Sharp CDCH-1500-H, CDCH-1500-W Service manual

CD-CH1500H/CD-CH1500W

SERVICE MANUAL

No. S3116CDCH150H

AUDIO TOWER SYSTEM

MODEL

CD-CH1500H Audio Tower System consisting of CD-CH1500H (main unit)
and CP-RW5500H (speaker system).

Illustration: CD-CH1500H

CD-CH1500H

AUDIO TOWER SYSTEM

MODEL

CD-CH1500W Audio Tower System consisting of CD-CH1500W (main unit)
and CP-RW5500W (speaker system).

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

Illustration: CD-CH1500W

The Service Manual is for the CD-CH1500H/CD-CH1500W, which is a minor-modification model of the CD-CH1000H/CD-CH1000W. This
manual, therefore, describes only the changed points from the service manual. Please refer to the CD-CH1000H/CD-CH1000W service manual
(S9072CDCH100H) together with this manual.

CD-CH1000H/CD-CH1000W

CD-CH1500W

REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................................................16

CD CHANGER MECHANISM MAIN BASE PARTS ASSEMBLING/ADJUSTING PROCEDURE ................................................................... 17

ADJUSTMENT....................................................................................................................................................................................................24

TEST MODE .......................................................................................................................................................................................................2 5

ERROR MESSAGE LIST ............................................................................................................. ...................................................................... 28

WAVEFORMS OF CD CIRCUIT ........................................................................................................................................................................59

TROUBLESHOOTING .......................................................................................................................................................................................60

LCD DISPLAY ....................................................................................................................................................................................................69

CONTENTS

Page

SAFETY PRECAUTION FOR SERVICE MANUAL (FOR CD-CH1500H) ......................................................................... 2

SAFETY PRECAUTION FOR SERVICE MANUAL (FOR CD-CH1500W) ........................................................................ 3

VOLTAGE SELECTION (CD-CH1500W ONLY) ............................................................................................................... 3

AC POWER SUPPLY CORD (CD-CH1500W ONLY) ....................................................................................................... 3

SPECIFICATIONS ............................................................................................................................................................. 4

NAMES OF PARTS ........................................................................................................................................................... 5

OPERATION MANUAL ...................................................................................................................................................... 8

DISASSEMBLY................................................................................................................................................................ 12

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 15

BLOCK DIAGRAM ........................................................................................................................................................... 16

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 22

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 49

TYPES OF TRANSISTOR AND LED............................................................................................................................... 49

FUNCTION TABLE OF IC................................................................................................................................................ 50

PARTS GUIDE/EXPLODED VIEW

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-CH1500H/CD-CH1500W

SAFETY PRECAUTION FOR

SERVICE MANUAL

(FOR CD-CH1500H)

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 1
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.

Laser Diode Properties

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

CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

VARNING-OSYNLIG LASERSTRALNING NAR 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.

VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.

VARNING-OSYNLIG LASERSTRALNING NAR 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.

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

YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE

– 2 –

CD-CH1500H/CD-CH1500W

SAFETY PRECAUTION FOR SERVICE MANUAL (FOR CD-CH1500W)

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

CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

VARNING-OSYNLIG LASERSTRALNING NAR 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.

VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.

VARNING-OSYNLIG LASERSTRALNING NAR 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.

VOLTAGE SELECTION (CD-CH1500W ONLY)

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 230-240 V AC).

AC POWER SUPPLY CORD (CD-CH1500W ONLY)

QACCE0008AW00 QACCL0005AW00

QACCZ0007AW00

– 3 –

CD-CH1500H/CD-CH1500W

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

For CD-CH1500H

SPECIFICATIONS

For CD-CH1500W

General

Power source AC 230 V, 50 Hz
Power consumption Power on: 175 W

Power stand-by: 0.6 W (*)

Dimensions Width: 200 mm (7-7/8")

Weight 9.8 kg (21.6 lbs.)

(*) This power consumption value is obtained when the demonstration mode is can-

celled in the power stand-by mode. To cancel the demonstration mode.

Height: 352 mm (13-7/8")
Depth: 377 mm (14-7/8")

Amplifier

Output power PMPO: 668 W

MPO: 334 W (167 W + 167 W) (DIN 45 324)
Main speaker (woofer and tweeter): 134 W (67 W + 67 W)
Subwoofer: 200 W (100 W + 100 W)
RMS: 200 W (100 W + 100 W) (DIN 45 324)
Main speaker (woofer and tweeter): 80 W (40 W + 40 W)
Subwoofer: 120 W (60 W + 60 W)
RMS: 184 W (92 W + 92 W) (DIN 45 500)
Main speaker (woofer and tweeter): 74 W (37 W + 37 W)
Subwoofer: 110 W (55 W + 55 W)

Output terminals Speakers: 6 ohms

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

Input terminals Auxiliary: 500 mV/47 kohms

CD player

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

Cassette deck

Frequency response 50 - 14,000 Hz (Normal tape)
Signal/noise ratio 50 dB (recording/playback)
Wow and flutter 0.35 % (DIN 45 511)

General

Power source AC 110/127/220/230-240 V, 50/60 Hz
Power consumption Power on: 175 W
Dimensions Width: 200 mm (7-7/8")

Weight 10.4 kg (22.9 lbs.)

Height: 352 mm (13-7/8")
Depth: 377 mm (14-7/8")

Amplifier

Output power

Output terminals Speakers: 6 ohms

Input terminals Auxiliary: 500 mV/47 kohms

MPO: 334 W (167 W + 167 W) (10 % T.H.D.)
Main speaker (woofer and tweeter): 134 W (67 W + 67 W)
Subwoofer: 200 W (100 W + 100 W)
RMS: 200 W (100 W + 100 W) (10 % T.H.D.)
Main speaker (woofer and tweeter): 80 W (40 W + 40 W)
Subwoofer: 120 W (60 W + 60 W)
RMS: 184 W (92 W + 92 W) (0.9 % T.H.D.)
Main speaker (woofer and tweeter): 74 W (37 W + 37 W)
Subwoofer: 110 W (55 W + 55 W)

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

CD player

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

Cassette deck

Frequency response 50 - 14,000 Hz (Normal tape)
Signal/noise ratio 50 dB (recording/playback)
Wow and flutter 0.3 % (WRMS)

Tuner

Frequency range FM: 87.5 - 108.0 MHz

AM: 522 - 1,620 kHz

Tuner

Frequency range FM: 88 - 108.0 MHz

AM: 531 - 1,620 kHz

CP-RW5500H/CP-RW5500W

Type 3-way type speaker system

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

Maximum input power
(Total)

Rated input power (Total) 100 W
Impedance 6 ohms
Dimensions Width: 185 mm (7-5/16")

Weight 4.8 kg (10.6 lbs.)/each

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

– 4 –

200 W

Height: 417 mm (16-7/16")
Depth: 311 mm (12-1/4")

