SHARP CD-XP300W Service Manual

CD-XP300W

SERVICE MANUAL

No. S4220CDXP300W

MINI COMPONENT SYSTEM

MODEL CD-XP300W

CD-XP300W Mini Component System consisting of CD-XP300W
(main unit) and CP-XP300 (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

VOLTAGE SELECTION......................................................................................................................................................2

AC POWER SUPPLY CORD AND AC PLUG SDARTOR..................................................................................................2

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

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

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

DISASSEMBLY.................................................................................................................................................................. 8

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 11

ADJUSTMENT ................................................................................................................................................................. 12

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 16

TYPES OF TRANSISTOR AND LED............................................................................................................................... 16

BLOCK DIAGRAM ........................................................................................................................................................... 17

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 20

VOLTAGE ........................................................................................................................................................................ 37

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 38

TROUBLESHOOTING..................................................................................................................................................... 39

FUNCTION TABLE OF IC................................................................................................................................................ 43

FL DISPLAY..................................................................................................................................................................... 50

REPLACEMENT PARTS LIST/EXPLODED VIEW

SHARP CORPORATION

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

CD-XP300W

SAFETY PRECAUTION FOR SERVICE MANUAL

WARNINGS

THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER
COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE OBSERVED DURING SERVICING TO PROTECT YOUR EYES
AGAINST EXPOSURE TO THE LASER BEAM.

1-WHEN THE CABINET IS REMOVED, THE POWER IS TURNED ON WITHOUT A COMPACT DISC IN POSITION AND THE

PICKUP IS ON THE OUTER EDGE 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 UNIT AND REPLACEMENT SERVICE PARTS ARE ALL FACTORY

PRESET BEFORE SHIPMENT.

DO NOT ATTEMPT TO READJUST THE LASER PICKUP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP LENS AT ANY TIME.
4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE

SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

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

VOLTAGE SELECTION

Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage
as follows.
Turn the selector with a screwdriver until the appropriate voltage number appears in the window (110 V, 127 V, 220 V or 230 V-240 V AC).

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR

QACCA0003AW00

QACCE0008AW00 QACCZ0007AW00

QACCJ0007AW00

QACCL0005AW00

QPLGA0003AWZZ

QPLGA0004AWZZ

– 2 –

CD-XP300W

CD-XP300W

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

SPECIFICATIONS

General

Power source
Power consumption
Dimensions

Weight

Amplifier

Output power

Output terminals

Input terminals

CD player

Type
Signal readout
D/A converter
Frequency response
Dynamic range

AC 110/127/220/230 - 240 V, 50/60 Hz
107 W
Width: 270 mm (10-5/8")

Height: 330 mm (13")
Depth: 355 mm (13-15/16")

8.5 kg (18.7 lbs.)

MPO: 336 W (168 W + 168 W) (10 % T.H.D.)
RMS: 200 W (100 W + 100 W) (10 % T.H.D.)
RMS: 158 W (79 W + 79 W) (0.9 % T.H.D.)
Speakers: 6 ohms
Headphones: 16 - 50 ohms (recommended: 32 ohms)
Video/Auxiliary (audio signal): 500 mV/47 kohms
Microphone: 1 mV/600 ohms

3-disc multi-play compact disc player
Non-contact, 3-beam semiconductor laser pickup
1-bit D/A converter
20 - 20,000 Hz
90 dB (1 kHz)

Tuner

Frequency range

FM: 88 - 108 MHz
AM: 531 - 1,602 kHz

Cassette deck

Frequency response
Signal/noise ratio

Wow and flutter

CP-XP300

Type

Maximum input power
Rated input power
Impedance
Dimensions

Weight

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

50 - 14,000 Hz (Normal tape)
55 dB (TAPE 1, playback)

50 dB (TAPE 2, recording/playback)

0.3 % (WRMS)

2-way type speaker system
5 cm (2") Tweeter
16 cm (6-1/2") Woofer
200 W
100 W
6 ohms
Width: 220 mm (8-11/16")

Height: 330 mm (13")
Depth: 232 mm (9-1/8")

