Sharp CD-ES900, CD-ES99 Schematic

CD-ES900/CD-ES99

SERVICE MANUAL

No. S2405CDES900/

MINI COMPONENT SYSTEM

CONTENTS

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications..................................................1-1

[2] Names of parts ...............................................1-2

CHAPTER 2. ADJUSTMENTS

[1] Mechanism section.........................................2-1

[2] Tuner section..................................................2-1

[3] CD section......................................................2-2

[4] CD Changer mechanism section....................2-3

CHAPTER 3. MECHANISM BLOCKS

[1] Caution on disassembly..................................3-1

[2] Removing and reinstalling the main parts .........3-4

MODEL

CD-ES900 Mini Component System consisting of CD-ES900 (main unit) and CP-ES900 (speaker system).

CD-ES900

MINI COMPONENT SYSTEM

MODEL

CD-ES99 Mini Component System consisting of CD-ES99 (main unit) and CP-ES99 (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.

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

[1] Wiring side of P.W.Board................................6-1

[2] Schematic diagram ........................................6-8

CHAPTER 7. FLOWCHART

[1] Troubleshooting..............................................7-1

CHAPTER 8. OTHER

[1] Function table of IC........................................8-1

[2] FL Display ....................................................8-10

Parts Guide

CD-ES99

CHAPTER 4. DIAGRAMS

[1] Block diagram.................................................4-1

CHAPTER 5. CIRCUIT DESCRIPTION

[1] Notes on schematic diagram..........................5-1

[2] Types of transistor and LED ...........................5-1

[3] Waveforms of CD circuit.................................5-2

[4] Voltage............................................................5-3

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

This document has been published to be used

SHARPCORPORATION

for after sales service only. The contents are subject to change without notice.

CD-ES900/CD-ES99

IMPORTANT SERVICE NOTES

BEFORE RETURNING THE AUDIO PRODUCT

(Fire & Shock Hazard) Before returning the audio product to the user, perform the following safety checks.

1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the audio product.

2. Inspect all protective devices such as insulating materials, cabinet, terminal board, adjustment and compartment covers or shields, mechanical insulators etc.

3. To be sure that no shock hazard exists, check for leakage current in the following manner.

* Plug the AC line cord directly into a 120 volt AC outlet. * Using two clip leads, connect a 1.5 kohm, 10 watt resistor paralleled

by a 0.15 µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as conduit or electrical ground connected to earth ground.

* Use a VTVM or VOM with 1000 ohm per volt, or higher, sensitivity to

measure the AC voltage drop across the resistor (See diagram).

* Connect the resistor connection to all exposed metal parts having a

return path to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor.

TO EXPOSED METAL PARTS

VTVM

AC SCALE

1.5 kohms 10 W

0.15 µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

All check must be repeated with the AC line cord plug connection reversed. Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp. AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the audio product to the owner.

– i

CD-ES900/CD-ES99CD-ES900/CD-ES99Service ManualCD-ES900/CD-ES99MarketE

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications

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

CD-ES900/CD-ES99

General

Power source AC 120 V, 60 Hz Power consump-

tion Dimensions Width: 10-1/4" (260 mm)

Weight 22.1 lbs. (10.0 kg)

175 W

Height: 13" (330 mm) Depth: 12-7/8" (326 mm)

Amplifier

Output power 200 watts minimum RMSper channel into 6

Output terminals Speakers: 6 ohms

Input terminals Game/Auxiliary (audio signal):

ohms from 100 Hzto 20kHz, 10%total harmonic distortion

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

Video output: 1Vp-p

500 mV/47 k ohms Game/Video: 1Vp-p

CD player

Type 5-disc multi-play compact disc player Signal readout Non-contact, 3-beam semiconductor laser

D/A converter 1-bit D/A converter Frequency re-

sponse Dynamic range 90 dB (1 kHz)

pickup

20 - 20,000 Hz

Tuner

Frequency range FM: 87.5 - 108.0 MHz

AM: 530 - 1,720 kHz

Cassette deck

Frequency response

Signal/noise ratio 55 dB (TAPE-1 playback)

Wow and flutter 0.3 % (WRMS)

CP-ES900/CP-ES99

Type 3-way type speaker system

Maximum input power

Rated input power 200 W Impedance 6 ohms Dimensions Width: 10-7/8" (277 mm)

Weight 10.6 lbs. (4.8 kg)/each

50 - 14,000 Hz (normal tape)

