DOWNLOAD Sharp CD-RW5000 (serv.man18) Service Manual ↓ Size: 7.54 MB | Pages: 96 in PDF or view online for FREE

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When the CD section does not operate when the objective lens of the optical pickup is dirty, this section may not operate. Clean
the objective lens, and check the playback operation. When this section does not operate even after the above step is taken, check
the following items.
Remove the cabinet and follow the troubleshooting instructions.
"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup
lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."

Turn the power off.
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Do not touch the lens with the bare hand.

Dust gradually accumulates on the objective lens during use, and it may degrade performance.  To avoid this problem, use a
cleaning disc designed for CD optical pickup lenses.

HOW TO USE
1. Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which has

the   mark next to it.

2. Place the CD cleaner disc onto the CD disc tray with the brush side down, then press the play button.
3. You will hear music for about 20 seconds and the CD player will automatically stop.  If it continues to turn, press the stop
button.
CAUTION

 The CD lens cleaner should be effective for 30~50 operations, however if the brushes become worn out earlier then please

replace the cleaner disc.

 If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft cloth.

 Do not drink the cleaner fluid or allow it to come in contact with the eyes.  In the event of this happening then drink and /

or rinse with clean water and seek medical advice.

 The CD cleaner disc must not be used on car CD players or on computer CD-ROM drives.
 All rights reserved. Unauthorized duplicating, broadcasting and renting this product is prohibited by law.

Cleaner Liquid

Cleaning Disc
PARTS CODE: UDSKA0004AFZZ

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STEP 1

Does the display "E-CD01" appear?

Yes

No

Does the pickup move to the inner/outer position using the
'UP'/'DOWN' key?

Yes

STEP 2

Laser ON?

Check from pins 7 and 8 of CNP5 via Q4 and pins 6 and 7 of
IC6 to pin 38 of IC2.

Yes

STEP 3

Focus search?

Yes

STEP 4

No

No

No

Check from pins 5 and 6 of CNP6 via pins 19, 20 and 21 of
IC5 to pin 41 of IC2.

No

Tracking servo?

Yes

No

Check from pins 21, 22 and 23 of IC6 to pin 24 of IC2.

No

Yes

Yes

Check the line of PU-IN SW.

Check from pin 2 of CNP6 via pin 25 of CNP1 to pin 94 of
IC901.

Check the line of the slide control.
Check from pins 3 and 4 of CNP6 via pins 17, 18 and 22 of
IC5 to pin 40 of IC2.

Focus search?

STEP 5

Check from pins 1 and 2 of CNP5 via pins 3, 4 and 5 of IC5 to
pins 31 and 34 of IC2.
Check from pins 2 and 5 of CNP7 to pins 4 and 5 of IC6.

RF signal

Check from pins 50 and 53 of IC2 to pins 24 and 28 of
CNP1.

No

AUDIO signal

Check from pins 3 and 4 of CNP5 via pins 1, 2 and 6 of IC5 to
pins 29 and 33 of IC2.
Check from pins 1, 3 and 4 of CNP7 to pins 2 and 3 of IC6.

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Check the items 1, 2 and 3. If the playback/recording operation is not possible, the CD-R unit is defective.
When no sound is heard during playback, check the item 4. If there are no output signals, CD-R unit is defective.

Stopped

27-JUL-00 09 58

50 

µ

s/d

CH1=5V
  DC   P*10

CH2=5V
  DC   P*10

CH3=5V
  DC   P*10

1

2

3

1. Check of supply voltage

-8V    Pin 1 of CNP808
+12V Pin 2 of CNP808
+5V   Pins 6 and 7 of CNP808

2. Check of control signal from the system microcomputer

1. DATA      Pin 7 of CNP912
2. CLOCK   Pin 5 of CNP912
3. RESET   Pin 3 of CNP912

3. Check of recording signal

CD or AUX OPT (Digital)

EBU INPUT Pin 1 of CNP911

OTHER FUNCTION (Analog)

A-IN L-ch, R-ch  Pin 3 and 5 of CNP914

4. Check of playback signal

A-OUT L-ch, R-ch Pins 1 and 2 of CNP914

Since this unit is not provided with an earth terminal, the hum noise may be increased during playback when it is connected to a
record player having an earth lead separated from a RCA lead.
In such a case, replace the screw shown in the following figure with XJBSD30P10000 and connect the earth lead of the player.
(Replace the black screw with a general un painted screw.)