3.3 kg (7.3 lbs.)/each

– 3 –

CD-XP300W

NAMES OF PARTS

CD-XP300W

Front panel

1. Disc Tray

2. Timer Set Indicator

3. On/Stand-by Button

4. Tuner (Band) Button

5. CD Button

6. Headphone Socket

7. Microphone Level Control

8. Microphone Socket

9. Tape (1 2) Button

10. Video/Auxiliary Button

11. Equaliser Mode Select/Extra Bass/Demo Mode Button

12. Disc Tray Open/Close Button

13. Disc Skip Button

14. Volume Up and Down Buttons

15. Tape 1 Cassette Compartment

16. Tape 2 Cassette Compartment

17. CD Track Down or Fast Reverse, Tape 2 Fast Wind,
Tuner Preset Down Button

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

19. Clock Button

20. Timer/Sleep Button

21. Tape 2 Reverse Mode Select Button

22. Tape 2 Reverse Play Button

23. CD Play or Repeat, Tape 1 Play, Tape 2 Forward Play Button

24. CD or Tape Stop Button

25. Tuning and Time Down Button

26. Memory/Set Button

27. Tape 2 Record Pause Button

28. Tuning and Time Up Button

1
2
3

4
5
6

7
8

17

2221

1918 20

23 2425 282726

9
10

11
12

13
14

15
16

Display

1. CD Pause Indicator

2. Extra Bass Indicator

3. Disc Number Indicators

4. Tape 2 Record Indicator

5. FM Stereo Mode Indicator

6. FM Stereo Receiving Indicator

7. Timer Play Indicator

8. Sleep Indicator

9. Timer Recording Indicator

10. CD Play Indicator

11. CD Repeat Play Indicator

12. Karaoke Mode Indicator

13. Tape Reverse Mode Indicator

14. Tape 2 Reverse Play Indicator

15. Tape 1 Play or Tape 2 Forward Play Indicator

16. Memory Indicator

Rear panel

1. Cooling Fan

2. AC Voltage Selector

3. AC Power Lead

4. Transport Screw

5. FM 75 Ohms Aerial Terminal

6. FM Aerial Earth Terminal

7. AM Loop Aerial Socket

8. Span Selector Switch

9. Video/Auxiliary (Audio Signal) Input Sockets

10. Speaker Terminals

10
11

24567931 8

14 15 16

1
2

12
13

4
5

6
7
8

9
10

– 4 –

3

1

2
3

4
5

6
7
8

9

11
12

14

18
19
20

21
22

15

16

23

10

13

17

CD-XP300W

Remote control

CD-XP300W

1. Remote Control Transmitter

2. On/Stand-by Button

3. Disc Number Select Buttons

4. CD Random Button

5. CD Memory Button

6. Karaoke Mode Button

7. Tape 2 Record Pause Button

8. CD Track Down or Fast Reverse, Tape 2 Fast Wind Button

9. CD or Tape Stop Button

10.Tape 2 Reverse Play Button

11. CD Button

12. Tuner (Band) Button

13. Video/Auxiliary Button

14. Extra Bass Button

15. Equaliser Mode Select Button

16. CD Clear Button

17. Echo Level Up and Down Buttons

18. Tuner Preset Up and Down Buttons

19. CD Pause Button

20. CD Track Up or Fast Forward, Tape 2 Fast Wind Button

21. CD Play or Repeat, Tape 1 Play, Tape 2 Forward Play Button

22. Tape (1 2) Button

23. Volume Up and Down Buttons

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.

1. Tweeter

2. Woofer

3. Bass Reflex Duct

4. Speaker Wire

CP-XP300

1

2
3

3

4

– 5 –

CD-XP300W

System connections

OPERATION MANUAL

Setting the AC voltage selector

Check the setting of the AC voltage selector located on the rear panel before plug­ging the unit into a wall socket. If necessary, adjust the selector to correspond to the
AC power voltage used in your area.

Turn the selector with a screwdriver until the appropriate voltage num­ber appears in the window (110 V, 127 V, 220 V or 230 V - 240 V AC).

Connecting the AC power lead

After making all connections, plug the unit. If you plug the unit first,
the unit will enter the demonstration mode.

Notes:

The unit will start the tape initialisation when plugged in to the AC socket. During
this process, initialising sound will be heard and the unit cannot be turned on. Wait
until the process is finished.
Unplug the AC power lead from the wall socket if the unit will not be in use for a
prolonged period of time.

AC Plug Adaptor

In areas (or countries) where a wall socket as shown in illustration is used, connect
the unit using the AC plug adaptor supplied with the unit, as illustrated. The AC plug
adaptor is not included in areas where the wall socket and AC power plug can be
directly connected (see illustration ).

1

2

Setting the FM/AM span selector

The International Telecommunication Union (ITU) has established that member coun­tries should maintain either a 100 kHz or a 50 kHz interval between broadcasting fre­quencies of FM stations and 10 kHz or 9 kHz for AM station. The illustration shows
the 50/9 kHz zones (regions 1 and 3), and the 100/10 kHz zone (region 2).
Before using the unit, set the SPAN SELECTOR switch (on the rear panel) to the
interval (span) of your area.

To change the tuning zone:

1 Press the ON/STAND-BY button to enter the stand-by mode.
2 Set the SPAN SELECTOR switch (on the rear panel) as follows.

For 50 kHz FM interval (9 kHz in AM) 50/9
For 100 kHz FM interval (10 kHz in AM) 100/10

3 Whilst pressi ng down the CLOCK button and the EQUALIZER/X-BASS/DEMO but-

ton, 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 programme.

Setting the clock

In this example, the clock is set for the 24-hour (0:00) 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 24-hour or 12­hour display and then press the MEMORY/SET button.