50 dB (TAPE-2 recording/playback)

with passive radiator Super tweeter x 2

2" (5 cm) tweeter x 1 6-1/2" (16 cm) woofer x 1

4" (10 cm) passive radiator 400 W

Height: 13" (330 mm) Depth: 11" (279 mm)

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

1 – 1

CD-ES900/CD-ES99

[2] Names of parts

CD-ES900/CD-ES99

Front panel

1. Disc Trays

2. Timer Indicator

3. Power On/Stand-by Button

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

5. Clock/Timer Button

6. Tuning Up Button

7. Tuning Down Button

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

9. Equalizer Mode Select Button

10. Tape 1 Cassette Compartment

11. Headphone Jack

12. Game/Video Input Jacks

13. Disc Number Select Buttons

14. CD Direct Play Button

15. Disc Tray Open/Close Button

16. CD Play or Repeat, Tape Play Button

17. Memory/Set Button

18. Tape 2 Record Pause Button

19. CD or Tape Stop Button

20. Extra Bass/Demo Mode Button

21. Volume Control

22. Tape 2 Cassette Compartment

23. Tuner (Band) Button

24. CD Button

25. Tape (1 2) Button

26. Game/Video Button

1 2

14 15

4 5

6 7

8 9

17 18

19 20

21 22

24 25 2623

Display

1. Disc Number Indicators

2. CD Play Indicator

3. CD Pause Indicator

4. Memory Indicator

5. CD Repeat Play Indicator

6. CD Indicator

7. Extra Bass Indicator

8. Tape Play Indicator

9. FM Stereo Mode Indicator

10. Daily Timer Indicator

11. FM Stereo Receiving Indicator

12. Tape 2 Record Indicator

13. Sleep Indicator

14. Timer Play Indicator

15. Timer Recording Indicator

Rear panel

1. Cooling Fan

2. AC Power Cord

3. FM 75 Ohms Antenna Terminal

4. FM Antenna Ground Terminal

5. AM Loop Aerial Jack

6. Video Output Jack

7. Speaker Terminals

76321 4 5

10911

13 14 15

3 4 5 6

1 – 2

CD-ES900/CD-ES99

Remote control

CD-ES900/CD-ES99

1. Remote Control Transmitter

2. Disc Number Select Buttons

3. Disc Direct Search Buttons

4. CD Clear/Dimmer Button

5. Memory/Set Button

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

7. CD Pause Button

8. Tape 2 Record Pause Button

9. Tuner (Band) Button

10. CD Button

11. Tape (1 2) Button

12. Game/Video Button

13. Power On/Stand-by Button

14. Clock/Timer Button

15. CD Random Button

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

17. CD or Tape Stop Button

18. CD Play or Repeat, Tape Play Button

19. Extra Bass Button

20. Equalizer Mode Select Button

21. Volume Up and Down Buttons

10 11 12

13 14

4 5 6 7

8 9

15 16

17 18 19 20

CP-ES900/CP-ES99

1. Tweeter

2. Passive Radiator

3. Woofer

4. Super Tweeters

5. Speaker Wire

2 3

1 – 3

CD-ES900/CD-ES99

— M E M O —

1 – 4

AM IF

FM RF

TP301

TP302

FM IF

T301

T302

R356

R381

T303

T306

IC301

L312

T351

CNP301 AM LOOP ANTENNA

SO302

FM ANTENNA

TERMINAL

FM BAND COVERAGE fL

AM BAND COVERAGE fL

AM TRACKING fL

MAIN PWB

CD-ES900/CD-ES99CD-ES900/CD-ES99Service ManualCD-ES900/CD-ES99MarketE

CHAPTER 2. ADJUSTMENTS

[1] Mechanism section

• Driving Force Check

Torque Meter Specified Value

Play: TW-2111 Tape 1: Over 80 g

Tape 2: Over 80 g

• Torque Check

Torque Meter Specified Value

Tape 1 Tape 2

Play: TW-2111 30 to 80 g.cm 30 to 80 g.cm Fast forward: TW-2231 — 70 to 180 g.cm

— 70 to 180 g.cm

• Tape Speed

Normal speed

Test Tape Adjusting

Point

MTT-111 Variable

Resistor in motor.