VCR

To the line output

Red

White

RCA lead

RCA lead

Stereo turntable

MD deck,DSS tuners or DAT decks

To the line
output
socket

MD recorder

To the optical line input socket

Connection cable for
digital recording

Replace this screw and 
connect the earth lead.

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1

BCK

Output

Bit clock output terminal. 32fs, 48fs or 64fs can be selected by command.

2

LRCK

Output

L/R channel clock output terminal. L channel: "L", R channel: "H".
the output polarity can be inverted by command.

3

AOUT

Output

Audio data output terminal. MSB/LSB fast can be selected by command.

4

DOUT

Output

Digital out output terminal. Up to double speed can be output.

5*

IPF

Output

Correction flag output terminal. When the correction impossible symbol appears if the AOUT
output corresponds to the C2 correction output: "H".

6

VDD3

—

Digital 3.3V power supply terminal.

7

VSS3

—

Digital GND terminal.

8*

SBOK

Output

Subcode Q data CRCC decision result output terminal. When the decision result is OK: "H".

9*

CLCK

Input/Output

Clock input/output terminal for subcodes P-W data reading.
The input/output polarity can be selected by command.

10*

DATA

Output

Subcodes P-W data output terminal.

11*

SFSY

Output

Playback system frame sync signal output terminal.

12*

SBSY

Output

Subcode block sync output terminal.
In the S1 position when the subcode sync is detected: "H".

13

/HSO

Output

Playback speed mode flag output terminal.

14*

/UHSO

Output

15

PVDD3

—

3.3V power supply terminal for PLL system.

16

PDO

Output

EFM signal/PLCK signal phase error signal output terminal.

17

TMAX

Output

TMAX detection result output terminal.

18

LPFN

Input

Amp's inversion input terminal for PLL system low-pass filter.

19

LPFO

Output

Amp's output terminal for PLL system low-pass filter.

20

PVREF

—

VREF terminal only for PLL system.

21

VCOF

Output

Filter terminal for VCO.

22

AVSS3

—

Analog GND terminal.

23

SLCO

Output

DAC output terminal for data slice level generation.

24

RFI

Input

RF signal input terminal. Zin can be selected by command.

25

AVDD3

—

Analog 3.3V power supply terminal.

26

RFCT

Input

RFRP signal center level input terminal.

27

RFZI

Input

Input terminal for RFRP signal zero crossing.

28

RFRP

Input

RF ripple signal terminal.

29

FEI

Input

Focus error signal input terminal.

30

SBAD

Input

Sub-beam addition signal input terminal.

31

TEI

Input

Tracking error input terminal. Fetch when the tracking servo is on.

32

TEZI

Input

Input terminal for tracking error signal zero crossing.

33

FOO

Output

Focus equalizer output terminal.

34

TRO

Output

Tracking equalizer output terminal.

35

VREF

—

Analog reference power supply terminal.

36

RFGC

Output

RF amplitude adjustment control signal output terminal.

37

TEBC

Output

Tracking balance control signal output terminal.

38

SEL

Output

APC circuit ON/OFF signal output terminal.
When the laser is on, UHS="L": "Hi-z", UHS="H": "H" output.

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

H

H

Normal speed playback

H

L

Double speed playback

L

L

4-time speed playback

—

—

—

/UHSO

/HSO

Playback speed

Longer than the specified period

"PVDD3"

Within the specified period

"Hi-z"

Shorter than the specified period

"AVSS3"

TMAX detection result

TMAX output