"0:00" The 24-hour display will appear.
(0:00 - 23:59)
"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)
Note that this can only be set when the unit is first installed or it has been reset.

[Refer to "Clearing all the memory (reset)".]

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.

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 step 1. If the time display is flashing, step 3 (for
selecting the 24-hour or 12-hour display) will be skipped.

To change the 24-hour or 12-hour display:

1 Clear all the programmed contents. [Refer to "Clearing all the memory (reset)".]
2 Perform "Setting the clock" from step 1.

– 6 –

Troubleshooting chart

Remote control

Test of the remote control

Point the remote control directly at the remote
sensor on the unit.

The remote control can be used within
the range shown:

Press the ON/STAND-BY button. Does the pow­er turn on? Now, you can enjoy the music

.

Remote sensor

0.2 m - 6 m

(8" - 20')

CD-XP300W

Many potential problems can be resolved by the owner without cal ling a service tech­nician.
If something is wrong with this product, check the following before calling your autho­rised SHARP dealer or service centre.

General

Symptom Possible cause

The clock is not on time. Did a power failure occur? Reset the

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

No sound is heard. Is the volume level set to "0"?

clock.
Set this unit to the power stand-by mode

and then turn it back on.
If the unit still malfunctions, reset it.

Are the headphones connected?
Are the speaker wires disconnected?
Is the karaoke mode set to "L-CH", "R-CH"

or "V-CANCEL"?

CD player

Symptom Possible cause

Playback does not start. Is the disc loaded upside down?
Playback stops in the middle or is

not performed properly.
Playback sounds are skipped, or

stopped in the middle of a track.

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?

Tuner

Symptom Possible cause

Radio makes unusual noise con­secutively.

Is the unit placed near the TV or comput­er?

Is the FM aerial or AM loop aerial placed
properly? Move the AC power lead or the
unit away from the aerial if located near.

Cassette deck

Symptom Possible cause

Cannot record. Is the erase-prevention tab removed?
Cannot record tracks with proper

sound quality.
Cannot erase completely.
Sound skipping. Is there any slack?

Cannot hear treble. Are the capstans, pinch rollers, or heads
Sound fluctuation.
Cannot remove the tape. If a power failure occurs during playback,

Is it a normal tape? (Y ou cannot record on
a metal or CrO tape.)

Is the tape stretched?

dirty?

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

Karaoke

Symptom Possible cause

The vocal part of a multiplexed
disc is not heard.

Is the karaoke mode set to "L-CH", "R-CH"
or "V-CANCEL"?

Remote control

Symptom Possible cause

The remote control does not oper­ate.

Is the AC power lead 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?

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 the previous operation, unplug and plug in the unit,

and then turn the power on.

Note:

If neither operation above restores the unit, clear all the memor y by resetting it.

Clearing all the memory (reset)

1 Press the ON/STAND-BY button to enter the power stand-by mode.
2 Whilst pressing down the CLOCK button and the EQUALIZER/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 programme.

Before transporting the unit

On the back of this unit is equipped with a tr ansport screw in order to pre vent damage
during transportation.

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 in 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 unplug the AC

power lead from the wall socket.
6 Insert the transport screw into the back of

the unit and tighten it with a flat head screw-

driver or a coin.

– 7 –

(C3) x 1

CD Player
Unit

CD Tray Cover

(C2) x 3

1

1

2

2

(E1) x 1
ø3 x 10mm

(C1) x 1
ø3 x 10mm

(E1) x 1
ø3 x 10mm

(D1) x 1
ø3 x 10mm

Lug Wire

Main PWB

Rear
Panel

Pull

(C3) x 1

(C4) x 2

CD Servo
PWB

Main
PWB

(D2) x 1

(D1) x 9
ø3 x 10mm

Pull

Front
Panel

CD-XP300W

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-XP300W

STEP

10

11 Turntable 1. Hook......................... (L1) x2 9-3

12 Loading Tray 1.

13 CD Servo PWB 1. Screw ...................... (N1) x2 9-5

14 CD Mechanism 1. Hook........................ (P1) x2 9-6

Note 1: How to open the changer manually. (Fig. 8-3)

1. In this state, turn fully the lock lever in the arrow direction through

2. After that, push forward the loading tray.

Note 2:

1. After removing the connector for the optical pickup from the

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

REMOVAL

1 Top Cabinet 1. Screw ...................... (A1) x4 8-1

2 Side Panel 1. Screw ...................... (B1) x8 8-1

(Left/Right)

3 CD Tray Cover/ 1. Turn on the power supply,.. 8-2

CD Player Unit open the disc tray, take out

4 Rear Panel with 1. Screw .................... (D1) x10 8-2

Fan Motor 2. Socket ..................... (D2) x1

5 Main PWB 1. Screw ...................... (E1) x4 8-2, 9-1

6 Front Panel 1. Screw .......................(F1) x2 9-1

7 Mic PWB 1. Screw ...................... (G1) x2 9-1

8 Display PWB 1. Screw .................... (H1) x12 9-2

9 Tape Mechanism 1. Open the cassette holder. 9-2

Headphones PWB

(Note 2) 2. Hook........................ (N2) x1

the hole on the loading tray bottom.

