Sharp CDBA-1500-H Service manual

CD-BA1500H

SERVICE MANUAL

No. S3018CDBA1500

CD-BA1500H

CD-BA1500H Mini Component System consisting of
CD-BA1500H (mani unit) and CP-BA1500H (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

SAFETY PRECAUTION FOR SERVICE MANUAL ............................................................................................................2

IMPORTANT SERVICE NOTES (FOR U.K. ONLY) .......................................................................................................... 2

SPECIFICATIONS ............................................................................................................................................................. 3

NAMES OF PARTS ........................................................................................................................................................... 4

OPERATION MANUAL ...................................................................................................................................................... 6

QUICK GUIDE (FOR U.K. ONLY).......................................................................................................................................7

DISASSEMBLY.................................................................................................................................................................. 9

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 12

ADJUSTMENT ................................................................................................................................................................. 13

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 20

TYPES OF TRANSISTOR AND LED................................................................................................................................20

BLOCK DIAGRAM ........................................................................................................................................................... 21

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD..............................................................................................24

VOLTAGE ........................................................................................................................................................................ 41

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 42

TROUBLESHOOTING ..................................................................................................................................................... 43

FUNCTION TABLE OF IC................................................................................................................................................ 47

FL DISPLAY......................................................................................................................................................................53

REPLACEMENT PARTS LIST/EXPLODED VIEW
PACKING METHOD (FOR U.K. 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-BA1500H

CHASSIS SCREW

SAFETY PRECAUTION FOR

SERVICE MANUAL

Precaution to be taken when replacing and servicing the
Laser Pickup.

The AEL (Accessible Emission Level) of Laser Power Output
for this model is specified to be lower than Class I Requirements.
However, the following precautions must be observed during
servicing to protect your eyes against exposure to the Laser
beam.

(1) When the cabinet has been removed, the power is turned

on without a compact disc, and the Pickup is on a position
outer than the lead-in position, the Laser will light for several
seconds to detect a disc. Do not look into the Pickup Lens.

(2) The Laser Power Output of the Pickup inside the unit and

replacement service parts have already been adjusted prior
to shipping.

(3) No adjustment to the Laser Power should be attempted

when replacing or servicing the Pickup.

(4) Under no circumstances look directly into the Pickup Lens

at any time.

(5) CAUTION - Use of controls or adjustments, or performance

of procedures other than those specified herein may result
in hazardous radiation exposure.

(For U.K.)

LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

Laser Diode Properties

Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW

CAUTION-INVISIBLE LASER RADIA TION WHEN OPEN. DO NO T STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTR UMENTS.

VARNING-OSYNLIG LASERSTRALNING N AR DENNA DEL AR OPPNAD. STIRRA
EJ IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT .

ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.

VAR O! AVA TTAESSA OLET ALTTIINA NAKYMA TON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SIT A OPTISEN LAITTEEN LAPI.

VARNING-OSYNLIG LASERSTRALNING N AR DENNA DEL AR OPPNAD.
STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT
INSTRUMENT.

ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE
INN I STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.

(For Europe)

CAUTION

Use of controls, adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.

As the laser beam used in this compact disc player is harmful
to the eyes, do not attempt to disassemble the cabinet. Refer

IMPORTANT SERVICE NOTES (FOR U.K. ONLY)

Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.

Set name set value
Withstanding Voltage Tester
Test voltage 4,240 VPEAK

3,000 VRMS
Set time 6 secs
Set current(Cutoff current) 4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.

NG: The “NG” lamp lights and the buzzor sounds.

VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN
TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.

VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT
ÄN I DENNA BRUKSANVISNING SPECIFICERAS. KAN
ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG
LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR
LASERKLASS 1.

WITHSTANDING
VOLTAGE TESTER

AC

+

OUT

-

SHORT-CIRCUIT
AC POWER
SUPPLY CORD

PROBE

UNIT

CONNECT THE PROBE
TO GND OF CHASSIS

SCREW

– 2 –

CD-BA1500H

CD-BA1500H

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

SPECIFICATIONS

General

Power source: AC 230 V, 50 Hz
Power consumption: 95 W
Dimensions: Width; 270 mm (10-5/8")

Height; 330 mm (13")
Depth; 375 mm (14-6/8")

Weight: 6.4 kg (14.0 lbs.)

Amplifier section

Output power: PMPO; 320 W (total)
(Except for U.K.) MPO; 160 W (80 W + 80 W)

(DIN 45 324)
RMS; 100 W (50 W + 50 W)
(DIN 45 324)
RMS; 74 W (37 W + 37 W)
(DIN 45 500)

Output power: RMS; 100 W (50 W + 50 W)
(For U.K.) (10 % T.H.D.)

RMS; 74 W (37 W + 37 W)
(0.9 % T.H.D.)