NAMES OF PARTS

Front panel

CD-CH1500H/CD-CH1500W

1. Cassette Compartment

2. Volume Up/Demo Button

3. Volume Down Button

4. Timer Set Indicator

5. On/Stand-by Button

6. CD Direct Play Buttons (with Indicator)/CD Eject Buttons

7. Disc Trays

8. Headphone Socket

9. Control Panel Open/Close Button

10. CD Play Mode Select Button

11. Equalizer Mode Select Button

12. Extra Bass Button

13. Display Button

14. Menu Button

15. Jog Dial

16. Enter Button

17. CD Button

18. Tape Button

19. Tuner (Band) Button

20. Auxiliary Button

21. Tape Reverse Mode Select Button

22. Clear Button

23. Memory Button

24. CD Fast Reverse, Tape Fast Wind or Tuning Down Button
(with Indicator)

25. Tape Reverse Play Button (with Indicator)

26. CD Fast Forward, Tape Fast Wind or Tuning Up Button
(with Indicator)

27. Tape Record Pause Button

28. Stop Button (with Indicator)

29. CD Play or Pause, Tape Forward Play Button
(with Indicator)

22
23

24
25

17

1
2

3
4
5

6
7
8

18

19

20

CD-CH1500H/CD-CH1500W

21

26

27

28

29

14 15 16

9
10

11
12
13

Multi-function LCD display

For CD-CH1500H

1. Function Indicator

2. Extra Bass Indicator

3. Random Play Indicator

4. Memory Indicator

5. Total Indicator

6. Remain Indicator

7. Timer Play Indicator

8. Sleep Indicator

9. Timer Recording Indicator

10. All Disc Play Indicator

11. Cassette Indicator

12. Level Meter

13. CD Indicators

14. CD Repeat Indicator

15. CD Pause Indicator

16. CD Play Indicator

17. FM Stereo Indicator

18. Tape Reverse Mode Indicator

19. FM Stereo Mode Indicator

20. RDS Indicator

21. Radio Text Indicator

22. Clock Time Indicator

23. Dynamic PTY Indicator

24. Traffic Programme Indicator

25. EON Indicator

26. Traffic Information Indicator

27. Programme Type Indicator

28. Traffic Announcement Indicator

1
2
3
4
5
6
7

8 9 10 11 12

Illustration: CD-CH1500H

13
14
15
16

17
18

19

20
21

22
23
24

25
26

27

28

– 5 –

CD-CH1500H/CD-CH1500W

For CD-CH1500W

1. Function Indicator

2. Extra Bass Indicator

3. Random Play Indicator

4. Memory Indicator

5. Total Indicator

6. Remain Indicator

7. Timer Play Indicator

8. Sleep Indicator

9. Timer Recording Indicator

10. All Disc Play Indicator

11. Cassette Indicator

12. Level Meter

13. FM Stereo Mode Indicator

14. CD Indicators

15. CD Repeat Indicator

16. CD Pause Indicator

17. CD Play Indicator

18. FM Stereo Indicator

19. Tape Reverse Mode Indicator

Rear panel

For CD-CH1500H

1. AM Loop Aerial Socket

2. FM Aerial Terminal

3. Auxiliary Input Sockets

4. CD Digital Output Socket

5. Speaker Terminals

6. AC Power Lead

7. Transport screw

1
2
3
4
5
6
7

8 9 10 11 12

1

2

3

14
15
16
17

18
19

13

5

For CD-CH1500W

1. FM/AM Loop Aerial Socket

2. Span Selector Switch

3. Auxiliary Input Sockets

4. CD Digital Output Socket

5. Speaker Terminals

6. AC Voltage Selector

7. AC Power Lead

8. Transport screw

4

6

7

1

5

2

3

6

4

7

– 6 –

8

Remote control

For CD-CH1500H

1. Remote Control Transmitter

2. Tuner (Band) Button

3. CD Button

4. Auxiliary Button

5. CD Direct Play Buttons

6. Clear Button

7. Memory Button

8. CD Track Down or Fast Reverse, Tape Fast Wind, Tuner Preset

Down Button

9. Enter Button

10. Stop Button

11. Menu Button

12. Time Button

13. FM Stereo Mode Button

14. Control Panel Open/Close Button

15. Tape Button

16. On/Stand-by Button

17. RDS Programme Type/Traffic Information Search Button

18. RDS EON Button

19. RDS ASPM (Auto Station Programme Memory) Button

20. RDS Display Mode Selector Button

21. CD Play Mode Select Button

22. CD Track Up or Fast Forward, Tape Fast Wind, Tuner Preset Up

Button

23. CD Play or Pause, Tape Play Button

24. Tape Record Pause Button

25. Tape Reverse Mode Select Button

26. Dimmer Button

27. Display Button

28. Equalizer Mode Select Button

29. Extra Bass Button

30. Volume Up or 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.

10
11

12
13

14

CD-CH1500H/CD-CH1500W

1
2
3

4
5

6
7
8

9

15
16

17
18
19
20
21

22
23

24
25

26
27

28
29
30

For CD-CH1500W

1. Remote Control Transmitter

2. Tuner (Band) Button

3. CD Button

4. Auxiliary Button

5. CD Direct Play Buttons

6. Memory Button

7. Clear Button

8. CD Track Down or Fast Reverse, Tape Fast Wind, Tuner Preset Down

Button

9. Enter Button

10. Stop Button

11. Menu Button

12. Control Panel Open/Close Button

13. Tape Button

14. On/Stand-by Button

15. Time Button

16. FM Stereo Mode Button

17. Display Button

18. Dimmer Button

19. CD Play Mode Select Button

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

21. CD Play or Pause, Tape Play Button

22. Tape Record Pause Button

23. Tape Reverse Mode Select Button

24. Equalizer Mode Select Button

25. Extra Bass Button

26. Volume Up or 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.

10
11

12

1
2
3

4

13
14

15
16
17

5
6

18
19

7

20

8
9

21
22

23
24

25

– 7 –

26

CD-CH1500H/CD-CH1500W

g

Speaker System

CP-RW5500H/CP-RW5500W

1. Woofer

2. Tweeter

3. Subwoofer

4. Subwoofer Terminals

5. Main Speaker Terminals

6. Bass Reflex Duct

1

OPERATION MANUAL

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 MENU button.

3

Turn the jog dial to select "CLOCK" and within 10 seconds, press
the ENTER button.

4

Turn the jog dial to select the 24-hour or 12-hour display and within
2 minutes, press the ENTER button.

"0:00" The 24-hour display will appear.
"AM 12:00" The 12-hour display will appear.
"AM 0:00" The 12-hour display will appear.

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)".]

(0:00 - 23:59)
(AM 12:00 - PM 11:59)
(AM 0:00 - PM 11:59)

2

4

5

3

6

5

Turn the jog dial to adjust the hour and within 2 minutes, press the
ENTER button.

When the 12-hour display is selected, "AM" will change automatically to "PM".

6

Turn the jog dial to adjust the minutes and within 2 minutes, press
the ENTER button.

The hour will not advance even if minutes advance from "59" to "00".
The clock starts from "0" second. (Seconds are not displayed.) The time display
will disappear after a few seconds.

To confirm the time display:
[When the unit is in the stand-by mode]

Press the DISPLAY button on the remote control. The
time display will appear for about 3 seconds.

[When the power is on]

Press the MENU button. The time display will appear
for about 10 seconds.

Note:

"CLOCK" will appear or time will flash at the push of the DISPLAY button when the
AC power supply is restored after a power failure or unplugging the unit. Reset the
clock as follows.

To reset the clock:
[When time is flashing]

1 Press the ON/STAND-BY button.
2 Press the MENU button.
3 Press the ENTER button.
4 Perform "Setting the Clock" from step 5.

[When "CLOCK" appears]

Perform "Setting the Clock" from the beginning.

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

1 Clear all the programmed contents. [Refer to "Clearing all the memory (reset)".]
2 Perform "Settin

the Clock" from the beginning.

– 8 –

Troubleshooting Chart

y

CD-CH1500H/CD-CH1500W

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 authorised
SHARP dealer or service centre.

General

Symptom Possible cause

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

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

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

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?

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 vibrations?
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/AM loop aerial placed properly? Move the

AC power lead away from the aerial if located near.