connector, wrap the conductive aluminium foil around the front end
of the connector so as to protect the optical pickup from electro­static damage.

movement.

the CD tray cover, and close.
(Note 1)

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

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

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

5. Socket ..................... (C4) x2

2. Socket ..................... (E2) x4 9-1

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

4. Flat Wire.................. (E4) x1

2. Hook.........................(F2) x2

3. Socket ......................(F3) x1

2. Lug Wire.................. (G2) x1

2. Flat Cable ............... (H2) x1

2. Screw...................... (J1) x5

1. Screw ...................... (K1) x1 9-2

2. Cover ....................... (L2) x1

2.

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

2. Hook........................ (P2) x2

PROCEDURE

Turn fully the lock lever in the

arrow direction

Push the loading tray backward
to engage the claw with the
groove and remove it in the
direction of the arrow..(M1) x6

.

FIGURE

8-3
9-4

– 8 –

(B1) x 2
ø3 x 10mm

CD-XP300W

(A1) x 2
ø3 x 12mm

Side Panel
(Right)

(B1) x 4
ø3 x 10mm

Lock Lever

CD Player Unit
(Bottom View)

Top Cabinet

Rear
Panel

Figure 8-1

Figure 8-2

Figure 8-3

Front

Panel

Side Panel
(Left)

(B1) x 2
ø3 x 10mm

(A1) x 2
ø3 x 12mm

CD-XP300W

(M1) x 3

3

(M1) x 3

Loading Tray

1

2

CD Player Unit

CD
Mechanism

(P2) x 2

(P1) x 1

(P1) x 1

Loading Tray

Tape
Mechanism

(E2) x 1

(E2) x 1
(F3) x 1

(F2) x 1

Pull

Power PWB

Transformer
PWB

(E3) x 1

(E1) x 2

ø3 x 10mm

(H2) x 1

Display PWB

(H1) x 12
ø3 x 10mm

(E2) x 1

Figure 9-1

(G1) x 2
ø3 x 10mm

Front
Panel

Display
PWB

Main PWB

(F2) x 1

Pull

(F1) x 2
ø3 x 10mm

(E2) x 1

(G2) x 1

Mic
PWB

(E4) x 1

Headphones

PWB

Front Panel

(N2) x 1

(N1) x 2
ø3 x 10mm

(N3) x 2

Figure 9-4

Loading
Tray

CD Servo

PWB

Tape Mechanism

(J1) x 5
ø3 x 10mm

Headphones

Display
PWB

(K1) x 1

ø3 x 10mm

(L2) x 1

(L1) x 2

PWB

Figure 9-2

Lug Wire

Open

(N3) x 2

Figure 9-5

Cassette
Holder

Turntable

Loading
Tray

CD Player Unit

Figure 9-6

Figure 9-3

– 9 –

CD-XP300W

CP-XP300

STEP

Screwdriver

REMOVAL

1 Woofer 1. Front Panel Ass'y.... (A1) x1 10-1

2. Screw ...................... (A2) x4 10-2

2 Tweeter 1. Screw ...................... (B1) x2 10-2

Driver should
be pried away
from Speaker Box.

PROCEDURE

(A1) x 1

Speaker Box

Figure 10-1

FIGURE

Tweeter

(B1) x 2
ø3 x 10mm

Speaker Box

Woofer

(A2) x 4
ø4 x 16mm

Figure 10-2

– 10 –

REMOVING AND REINSTALLING THE MAIN PARTS

TAPE 2

TAPE 1
Main Belt
(E1) x 1

TAPE 2
Main Belt
(D1) x 1

TAPE 1

Main Belt
(D1) x 1

Main Belt
(E1) x 1

FF/REW
Belt
(D2) x 1

FF/REW
Belt
(E2) x 1

Motor

Motor

TAPE MECHANISM SECTION

Perform steps 1 to 6 and 9 of the disassembly method to
remove the tape mechanism.

How to remove the record/playback and erase
heads (TAPE 2) (See Fig. 11-1)

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

CD-XP300W

Clutch Ass'y

Record/Playback
Head

How to remove the playback head (TAPE 1)
(See Fig. 11-2)

1. When you remove the screws (B1) x 2 pcs., the playback
head can be removed.

How to remove the pinch roller (TAPE 1/2)
(See Fig. 11-3)

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. 11-4)

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. 11-4)

1. Remove the main belt (E1) x 1 pc., from the motor side.

2. Remove the FF/REW belt (E2) x 1 pc.

(A1) x 2
Ø2 x 9mm

Figure 11-1

TAPE 1

(B1) x 2
Ø2 x 9mm

Figure 11-2

Clutch Ass'y

Playback
Head

How to remove the motor (See Fig. 11-5)