TAPE MECHANISM

Specified

Value

3,000 ± 30 Hz Speaker

Instrument

Connection

Speaker Terminal (Load resistance: 6 ohms)

CD-ES900/CD-ES99

[2] Tuner section

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

•AM IF/RF Signal generator: 400 Hz, 30%, AM modulated

Test Stage Frequency Frequency

Display

AM IF 450 kHz 1,720 kHz T351 *1 AM Band

— 530 kHz (fL): T306

Coverage AM

990 kHz 990 kHz (fL): T303 *1

Tracking

*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

Frequency Frequency

Display

— 87.50 MHz T301 (fL): Coverage FM RF 98.00 MHz

98.00 MHz L312 *2

(10-30 dB)

Setting/

Adjusting

Parts

1.1 ± 0.1 V

Setting/

Adjusting

Parts

1.3 V ± 0.1 V

Instrument

Connection

Instrument

Connection

Tape Motor

Variable Resistor in motor

Figure 1

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

•FM IF Signal generator: 10.7 MHz, FM modulated

Test

Frequency Frequency

Stage

Display

Setting/

Adjusting

Point

IF 10.7 MHz 98 MHz T302

(Turn the core of transformer T302 fully counterclockwise)

Instrument

Connection

Figure 2 ADJUSTMENT POINTS

2 – 1

CD-ES900/CD-ES99

[3] CD section

CD Error code description

Error Explanation

01 When Pickup set inner position, inner switch cannot

detect ‘ON’ level for 10 secs.

10* CAM error. Can’t detect CAM switch when CAM is mov-

ing.

11* When it detect CAM operation error during initialize pro-

cess.

20* TRAY error. Can’t detect TRAY switch when TRAY is

moving.

21* When it detect TRAY operation error during initialize

process.

31 When it change to CD function, DSP cannot read initial

data.

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

Standard Specification of Stereo System Error Message Display Contents

Error Contents DISPLAY Notes

CD Pickup Mechanism Error. ‘ER-CD01’ PU-IN SW Detection NG.

CD Changer Mechanism Error. ‘ER-CD**’

(*)

10: CAM SW Detection NG during normal operation. 11: CAM SW Detection NG during initialize process. 20: TRAY SW Detection NG during normal operation. 21: TRAY SW Detection NG during initialize process.

CD DSP Communication Error. ‘ER-CD31’ DSP COMMUNICATION ERROR Focus Not Match/IL Time Over ‘NO DISC’

TUNER PLL Unlock PLL UNLOCK

(*) CHECKING: If Error is detected, ‘CHECKING’ will be displayed instead of ‘ER-CD**’. ‘ER-CD**’ display will only be displayed when error had been detected for the

5th times.

Speaker abnormal detection and +B PROTECTION display.

In case speaker abnormal detection or +B PROTECTION had occurred, it can be checked by pressing ‘POWER’, ‘ ’ and ‘X-BASS’ button. Micro Computer version number will be displayed as “U******”.

Press ‘VIDEO/AUX’ button during version number display and then press ‘POWER’, ‘MEMORY/SET’ and ‘VIDEO/AUX’ button. Display will show “S**B**”. S is referring to speaker abnormal detection and B is referring to +B PRPTECTION. ** is in hex values.

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

BEFORE TRANSPORTING THE UNIT

The following process need to be taken after set tapering/parts replacement.

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

2. While pressing down the button and the X-BASS/DEMO button, press the ON/STAD-BY button. The Micro Computer version number will be displayed as “U******”.

3. Press OPEN/CLOSE button until “WAIT” → “FINISHED” appears.

4. Unplug the AC cord and the unit is ready for transporting.

M 87.5 MH

2 – 2

[4] CD Changer mechanism section

• A number in the drawing sheet is the number of the parts guide (CHANGER MECHANISM PARTS).

141

CD-ES900/CD-ES99

2 – 3

140

HALF GEAR MUST ARRANGE AS SHOWN

CD-ES900/CD-ES99

139

APPLY SANKOL BEFORE FIX

FIX ITEM 1 ACCORDING TO THE SHOWN PICTURE ABOVE

ROTATE MODE BIG GEAR UNTIL REACH AS SHOWN IN PICTURE

2 – 4

CD-ES900/CD-ES99

143

APPLY GREASE

112

PULL THE LEVER UNITIL REACH THE ARROW MARK

2 – 5

CD-ES900/CD-ES99

FIGURE 2

FIGURE 1

152

142

APPLY GREASE

118

SLOT CLAMP SW AM INSIDE BASE SLOT

2 – 6

CD-ES900/CD-ES99

APPLY GREASE AT BOTTOM SIDE OF GEAR FOLLOW MARKING

NO NEED APPLY GREASE AT BOTTOM SIDE

FIGURE 1

APPLY GREASE AT TOP SIDE OF GEAR FOLLOW MARKING

127

OTHER THAN FIGURE 1 DIRECTION ALL N.G

O.K

128

N.G

BLACK MARK

2 – 7

CD-ES900/CD-ES99

APPLY GREASE AT HALF GEAR AREA

ROTATE CLOCKWISE UNTIL REACH HERE (MAXIMUM)