Cassette deck

Symptom Possible cause

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

proper sound quality.
Cannot erase completely.
Sound skipping. Is there any slack? Is the tape stretched?
Cannot hear treble. Are the capstan, pinch roller, or heads dirty?
Sound fluctuation.
Cannot remove the tape. If a power failure occurs during playback, the heads

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

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

Remote control

Symptom Possible cause

The remote control does not
operate.

Is the AC power lead of the stereo system plugged
in?

Is the battery polarity correct?
Are the batteries dead?
Is the distance or angle incorrect?
Does the remote control sensor receive strong

light?

Condensation

Sudden temperature changes, storage or operation in an extremely humid environ­ment may cause condensation inside the cabinet (CD pickup, tape heads, etc.) or on
the transmitter LED 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 LED with a soft cloth before operating
the unit.

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.

Clearing all the memory (reset)

If neither operation above restores the unit, clear all the memory by following
the instructions below.

1 Press the ON/STAND-BY button to enter the power stand-by mode.
2 Whilst pressing down the VOLUME button, press the ON/STAND-BY button

until "ALL CLEAR" 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 transport safety screw in order to prevent
damage during transportation.

1 Press the ON/STAND-BY button to turn the power on.
2 Remove all discs from the unit, close the disc tray. "CD NO DISC" is displayed.
3 Press the ON/STAND-BY button to enter the stand-by mode. "GOOD-BYE" is dis-

played.
4 When "GOOD-BYE" disappears, unplug the AC power lead from the AC socket.
5 Insert the transport safety screw into the back of the unit and tighten it with a flat-

blade screwdriver.

Remote Control

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 sensor

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

Notes concerning use:

Replace the batteries if the operating distance is reduced or if the operation
becomes erratic. Purchase 2 "AA" size batteries (UM/SUM-3, R6, HP-7 or similar).
Periodically clean the transmitter on the remote control and the sensor on the ste­reo system with a soft cloth.
Exposing the sensor on the stereo system to strong light may interfere with opera­tion. Change the lighting or the direction of the stereo system.
Keep the remote control awa

from moisture, heat, shock, and vibrations.

– 9 –

CD-CH1500H/CD-CH1500W

Using the Radio Data System (RDS) (CD-CH1500H Only)

RDS is a broadcasting service which a growing number of FM stations provide.
These FM stations send additional signals along with their regular programme
signals. They send their station names, and information about the type of pro­gramme such as sports or music, etc.

When tuned to an RDS station, "RDS" and the station name will be displayed.
"TP" (Traffic Programme) will appear on the display when the received broadcast car­ries traffic information, and "TA" (Traffic Announcement) will appear whilst a traffic
information is on air.
"EON" will appear whilst the EON (Enhanced Other Networks information) data is
broadcast.
"PTYI" (Dynamic PTY Indicator) will appear whilst the Dynamic PTY station is
received.
"RT" (Radio Text) will appear whilst the unit receives the Radio text data.
"CT" (Clock Time) will appear whilst the unit receives the RDS CT data.

You can control the RDS by using the remote control only.

Information provided by RDS

Each time the DISP MODE button is pressed, the display will switch as follows:

Station name (PS) Frequency

Programme type (PTY) RDS clock time

(8 Languages)

Programme type (PTY) Clock-time and date (CT)

(English fixed)

Radio text (RT)

When you are tuning in to a station other than an RDS station or to an RDS station
which sends weak signal, the display will change in the following order:

Date (for 3 seconds)

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

You can search for and receive the following PTY, TP and TA signals.

NEWS Short accounts of facts, events and publicly expressed views, reportage

AFFAIRS Topical programme expanding or enlarging upon the news, generally in

INFO Programmes whose purpose is to impart advice in the widest sense.
SPORT Programme concerned with any aspect of sport.
EDUCATE Programme intended primarily to educate, of which the formal element is

DRAMA All radio plays and serials.
CULTURE Programmes concerned with any aspect of national or regional culture, in-

SCIENCE Programmes about the natural sciences and technology.
VARIED Used for mainly speech-based programmes usually of light-entertainment

POP M Commercial music, which would generally be considered to be of current

ROCK M Contemporary modern music, usually written and performed by young mu-

EASY M Current contemporary music considered to be "easy-listening", as op-

LIGHT M Classical music for general, rather than specialist appreciation. Examples

CLASSICS Performances of major orchestral works, symphonies, chamber music,

OTHER M Musical styles not fitting into any of the other categories. Particularly used

WEATHER Weather reports and forecasts and meteorological information.
FINANCE Stock Market reports, commerce, trading, etc.
CHILDREN For programmes targeted at a young audience, primarily for entertainment

and actuality.

different presentation style or concept, including debate, or analysis.

fundamental.

cluding language, theatre, etc.

nature, not covered by other categories. Examples include: quizzes, panel
games, personality interviews.

popular appeal, often featuring in current or recent record sales charts.

sicians.

posed to Pop, Rock or Classical, or one of the specialised music styles,
Jazz, Folk or Country. Music in this category is often but not always, vocal,
and usually of short duration.

of music in this category are instrumental music, and vocal or choral
works.

etc., and including Grand Opera.

for specialist music of which Rhythm & Blues and Reggae are examples.

and interest, rather than where the objective is to educate.

NO PS NO PTY

NO RT

FM 98.00 MHz NO CT

SOCIAL Programmes about people and things that influence them individually or in

RELIGION Any aspect of beliefs and faiths, involving a God or Gods, the nature of ex-

PHONE IN Involving members of the public expressing their views either by phone or

TRAVEL Features and programmes concerned with travel to near and far destina-

LEISURE Programmes concerned with recreational activities in which the listener

JAZZ Polyphonic, syncopated music characterised by improvisation.
COUNTRY Songs which originate from, or continue the musical tradition of the Amer-

NATION M Current Popular Music of the Nation or Region in that country's language,

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, usu-

DOCUMENT Programme concerned with factual matters, presented in an investigative

TEST Broadcast when testing emergency broadcast equipment or receivers.
ALARM ! Emergency announcement made under exceptional circumstances to give

NONE No programme type (receive only).
TP Broadcasts which carry traffic announcements.
TA Traffic announcements are currently on air.

Note:

When you select a programme in the EON stand-by mode, the unit will display "TI"
instead of "TA".

groups. Includes: sociology, history, geography, psychology and society.

istence and ethics.

at a public forum.

tions, 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.

might participate. Examples include, Gardening, Fishing, Antique collect­ing, Cooking, Food & Wine, etc.

ican Southern States. Characterised by a straightforward melody and nar­rative story line.

as opposed to International 'Pop' which is usually US or UK inspired and
in English.

ally played on acoustic instruments. The narrative or story may be based
on historical events or people.

style.

warning of events causing danger of a general nature.

– 10 –

System Connections (CD-CH1500W Only)

CD-CH1500H/CD-CH1500W

Setting the AC voltage selector

Check the setting of the AC voltage selector located on the rear panel before plug­ging the unit into an AC 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:

Plug the AC power lead into an AC socket, after any connections.
Unplug the AC power lead from the AC socket if the unit will not be in use for a pro­longed period of time.

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 pressing down the VOLUME button, press the ON/STAND­BY button until "ALL CLEAR" appears.

Caution:

This operation will erase all data stored in memory including clock and timer settings,
and tuner and CD presets.

