2=200mV

DC 10:1

DC 10:1

T

FDO

1

TE

3

EFBL

2

Smoothing : ON CH1 : 0.000V
BW : FULL

CH2 : 0.000V
CH3 : 0.00V
CH4 : 0.00V

State Code

CH3=1V

DC 10:1

=Record Length=

Main : 100K
Zoom : 2k

Figure 14-2

1999/04/05 20:26:47

500ms/div

(500ms/div)

NORM:20kS/s

=Trigger==Filter= =Offset=
Mode : SINGLE
Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2µs

CH2
v/DIV
200mV

– 14 –

TEST MODE

During POWER OFF mode, push below each 2 keys and [POWER] key. Then go to each Test Mode.

KEY TEST MODE CONTENTS
[CD] [X-BASS] + [POWER] TEST 1 CD Test mode
[TAPE] [X-BASS] + [POWER] TEST 2 Tape test mode
[TUNER] [X-BASS] + [POWER] TEST 3 Tuner preset memory clear
[VIDEO/AUX] [X-BASS] + [POWER] TEST 4 Tuner preset for production
[MEMORY/SET] [X-BASS] + [POWER] TEST 5 All clear (reset)
[EQUALIZER] [X-BASS] + [POWER] TEST 6 Audio test
[ ] [DIMMER] + [POWER] TEST 7 Key and display test
[TUN UP] [DIMMER] + [POWER] TEST 8 RDS Test1
[TUN DOWN] [DIMMER] + [POWER] TEST 9 RDS Test2
[ ] [CD] + [POWER] TEST 10 CD Changer test
[ ] [CD] + [POWER] TEST 11 Production initialize for changer
[EQUALIZER] [TUN UP] + [POWER] TEST 12 Graphic equalizer test

CD 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

CD-BA3100

Enter test 1 mode key.

C D T E S T

OPEN/CLOSE operation is using manual.

>>, << >> buttons make pick's slide possible.

<<

<<PLAY>> key input.

Do TOC IL. Do normal play.
When these following key is input into PLAY key,
track number can be appoint directly.

<< 1>> key: Track 1
<< 2>> key: Track 3
<< 3>> key: Track 7
<<

4>> key: Track 11
<< 5>> key: Track 13
<< 6>> key: Track 15

<<MEMORY>> key input
a) Display "FOFF_XX"
b) Display "TOFF_XX"
c) Display "TBAL_XX"
d) Display "TGAN_XX"
e) Display "FGAN_XX"
f) Display "RFLS_XX"

<<MEMORY>> key input.

Laser ON.

<<MEMORY>> key input.

Tracking OFF play at that specific point.

<<MEMORY>> key input.

Tracking ON play from that specific point.

<<MEMORY>> key input.

<<STOP>> key input.

STOP

Display each step for 2 sec. XX: HEX VALUE
a) "FOFF_XX" Focus off set
b) "TOFF_XX" Tracking off set
c) "TBAL_XX" Tracking balance
d) "TGAN_XX" Tracking gain
e) "FGAN_XX" Focus gain
f ) "RFLS_XX" RF level shift

VOL –– Last memory
BAL –– CENTER
P.GEQ –– FLAT
X-BASS –– OFF

To cancel : Power OFF

– 15 –

a) Display "FOFF_XX"
b) Display "TOFF_XX"
c) Display "TBAL_XX"
d) Display "TGAN_XX"
e) Display "FGAN_XX"
f) Display "RFLS_XX"

Display every auto setting result for every 2 sec.

<<STOP>> key input.

Sliding the PICKUP with

>>, << >> button

<<
must only be in STOP mode.

STOP

CD-BA3100

CD CHANGER MECHANISM MAIN BASE PARTS ASSEMBLING/ADJUSTING
PROCEDURE

Work content

1. Motor assembly (x 2) mounting (screw x 4) 01/29 Fig.17

2. MT idle gear mounting (screw x 1) 25 Fig.17

3. MT system gear assembly 23/24/26/27 Fig.17

4. STB/tray drive system gear and others assembling/ 37/38/45/46 (53)/47/48 Fig.17
mounting (screw x 3)

5. Tray big gear assembly 31 Fig.17 Gear positioning

6. T.M SW PWB mounting (screw x 3) Fig.18

7. STB holder assembling 03 Fig.17

8. STB drive gear L/R assembly mounting (screw x 2) 11 (10)/12 (10) Fig.17

9. Tray joint gear R/tray drive gear R assembling 34/36 Fig.18 Gear positioning

10. Tray gear A/B assembling 32/33 Fig.18 Gear positioning

11. Lift gear B/C assembling 43/44 Fig.19 Gear positioning

12. MT idler gear F assembling, mode big gear 28/42 Fig.19
mounting (screw x 1)

13. Change box R mounting (screw x 4) 04 Fig.19

14. Lift gear A assembling 42 Fig.19 Gear positioning

15. Change box L assembly mounting (screw x 4) 02/30/35 Fig.20

16. Lift cam assembling (shaft inserting) 44 Fig.20 Gear positioning

17. STB holder height adjusting Fig.21 Check/adjustment

18. Top plate F/disc OB LEV. Mounting (screw x 6) 80 Fig.21

19. Trays 1 - 6 assembling 91/92/93/94/95/96 Fig.22

20. Top plate R mounting (screw x 6) ––

Applied part No.

