Sharp CDES-700, CDES-77 Service manual

CD-ES700/CD-ES77

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

SERVICE MANUAL

No. S5428CDES700/

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...................................................... 2-4

[4] CD Changer mechanism section ................... 2-5

CHAPTER 3. MECHANISM BLOCKS

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

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

MODEL

CD-ES700 Mini Component System consisting of CD-ES700 (main unit) and CP-ES700 (speaker system).

MODEL

CD-ES77 Mini Component System consisting of CD-ES77 (main unit) and CP-ES77 (speaker system).

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

[1] Wiring side of PWB........................................6-1

[2] Schematic diagram ........................................6-7

CHAPTER 7. FLOWCHART

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

CHAPTER 8. OTHERS

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

[2] FL Display.................................................... 8-11

Parts Guide

CD-ES700

CD-ES77

CHAPTER 4. DIAGRAMS

[1] CD Block diagrams ........................................ 4-1

[2] Main Block diagrams ...................................... 4-2

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.

SHARP CORPORATION

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

CD-ES700/CD-ES77

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 mF

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-ES700/CD-ES77CD-ES700/CD-ES77Service ManualCD-ES700/CD-ES77MarketE

CHAPTER 1. GENERAL DESCRIPTION

[1] Specifications

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

CD-ES700/CD-ES77

General

Power source AC 120 V, 60 Hz Power consump-

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

Weight 18.5 lbs. (8.4 kg)

135 W

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

Amplifier

Output power 150 watts minimum RMS per channel into 6

Output terminals Speakers: 6 ohms

Input terminals Game/Auxiliary (audio signal):

ohms from 100 Hz to 20 kHz, 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

response 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-ES700/CP-ES77

Type 3-way type speaker system

Maximum input power

Rated input power 150 W

Impedance 6 ohms

Dimensions Width: 10-7/8" (277 mm)

Weight 8.6 lbs. (3.9 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

300 W

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

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

1 – 1

CD-ES700/CD-ES77

[2] Names of parts

CD-ES700/CD-ES77

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

14 15

5 6 7

17 18

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

109

13 14 15

1 – 2

CD-ES700/CD-ES77

Remote control

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

4 5 6 7 8

15 16

17 18 19 20

CP-ES700/CP-ES77

1. Tweeter

2. Passive Radiator

3. Woofer

4. Super Tweeters

5. Speaker Wire

1 – 3

CD-ES700/CD-ES77

AM IF

FM RF

TP301

TP302

FM IF

T301

T302

R356

R381

T303

T306

IC301

L312

T351

CNP301

AM/FM LOOP ANTENNA

FM BAND COVERAGE fL

AM BAND COVERAGE fL

AM TRACKING fL

MAIN PWB

CD-ES700/CD-ES77CD-ES700/CD-ES77Service ManualCD-ES700/CD-ES77MarketE

CHAPTER 2. ADJUSTMENTS

[1] Mechanism section

• Driving Force Check

Torque Meter Specified Value

Play: TW-2111 Tape 1: Over 80 g

• Torque Check

Torque Meter Specified Value

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

• Tape Speed

Test Tape Adjust-

Normal

MTT-111 Variable

speed

Tape 2: Over 80 g

Tape 1 Tape 2

— 70 to 180 g.cm

ing Point

Resistor in motor.

Specified

Value

3,000 ± 30 Hz Speaker

Instrument

Connection

Speaker Terminal (Load resistance: 6 ohms)

•FM RF

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

Test

Stage

Frequency Frequency

Display

Setting/

Adjusting

Point

FM Band Coverage

FM RF 98.00 MHz

— 87.50 MHz T301 (fL):

1.3 V ± 0.1 V

98.00 MHz L312 *2

(10-30 dB)

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

•FM IF

Signal generator: 10.7 MHz, FM modulated

Test

Stage

Frequency Frequency

Display

Setting/Adjust-

ing Point

IF 10.7 MHz 98 MHz T302 (Turn the

core of transformer T302 fully counter clockwise)

*1. Input: Antenna Output: TP302

Instrument

Connection

Instrument

Connection

TAPE MECHANISM

Tape Motor

Variable Resistor in motor

Figure 1

[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

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

Coverage AM

Tracking

*1. Input: Antenna Output: TP302

— 530 kHz (fL): T306

990 kHz 990 kHz (fL): T303 *1

*2. Input: Antenna Output: TP301

Display

Setting/

Adjusting

Parts

1.1 ± 0.1 V

Instrument

Figure 2 Adjustment Points

Connection

2 – 1

[3] TEST MODE

• Setting the test mode

During stand-by mode, press ON/STAND-BY button while pressing

down the button and X-BASS/DEMO button. then, press the CD button to enter the test mode.

CD-ES700/CD-ES77

C D T E S T

OPEN/CLOSE operation is using manual. IL isn’t done

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

to page 2-3

<<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

IL isn’t done

<<MEMORY>> key input.