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

Tape

Motor

Clutch Ass'y

(F1) x 2
Ø 2.6 x 5mm

– 11 –

Pinch Roller
(C1) x 1

Pull

<B>

Figure 11-3

Figure 11-4Figure 11-5

<A>

Pinch
Roller
Pawl

CD-XP300W
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. 12-1)

1. Bend the hooks (A1) x 5 pcs., to remove the loading motor.

How to remove the pickup (See Fig. 12-2)

1. Remove the stop washer (B1) x 1 pc., to remove the gear
(B2) x 1 pc.

2. Remove the screws (B3) x 2 pcs., to remove the shaft
(B4) x 1 pc.

3. Remove the pickup.

Loading
Tray

(B3) x 2

ø2.6 x 6mm

Loading
Motor

Figure 12-1

Stop Washer
(B1) x 1

Loading
Motor PWB

(A1) x 5

Note

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

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter Specified Value

Play: TW-2111 Tape 1: 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

Tape 2: Over 80 g

Specified Value

Tape 1

Tape 2

Pickup

CD Mechanism

Shaft
(B4) x 1

• Tape Speed

Test Tape

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

Gear
(B2) x 1

Figure 12-2

Adjusting

Point

motor. (Load

Specified

Value

Instrument

Connection

resistance:
6 ohms)

TAPE MECHANISM

– 12 –

Tape
Motor

Variable Resistor in motor

Figure 12-3

CD-XP300W

T

T

EFBL

FDO

TE

Stopped

CH1=500 mV

DC 10:1

CH2=200 mV

DC 10:1

CH3=1 V

DC 10:1

500 ms/div

(500 ms/div)

NORM:20 kS/s

1

2

3

=Record Length=

Smoothing : ON CH1 : 0.000 V

CH2 : 0.000 V

Main : 100 K
Zoom : 2 k

Mode : SINGLE
Type : EDGE CH1
Delay : 0.0 ns
Hold off : 0.2 µs

CH3 : 0.00 V
CH4 : 0.00 V

BW : FULL

=Trigger==Filter= =Offset=

CH2
v/DIV
200 mV

1999/04/05 20:26:47

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 1,602 kHz T351 *1
AM Band — 531 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

• FM RF

Signal generator: 1 kHz, 40 kHz dev., FM modulated

Test Stage

FM Band — 87.50 MHz T301(fL): *1
Coverage 3.4 V ± 50 mV

FM RF 98.00 MHz 98.00 MHz L312 *2

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

• FM IF

Signal generator: 10.7 MHz, FM modulated

Test Stage

IF 10.7 MHz 98 MHz T302 *1

*1. Input: Antenna Output: TP301

Frequency Frequency

Display

Setting/

Adjusting

Parts

MAIN PWB

R357

TP302

T351

AM IF

FM BAND
COVERAGE fL

T301

L312

AM BAND
COVERAGE fL

T306

FM IF
T302

FM RF

R381

TP301

IC301

AM TRACKING
fL

T303

Figure 13-1 ADJUSTMENT POINTS

Frequency Frequency

Display

(10-30 dB)

Frequency Frequency

Display

Setting/

Adjusting

Point

Setting/

Adjusting

Point

(Turn the
core of trans­former T302
fully counter­clock wise)

Instrument

Connection

SO302
FM ANTENNA
TERMINAL

CNP301
AM LOOP
ANTENNA

Instrument

Connection

Instrument

Connection

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.13-2 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

01

When Pickup set inner position, inner switch
cannot detect 'ON' level for 10 secs.

When tray moves to Open/Close, Open/Close switch

10*

cannot detect 'ON' level for 7 secs.
When disc table rotate to target position.
Clamp switch cannot detect 'ON' level for 7 secs.

When disc table set to Disc1 position for 1 st time,

11* "CLAMP SW", "DISC NO SW" and "OPEN/CLOSE"

cannot detect 'ON' level for 14 secs.

31

When it changes to CD function, DSP cannot read
initial data.

* 'CHECKING'
If Error is detected, 'CHECKING' will be display instead of 'ER­CD**' display. 'ER-CD**' display will only be display when
error had been detected for the 5 th times.

– 13 –

Explanation

Figure 13-2

CD-XP300W
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.

IL isn't done

<<MEMORY>>
key input.

Adjustment result
automatically will
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) Tracking Gain = "TGAN_XX"
f) Focus Gain = "FGAN_XX"
g) RF level shift = "RFLS_XX"

<<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

<<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.

Adjustment result automatically will
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"

<<STOP>> key input.

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

To cancel : Power OFF

– 14 –

STOP

Sliding the PICKUP with

>>, << >> button

<<
must only be in STOP mode.

Standard Specification of Stereo System Error Message Display Contents

Error Contents DISPLAY Notes
TAPE Mechanism Error. 'ER-TA**' 00: Tape Mechanism Error.

01: Initial Error.
02:
03:

CD Pickup Mechanism Error. 'ER-CD**' 01: PU-IN SW Detection NG.