Assembly fig. No.

Remarks

CD CHANGER MECHANISM PARTS LIST

No.

01 (101) MAIN BASE
02 (102) CHANGE BOX L
03 (147) STB HOLDER
04 (103) CHANGE BOX R

10 (119) STB DRIVE GEAR A
11 (120) STB DRIVE GEAR L
12 (122) STB DRIVE GEAR R
20 (149) STABILIZER FH

23 (141) MT IDLER GEAR A
24 (138) MT IDLER GEAR B
25 (137) MT IDLER GEAR C
26 (140) MT IDLER GEAR D
27 (139) MT IDLER GEAR E
28 (131) MT IDLER GEAR F
29 (MOB1,2) MOTOR GEAR
30 (143) TRAY DRIVE GEAR F
31 (134) TRAY BIG GEAR
32 (135) TRAY GEAR A
33 (136) TRAY GEAR B
34 (124) TRAY DRIVE GEAR R
35 (144) TRAY JOINT GEAR F
36 (125) TRAY JOINT GEAR R
37 (142) TRAY GEAR C
38 (130) TRAY IDLER GEAR

Part name

No.

40 (115) LIFT CAM
41 (126) MODE BIG GEAR
42 (127) LIFT GEAR A
43 (128) LIFT GEAR B
44 (129) LIFT GEAR C
45 (132) STB GEAR A
46 (104) STB GEAR B
47 (133-1) STB GEAR C
48 (133-3) STB GEAR D

50 (145) LIFT LEVER
51 (106) TRAY LOCK LEVER
52 (118) DISC OB LEVER
53 (105) STB GEAR ANG.

80 (117) TOP PLATE F
81 (114) TOP PLATE R

91 (108) TRAY 1
92 (109) TRAY 2
93 (110) TRAY 3
94 (111) TRAY 4
95 (112) TRAY 5
96 (113) TRAY 6

The number of ( ) is the number of the parts guide.

Part name

– 16 –

CD-BA3100

STB DRIVE GEAR R

STB DRIVE GEAR A

STB GEAR ANG.

STB GEAR B

STB GEAR C

10

STB DRIVE GEAR A

12

(ASS'Y)

53

46

47

10

STB GEAR A

48
STB GEAR D

45

03
STB HOLDER

29

26

23

27

25

24

23

01
MAIN BASE

29

Mark position

STB GEAR C

47

STB DRIVE GEAR L

11

(ASS'Y)

38
TRAY IDLER GEAR

37
TRAY GEAR C

31
TRAY BIG GEAR

After assembling TRAY BIG GEAR, turn it in the arrow direction.

TRAY BIG GEAR ASSEMBLING POSITION

11(/12) (10)
STB DRIVE GEAR L(/R)

(ASS'Y)

46
STB GEAR B

STB GEAR ANG.

53

STB GEAR A

45

38
TRAY IDLER GEAR

37
TRAY GEAR C

Figure 17

– 17 –

31
TRAY BIG GEAR

CD-BA3100

46

47

10

11

Direct the recess part
(trapezoidal side) of the axis
35 in this direction.

45

36
TRAY JOINT GEAR R

29

26

23

27

38

34
TRAY DRIVE GEAR R

24

25

37

29

23

31

M T SW PWB

Scale: 2 magnifications

Mark position

* This position becomes the
reference (stock) position
of the tray.

32
TRAY GEAR A

These holes must align.

It must not rotate in contact
with the peripheral (hatched)

33
TRAY
GEAR B

part of 31.

32

Scale: 2 magnifications

*2

TRAY BIG GEAR SET POSITION

*1: To position the axis part of 36, engage it with 38.
*2: When it is aligned as described in *1, the hatched part

*1

(low gear-height part of gear) will be positioned in this position.
Note: After positioning the tray big gear in the set position, engage these gears.

34
TRAY DRIVE GEAR R

36
TRAY JOINT GEAR R

TRAY GEAR B

33

33

32
TRAY GEAR A

These holes must align.

After assembling 32,
assemble 33.

Figure 18

– 18 –

MT IDLER GEAR F

42

LIFT GEAR A

28

CD-BA3100

Mark position

(Assemble the mode big gear in this position.)

04
CHANGE BOX R

Note:

To assemble the mode
big gear, incline it,
bring it into contact with
the circumference and
put the center hole into
position since the
hatched part of the main
base is overlapped with
the circumference.