Output terminals: Speakers; 6 ohms

Headphones; 16-50 ohms
(recommended; 32 ohms)
CD digital output (optical)

Input terminal: Video/Auxiliary (audio signal);

500 mV/47 kohms

Compact disc player section

Type: 3-disc multi-play compact disc

player

Signal readout: Non-contact, 3-beam semi-

conductor laser pickup

D/A Converter: 1-bit D/A converter
Frequency response: 20 - 20,000 Hz
Dynamic range: 90 dB (1 kHz)

Cassette deck section

Type: Compact cassette tape
Frequency response: 50 - 14,000 Hz (Normal tape)
Motor: DC motor with electronic

governor x 1

Signal/noise ratio: 55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/

playback)

Bias and erasure system: AC
Tape speed: 4.76 cm/sec. (1-7/8 ips.)
Wow and flutter: 0.35 % (DIN 45 511)
(Except for U.K.)
Wow and flutter: 0.3 % (WRMS)
(For U.K.)
Heads: TAPE-1: Playback x 1

TAPE-2: Record/playback x 1
Erase x 1

CP-BA1500H

Speaker section

Type: 3-way type [10 cm (4")

woofer x 2 and 5 cm (2")
tweeter]

Maximum input power: 100 W
Rated input power: 50 W
Impedance: 6 ohms
Dimensions: Width; 231.5 mm (9-1/8")

Height; 330 mm (13")
Depth; 210 mm (8-1/4")

Weight: 3.1 kg (6.8 lbs.)/each

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

Tuner section

Frequency range: FM; 87.5 - 108 MHz

AM; 522 - 1,620 kHz

– 3 –

CD-BA1500H

CD-BA1500H

■ Front panel

11.

(CD) Disc Tray

12.

Spectrum Analyzer/Volume Level Indicator

13.

Extra Bass Indicator

14.

RDS Indicator

15.

Programme Type Indicator

16.

Traffic Information Indicator

17.

FM Stereo Mode Indicator

18.

FM Stereo Indicator

19.

Dynamic PTY Indicator

10.

EON Indicator

11.

Traffic Announcement Indicator

12.

Traffic Programme Indicator

13.

(CD) Repeat Indicator

14.

Sleep Indicator

15.

(CD/TUNER) Memory Indicator

16.

(TAPE 2) Record Indicator

17.

(CD) Disc Number Indicators

18.

Timer Play Indicator

19.

(CD) Pause Indicator

20.

(CD) Play Indicator

21.

Timer Record Indicator

22.

(TAPE) Play Indicator

NAMES OF PARTS

5

36

4

7

9

10

11

8

13

1

2

12

14

15

16

17

18

23.

(TUNER) Programme Type/Traffic Information
Search Button

24.

(TUNER) EON Button

25.

(TUNER) ASPM Button

26.

(TUNER) Display Mode Selector Button

27.

(TUNER) Station Selector Button

28.

(CD) Track Up/Cue Button

3

(TUNER) Preset Up Button

3

(TAPE 2) Fast Forward Button

29.

Timer Set Indicator

30.

On/Stand-by Button

31.

Clock Button

32.

Timer/Sleep Button

33.

Function Selector Buttons

34.

Dimmer Button

35.

Volume Up/Down Buttons

36.

Equalizer Mode Selector Button

37.

Extra Bass/Demo Mode Button

38.

(CD) Open/Close Button

39.

Headphone Socket

40.

Tuning and Time Up/Down Buttons

41.

Memory/Set Button

42.

(CD) Track Down/Review Button

3

(TUNER) Preset Down Button

3

(TAPE 2) Rewind Button

43.

(CD/TAPE) Stop Button

44.

(CD) Play/Repeat Button

3

(TAPE) Play Button

45.

(TAPE 2) Record Pause Button

46.

(CD) Disc Skip Button

2

23

29
30

31
32

33

39 42

40 41

47

2019

43

21

26 282524

44

48

22

2

27

45 46

34
35

36

37
38

47.

(TAPE 1) Cassette Compartment

48.

(TAPE 2) Cassette Compartment

– 4 –

■ Rear panel

11.

AC Power Input Socket

12.

CD Digital Output Socket

13.

FM 75 Ohms Aerial Socket

14.

AM Loop Aerial Socket

15.

Video/Auxiliary (Audio Signal) Input Sockets

16.

Speaker Terminals

CP-BA1500H

■ Speaker

11.

Tweeter

12.

Bass Reflex Duct

13.

Woofers

14.

Speaker Wire

CD-BA1500H

2

3
4

5

6

1

1

3

CD-BA1500H

■ Remote control

11.

Remote Control Transmitter LED

● CD control section

12.

Disc Number Select Buttons

13.

Memory Button

14.

Pause Button

15.

Clear Button

16.

Track Down/Review Button

17.

Track Up/Cue Button

18.

Disc Skip Button

19.

Play/Repeat Button

10.

Stop Button

11.

Random Button

● Tuner control section

12.

Preset Up/Down Buttons

● Tape control section

13.

(TAPE 1) Play Button

14.

(TAPE 2) Record Pause Button

15.

(TAPE 1/2) Stop Button

16.

(TAPE 2) Play Button

17.

(TAPE 2) Rewind Button

18.

(TAPE 2) Fast Forward Button

● Common section

19.

Equalizer Mode Selector Button

20.

Function Selector Buttons

21.

On/Stand-by Button

22.

Extra Bass Button

23.

Volume Up/Down Buttons

2

4

1

2
3

4
5
6
7

8
9

10
11

12

13 14 15 16 17 18

19
20

21

23

22

– 5 –

CD-BA1500H

SETTING THE CLOCK

ON/

STAND-BY

CLOCK

MEMORY/SET

TUNING/

TIME

( )

AM 12:00AM 0:000:00

2

3

4

7

6

5

8

9

In this example, the clock is set for the 24-hour (0:00) system.

1

Press the ON/STAND-BY button to enter the stand-by mode.2Press the CLOCK button.3Within 5 seconds, press the MEMORY/SET button.4Press the TUNING/TIME (

or ) button to select the time

display mode.

"0:00" → The 24-ho ur display w ill appear.

(0:00 - 23:59)

"AM 0:00" → The 12-hour display will appear.

(AM 0:00 - PM 11:59)

"AM 12:00" → The 12-hour display will appear.