02:
03:
04:

CD Changer Mechanism Error. 'ER-CD**' 10: Changer Error.

(*) 11: Initial Error.

12:

13:
CD DSP Communication Error 'ER-CD**' 31: DSP COMMUNICATION ERROR
Focus Not Match. 'NO DISC'
IL Time Over. 'NOT READ'

TUN PLL Unlock. 'ER-TU**' 00: TUN Error.

01: PLL Unlock.

02:

03:

CD-XP300W

(*) CHECKING:
If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**' display 'ER-CD**' will only be display
when CD changer mechanism error had been detected for the 5 th times.

Speaker abnormal detection and +B PROTECTION display

In case speaker abnormal detection or +B PROTECTION had occurred, it can be check by pressing 'POWER', 'VIDEO' and 'X­BASS' key twice. Display will show "S** B**". S is referring to speaker abnormal detection and B is referring to +B PROTECTION.
** is in hex valve.

+B PROTECTION is condition when irregular process occur on power supply line.

– 15 –

CD-XP300W

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 pico-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 “ 1 ” ( ) 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

SW1 OPEN/CLOSE ON—OFF
SW2 CLAMP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW601 SPAN SELECTOR 50 kHz/9 kHz
SW701 ON/STAND-BY ON—OFF
SW702 FAST REWIND/PRESET DOWN ON—OFF
SW703 FAST FORWARD/PRESET UP ON—OFF
SW704 STOP ON—OFF
SW705 PLAY/REPEAT ON—OFF
SW706 REVERSE PLAY ON—OFF
SW707 REVERSE MODE ON—OFF
SW711
SW712 TUNER (BAND) ON—OFF

CD

DESCRIPTION

POSITION

ON—OFF

TYPES OF TRANSISTOR AND LED

FRONT

VIEW

REF. NO DESCRIPTION POSITION

SW713 TAPE ON—OFF
SW714 VIDEO/AUX ON—OFF
SW715 TIMER/SLEEP ON—OFF
SW716 TUNING/TIME UP ON—OFF
SW717 RECORD PAUSE ON—OFF
SW718 MEMORY/SET ON—OFF
SW719 TUNING/TIME DOWN ON—OFF
SW720 CLOCK ON—OFF
SW721 VOLUME UP ON—OFF
SW722 VOLUME DOWN ON—OFF
SW723 DISC SKIP ON—OFF
SW724 OPEN/CLOSE ON—OFF
SW725 EQUALIZER/X-BASS/DEMO ON—OFF
SW801 VOLTAGE SELECTOR 230-240 V

FRONT

VIEW

FRONT
VIEW

E C B

(S) (G) (D)

(1) (2) (3)

KRC102 M
KRC104 M
KTA1266 GR
KTA1273 Y
KTA1274 Y

KTC3194 Y
KTC3199 GR
KTC3200 GR
KTC3203 Y

B C E

SLR342VCJKTC2026

– 16 –

TO MAIN SECTION

TO DISPLAY SECTION

SW1

OPEN/

CLOSE

SW2

CLAMP

SW3

DISC

NUMBER

316452

M

+–

CD-XP300W

M3
CD LOADING
MOTOR

BI4

CNP7

XL1

33.8688 MHz

A_GND

R-CH

354

12

61

CE

62

CLK

63

DI

64

DO

65

WRQ

66

RES

67

DRF

XOUT

48

XIN

49

5

+3.3V(+B11)

D_GND

L-CH

RFVDD

ADAVDD

18

+6.5V (+B4)

D_GND (DRIVER)

+5V (+B7)

+5V (+B8)

687

4245 68 25 70

VDD5

LCHO

RCHO

IC1

LC78645NE

CD SERVO

VDD

XVDD

77

38

47

VVDD

41

LVDD

46

RVDD

ZD1

3.3V

O/C

CLAMP SW

CD RES

CL

DI

DO

CE

DRF

WRQ

54

327168910

Q3

71

CONT5

SLDO
SPDO

FDO
TDO

26
75

69
57
56
55
51
50
44
43
40
37
28
19

23
22
21
20

FIN1 A

CONT4

FIN2 B

987

TIN1 E

10

CONT3

TIN2 F

79

CONT2

LDS

80

LDD

DISC NO

CNP8

SW4
PICKUP
IN

+5V
(+B7)

316452

316452

40

VCC4
25
17

2
1

18

VCC1

VCC2

24
23

VCC3

M63001FP

FOCUS/TRACKING/

SPIN/SLED

CNS4

CNP4

IC2

DRIVER

41 39 38

42

35

~~

29
22

21

14

8

+5V

(+B7)

Q2

CONSTANT

VOLTAGE

+3.3V
(+B11)

PICKUP UNIT

LASER

DRIVER

+3.3V(+B11)

Q1

FOCUS COIL

TRACKING COIL

Figure 17 BLOCK DIAGRAM (1/3)