32

53

46

10

47

11

Scale: 2 magnifications

(A)

45

(B)

37

36

38

34

41
MODE BIG GEAR

43

LIFT GEAR B

Scale: 2 magnifications

MODE BIG GEAR
LIFT GEAR A/B/C
ASSEMBLING POSITION

<Assembling method of lift gear>

After setting up the mode big gear in the
shown position, engage it with the STB gear A
(gear on the lower side) at the position (A),
and assemble them, turning it in the arrow direction
into the position (B). (The short tooth directs toward the
center of the mode big gear.)

42
LIFT GEAR A

33

44
LIFT GEAR C

Direct the short tooth
toward the center.

41
MODE BIG GEAR

LIFT GEAR B

Figure 19

– 19 –

43

44
LIFT GEAR C

CD-BA3100

37°

28

45

42

41

43 44

Scale: 2 magnifications

LIFT GEAR A

46

10

47

11

TRAY JOINT GEAR F
(CHANGE BOX L ASS'Y) ASSEMBLING POSITION
LIFT CAM

Assembling procedure

1. Turn the mode big gear approx. 37 degrees in the arrow direction.

2. Assemble the change box L ass'y.
Note: At this time, the tray joint gear F must be located in the position shown in figure.
Moreover, the gear must be engaged securely.

3. After assembly, return the mode big gear to the initial position.

4. Assemble the lift cam.
Note: At this time, the lift cam (No.40) must be located in the position shown in figure 20.

40

LIFT CAM

Mark position

32

33

30
TRAY DRIVE GEAR F

02

CHANGE BOX L
Direct the recess part (trapezoidal side)
of the axis 35 in this direction.

35
TRAY JOINT GEAR F

*1

40
LIFT CAM

*2

30
TRAY DRIVE GEAR F

35
TRAY JOINT GEAR F

*1: To position the axis part
of 35, engage it with 33.
*2: When it is aligned as
described in *1, the hatched part
(low gear-height part of gear)

will be positioned as shown.
Since this gear engagement is not
visually checked, verify that it does
not float when the gear box L is installed.

Figure 20

– 20 –

Scale: 2 magnifications

During assembly, make the
O part visible in this direction.

Note: Among 4 ribs on the
circumference, one rib alone
is provided with O.

30
TRAY DRIVE GEAR F

35
TRAY JOINT GEAR F

80
TOP PLATE F

37°

Mark position

CD-BA3100

10

When the height of
STB holder is low,

(Increase the clearance.)

Bend this part.

Scale: 2 magnifications

46

47

LIFT GEAR A

42

45

11

When the height of
STB holder is high,

(Decrease the clearance.)

240
OS LEVER

Bend this part to adjust the height of the STB holder.

Details

32

33

30

35

41

43

40

44

STB HOLDER HEIGHT ADJUSTING METHOD

Adjusting procedure

1. Turn the mode big gear approx. 37 degrees in the arrow direction.

2. Viewing from the front side of the mechanism, verify that the guide ribs
(CHANGE BOX L/R and STB HOLDER) of tray are as tall as each other.

3. If they are not, bend the lever for adjustment. (Refer to the details.)
Note: Also apply the same adjustment on the R side.

80
TOP PLATE F

Height of the rib

40

Figure 21

– 21 –

30

35

CD-BA3100

LIFT GEAR A

Mark position

Be sure to assemble the tray into this position.

91~96
TRAY1~TRAY6

Insert it along the guide of

42

the change box.

32

45

46

10

47

11

Tray installing method: (After adjusting the height of the STB holder)

1. Turn the mode big gear to the mark position to lower the STB holder to the bottom area.

2. From the front side, install the tray. (Securely insert it to the lock position.)

41

43

33

30

40

44

35

40

TRAY No.1~6

Rear surface: Stamped.
Note: During insertion,
Do not accidentally rearrange
tray numbers.

TRAY 6

TRAY 5

Rear side

TRAY 4

TRAY 3

TRAY 2

TRAY 1

30

35

Figure 22

Measure to be taken when a disc cannot be removed due to a mechanism trouble

First, remove the mechanism unit section from the set, and check for the state of the disc.
(Remove the top plate R if necessary.)
<State of the disc>
(1) When the disc is in the normal PLAY (chucking) position -> Try to eject the disc by turning the mode big gear/tray big gear

manually.
* At this time, be sure to adjust the tray's position (height).
(2) When the disc is in the normal STOCK position -> Try to eject the disc by turning the tray big gear manually.
* At this time, be sure to adjust the tray's position (height).
(3) When the disc is not in the normal position -> The tray or disc is not in the normal position. (The tray or disc may catch

somewhere.)

Remove the TOP PLATE F/DISC OB lever.
Unlock the tray lock lever and pull out the tray which is not caught.
Move the caught tray or disc and remove the disc.

In case of (1) and (2), the mechanism is normal (defective circuit parts, etc.). However, it may stop somewhere.
This is the reason why you should try to turn the tray big gear first.
In case of (3), either of the big gears does not turn.

– 22 –