(AM 12:00 - PM 11:59)

● Note that this can only be set when the unit is first installed

or it has been reset (see page 28).

5

Press the MEMORY/SET button.

6

Press the TUNING/TIME (

or

) button to adjust the hour.

● 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 auto-

matically to "PM".

7

Press the MEMORY/SET button.8Press the TUNING/TIME (

or

) button to adjust the

minutes.

● 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 setting will not advance even if minutes advance

from "59" to "00".

9

Press the MEMORY/SET button.

● The clock starts operating from "0" second.

(Seconds are not displayed.)

And then the clock display will disappear after a few seconds.

To see the time display:

Press the CLOCK button.

● The time display will appear for about 5 seconds.

Note:

● The clock display will flash on and off at the push of the

CLOCK button when the AC power supply is restored after a

power failure occurs or after the AC power lead is discon-

nected.

If this happens, follow the procedure below to change the clock

time.

To change the clock time:

①

Press the CLOCK button.②Within 5 seconds, press the MEMORY/SET button.

③

Perform steps 6 - 9 above.

To change the time display mode:

①

Perform steps 1 - 2 in the section "RESETTING THE MICRO-

COMPUTER", on page 28.

②

Perform steps 1 - 9 above.

(Main unit operation)

RESETTING THE MICROCOMPUTER

Reset the microcomputer under the following conditions:

● To erase all of the stored memor y contents (clock and timer

settings, and tuner and CD presets).

● If the display is not correct.

● If the operation is not correct.

1

Press the ON/STAND-BY button to enter the stand-by mode.2Whilst pressing down the

button and the X-BASS/DEMO

button, hold down the ON/STAND-BY button for at least 1

second.

● "CLEAR AL" will appear.

Caution:

● The operation explained above will erase all data stored in

memory including clock and timer settings, and tuner and CD

presets.

X-BASS/

DEMO

ON/

STAND-BY

PREPARATION FOR USE

15

15

Notes concerning use:

● Replace the batteries if the operating distance is reduced or if

the operation becomes erratic.

● Periodically clean the transmitter LED on the remote control

and the sensor on the main unit with a soft cloth.

● Exposing the sensor on the main unit to strong light may in-

terfere with operation. Change the lighting or the direction of

the unit.

● Keep the remote control away from moisture, excessive heat,

shock, and vibrations.

0.2 m - 6 m

(8" - 20’)

OPERATION MANUAL

– 6 –

MINI COMPONENT SYSTEM

Quick Guide CD-BA1500H

Refer to the operation manual for details.

Check the supplied accessories

Putting batteries into the remote control

Placing the system

10 cm (4")

10 cm (4")

10 cm (4")

10 cm (4")

●

2 "AA" size batteries

(UM/SUM-3, R6, HP-7 or similar)

●

Batteries are not included.

1

Remove the battery cover .

2

Insert the batteries.

3

Replace the battery cover

.

1

2

3

AM loop aerial

× 1

AC power lead × 1

(For U.K.)

FM aerial

× 1

Remote control

× 1

AC power lead × 1

(For Europe)

Left speaker

Connections

4

AM loop

aerial

AC 230 V, 50 Hz

(For U.K.)

1

Connect the AM and FM aerials.

2

Connect the speaker system.

3

Connect the AC power lead.

Red

Black

Right speaker

FM aerial

1

2

AC 230 V, 50 Hz

(For Europe)

QUICK GUIDE (FOR U.K. ONLY)

CD-BA1500H

– 7 –

CD-BA1500H

● Resetting the microcomputer

1

Press the ON/STAND-BY button to enter the stand-by

mode.

2Whilst pressing down the button and the X-BASS/

DEMO button, hold down the

ON/STAND-BY button for

at least 1 second.

●"CLEAR AL" will appear.

Caution:

●

The operation explained above will er ase all data stored

in memory including clock and timer settings, and tuner

and CD presets.

If 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 in-

correctly, it may malfunction or the display may not functi-

on correctly. If such a problem occurs, do the following:

● CD pickup cleaning

1

Press the ON/STAND-BY button to tur n the power on.2Press the CD button and load the desired disc.

3

Load a cassette into the TAPE 2 cassette compartment. 4Press the REC P A USE button.

5

Press the button.

Recording from CDs

8

2
2

1,2

5

4

1

2

Clean the dust or stain on the CD pickup lens

using

a commercial cleaning disc (brush type).

Cleaning disc

TAPE 2

PUSH

EJECT

3

using

7

Listening to a tape

1Press the ON/STAND-BY button to turn the power on.

4Press the TAPE (1 2) button to select the TAPE 1

or TAPE 2.

3

Load the cassette into the TAPE 1 or TAPE 2 cassette

compartment.

2Open the cassette door by pushing the area marked

"PUSH EJECT".

5 Press the button to start playback.

1Press the ON/STAND-BY button to turn the power on.

2Press the TUNER (BAND) button to select FM ST, FM

or AM.

4Adjust the sound volume using the VOLUME buttons.

6Adjust the sound volume using the VOLUME buttons.

3

Press the TUNING/TIME ( or ) button to tune

into the desired station.

1

45

2

1

2

3

1

4

5

6

3,657

Listening to the radio

6

1Press the ON/STAND-BY button to turn the power on.

2

Press the CD button.

3Press the OPEN/CLOSE button to open the disc tra y .

4Place the CD(s) on the disc tray, label side up.

5When loading a third disc, press the DISC SKIP button

to turn the disc tray, then place the CD in the open po-

sition.

6Press the OPEN/CLOSE button to close the disc tray.