– 11 –

CD-CH1500H/CD-CH1500W

(C2)x7

ø3x10mm

(C2)x1

ø3x10mm

CD-CH1500H
Only

Main PWB

Front Panel

Tape Mechanism PWB

(D3)x2

Speaker

PWB

(C1)x1

ø3x10mm

(F2)x2

ø3x10mm

(C1)x2

ø3x10mm

Rear

Panel

(D2)x2

ø3x8mm

(F3)x1

ø3x8mm

(F4)x1

(F1)x1

(D1)x1

CD Servo PWB

Power PWB

Power PWB

(F4)x1

(F4)x1

Main
PWB

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-CH1500H/CD-CH1500W

STEP REMOVAL

1 Top Cabinet 1. Screw .................. (A1) x5 12-1

2 Side Panel 1. Screw ..................(B1) x8 12-1

(Left/Right)

3 Rear Panel 1. Screw ................. (C1) x3 12-2

4 Front Panel 1. Flat Cable........... (D1) x1 12-2

5 Sub Trans PWB 1. Screw .................. (E1) x3 12-2

6 Main PWB 1. Flat Cable............ (F1) x1 12-2

7 Power PWB/ 1. Socket ................ (G1) x1 13-1

Speaker PWB (For CD-CH1500H)

8 Tape Mechanism 1. Open the cassette holder. 13-2

9 CD Switch PWB 1. Socket ................. (J1) x1 13-2

10 Switch PWB 1. Screw .................. (K1) x1 13-2

11 Headphones PWB 1. Screw .................. (L1) x1 13-2

12 CD Changer Door 1. Screw ................. (M1) x3 13-2

Panel/Control Panel

13 Motor PWB 1. Solder..................(P1) x2 13-2

14 CD Changer Door 1. Screw ................. (Q1) x4 13-3

Panel

15 Control Panel 1. Screw ................. (R1) x6 13-3

16 Control PWB 1. Screw .................. (S1) x5 13-4

17 Jog PWB 1. Knob .................... (T1) x1 13-4

18 LED B PWB 1. Screw ................. (U1) x3 13-4

19 Cassette Holder 1.

Cover 2. Screw ..................(V1) x4

20 Display PWB/ 1. Screw .................(W1) x4 13-6

LED A PWB 2. Hook................... (W2) x2

PROCEDURE

2. Screw ................. (C2) x8

(For CD-CH1500H)

2. Screw ................. (C2) x7

(For CD-CH1500W)

2. Screw ................. (D2) x5

3. Socket ................ (D3) x6

2. Socket ................. (E2) x5

2. Screw ..................(F2) x2

3. Screw ..................(F3) x1

4. Socket ................. (F4) x4

1. Socket ................ (G1) x2

(For CD-CH1500W)

2. Screw ................. (G2) x2

2. Screw ................. (H1) x4

2. Screw .................. (J2) x6

3. Hook .................... (J3) x2

2. Hook ....................(K2) x1

2. Bracket ................ (L2) x1

2. Screw ................. (M2) x2

2. Socket ................. (S2) x1

2. Screw ..................(T2) x5

Open the cassette holder cover

3. Display Panel ......(V2) x1

4. Hook ....................(V3) x4

FIGURE

. 13-5

CD-CH1500H/CD-CH1500W

Illustration: CD-CH1500H

Front Panel

(A1)x2

ø3x16mm

(B1)x4

ø3x10mm

Speaker

(E2)x3

Sub Trans

PWB

(E1)x3

ø3x8mm

– 12 –

Side Panel(Right)

PWB

Top Cabinet

Figure 12-1

(F4)x1

(E2)x2

(D2)x1

ø3x8mm

Figure 12-2

Power PWB

(D2)x1

ø3x8mm

Lug Wire

(A1)x2

ø3x16mm

Rear Panel

Main PWB

(D3)x4

Side Panel

(Left)

(A1)x1

ø3x10mm

(B1)x4

ø3x10mm

(D2)x1

ø3x8mm

CD-CH1500H/CD-CH1500W

(S1)x5

ø2.6x10mm

(S2)x1

(U1)x2

ø2.6x10mm

(U1)x1

ø2.6x10mm

(T2)x5

ø2.6x10mm

Control Panel B

Control PWB

Control Panel A

LED B PWB

LED Holder

Jog PWB

(T1)x1

(W1)x4

ø3x14mm

(W2)x1

LED A
PWB

Display PWB
Spring

Cassette
Holder Cover

Display PWB

(W2)x1

Speaker

PWB

Power PWB

CD Changer
Block

Front Panel

ø3x10mm

(J1)x1

(J2)x6

ø3x10mm

(M2)x1

ø3x20mm

(P1)x2

Motor

PWB

(M1)x3

ø3x10mm

(M2)x1

ø3x20mm

(Q1)x2

ø2.6x10mm

(R1)x2

ø2.6x12mm

Control Panel

(H1)x4

(J3)x1

CD Changer

Door Panel

Figure 13-1

(K1)x1

ø2.6x10mm

Figure 13-2

Figure 13-3

(G2)x1

ø3x10mm

Tape
Mechanism

(L1)x1

ø3x10mm

(R1)x2
ø2.6x12mm

Main
Chassis

(L2)x1

ø2.6x12mm

(G2)x1

ø3x10mm

(G1)x1

(G1)x1

CD-CH1500W
Only

Cassette

Holder

Open

CD Switch
PWB

(J3)x1

CD Changer
Door Panel

(K2)x1

Switch PWB

Headphones
PWB

(Q1)x1

ø2.6x10mm

(R1)x2

(Q1)x1

ø2.6x10mm

Lug Wire

– 13 –

(V1)x4

ø2.6x12mm

Open

(V2)x1

Figure 13-4

(V3)x4

Front Panel

Cassette
Holder Cover

Figure 13-5

Figure 13-6

CD-CH1500H/CD-CH1500W

CD-CH1500H/CD-CH1500W

(CD CHANGER MECHANISM UNIT)

STEP

1 Top Cabinet 1. Screw .................. (A1) x5 12-1

2 Side Panel 1. Screw ..................(B1) x8 12-1

3 Rear Panel 1. Screw ................. (C1) x3 12-2

4 Front Panel 1. Flat Cable........... (D1) x1 12-2

5 CD Changer 1. Flat Cable............(X1) x1 14-1

6 CD Servo PWB 1. Screw ..................(Y1) x4 14-2

7 CD Mechanism 1. Screw .................. (Z1) x4 14-2

REMOVAL PROCEDURE FIGURE

(Left/Right)

2. Screw ................. (C2) x8

(For CD-CH1500H)

2. Screw ................. (C2) x7

(For CD-CH1500W)

2. Screw ................. (D2) x5

3. Socket ................ (D3) x6

Mechanism 2. Screw ..................(X2) x2

3. Screw ..................(X3) x5

(Note) 2. Socket .................(Y2) x4

3. Flat Wire.............. (Y3) x2

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.

CP-RW5500H/CP-RW5500W

STEP

1 Front Panel 1. Net ...................... (A1) x1 14-3

2

3 Tweeter 1. Screw .................(C1) x2 14-4

REMOVAL PROCEDURE FIGURE

2.

Catching Holder ....

(A2) x4

3. Screw ................. (A3) x4

Woofer/Sub Woofer

1. Screw ................. (B1) x8 14-4

(A1)x1

(A2)x4

(A3)x4

ø3x12mm

Front Panel

(X2)x1

ø3x10mm

Bottom Side

(X3)x3

ø3x10mm

(X2)x1

ø3x10mm

CD Changer

Mechanism

(X3)x2

ø3x10mm

(Y1)x4

ø3x10mm

(Y2)x1

CD Servo PWB

(Z1)x4

ø2.6x10mm

Figure 14-1

(Y2)x2

Front Side

Main Chassis

(Y3)x1

(Y3)x1

(Y2)x1

CD Changer

Mechanism

CD Servo PWB

(X1)x1

Woofer
(B1)x4

ø4x16mm

Tweeter

(C1)x2

ø3x10mm

(B1)x4

ø4x16mm

Figure 14-3

Sub Woofer

Figure 14-4

CD Mechanism

Figure 14-2

– 14 –

REMOVING AND REINSTALLING THE MAIN PARTS

Main Belt
(C1)x1

FF/REW Belt
(C2)x1

Motor

Cam Gear

TAPE MECHANISM SECTION

Perform steps 1 to 4 and 8 of the disassembly method to
remove the tape mechanism.

