DOWNLOAD Sharp CD-C470E (serv.man3) Service Manual ↓ Size: 2.94 MB | Pages: 76 in PDF or view online for FREE

– 41 –

FW903

1

5

L903

R932

R931

C924

C923

WT903

C963

C986

C965

C964

R962

C966

C956

R956

L951

C981

R959

R955

C955

C979

C967

C954

C977

R965

R951

C969

C975

C952

L952

C978

C968

R966

R960

C980

C976

C970

R936

C982

L902

C930

R934

C926

C932

C928

C936

C934

C933

C927

R937

C931

C935

C929

C925

R935

R933

L901

C917

C919

R927

R928

C918

C920

R930

R929

C943

R905

C905

R911

C907

R909

R916

R915

C909

R918

C915

R907

C911

R921

R913

R914

R919

C914

C913

IC901

R920

R923

C941

R922

C942

R952

R912

R906

C908

C906

R924

C951

R910

C910

R908

C944

R917

C953

R957

Q951

R953

C959

R954

C984

R970

IC951

C985

C961

C960

R961

C904

C987

R904

C902

D951

R925

D901

Q901

R902

R903

C901

R901

C937

FW901

C903

C938

FW902A

C940

R938

ZD901

C939

1 2 3 4 5

3

2

1

3

2

1

F951
T1.6A

14 13 12 11 10

9 8 7 6 5 4 3 2 1

3

2

1

3

2

1

F951
T1.6A L 250V

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

1 2 3

3

1

1

9

4 5

F901

T2.5A L 250V

F902

T2.5A L 250V

SO902

REAR SPEAKERS

L-CH

R-CH

SO901

FRONT SPEAKERS

SO903

CENTER SPEAKER

L-CH

R-CH

WT901

TO MAIN PWB

P36 2-G

1

1

5

9

B R

COLOR  TABLE

R D ( R )

O R

Y L

G R

B L

V L

G Y

W H ( W )

B K

P K

BROWN

RED

ORANGE

YELLOW

GREEN

BLUE

VIOLET

GRAY

WHITE

BLACK

PINK

HEADPHONS PWB-A3

JA901

HEADPHONES

POWER AMP.PWB-B2

– 42 –

+

-

+

-

PICK UP IN

SLIDE MOTOR

DISC MOTOR

M2

CNP3A

SW4

M1

+

-

1
2
3
4
5
6

CNPM2

SWM5
F. A. S

SWM2
T2 CrO2

SWM4
REC RVS

SWM3
REC FWD

SWM1

VRM1

TAPE

SPEED

T1 CrO2

1

FWM2

4

RM1

3

4

2

1

PHM1

SWM6

CAM

WH

PK

BK

TAPE 1

PLAY BACK HEAD(55)

TAPE 2

RECORD/PLAYBACK/ERACE HEAD(56)

GY

GY

GY

WH

CNS102

CNS101

YL

BK

BL

PK

WH

BK

7 6 5 4 3 2 1

2 1

3

6

BI 102

1

WH

BK

PK

CNP102

TO MAIN PWB

P37 10-F

TO MAIN PWB

P37 9-H

CNP101

CNS5

2
1

2
1

CNS10

WH

RD

GY

WH

BR

WH

GY

OR

WH

GY

10

1

BIM5

6

9
8
7
6
5
4
3
2
1

CNP10

TO MAIN PWB

P37 9-A

SW2

MECHA UP

SW1

OPEN/CLOSE

M3
T/T UP/DOWN

SW3
DISC NUMBER

CNP1

CNS1B

CNS1A

CNS2B

CNS2A

CNS3B

CNS3A

BL

YL

PK

WH

BK

GY

RD

WH

GY
WH
GY
WH

GY

WH

RD

WH

GY
WH
GY
WH

BL
PK

WH

YL
BK

CNP2

CNP3

1
2
3
4
5
6
7
8

1
2
3
4
5
6
7
8

1
2
3
4
5
6

1
2
3
4
5
6

1
2
3
4
5

1
2
3
4
5

TO MAIN PWB

P37 9-A

TO MAIN PWB

P37 8-A

TO MAIN PWB

P37 7-A

PICKUP UNIT

CD MOTOR PWB-E

TRAY MOTOR PWB-G

SOLM2

SOLENOID

B R

COLOR  TABLE

R D ( R )