5

8

7Press the button.

8Adjust the sound volume using the VOLUME buttons.

4

●

And then, close the cassette door completely until it is locked.

Listening to a CD

12 cm (5")

8 cm (3")

T APE 1 T APE 2

PUSH

EJECT

PUSH

EJECT

33

2

2

– 8 –

(B1)x4
ø3x12mm

(B1)x2
ø3x10mm

Rear
Panel

(B1)x2
ø3x10mm

Side Panel
(Right)

Side Panel
(Left)

(A1)x2
ø3x12mm

(A1)x2
ø3x12mm

Top Cabinet

Front Panel

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-BA1500H

STEP REMOVAL

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

2. Screw ..................... (C1) x1

3. Hook....................... (C2) x3

4. Hook....................... (C3) x2

5. Socket .................... (C4) x3

4 Rear Panel 1. Screw ..................... (D1) x6 9-2

5 Main PWB 1. Screw ..................... (E1) x5 9-2

2. Socket .................... (E2) x6 10-2

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

4. Lug Wire................. (E4) x1

5. Flat Wire................. (E5) x1

6 RDS PWB 1. Socket .................... (F2) x1 10-2

7 Power PWB 1. Socket .................... (G1) x1 10-2

8 Front Panel 1. Screw ..................... (H1) x2 10-2

9 Display PWB 1. Screw .....................

10 Tape Mechanism 1. Open the cassette holder. 10-3

11

Headphones PWB

12 Turntable 1. Hook....................... (M1) x2 10-4

13 Disc Tray 1.

14 CD Servo PWB 1. Screw ..................... (P1) x1 10-6

(Note 2) 2. Hook....................... (P2) x3

15 CD Mechanism 1. Hook....................... (R1) x2 11-1

2. Flat Wire................. (G2) x1

3. Screw ..................... (G3) x2

2. Flat Cable............... (J2) x1

2. Screw...................... (K1) x6

1. Screw ..................... (L1) x1 10-3

2. Cover ..................... (M2) x1

2.

3.

3. Socket .................... (P3) x4

2. Hook....................... (R2) x3

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.

3. After that, push forward the CD slide holder.

PROCEDURE

open the disc tray, take out the
CD cover, and close. (Note 1)

(J1) x15

Turn fully the lock lever in the
arrow direction.
While holding the lock lever,rotate
the cam gear until the cam gear
rib engages with the clamp lever.
Push the slide holder backward to
engage the claw with the groove
and remove it in the direction

of the arrow. ..............

(N1) x6

(Fig. 10-1)

FIGURE

10-3

9-3

10-1

10-5

CD-BA1500H

CD-BA1500H

Figure 9-1

CD Servo PWB

(C4)x3

(C3) x1

Pull

Rear
Panel

(C1)x1
ø3x12mm

(D1)x6
ø3x12mm

Main PWB

Figure 9-2

Figure 9-3

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 to protect the optical pickup from
electrostatic 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.

– 9 –

CD Tray Cover

1

(E1)x3
ø3x10mm

Lock Lever

(C2) x3

1

2

CD Player
Unit

(C3)x1

CD-BA1500H

Clamp Lever

(M2) x1

Turntable

(E2)x1

(G3)x1
ø3x10mm

Power PWB

(G3)x1
ø3x10mm

(E2)x1

(E3)x1

(E4)x1

Figure 10-1

(E2)x2

(J2)x1

Figure 10-2

(E1)x2
ø3x10mm

(J5)x1

Cam Gear Rib

Front Panel

(E5)x1

Headphones
PWB

Main PWB

(F2)x1

(H1)x2
ø3x10mm

RDS PWB

(M1) x2

1

Disc Tray

CD Player Unit

Figure 10-4

(N1) x3

2

Disc Tray

(N1) x3

CD Player Unit

(J1)x15
ø3x10mm

Tape
Mechanism

(K1)x6
ø3x10mm

(L1)x1
ø3x10mm

(J2)x1

Figure 10-3

Front Panel

Display PWB

Open

Cassette
Holder(Lift/Right)

Headphones PWB

– 10 –

(P2)x3

(P3) x2

(P3)x2

Figure 10-5

(P1)x1
ø3x8mm

CD Servo

PWB

Figure 10-6

Disc Tray

CD-BA1500H

CD

(R2) x3

Mechanism

(R1) x1

(R1) x1

Disc Tray

Figure 11-1

CP-BA1500H

STEP REMOVAL

1 Woofer 1. Front Panel ............ (A1) x1 11-2

2 2. Screw ..................... (A2) x8 11-3

2 Tweeter 1. Screw ..................... (B1) x2 11-3

PROCEDURE

FIGURE

(A1) x1

Driver should
be pried away
from Speaker
Box.

Speaker Box

Screw
Driver

(A2)x4
ø4x16mm

(A2)x4
ø4x16mm

Woofer

Speaker Box

Woofer

Tweeter

(B1)x2
ø3x10mm

Figure 11-3

Figure 11-2

– 11 –

CD-BA1500H

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE MECHANISM SECTION

Perform steps 1 to 5, 8 and 10 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. Carefully remove the record/playback head and erase head
screws (A1) x 2 pcs.

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

1. Carefully remove the playback head screws (B1) x 2 pcs.

Erase Head

(A1)x2
Ø2 x 9mm

TAPE2

Figure 12-1

Record/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.,
upwards.

Note:

When installing the pinch roller, pay attention to the spring
mounting position.

How to remove the belt (Tape 1) (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 2) (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.