– 17 –

4765

M2

SLED

MOTOR

M1

SPINDLE

MOTOR

M

M

162826 27

15

–

+

+

–

CD-XP300W

Q
Q

A

T

FM

ANTENNA

SO302

FM ANTENNA

TERMINAL

AM LOOP

ANTENNA

BF301

B.P.F

1

IC301

TA7358AP

FM FRONT END

4

3

2

FM

L312 T301

RF

578

6
9

FM

OSC

FM
OSC

OSC BUFF

Q302

FM IF
T302

CF303

21

AM MIX

21

+B6

T351

AM IF

OUT

450 kHz

CF352

FM/AM

OUT

18

7

4

AM IF

IN

+B6

10.7 MHz

CF351

+B6

985

VCC

GND

MPX IN

162324

+B5

ZD351

5.1V

X351

456 kHz

13

17

FM

DET

MPX

VCO

L

14

MO/ST

R

PHASE

15

(FM/AM)

12

JK1
MIC

VRK1

MIC

VOLUME

TAPE 1

PLAYBACK

HEAD

TAPE 2

RECORD/

PLAYBACK

HEAD

MIC IN

L-CH
R-CH

L-CH
R-CH

AC BIAS

ERASE

HEAD

CNP301

ICK1

M65856SP

MIC AMP.

LATCH

CLOCK

L OUT

9

R OUT
12
13

MCLKCONT

+B5

REC.

P.B.

AM

TRACKING

T303 T306

40
41

DATA

42
36
35
31

L IN
R IN

32

VCC

23

2

VACL

3

QK1

Q101~
Q104

SWITCHING

Q105
Q106

+B5

BIAS OSC

Q111

AM BAND

COVERAGE

+B6

6

L(T1)

24

R(T1)
L(T2)
R(T2)

POP
REDUCE

L REC

16

R REC

11
12
15

SWITCHING

+B5

Q112

SWITCHING

L103

+B5

2
3

5

1

2

23

6
9

8

T1/T2
REC

ALC

T1/T2

+B5

Q114

IC302

LC72131

PLL

(TUNER)

CONSTANT

VOLTAGE

1

L
R

7

ICK2

KIA4558P

OPE AMP.

+B5

13

P.B

L

4

PB

21

R

H/N

L

7

18

R

ALC

IC101

10

AN7345K

19

PLAYBACK AND RECORD
/PLAYBACK AMP.

SWITCHING

Q113

+B5

Q109

SWITCHING

AM OSC IN

AM OSC OUT

AM RF IN

X352

4.5 MHZ

20 22 11

X IN

AOUT

+B5

Q360

TUNER

REC

Q110
BIAS

JK690

VIDEO/

AUX IN

R

X OUT

7

TAPE

CD

L

CD SERVO

SECTION

+B3

+B3

STEREO

LA1832S

FM IF DET.

FM MPX./AM IF

1615

CNP7

FROM

CE

MO/ST

FM/AM

10

9

9

L
R

16
10

L
R

15

LC75341

11

L
R

14
12

PROCESSOR

L
R

13

L R

7

+B7

+B8

+B4

7 8654312

BI601

MOTOR
DRIVER

Q706

Q707
Q708

SOLENOID

DRIVER

IC303

CLK

DO

DI

6

5413

VDD

17

21

23

IC601

AUDIO

1718 8

3

L R

Q107
Q108

MUTING

+B5

+B5

1

DI

2

CE

24

CLK

MECHANISM

21

4

TAPE

ASS'Y

R
L

–20dB
ATT

Q601
Q602

REC/PL

Figure 18 BLOCK DIAGRAM (2/3)

– 18 –

CD-XP300W

FL701

FL DISPLAY

~

41

32

27

33

51

13

12

~

14

~

19

~

45

Q603
Q604

EC/PLAY

MUTE

SYSTEM

+B9

Q705

SP DET.

IC901

STK41221

POWER AMP.

18

L

14

R

7

6

1

5

2

+B1

-B1

38

56 55 5245 51

70

~

78
79

VLOAD

80

~

85
86

~

91
92

93

-

100

12456 78

+B10

L-OUT

11

8

R-OUT

MICROCOMPUTER

VDD

RESET

D801

+B10

+B10

46

48

VDD

IC701

IX0532AW

SYSTEM

RESET

1 0 16 1 7 20921222324

9

XL700

4.194304 MHz

Q709

Q901~
Q904

1112

VDD

~

+B10

+B10

SP RELAY

ON-OFF

503049

Q905

40 25 13

AVDD

SPAN

CLK

CEDIDO

FAN MOTOR

DRIVER

RL914

TRANSFORMER

39

+B10

34
33

~

31

37
54
15

41

PT801

POWER

TAPE

MECHANISM

ASS'Y

RX701

REMOTE

1

SENSOR

2

KEY
SW701~SW707
SW711~SW725

SW601

SPAN

SELECTOR

TO CD
SERVO

SECTION

Q906

+B3

HEADPHONES

3

+B10

+B7

M4

M

FAN
MOTOR

SO901
SPEAKER
TERMINAL

JK701

T1/T2

BIAS

VF1

–VF

VF2

+B3
+B4

+B5

+B7
+B8
+B9

+B10

-B2

+B2

M_+13V
LD+7V

IC855

A+10V

D_5V
A_5V
SW_5V

UNSW_5.6V

KIA7812AP

VOLTAGE
REGULATOR

IC852

KIA7810AP

IC853

KIA7805AP

IC854

IC851

IC851~IC854

VOLTAGE REGULATOR

Figure 19 BLOCK DIAGRAM (3/3)