How to remove the record/playback and erase
heads (See Fig. 15-1)

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.

How to remove the pinch roller (See Fig. 15-2)

1. Carefully bend the pinch roller pawl in the direction of the
arrow <A>, and remove the pinch roller (B1) x 2 pcs., in the
direction of the arrow <B>.

Note:

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

Erase
Head

(Left)

Pinch
Roller
Pawl

CD-CH1500H/CD-CH1500W

Record/
Playback
Head

(A1)x2
Ø2 x 6mm

Figure 15-1

(Right)

Pinch
Roller
Pawl

How to remove the belt (See Fig. 15-3)

1. Remove the motor.

2. Remove the main belt (C1) x 1 pc., from the motor side.

3. Remove the FF/REW belt (C2) x 1 pc.

How to remove the motor (See Fig. 15-4)

1. Remove the belt.

2. Remove the screws (D1) x 2 pcs., to remove the motor.

Pull

<A>

<B>

Pinch
Roller

Pull

(B1)x2

Figure 15-2

Figure 15-3

Motor

Pull

<B>

<A>

Pull

– 15 –

(D1)x2
Ø 2.6 x 5mm

Figure 15-4

CD-CH1500H/CD-CH1500W

MOB1

MAIN CAM

NSW1

PICKUP IN

MOTOR

M

NM1

SPINDLE

MOTOR

M

NM2

SLED

MOTOR

M

MOB2
TRAY

MOTOR

M

Q3

VOLTAGE

CONSTANT

17
18
19
20

21

22
16

26
32

28
29

30
31

Q5

SL+
SL–
SP–
SP+

POWVCC

8

7

+5V

SWITCHING

IC5

BA5939S

PREVCC

LOADING1

VCC

23

11

15
14
13
12
10

9
6
5

TR–

4

TR+

3

FOCUS/TRACKING/

SPIN/SLED DRIVER

FO+

2

FO–

1

LOADING2

VCC

POWVCC

PREVCC

MUTE

24

27

25

FOCUS COIL

TRACKING COIL

12

11

9

TEO

SBAD

FEO

VRO

GVSW

14

13

15

TEB

8

17

7

SEL

RFIS

RFRP

18

LASER

DRIVER

Q4

6

5

TNI

MDI

LDO

RFGC

RFGO

20

19

Q1

4

21

+3.3V

3

TPI

AGCI

22

2

FPI

RFO

23

1

FNI

RFN

24

VCC

GND

IC6

AMP.

TA2147F

SERVO PRE

PICKUP UNIT

+5V

3.3V

X1

16.934MHz

CD/CD-RW_SEL

33
34

36
37
38
40
41

46
47

6
15

25

39
43
48

51

FOO
TRO

RFGC
TEBC
SEL
FMO
DMO

XI
XO

DVDD
PVDD
AVDD
AVDD3
DVDD
XVDD
DVDD

29

28

30

31

FEI

TEI

SBAD

RFRP

IC2

TC9490F

SERVO/SIGNAL

CONTROL

LO

BUS2

BUS1

BUS0

RO

50

58

59

53

57

60

24

RFI

BUCK

BUS3

61

62

35

/CCE

63

26

RFCT

VREF

/RST

+5V

20

19

PVREF

64

18

LPFO

VDD

17

LPFN

TMAX

/HSO

DVSS
AVSS

DVSS

TESIN

XVSS
DVSS
DVSS

16

PDO

VSS

13

7

22

42
44
45

49
54
56

SWB101-SWB110

KEY

32

33

CD_+B

30

31

CD_+B

CD_GND

28

27

29

CD_GND

CD_R-CH

C-MO_FOR

26

24

23

25

PU-IN

A_GND

CD_L-CH

C-MO_REV

22

20

21

19

BUS1

BUS0

T-MO_REV

T-MO_FOR

18

17

BUS2

CD-RW

TO MAIN PWB

16

BUS3

(IC901)

14

15

/CCE

BUCK

13

/RST

12

11

10

TRAY_C

CD FUNC

9

8

TRAY_B

TRAY_A

CANA_A

7

Figure 16 BLOCK DIAGRAM (1/6)

– 16 –

5

6

CANA_B

CANA_C

CANA_D

432

CANB_A

CANA_E

CNP1

1

GND

CANB_B

CD-CH1500H/CD-CH1500W

PNL_CL

MO700

CONTROL

PANEL MOTOR

OPEN/CLOSE

MOTOR_–

M

SW705

TAPE

MOTOR

F_REC

R_REC

11

12

10

12

12

21

3

SIDE-A

SIDE-B

g
h
i

TO AUDIO SECTION

O
Q

P
X
Y
U
V
W

T

TO AUDIO SECTION

R

S

d

f

c

A_GND2

b

a

TO AUDIO SECTION

1

2

3

4

5

6

7

CD_GND

8

CD_GND

9

CNP806

10
11

M_GND

12

M_GND

13

PWB

14

TO POWER

15

BI960

1
2
3
4
5
6

CNP807

AC_RLY CTL

7
8

BI950

PWB

TO POWER

1
2
3
4
5
6
7

IC701

8
9

PNL_OP

MOTOR_+

OPEN_SW

CLOSE_SW

D_GND

5

LCD DISPLAY

SOLENOID

M

+

–

PLAY

SWITCH

+MTR

–COM

+5V SENSOR

CST_SW

8

5

6

7

3

4

9

5

8

7

6

10

9

4

Q908

+5V

+B

Q909

MOTOR DRIVER

CST-SW

MOTOR

CD_L
A_GND
CD_R

PB_MUTE

CD-R_SEL

CD_MUTE

VSM

AUX_SEL

C2B_DI

C2B_CE

C2B_DO

C2B_CL

S-MUTE

D_GND

A_+B

A_-B

R_CH

L_CH

L CH

A_GND

R CH

A_GND

A_GND
A_+10V
A_+10V

CD_+B
CD_+B

M_+B
M_+B

FAN_CTL

SP_DET
SP_RLY

UN_SW 5V

D_GND
D_GND

A_-B

8

8

7

7

6

6

5

5

4

4

CNP102

3

3

2

2

1

1

PWB

TO POWER

BI940

CNS940

TAPE_L

l

TAPE_R

m

REC_LCH

j

REC_RCH

k

TO AUDIO SECTION

m

A_GND

IC701

TA7291S

LOADING

MOTOR DRIVER

SCL

SDA

A +B

D +B

DIMMER

D GND

Q707

VDD

VSS

VLCD

1

4

2

5

3

CNP701

1

LCD720

SENSOR OUT

+SOL

PLAY SW

2

1

1

1

11

12

+B

Q907

CAM-SW

+B

+B

REC_BIAS
REC_CONT
REC_MUTE
REC_LCH
REC_RCH
A_GND
TAPE_R
TAPE_L

LED735,
LED737,
LED738

FFC970

CNP970

Q905

Q906

DRIVER RUN PULSE

SOLENOID

RUN_PUL

SOL

+B

7654321

A_+B

KEY3

KEY2

TO CD SERVO PWB

1

DRIVER

SOLENOID

2

3

CD_+B

CD_+B

4

5

CD_GND

CD_GND

8

6

7

CD_R

C-MO_REV

C-MO_FOR

10

9

PU-IN

A_GND

12

11

CD_L

T-MO_FOR

13

14

15

CD_BUS0

T-MO_REV

16

17

CD-RW

CD_BUS2

CD_BUS1

19

18

CD_BUS3

CD_BUCK

+B

RESET

Q901

+B

3

2

IC905

1

IC905

KIA7042AP

RESET

+B
+B

+B

+B

1

2

IC913

IC913

3

KIA7805AP

VOLTAGE REGULATOR

+B

+B

Q955

LEVEL_R

Q954

D_+B

+B

KEY4

JOG-A

D_GND

CNP934

JOG-B

11 10

KEY0

KEY1

987654321

CK

LCK

DATA

POW_IND

D_GND

POW_KEY

REMOCON

D_+B

A_+B

+B

CNP931

Figure 17 BLOCK DIAGRAM (2/6)