(B1)x2
Ø2 x 9mm

TAPE1

Figure 12-2

Playback
Head

(F1) x2

Ø 2.6 x 5mm

Motor

– 12 –

TAPE2

Pinch Roller
(C1)x1

FF/REW
Belt
(E2)x1

Main Belt
(E1)x1

Figure 12-3

Motor

Main Belt
(D1)x1

Figure 12-4Figure 12-5

<A>

TAPE2
Main Belt
(E1)x1

Motor

TAPE1
Main Belt
(D1)x1

TAPE1

FF/REW
Belt
(D2)x1

CD MECHANISM SECTION

TAPE MECHANISM

Motor

Variable Resistor in motor

Perform steps 1, 2, 3, 12, 13, 14 and 15 of the disassembly
method to remove the CD mechanism.

How to remove the T/T Up/Down motor
(See Fig. 13-1)

1. Bend the hooks (A1) x 5 pcs., to remove the T/T Up/Down
motor.

2. Remove the Drive belt (A2) x 1 pc.

Disc Tray

(A1)x2

CD-BA1500H

T/T Up/Down Motor

(A1)x3

How to remove the pickup (See Fig. 13-2)

1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2).

2. Remove the stop washer (B3) x 1 pc., to remove the gear
(B4).

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 to protect the optical pickup from
electrostatic damage.

(B1) x2
ø2.6 x6mm

Shaft
(B2) x1

Figure 13-1

Stop Washer
(B3) x1

Gear
(B4) x1

Pulley

Motor

Drive Belt
(A2) x1

Pickup

CD Mechanism

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter

Play: TW-2111 Tape 1: Over 80 g

• Torque Check

Torque Meter

Tape 1

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 2: Over 80 g

Specified Value

Tape 2

Figure 13-2

• Tape Speed

Test Tape

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

– 13 –

Adjusting

Point

motor. (Load

Figure 13-3

Specified

Value

Instrument

Connection

resistance:
6 ohms)

CD-BA1500H
TUNER SECTION

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

• AM IF/RF

Signal generator: 400 Hz, 30%, AM modulated

Test Stage Frequency

AM IF 450 kHz 1,620 kHz T351 *1
AM Band — 522 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

Display

Setting/

Adjusting

Parts

R381

TP301

Instrument

Connection

CNP302

AM LOOP

SO301

ANTENNA

1

FE301

T351

AM IF

• FM
Notes:

1: Description of the "FM IF Adjustment" is not carried on this

Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.

2: The parts in the FM front end section are prepared in a

complete unit, so you can't obtain each part individually

MAIN PWB

T303

AM
TRACKING fL

T306

AM BAND
COVERAGE fL

TP302

R357

Figure 14-1 ADJUSTMENT POINT

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 12-2

EFBL)

(3) Gain adjustment (The gain is compensated inside the IC

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

* Focus gain adjustment
* Tracking gain adjustment

CD ERROR CODE DESCRIPTION

Error State Code

0001 Cannot detect Pickup-in SW
0002 DSP access error

0101 Open/Close SW Low → High not functioning
0103 Open/Close SW High → Low not functioning

0201 Open/Close SW Low → High not functioning
0203 Open/Close SW High → Low not functioning

0302 Pickup-in SW is not detected
0306 During Disc 1 search, Open/Close SW or Clamp SW

0307 Clamp SW Low → High not functioning
0308 Clamp SW High → Low not functioning

[Servo System Error]

[Error during close operation]

[Error during open operation]

[Error during skip operation]

or Disc SW do not change to low.

T

T

1

3

Stopped

FDO

TE

CH1=500mV

DC 10:1

CH2=200mV

DC 10:1

CH3=1V

DC 10:1

1999/04/05 20:26:47

500ms/div

(500ms/div)

NORM:20kS/s

– 14 –

EFBL

2

Smoothing : ON CH1 : 0.000V
BW : FULL

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

Figure 14-2

=Record Length=

Main : 100K
Zoom : 2k

CH2
v/DIV
200mV

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

TEST MODE

·Setting the test mode
Any one of test mode can be set by pressing several keys as fallows.
<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.

CD-BA1500H

IL isn't done

<<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 4
<< 2>> key: Track 9
<< 3>> key: Track 15

<<STOP>> key input.

STOP

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

<<MEMORY>> key input.

Laser ON.

<<MEMORY>> key input.

Tracking OFF play at that
specific point.

<<MEMORY>> key input.

Tracking ON play at that
specific point.

<<STOP>> key input.

STOP

Sliding the PICKUP with
<< >>, << >> button
must only be in STOP mode.

To cancel : Power OFF

– 15 –

CD-BA1500H

Yes

Yes

Comparing freg.

same or not?

Between current receiving

frequency and (already)

previously memorized

frequency.

Hold down the ASPM button for 3 more second.

No operate. After displayed “END”. Return to

previous station.

“ASPM” blinks in the display.

Begin to scan start 87.50 → 108.00 MHz

Preset CH memory full over?

SD (TUNE) DET out OK?

Yes

No

No

No

No

No

If count 1st OK?

Yes

If count 2nd OK?

Yes

RDS signal or not? PI—identify

Yes

Comparing PI cord

same or not?

between current receiving

PI and before PI which is

already memorized by

ASPM on this time.

Yes

Yes

No

Comparing freg.

same or not?

between current receiving

frequency and (already)

previouslymemorized

frequency.

No

Memorized to the lowest vacant

preset channel.

No

Memorized to the lowest vacant

preset channel.

Compare the field

strength of current receiving

signal.

Is receiving signal stronger than

signal which has same PI cord

and is already memorized to

preset memory ahead of this

receiving time?