O R

Y L

G R

B L

V L

G Y

W H ( W )

B K

P K

BROWN

RED

ORANGE

YELLOW

GREEN

BLUE

VIOLET

GRAY

WHITE

BLACK

PINK

TAPE MECHANISM PWB-F

TAPE MOTOR

MM1

WTM1

TO

 MAIN PWB

P37 11-A

H

L

SOLENOID

SOLM1

WH

YL

BL

PK

WH

BK

FLAXIBLE PWB

HEAD PWB-H

CNPM1

1

13

1

13

FWM1

– 43 –

3

5ms
0.50 V
IC1  20   F.E

1

5ms
5.0 V
IC1  54   DRF

STOP

PLAY

FOCUS

SERCH

1

3

5

4

2

6

7

8

9

10

11

3

4

5

6

7

8

9

6

7

8

10

11

12

9

6

7

8

9

12

0.5ms
1.00 V
  HF

0.5ms
5.0 V
 HFL

0.5ms
5.0 V
 TES

1

2

3

CUE

0.5ms
1.00 V
  HF

1

2

3

0.5ms
5.0 V
 HFL

0.5ms
5.0 V
TES

REVIEW

50ms
10.0 V
  JP+

CUE

50ms
10.0 V
  JP-

50ms
0.50 V
  JP

50ms
1.00 V
  TE

 0.5ms
10.0 V
  JP+

 0.5ms
10.0 V
  JP-

 0.5ms
0.50 V
  JP

 0.5ms
1.00 V
  TE

REVIEW

50ms
10.0 V
  JP+

50ms
10.0 V
  JP-

50ms
0.50 V
  JP

50ms
1.00 V
  TE

 0.5ms
10.0 V
  JP+

 0.5ms
10.0 V
  JP-

 0.5ms
0.50 V
  JP

 0.5ms
1.00 V
  TE

PLAY

20ms
1.00 V
  SPO

NORMAL DISC
TN0=01

20ms
2.00 V
CLV+

PLAY

TCD-712 (140mm)
TN0=01

50ms
1.00 V
  SPO

50ms
2.00 V
CLV+

PLAY

TCD-712

5s
100mV
  SLD

1

0.5s
100mV
  SLD

1

– 44 –

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.

•  When the turntable fails to stop.

Is from

  5 V till 0V down pulse (approx. 300 ms) input

Check the SW3 and the wiring from the IC601 pin 54 to the
SW3.

No

No

into the IC601 pin 54 when the turntable is rotating?

5V

2.5V

0V

Yes

Check IC2 pin26 Q91 and Q93 and the periphery.

Check the SW2 MECHA UP SW and the wiring from the
IC601 pin 21 to the SW2 MECHA UP SW.

No

Yes

Is there following voltage input on the IC601 pin 54 in the
specific state?
When the CD mechanism is moved up: 0V

In other states: 5V

Yes

Is there following voltage input on the IC601 pin 54 in the
specific state?

In other states: 5V

When the CD mechanism is moved up: 0V

Check the SW2 MECHA UP SW and the wiring from the IC601
pin 54 to the SW2 MECHA UP SW.

Is 4V output from the Q91 emitter during operation stated
above?

Yes

Yes

Check the wiring of IC2 pin 26 and Q93 BASE.

OK

No

No

Is L output from the IC2 pin 26 during SEC when the disc skip
switch is pressed?

Yes

Check turntable motor and turntable mechanism.

Check Q91, Q93 and the periphery.

IC701 defective.

IC2 defective.