– 17 –

28

22

20

23

21

26

24

29

27

25

CD_RES

CD_CCE

FH_T-SW_B

FH_T-SW_A

FH_T-SW_C

FH_A-SW_A

FH_A-SW_B

FH_A-SW_C

46

47

49

50

48

AVDD A

51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80

1

JOG DIAL

JOG-B

Vref 0

PROTECT

KEY 0

SYS STOP

KEY 1

49 SP RLY

KEY 2

50 POWER KEY

KEY 3

KEY 4

LEVEL_L

VSM

LEVEL_R

AVSS

AVref1

MICROCOMPUTER

TUNER DI
TUNER DO

83 FH T-SW C

TUNER CL

82 FH T-SW B
81 FH T-SW A

LCD-RW

LCD-E
FH A-SW E
FH A-SW D
FH A-SW C
FH A-SW B
FH A-SW A

FH C-SW B

82

81

84

85

83

2

3675

4

KEY2

KEY3

KEY4

JOG-A

JOG-B

D_GND

JOG701

SW770,SW772,

SW773,SW778,

SW784,SW786

33

31

CNP901

32

30

GND

FH_A-SW_E

FH_A-SW_D

FH_C-SW_A

FH_C-SW_B

X902

32.768 kHz

43

40

45

41

42

44

XT1

XT2

JOG-A

RESET

REMOCON

IC901

IX0417AW

SYSTEM

CD CCE

CD BUS3

CD BUCK

CD BUS2

CD BUS1

FH C-SW A

91

89

88

87

86

90

LED_1

LED759

LED_2

LED758

LED_3

LED757

LED_4

LED756

LED_5

LED755

LED_6

LED754

LED_5

CNS770

LED772~

LED776

A_+B

SW750~SW758

SW761~SW764

X901

600 kHz

39

VSS

CD BUS0

92

DRIVER

LED_4

LED_3

LED

DRIVER

+B

LED770

X1

CD RESET

+B

38

36

35

37

X2

VDD

C FUTA OP

30 LCD R/W
29 LCD RS
28 POWER RLY
27 N.C.
26 LCD DB7

3 REC BIAS
2 REC
1 PB MUTE

FH M A+

CD RW

CD PICK IN

93

94

95

96

LED

Q724

LED

DRIVER

Q722

Q720

LED_2

LED_1

LED_EG

Q708

33

34

32

SYS MUTE

C FUTA CL

TIMER LCD

BACK LED CONT
LCD DB6

LCD DB5
LCD DB4

TEST/Vpp

LCK2
LCK1

CLK
DATA
SPAN

CD MUTE

DEST_IN

CST SW
CAM SW
B-FP SW
A-FP SW

VDD
RUN PULSE
DEST_OUT2

T-SOL

T-MOTOR

DEST_OUT1

FH M B+

FH M A-

FH M B-

REC MUTE

97

98

99

LED

DRIVER

Q723

Q721

+B

SW711,SW712,

SW710,

SW730~SW735

SW720~SW725

KEY0

KEY1

9

1011

31

LCD E

CE

VSS

100

LED

DRIVER

Q725

LCK

8

30
29
28
27
26
25
24
23
22
21
20

19
18
17
16
15
14
13
12
11
10

9

8

7

6

5

4

3

2

1

10

+B

9

CK

DATA

5 6 7

CD-CH1500W

ONLY

SW901

SPAN SELECTOR

+B

INPUT/OUTPUT

14

11

1312

Q9

Q8Q7Q6

Q5

Q0

Q3

Q4Q2Q1

8

6

5

7

SW701

POWER

D_+B

POW_IND

POW_KEY

REMOCON

D_GND

1

4

2

3

IC912

BU2092F

EXPANDER

4

8

9

6

5

7

CD-SW

CD-R_SEL

SW10

SW5

SW7

SW8

SW9

11

13

10

12

14

15

+B

16

18

15

17

__

OE

Q11

Q10

VDD

VSS

LCK

CLOCK

DATA

4 3 2 1

LED731

RX701
REMOTE
SENSOR

1

2

+B

3

A_+B

CNS720

1

2

3

LCK

CLK

VSS

DATA

VDD

OE

SW12

SW11

18

17

16

+B

1

2

3

UNA902

OPTICAL FIBER

DATA LINK

+B

IC702

BU2092F

EXPANDER

INPUT/OUTPUT

+B

CD-CH1500H/CD-CH1500W

E

H

H

C

Y

E

FM ANTENNA

TERMINAL

AM LOOP
ANTENNA

SO301

L341

BALUN

8

FM FRONT END

2 6 7

AM RF

AM
TRACKING

T302

FE301

3 4

FM

OSC

T306

+B

1
5

VT

AM BAND
COVERAGE

+B

FM IF

CF301

+B

FM +B

VOLTAGE

REGULATOR

CE

MPX

2 4 3

FM IF

AMP
Q301

VR351

FM MUTE

LEVEL

FMOSC

Q360

FM

2021222324

DI

CL

DO

IN

RDS DECORDER

VDDA

VSSA

+B

FM IF
CF302

T351

FM IF IN

1 2 3 4 5 8 9

AM OSC

IN

OUT

X352

4.5MHz

20 22

1

OSC

7

LC72722

PLL (TUNER)

ICT21

7

FM IF

CF351

+B

CF352

AM IF

REG INOUT VCC

FM IF DET./FM IF MPX./AM IF

GND

IC303

LA1832S

17 19 20 18 16

67

STEREO

AM RF IN

IN

FM IN

AM

4 5 6

DI

SD

IF OUT

MONO/ST

IF IN

FM MONO/ST

21

CL

DO

Q371

SWITCHING

AFC

15 16 11 10 13 12

IC302

LC72131

3

CE

13121415

XIN

VSSD

VDDD

XT21

XOUT

4.332MHz

8

X351

456kHz

9

L354

L.P.F

FM/AM

MPX

OUT

141211101321222324

15

SWITCHING

AMP.