No effect

No effect

No effect

Effect

Pass

No effect

Pass

No effect

Pass

No effect

Pass

No effect

Displayed the TTL quantity of memorized

stations by ASPM operation on this time.

And return to the previous

receiving freq. automatically.

Begin to ASPM SCAN from the next

CH-SPAN again.

Repeat and continue with same format

ASPM operation untill 108 MHz.

After reached 108 MHz, displayed the TTL

quantity of memorized stations.

And return to the previous receiving freq.

automatically.

Preset CH memory become full over?

Yes

No

ASPM, summary operation

– 16 –

CD-BA1500H

• ASPM SCAN: 87.50MHz → 108.00 MHz.

• Only RDS signal is memorized by ASPM because RDS signal has PI code and is suitable and convenient for ASPM operation.
ASPM
Comparing field strength, only one strongest RDS station is memorized of all stations (repeater relay stations) that have same

PI code.

Each PI has AF’S list by individually.

Same PI code — freq: different

(AF’S)
PS: same
PTY: same

[For example] Pickup and memorized to preset CH.

f 1
f 2 f 3

P 1 (PI code)
PS 1 (Station Name)

Select signals (f1, f5, f7, f10) are memorized in the preset memory by ASPM.

• If tentative - ASPM operation is repeated intentionally, never memorized (over write) at the same frequecy.
1st time ASPM → strongest stations of each PI are memorized.

ASPM is not only very usefull for PTY search, but also EON operation.
2nd time ASPM → 2nd strong stations of each PI are memorized and so on.
PTY search function is equal to FM band search function as a result.

f 5 f 4

P 2
PS 2

Exa: P1 has f1, f2, f3 (same PTY).
P2 has f4, f5 (same PTY).

---

f 6
f 7 f 8

P 3
PS 3

---

f 9 f 10
f 11 f 12 f13

P 4
PS 4

1. Introduction of RDS for CD-BA1500H.

CD-BA1500H RDS function is equal to adding EON feature to the current CD-C75H RDS.
EON feature is EON—PTY and EON—TI.
Although PTY and TI indicators are separated, PTY contains TI in the PTY items (software) like current PTY search items.

NEWS, AFFAIRS, INFO, ALARM, TI (TTL 17 kinds)

↑

EON—PTY EON—TI

Can select and stand-by Can select and stand-by

EON—PTY and EON—TI are basically stand-by → receive the desired program of ON station.

2. The difference point from current CD-C75H RDS. (CD-C75H — CD-BA1500H)

1. PTY item: added TA. (TTL 18 kind.)

2. Each “TP”, “TA” ind. light up or go out individually.
“TA” ind. doesn’t light up on current model, CD-C75H due to none EON—TI.

3. Added 3 indicators(in FL) due to adding EON feature.
EON: Lights up only during receiving EON data (14A).
TI: During EON-TI stand-by → Light up

During receiving ON station. → blink.

PTY: During EON-PTY stand-by → Light up

During receiving ON station. → blink.

4. No adjust type (None adjusting circuit.)

5. Added EON button.

6. Need to change RDS logo due to the addition of EON feature.

7. Added EON—TI, EON—PTY function.

3. Summary of CD-BA1500H RDS—EON operation

EON—PTY: Select and set the desired “PTY” → stand-by → switch to ON (other networ k) Station at the star t of desired PTY

automatically → stay and listen to PTY of ON station → s witch back to TN (This net) station automatically at the end
of PTY (ON) i.e. after changing to another PTY (except AFFAIRS) or cancelling to receive PTY of ON station
midway.

EON—TI: Select and set the “TI” → stand-by → switch to ON station at the start of traffic announcement automatically → stay

and listen to TA of ON station → switch bac k to TN station automatically at the end of TA (ON).
ie after TA (ON) is over or cancelled to receive TA of ON station midway.

When switching TN → ON station.
In case of exist 2 more stations having the desired (specified) “PTY” or “TI”, the receiver will select and switch to ON station
comparing field strength at the same time. But when the frequency of ON station exists in the preset-memory, then receiver
switches straight to that ON station (CH), without comparing field strength so can make a quic k s witching from TN—ON station.
Preset memory takes priority of switching TN—ON station.
Therefore ASPM is usefull not only for PTY search b ut also for rapid EON switching.
Anyway CD-BA1500H EON is basically stand-by and receiving method, along with the Guidelines for EON implementation.

↑

– 17 –

CD-BA1500H

EON summary notice for reference

1. EON-TI/PTY EON stand-by can be set, only when EON ind. lights up.
While EON ind. goes out (NO EON STATION), EON stand-by can't be set.
If the EON button is pressed, then “NO EON” is indication the display.

2. EON-TI/PTY Even if switch back ON → TN station continue to keep EON stand-by.

3. EON-TI Don’t switch TN → ON during TN broadcast TA. (same item)

4. EON-TI/PTY

5. EON-TI/PTY EON stand-by is perfectly cancelled (cleared) by pressing EON button 2 times during stand-by or power OFF

6. EON-TI/PTY After setting EON stand-by, stand-by items can be confirmed by pressing EON button one time.

7. EON-TI/PTY EON button function: • EON setting

8. EON-TI/PTY After setting EON-TI and EON-PTY stand-by, if when EON data is not transmitted, EON ind goes out and

9. EON-TI EON-TI stand-by can't be set. When TP=0,TA=0 (TN) even if EON ind. lights up and the EON button is

10. EON-PTY Don’t switch TN → ON during TN broadcast same specified PTY. (same item of PTY)

11. EON-TI/PTY Switch TN→ON → TN station one cycle.

12. EON-TI/PTY After switch TN → ON station. When ON station is NO RDS, NO signal, TA=OFF or different PTY items.

13. During receive ON station. when ON station become to be NO RDS, NO signal, TA=ON to OFF or different

14. EON-TI/PTY Switch TN → ON in case of 2 more stations exist, comparing field strength and switch to the strongest station,

15. Even if switch TN → ON preset memory straight, that ON station is very weak signal, then search another

16. EON-TI/PTY No linkage volume, power ON/OFF, and switch function.

EON can be cancelled during receiving ON station by pressing EON button if necessary and switch back ON→TN.
or Tun Up/Down or change band or recall pre-set CH.