D802

AN78L05

– 19 –

F801

T4A L 125V

F802

T4A L 125V

T2A L 250V

D803, D804

F804

T2A L 250V

VOLTAGE
REGULATOR

Q801

F803

T.F.

AC POWER

SUPPLY CORD

AC 110/127/220/

230-240 V, 50/60 Hz

110V

127V

F807
T2.5A L 250V

F806
T2.5A L 250V

220V

230-240V

SW801
VOLTAGE
SELECTOR

F805
T5A L 250V

CD-XP300W

7

2

DEFECT

V

V

S

O

1

R39

8
S

D

S

A

PICKUP UNIT

PICKUP

B

HPC1LX

C

TR+

D

TR–

CD MOTOR PWB-D

M1

SPINDLE

E

F

MOTOR

M2

SLED

MOTOR

SW4

PICKUP IN

FO+
FO–

GND

M
M

TR+

FO+

VCC
VREF

+

SPIN

–
+

SLIDE

–

PU-IN

E
A
B
F
C

TR–

VR
LD

CD SERVO PWB-C

CD SIGNAL

+B

7

7

6

6

5

5

4

4

3

3

2

2

1

1

CNS1B

1

1

2

2

3

3

4

4
5
6
7
8

6
5
4
3
2
1

CNP3A

5

6

7
8

CNS2B

6

5

4

3

2

1

CNS3B

PD

7

6

5
4
3

2

1

CNS1A

1

2
3
4

5
6

7

8

CNS2A

6
5

4
3
2
1

CNS3A

7
6
5
4
3

2

1

1

2
3
4
5
6

7
8

6
5
4
3
2
1

VCC
VREF

R6 22K

E

R5 8.2K

A

R4 8.2K

B
F

R3 22K

C

R1

8.2K

CNP1

C1

47/25

TR–
TR+
FO+
FO–
GND
PD
VR
LD

+B +B

CNP2

SP+
SP–
SL+
SL–
PUIN
GND

CNP3

C40

220/6.3

R2

C39

100/10

MUTE

8.2K

C2

C38

0.01

0.01

21

22

+B

R9

3.3

Q1

LASER DRIVER

KTA1266 GR

R44

12K

+

VCC

17

+

SLDO

+

26

SP+

16

27

SL+

SP-

15

28

+B+B

SL–

VCC3

VREF

STANDBY

20

19

18

+

+

+

+

+

24

23

25

SPO

VCC2

R7
47

+B

0.047

R10

47/25

C53

0.001

11

27K

TP3

+B

22P(CH)

100/10

10

100P(CH)

TR–

GND

8

9

7

+B

14

C52

0.001

C3

C4

0.001

12 13

IC2

M63001FP
FOCUS/TRACKING/
SPIN/SLED DRIVER

33

32

31

29

30

34

C41

100/10

35

36

C46

100/10

C5

C6

0.1

C50

C9

C12
C54

0.022

R12
330

TR+

6

37

2

38

FO–

5

M–

R11

10K

C8

0.0027

TP1

TP2

C10

10/50

C11

0.22/50
+B

1K

R13

FO+

4 3 2 1

40

39

M+

VCC4

+B

1
2

4
6

10

11
12
13
14
15
16
17

18

19

20

1

FD

41

3

5
7

8
9

R14

1K

LD_M–

R42

1.2K

79 78

80

LDD

EFMIN
RF

RFVDD
RSVSS

FIN1 A
FIN2 B
TIN1 E
TIN2 F
VREF
REF1
FE
TEC

TE
RFMON

JITTC

FDO

22

21

R15

TO

LD_M+

42

+B

FR

LDS

SLDO

SPDO

232425

1K

C37

12K

R41

77

76

VVDD

5

4

6

GPDAC

1K

R16

C34
C33
C32

C30
C57
C28

C27

0.1

C36

680

R40

74

75

VVSS

PDO2

PCKIST

1

SLC

2

SLCI

LC7

CD

ADA

18

ADA

19

TDO

20

CONT5

CONT4

27

26

R17 1K

R18 1K

DS1

C35

0.22/50

73

PDO1

78

SBCK/FG

28

3

G

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.

1

23456

Figure 20 SCHEMATIC DIAGRAM (1/10)

– 20 –