QT21

IN

RL

Q351

FOR CD-CH1500H

FM

AM

CNP303

1
2
3

FM/AM

LOOP

ANTENNA

FOR CD-CH1500W

B.P.F

BF301

1

FM FRONT END

2 3 4 5

L312 T311

FM RF

AM RF

AM
TRACKING

T302

IC301

OSC BUFF

7 8

FM

OSC

T306

6

9

VT

Q302

AM BAND
COVERAGE

+B

FM IF
T312

+B

FM +B

Q360

VOLTAGE

REGULATOR

+B

FM MUTE

FMOSC

+B

T351

AM IF

1 2 3 4 5 8 9

REG INOUT VCC

AM OSC

IN

AFC

OUT

AM RF IN

IN

20 222115 16 11 10 13 12

1

OSC

AM

IC302

LC72131

PLL (TUNER)

VR351
LEVEL

FM

FM IF

CF302

FM IF IN

X352

4.5MHz

7

3 4 5 6

CE

CF352

STEREO

FM IN

DI

SWITCHING

FM IF

CF351

+B

GND

67

SD

IF OUT

MONO/ST

IF IN

FM MONO/ST

CL

DO

Q371

X351

456kHz

17 19 20 18 16

FM/AM

MPX

OUT

IN

141211101321222324

15

RL

SWITCHING

8

9

Q351

ERAS

HEAD

L-C
R-C

RE
PLA

H

Figure 18 BLOCK DIAGRAM (3/6)

– 18 –

C2B_DO

C2B_CL
C2B_DI
C2B_CE

1
3
7
9

4

TO MICOM SECTION

D_GND

C2B_DI

C2B_CE

C2B_DO

C2B_CL

R

S

U

T

W

V

IC102

BA3126N

HEAD

SELECTOR

SWITCHING

Q101

S-MUTE

O

2
5

8

6

Q102

PB_MUTE

TUNER

CD-CH1500H/CD-CH1500W

Q509

TAPE_L

JK501

AUX IN

SYSTEM

MUTE

Q501
Q502

REC_R-CH

R-CH
L-CH

L_CH

TAPE_L-CH

TAPE_R-CH

A_GND

REC_R-CH

REC_L-CH

REC_MUTE

REC_CONT

REC_BIAS

CD_L

A_-B

A_+B

CNP102

l

k

g

f
d
a

1
2
3
4
5
6
7
8

SECTION

TO MICOM

SECTION

TO MICOM

SECTION

TO MICOM

CNS940

FROM MAIN PWB

Q507
Q508

REC_L-CH

+B

-B
8

4

7

1

IC503

NJM4558M

MOTOR DRIVER

IC502

LC75341

AUDIO

3

CD

L

12

13

R

TAPE

L

10

15

R
L

AUX

9

16

R

LSEL0

8

REC_L-CH

LIN

7

4

L

21

R

VSS

3

CE

2

DI

1

SWITCHING

Q119
Q120

REC MUTE

5

L

11
14

R

17

RSEL0

18

RIN

PROCESSOR

+B

VDD

23

CLK

24

L-CH

ERASE

HEAD

L-CH
R-CH

RECORD/

PLAYBACK

HEAD

REC

P.B

AC BIAS

5

3

L NF

20

22

R NF

REC

L

R

8

7

18

H/N

REC

16

9

6

L REC

POP REDUCE

R NF

L NF

17

1211

R REC

PLAYBACK AND

RECORD/PLAY BACK

P.B

L

R

21

4

13

VCC

P.B

2324

1

2

LR

Figure 19 BLOCK DIAGRAM (4/6)

– 19 –

IC101

AN7345K

AMP.

SWITCHING

BIAS OSC.

Q114

Q116

A_+10V

M_+10V

Q115

BIAS

A_GND

BIAS_GND

A
B
C
D

SECTION

TO POWER

CD-CH1500H/CD-CH1500W

CD-CH1500H

15

14

+

–

13

Ch2

12
11

Out

10

Ch2

–Vcc

9

8

+Vcc

IC202

POWER AMP.

STK40204(2Ch)

Out

7

Ch2

6
5

4

–

+

Ch1

3

2

1

15

14

+

–

13

Ch2

12

11

Out

10

Ch2

–Vcc

9

8

IC201

+Vcc

POWER AMP.

STK40271(2Ch)

7

Out

6

Ch1

5
4

–

+

Ch1

3
2
1

Q200

M

+

DRIVER

FAN MOTOR

-B

+B

-B

+B

MO200

FAN

MOTOR

Q212

Q210

Q208

Q204

Q206

Q202

DRIVER

FAN MOTOR

Q207

Q203

Q205

Q201

JK701
HEADPHONES

SP L-CH

-

GND

MAIN

SP L-CH

+

SP L-CH

-

GND
SP L-CH

+

SP R-CH

-

+B

SP_RLY

SP_DET

UN_SW 5V

4 6

3

BI950A

TO MAIN PWB

+

-

+

M+10V

D_GND

D_GND

GND
SP R-CH

SP R-CH
GND

SP R-CH

RY202

Q209

RY201

SP RELAY

ON-OFF

Q211

Q813

I

C203

KIA4558P

OPE AMP.

1

+

–

IC203

3 2

CNP806

7

4

-B

+

–

5

6

+B

+B

A_+10V

A_+10V

A_GND

L-CH

1

A_GND2

R-CH

2

A_GND

4 3

5

6

7

TO MAIN PWB

CD_GND

BI960

CD_GND

9 8

8

+B

+B

CD_+B

11

10

+B

CD_+B

M_GND

M_GND

13

12

+B

+B

M_10V

14

Q812

M_10V

15

FAN_CTL

1

SUB
WOOFER

MAIN

F805

T4A L 250V

D816

VOLTAGE

REGULATOR

-B

-8V

AC_RLY CTL

TO DECK SECTION

7 2 5

8

CNP807

SO201
SPEAKER
TERMINALS

F806

T4A L 250V

+B

HIGH

A_+10V

A_GND

A

B

Q805

F803

T5A L 250V

D817

-B

+B

IC802

+B

KIA7810AP

VOLTAGE

REGULATOR

1

IC802

3

+B

M_+10V

BIAS_GND

C

D

RY801

F804

T5A L 250V

LOW

VOLTAGE

REGULATOR

2

-B

Q806

+B

Q809

+B

AC POWER

SUPPLY CORD

F807

T3.15A L 250V

T.F.

MAIN POWER

TRANSFOMER

F808

T2A L 250V

-B

Q810

VOLTAGE

REGULATOR

AC 230 V, 50 Hz

K801 K802

AC LINE

FILTER

T801

+B

+B

F801

T2A L 250V

-B

D804-D807

+B

Q807

RELAY

DRIVER

L802

1

VOLTAGE

3

CONSTANT

REGULATOR

+B

MICON +5V

2

IC808

T802

SUB POWER

TRANSFORMER

D812-D815

Figure 20 BLOCK DIAGRAM (5/6)

– 20 –

CD-CH1500W

CD-CH1500H/CD-CH1500W

MO201

FAN

M

MOTOR

+

Q200

15

14

+

–

13

Ch2

12
11

Out

10

Ch2

–Vcc

9

8

+Vcc

IC202

POWER AMP.

STK40204(2Ch)

Out

7

Ch2

6
5

4

–

+

Ch1

3
2

1

15

14

+

–

13

Ch2

12

11

Out

10

Ch2
–Vcc

9

8

IC201

+Vcc

POWER AMP.

STK40271(2Ch)

7

Out

6

Ch1

5
4

–

+

Ch1

3
2
1

M

+

DRIVER

FAN MOTOR

-B

+B

-B

+B

MO200

FAN

MOTOR

Q212

Q210

Q215

Q811

Q208

Q204

Q206

Q202

FAN MOTOR

FAN

PROTECT

Q207

Q203

Q205

Q201

DRIVER

+B

JK701
HEADPHONES

SP L-CH

-

GND

MAIN

SP L-CH

+

SP L-CH

-

GND

SP L-CH

+

SP R-CH

-

+B

SP_RLY

SP_DET

UN_SW 5V

4 6

3

BI950A

TO MAIN PWB

+

-

+

M+10V

D_GND

GND
SP R-CH

SP R-CH
GND

SP R-CH

D_GND

RY202

Q209

RY201

SP RELAY

ON-OFF

Q211

Q813

I

C203

KIA4558P

OPE AMP.