• Confirm stand-by items

• Cancel (ON→TN)

• EON clear cancel (2 times)
EON stand-by is automatically cancelled display “NO EON”.
pressed then “NO TI” is indication the display.

Never switch TN → ON1 → ON2 → Other net to other net station.
The receiver switch back ON → TN displaying “NO READY”.
PTY item, The receiver switch back ON → TN.
if these signals are same strength, switch to the first previous station.

If same frequency as AF'Sexists in the preset memory, then switch TN → ON (preset memory station) straight.
In case of exist 2 more preset memories of AF’S,then switch to the preset CH which taken in EON DATA
first, also in this case no concern to field strength.

AF'S (ON) station comparing field strength and switch to the strongest station as a result. Of all atations of
AF'S are very weak or no good condition, then, switch back ON → TN automatically display "NO READY".

Traffic Programme code

(TP)

OFF OFF This programme does not carry traffic announcements nor does

OFF ON This programmecarries EON information about another

ON OFF This programme carries traffic announcements but none are

ON ON A traffic announcement is being broadcast on this programme

Traffic Announcement code

(TA)

Applications

it refer, via EON, to a programme that does.

programme which gives traffic information.

being broadcast at present and may also carry EON information
about other traffic announcements.

at present.

– 18 –

CD-BA1500H

RDS (Radio Data System) OPERATION

RDS is a broadcasting service which a growing number

of FM stations are now providing. It allows these FM

stations to send additional signals along with their regu-

lar programme signals. For example, the stations send

their station names, and information about what type of

programme they broadcast, such as sports or music,

etc.

When tuned to an FM station which provide the RDS

service, the RDS will appear, the station frequency (and

then the station name if sent) is displayed.

The TP (Traffic Programme) will appear on the display

when the received broadcast carries traffic an-

nouncements, and the TA (Traffic Announcement) will

appear whilst a traffic announcement is being received.

EON will appear whilst the EON (Enhanced Other Net-

works information) data is being broadcast.

The PTYI (Dynamic PTY Indicator) will appear whilst the

Dynamic PTY station is being received.

Note:

When the TP and TA appear at the same time, an an-

nouncement is being made.

When only the TA appears, an announcement is not

being made.

■

Information Provided by RDS

With the CD-BA1500H, you can display three types of RDS ser-

vice. To show them in the display, press the DISPLAY MODE

button.

Each time you press the DISPLAY MODE button, the display will

change to show the following information.

PS (Programme Service):

Station names commonly

known will be displayed.

"NO PS" appears if no signal

is being received.

PTY (Programme Type): Programme type will be dis-

played.

"NO PTY" appears if no sig-

nal is being received.

RT (Radio Text): Radio text will be displayed.

"NO RT" appears if no signal

is being received.

Station Frequency: Station frequencies.

DISPLAY

MODE

(Continued)

Descriptions of the PTY (Programme Type) codes, TP (Traffic Programme) and TA (Traffic Announcement)

With the CD-BA1500H, you can search for and receive the following PTY, TP and TA signals.

NEWS:

Short accounts of facts, events and

publicly expressed views, reportage

and actuality.

AFFAIRS:

Topical programme expanding or en-

larging upon the news, generally in dif-

ferent presentation style or concept,

including debate, or analysis.

INFO:

Programmes whose purpose is to im-

part advice in the widest sense.

SPORT:

Programme concerned with any aspect

of sport.

EDUCATE:

Programme intended primarily to edu-

cate, of which the formal element is

fundamental.

DRAMA:

All radio plays and serials.

CULTURE:

Programmes concerned with any as-

pect of national or regional culture, in-

cluding language, theatre, etc.

SCIENCE:

Programmes about the natural scien-

ces and technology.

VARIED:

Used for mainly speech-based pro-

grammes usually of light-entertainment

nature, not covered by other ca-

tegories. Examples include: quizzes.

panel games, personality interviews.

POP M:

Commercial music, which would gener-

ally be considered to be of current

popular appeal, often featuring in cur-

rent or recent record sales charts.

ROCK M:

Contemporary modern music, usually

written and performed by young musi-

cians.

EASY M:

Current contemporary music con-

sidered to be "easy-listening", as op-

posed to Pop, Rock or Classical, or one

of the specialized music styles, Jazz,

Folk or Country. Music in this category

is often but not always, vocal, and

usually of short duration.

LIGHT M:

Classical Musical for general, rather

than specialist appreciation. Examples

of music in this category are instrumen-

tal music, and vocal or choral works.

CLASSICS:

Performances of major orchestral

works, symphonies, chamber music

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 Me-

teorological information.

FINANCE:

Stock Market reports, commerce, trading etc.

CHILDREN:

For programmes targeted at a young audience,

primarily for entertainment and interest, rather

than where the objective is to educate.