Adjustment result automatically will display as below for each 2 sec: a) "FOF_XXXX" b) "TOF_XXXX" c) "TBAL_XX" d) "TGAN_XX" f) "FGAN_XX" g) "RFLS_XX"

<<STOP>> key input.

STOP

explanation: a) Focus off set = "FOF_XXXX" b)Tracking off set = "TOF_XXXX" c)Tracking balance = "TBAL_XX" d)Tracking Gain = "TGAN_XX" f) Focus Gain = "FGAN_XX" g) RF level shift = "RFLS_XX" VOL — Last memory P.GEQ — FLAT X-BASS — OFF To cancel : Power OFF

––––––––

2 – 2

CD-ES700/CD-ES77

<<MEMORY>> key input.

Tracking OFF play at that specific point.

<<MEMORY>> key input.

Tracking ON play from that specific point.

Laser ON.

<<MEMORY>> key input.

Adjustment result automatically will display as below for each 2 sec : a) "FOF_XXXX" b) "TOF_XXXX" c) "TBAL_XX" d) "TGAN_XX" f) "FGAN_XX" g) "RFLS_XX"

<<STOP>> key input.

STOP

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

2 – 3

[4] 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 moving. 11* When it detect cam operation error during initialize pro-

cess. 20* TRAY error. Can't detect TRAY switch when TRAY is mov-

ing. 21* When it detect TRAY operation error during initialize pro-

cess.

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

data.

* 'CHECKING'

If Error is detected, 'CHECKING' will be displayed instead of 'ERCD**'. '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.

M 87.5 MH

CD-ES700/CD-ES77

(*) CHECKING:

If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**'. 'ER-CD**' display will only be display when 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', ' ' and 'X-BASS' button. MicroComputer version number will displayed as "U*****".

Press ‘VIDEO/AUX’ button during version number display and then press ‘POWER’, ‘MEMORY/SET’ and ‘VIDEO/GAME’ button. 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.

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/STAND-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.

2 – 4

CD-ES700/CD-ES77

[5] CD Changer mechanism section

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

141

2 – 5

140

HALF GEAR MUST ARRANGE AS SHOWN

CD-ES700/CD-ES77

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 – 6

CD-ES700/CD-ES77

143

APPLY GREASE

112

PULL THE LEVER UNITIL REACH THE ARROW MARK

2 – 7

CD-ES700/CD-ES77

FIGURE 2

FIGURE 1

152

142

APPLY GREASE

118

SLOT CLAMP SW ARM INSIDE BASE SLOT

2 – 8

CD-ES700/CD-ES77

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 – 9

CD-ES700/CD-ES77

APPLY GREASE AT HALF GEAR AREA

ROTATE CLOCKWISE UNTIL REACH HERE (MAXIMUM)

129

2 – 10

CD-ES700/CD-ES77

CHANGE COLOR TO BLACK

150151148

2 – 11

CD-ES700/CD-ES77

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 – 12

CD-ES700/CD-ES77

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 – 13

CD-ES700/CD-ES77

148 147 146 145

2 – 14

CD-ES700/CD-ES77

121

144

WH EN FIXING ITEM 2 MUST FOLLOW AS SHOWN

APPLY GREASE

130

2 – 15

CD-ES700/CD-ES77

117

FIGURE 2

FIGURE 1

APPLY GREASE

FIGURE 3

APPLY GREASE SC141

2 – 16

CD-ES700/CD-ES77

ITEM 2 , 3 MUST 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 – 17

APPLY GREASE BEFORE FIX

MOVE 112 UNTIL TOUCH THE WALL

DURING GEAR A ROTATE MUST PRESS SHOWN AREA AND LEVER B WILL MOVE ARROW DIRECTION THEN FIX PART 108

CD-ES700/CD-ES77

SCREW TORQUE

+0.5

2 kgf-cm

-0

108 803 x6

APPLY GREASE

CONFIRM WHETHER FIXED PROPELY OR NOT

2 – 18

CD-ES700/CD-ES77

APPLY GREASE

115

BEHIND THE LEVER NEED TO APPLY GREASE

PULL IT THEN LEVER WILL MOVE IN

2 – 19

CD-ES700/CD-ES77

123

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 – 20

CD-ES700/CD-ES77

ASSY REVERSELY N.G

103 137 136

APPLY GREASE

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

GEAR POSITION DURING FIXING

2 – 21

CD-ES700/CD-ES77

ASSY REVERSELY N.G

APPLY GREASE

114

135

136

BIG SLOT MUST FACING OUT

WH EN FIX & AFTER FIX TO BASE CHASSIS AFTER ASSY CONFIRM THE FREE DROP

GEAR POSITION DURING FIXING

CONFIRM BOTH GEAR SIT PROPELY & LOCKED

2 – 22

CD-ES700/CD-ES77

AFTER FIX OUTER UP/DOWN LEVER HOLD SHOWN PORTION AND MOVE UP/DOWN THEN 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 – 23

CD-ES700/CD-ES77

BIG SLOT FACING OUT

110

2 – 24

+ 67 hidden pages