129

2 – 8

CD-ES900/CD-ES99

CHANGE COLOR TO BLACK

150151148

2 – 9

CD-ES900/CD-ES99

TRAY BIG GEAR CHANGE COLOR TO BLACK

MUST FREE FROM GREASE THE SHOWN AREA

O.K

GREASE APPLICATION LENGTH

GREASE APPLICATION PORTION

N.G

124

TRAY BIG GEAR CHANGE COLOR TO BLACK

SHOWN HOLE MUST FACING ARROW DIRECTION

131

2 – 10

CD-ES900/CD-ES99

138 126 125

APPLY GREASE AT BOTTOM SIDE ONLY

TR-RE JOINT GEAR C

APPLY GREASE ONLY AT TOP SIDE GEAR

MUST FIX ACCORDING TO THE HOLE'S

2 – 11

CD-ES900/CD-ES99

148 147 146 145

2 – 12

CD-ES900/CD-ES99

121

144

WHEN FIXING ITEM 2 MUST FOLLOW AS SHOWN

APPLY GREASE

130

2 – 13

CD-ES900/CD-ES99

117

FIGURE 2

FIGURE 1

APPLY GREASE

FIGURE 3

APPLY GREASE SC141

2 – 14

CD-ES900/CD-ES99

ITEM2,3MUST APPLY GREASE ON TOP SIDE GEAR ONLY

134

GEAR 112 GEAR 112

133

132

O.K

TOP VIEW AFTER ASSY

N.G

FIX REVERSE N.G

2 – 15

CD-ES900/CD-ES99

APPLY GREASE BEFORE FIX

MOVE UNTIL TOUCH

DURING GEAR A ROTATE MUST PRESS SHOWN AREA AND LEVER B WILL MOVE ARROW DIRECTION THEN FIX ITEM 1 .

108 803 x6

APPLY GREASE

CONFIRM WHETHER FIXED PROPELY OR NOT

2 – 16

CD-ES900/CD-ES99

APPLY GREASE

115

BEHIND THE LEVER NEED TO APPLY GREASE

PULL IT THEN LEVER WILL MOVE IN

2 – 17

CD-ES900/CD-ES99

122

115

APPLY GREASE

APPLY GREASE BEFORE FIX

APPLY GREASE AT BOSS

SPRING MUST ARRANGE UNDER THE HOOK

BOARD R

O.K LR JOINT LEV

LR JOINT LEV

N.G

2 – 18

CD-ES900/CD-ES99

ASSY REVERSELY N.G

103 137 136

APPLY GREASE

BIG SLOT MUST FACING OUT WHEN FIX & AFTER FIX TO BASE CHASSIS AFTER ASSY CONFIRM THE FREE DROP

GEAR POSITION DURING FIXING

2 – 19

CD-ES900/CD-ES99

ASSY REVERSELY N.G

APPLY GREASE

114

135

136

BIG SLOT MUST FACING OUT WHEN FIX & AFTER FIX TO BASE CHASSIS

AFTER ASSY CONFIRM THE FREE DROP

GEAR POSITION DURING FIXING

CONFIRM BOTH GEAR SIT PROPELY & LOCKED

2 – 20

CD-ES900/CD-ES99

AFTER FIX OUTER UP/DOWN LEVER HOLD SHOWN PORTION AND MOVE UP/DOWN THAN CONFIRM LEVER GO INSIDE THE HOLE OR NOT

120

BIGGER SLOT FACING OUT

IF GO INSIDE HOLE IS O.K

IF NO GO INSIDE HOLE IS N.G

119

BIGGER SLOT FACING OUT

2 – 21

CD-ES900/CD-ES99

BIG SLOT FACING OUT

110

2 – 22

CD-ES900/CD-ES99

PUSH THE LEVER ACCORDING TO ARROW DIRECTION THAN FIX

WHEN FIX MAIN BASE ASSY FOLLOW ACCORDING TO O.K PICTURE

MAKE SURE MECHA HOLDER SHAFT FIX PROPELY TO LEVER

O.K

N.G

2 – 23

CD-ES900/CD-ES99

APPLY SANKOL

101

102

APPLY SANKOL AT TRAY SLIDING PORTION

APPLY SANKOL ON TOP

FIX TRAY NO 1 FIRST THAN FOLLOW OTHER

APPLY SANKOL INSIDE THE SLOT & OTHER SHOWN PORTION

RIB

COSMO GUIDE TRAY HAVE MARKING AS SHOWN

2 – 24

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