SOCIAL:

Programmes about people and things that in-

fluence 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 destinations, package tours and

travel ideas and opportunities. Not for use for

Announcements about problems, delays, or

roadworks affecting immediate travel where

TP/TA should be used.

LEISURE:

Programmes concerned with recreational acti-

vities in which the listener 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 mu-

sical tradition of the American Southern States.

Characterised by a straightforward melody and

narrative story line.

NATION M:

Current Popular Music of the Nation or Region

in that country's language, as opposed to Inter-

national `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.

DOCUMENT:

Programme concerned with factual matters,

presented in an investigative style.

TEST:

Broadcast when testing emergency broadcast

equipment or receivers.

ALARM !:

Emergency announcement made under excep-

tional 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 at

present.

Note:

● When the unit is in the EON stand-by mode and a programme

is selected, the unit will display "TI" instead of "TA".

– 19 –

CD-BA1500H

NOTES ON SCHEMATIC DIAGRAM

• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.

• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to
electrolytic capacitor, the expression “capacitance/withstand
voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type

• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.

• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas­sis with no signal given.

1. In the tuner section,

( ) indicates AM
< > indicates FM stereo

2. In the main section, a tape is being played back.

3. In the deck section, a tape is being played back.

( ) indicates the record state.

4. In the power section, a tape is being played back.

5. In the CD section, the CD is stopped.

• Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.

REF. NO DESCRIPTION POSITION POSITION

SW1 OPEN/CLOSE ON—OFF
SW2 CLAMP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW601 POWER ON—OFF
SW602 CLOCK ON—OFF
SW603 TIMER/SLEEP ON— OFF
SW604 PTY TI/SEARCH ON— OFF
SW605 EON ON—OFF
SW606 ASPM ON—OFF
SW607 DISPLAY MODE ON—OFF
SW608 STATION ON—OFF
SW609 DISC SKIP ON—OFF
SW610 OPEN/CLOSE ON— OFF
SW611 DIMMER ON—OFF
SW612 X-BASS/DEMO ON—OFF

REF. NO DESCRIPTION

SW613 EQUALIZER ON—OFF
SW614 VOLUME UP ON—OFF
SW615 VOLUME DOWN ON—OFF
SW616 CD ON—OFF
SW617 TAPE ON—OFF
SW618 TUNING /TIME DOWN ON—OFF
SW619 MEMORY/SET ON—OFF
SW620 REWIND ON—OFF
SW621 FORWARD ON—OFF
SW622 PLAY/REPEAT ON—OFF
SW623 STOP ON—OFF
SW625 REC/PAUSE ON—OFF
SW626 TUNING/TIME UP ON—OFF
SW627 VIDEO/AUX ON—OFF
SW628 TUNER (BAND) ON—OFF

FRONT

VIEW

FRONT

FRONT
VIEW

VIEW

E C B

(S) (G) (D)
(1) (2) (3)

KTA1266 GR
KRC102 M
KRC104 M
KTA1271 Y
KTA1274 Y
2SC1845 F

KTA1273 Y
KTC3203 Y
KTC3199 GR
KRC107 M
2SC380 O

Figure 20 TYPES OF TRANSISTOR AND LED

BCE

KTC2026

– 20 –

4204SRT7

CNP12

CNP11

Q2

+3.3V

+5V

CONT5

CONT2

CONT3

CONT4

CONT7

CONT6

SLD0

SPD0

FD0
TD0

+5V

TO DISPLAY SECTION

CLAMP SW

CDINT

WRQ

CE

DO

CLK

DI

CD RES

GND

DRF

CNS4

BI4

CNP4

M2

SLED

MOTOR

M1

SPINDLE

MOTOR

M

M

TRACKING COIL

FOCUS COIL

PICKUP UNIT

TE

FE

RFEV

HFL

VVDD

ADAVDD

VDD

LVDD

RVDD

XVDD

VDD5V

RFEV

FE-

FE

TE-

TE

HFL

+3.3V

CONSTANT

VOLTAGR

+5V

Q1

Q3

LASER

DRIVER

LDD

PD

VCC3

VCC2

VCC4

VCC1

TIN2

TIN1

FIN2

FIN1

IC3

M63001FP
FOCUS/TRACKING/
SPIN/SLED DRIVER

IC1

LA9235M

SERVO AMP.

TO MAIN SECTION

(TO IC401)

R-CH

L-CH

AGND

DGND

+5V(+B3)

RCHO

RVSS

LVSS

LCHO

IC2

LC78641E

SERVO/SIGNAL

CONTROL

-

+

M

SW1

OPEN/

CLOSE

XL1

16.9344MHz

6

5

43

3

2

5

4

1

12

34

7

8

217

89

10

12

4

3

5

SW2

CLAMP

SW3
DISC

NUMBER

M3 T/T

UP/DOWN

MOTOR

6

12

4

3

56

12

4

3

56

75

76

45 46

47 48 32 31

30
65
66
67
68
69
70
71
72

CE
CL

DI

DO

INT

WRQ

RES

DEF

52

51

XOUT

XIN

735183644 49 50 7 14 15 16

23

24

25

26

33

3

13

19

40

64

74

17

18 19 20

21

22

30

23
11

9

1

45671516 26 27

2 1725 4142 3839

35

29
22
21
14

8

40

18

24
23
28

SW4

PICKUP IN

+3.3V

CNS99

BI99

CNP5

IC99

TOTX178A

OPTICAL FIBER

DATA LINK

12

3

12

3

12

3

37

DOUT

12

3

CD-BA1500H

Figure 21 BLOCK DIAGRAM (1/3)

– 21 –