1

–

IC203

+

3 2

CNP806

7

4

-B

+

–

6

5

+B

+B

A_+10V

A_+10V

A_GND

L-CH

1

A_GND2

R-CH

2

A_GND

4 3

5

6

7

BI960

TO MAIN PWB

CD_GND

CD_GND

9 8

8

+B

CD_+B

10

+B

M_GND

CD_+B

11

12

M_GND

13

+B

+B

M_10V

15

14

Q812

M_10V

FAN_CTL

1

SUB
WOOFER

MAIN

230-240V

F805

T4A L 250V

D816

VOLTAGE

REGULATOR

-B

-8V

AC_RLY CTL

TO DECK SECTION

7 2 5

8

CNP807

SO201
SPEAKER
TERMINALS

SO801

VOLTAGE

SELECTOR

220V

127V

F806

T4A L 250V

+B

HIGH

Q805

A_+10V

A_GND

A

B

110V

F803

T5A L 250V

D817

-B

+B

IC802

+B

KIA7810AP

VOLTAGE

REGULATOR

1

IC802

3

+B

M_+10V

BIAS_GND

C

D

RY801

F804

T5A L 250V

LOW

REGULATOR

2

-B

Q806

VOLTAGE

+B

Q809

AC 110/127/220/230-240 V,
50/60 Hz

AC POWER

SUPPLY CORD

K801 K802

T.F.

MAIN POWER

TRANSFOMER

F808

T2A L 250V

-B

Q810

VOLTAGE

REGULATOR

+B

T801

-B

+B

F801

T2A L 250V

RELAY

DRIVER

+B

+B

D804-D807

Q807

1

VOLTAGE

3

CONSTANT

REGULATOR

+B

MICON +5V

IC808

2

T802

SUB POWER

TRANSFORMER

D812-D815

Figure 21 BLOCK DIAGRAM (6/6)

– 21 –

CD-CH1500H/CD-CH1500W

CD-CH1500H

A

B

C

D

E

P30 4 - A

F

G

H

C302

0.001

C2B_DI

E

C2B_DO

F

C2B_CL

G

C2B_CE

H

D_GND

I

VSM

J

A_+B

K

TUN_L

L

A_GND

M

TO AUDIO SECTION

TUN_R

N

R399

C389

0.001

C2B_CE
C2B_DI
C2B_CL
C2B_DO

10K

+B

+B

LT22

2.2µH

Q371
KTA1266GR
SWITCHING

C391
47/16

5.6K

R383

+B

2SB562 C

VOLTAGE

REGULATOR

+B

+B

C2B_DO
C2B_CL
C2B_DI
C2B_CE

C301

0.001
D312

F OUT

IF OUT

FE301

FM FRONT END

+B

R373

1K

R371

4.7K

5.6K

R384

5.6K

R385

Q360

+B

RT39
220K

CT26

22P(CH)

XT21

4.332MHz

CT27

22P(CH)

DS1SS133

ANT
GND
GND

VCC

VT

GND

C312
100P

(CH)

R374

1K

R372

1K

D352

DS1SS133

12 11

T5

XOUT

VDDD

XIN

14

13

+B

RT37
220K

D311

DS1SS133

8
7
6
5

4
3

2
1

DT31

10

9

T4

15

C311

100P(CH)

DS1SS133

8

7

VSSD

T6

16

17

CT29

0.022

CT28
100/16

220K

RT36

T1T2T3

T7

D306

C384

0.001

6

18

RT35

C310

CT25
560P

CIN

SYNC

DS1SS133

C341

0.1

C382

15P(CH)

100P(CH)

1K

R376

4.7K

R360

5

4 3

FLOUT

RDS-ID

DO

20

19

RT26

220K

D305

DS1SS133

1
2
3
4
5

6

7
8
9

10
11

PLL(TUNER)

47K

R395

C320

0.047

CT21

CT22

0.022

VSSA

21

1K

L342

2.2µH

X352

4.5 MHz

X OUT

X IN

AOUT

CE
DI
CL

DO

VDD

FM

FM IN

MW

AM IN
MUTE
MO/ST
ST IND

IC302

LC72131

R378

82K

100/16

VDDA

DI

CL

22

23

RT28 1K

RT29 1K

R369

VSS

AIN

PD

NC
IO2
IF IN

LT21

2 1

C321
100/16

82

VT

R345

4.7K

C381

22

12P(CH)

21
20

C393

1/50

19

18

R379

2.2K

+B

17

16

15

C385

14

0.01

13
12

C386

330P(CH)

R392

270

R391

270

RT33

56K

2.2µH
CT23

10/50

RT32

10K

CT24

0.022

ICT21

VREF

MPXIN

LC72722

RDS DECORDER

CE

SYR

24

RT30 1K

C347

0.022

TP301

R382

R381

10K

R380

C380
10/50

DZ351

DZ5.1BSB

CT36

0.022

SO301

FM ANTENNA

TERMINAL

C390

0.001

C345

0.022
C346

0.022

VT_CK

+B

C397

150

0.022

C394
47/16

C392

1.5K

0.001

C387

0.022

L351

100µH

R393

1K

R377

47K

+B

C370

1/50

R389

+B

C395

0.022

C396

CT37

0.1
RT34

QT21

KTC3199GR

AMP.

3.9K

56K

100/16

L352

+B

AM LOOP
ANTENNA

C337

FM IF IN

1

AM MIX OUT

2

REG

3

T351

1K

R352

AM IF IN

4

GND

5
6

SD

STEREO

7

FM DET

8

VCC

9

IF OUT

10
11

PHASE

1/50

C358

PHASE

12

(FM/AM)

18P(CH)

R336

10K

R351

5.6K

AM OSC OUT

FM AFC

AM RF IN

AM LOW CUT

FM/AM OUT

IC303

LA1832S

0.022

C335

330P(CH)

C334

R323

68K

AM OSC IN

VSM

MPX VCO

MPX IN

R-CH OUT
L-CH OUT

MO/ST

AM OSC.

24
23

22
21
20

19
18

17

16

15
14
13

C339

C367

1/50

X351

456 kHz

C368
1/50

C371

1/50
R361

4.7K

T306

AM BAND

COVERAGE fL

VD301

SVC348S

100P(CH)

FM

MUTE

LEVEL

L353
1mH

C362

3.3/50

C363 0.022

C364 4.7/50

C365 0.022

C366 0.001

R350

2.7K

R356

1K

KRC104M

SWITCHING

R344

470

1

2

3

CF301

R347

6.8K

R348

680

R349

Q301

33

2SC380-O

FM IF AMP.

R346

330

100µH

C398

100/16

C355

22P(CH)

2

+B

+B

C351

0.022
C352

10/50
C350

0.047

C319

0.1

2

CF352

C353 0.022

0.022

C354

CF351

C399

0.022

C356

R359

1.8K

CF302

C344

33P(CH)

AM IF

0.001
C357

R355

3.3K

1

3

R353

2.2/50

1
3

270

FM IF DET./FM MPX./AM IF

3.9K

R354

CNP301

+B

+B

C361

0.022

TP302

1/50

C372

R362

4.7K

2

3

Q351

C323

AM ANT.

18P(CH)

C332

C342

0.022

VR351
10K(B)

R358

8.2K

C374

0.022

C373

0.022

R363

1.2K
R364

1.2K

1

R370

1K

12

2

1

L341

BALUN

D301

DS1SS133

D302

DS1SS133

C338

0.001
D303

DS1SS133

D304

DS1SS133

0.022

T302

C330

0.022

C343
33P(CH)

LOW PASS

R357
470K

C331

L354

FILTER

AM TRACKING

fL

0.047

FM SIGNAL

AM SIGNAL

MAIN PWB-A(1/3)

• NOTES ON SCHEMATIC DIAGRAM can be found on page 49.

1

23456

Figure 22 SCHEMATIC DIAGRAM (1/14)

– 22 –