DOWNLOAD Sharp QT-CD161H (serv.man2) Service Manual ↓ Size: 1.91 MB | Pages: 40 in PDF or view online for FREE

– 10 –

  1. Tuner

(  ): AM mode
Marking except for (  ): FM mode

2. CD

(  ): Play mode
Marking except for (  ): Stop state

3. Deck section

(  ): Record mode
Marking except for (  ): Playback mode
Display / Control section:
(  ): Active state
Marking except for (  ): CD Function mode at stop state

• Schematic diagram and Wiring Side of P.W.Board for this

model are subject to change for improvement without prior
notice.

• 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.

• Resistor:

To differentiate the units of resistors, the symbol as K and M
are used: the symbol K means 1000 ohm and the symbol M
means 1000 kohm and the resistor without any symbol is an
ohm resistor. The resistor designated "Fusible" is a fuse type
resistor

• Capacitor:

To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the capacitor
without such a symbol is microfarad. As to electrolytic capacitor,
the expression “capacitance/withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type

• The indicated voltage in each section is the one measured by

Digital Multimeter between such a section and the chassis
with no signal given.

SW102

RECORD/PLAYBACK

PLYBACK—RECORD

SW201

FUNCTION/POWER

TAPE—TUNER— CD/
OFF—ON

SW202

X-BASS

OFF—ON

SW203

SURROUND(162H ONLY)

OFF—ON

SW501

TUNER UP

OFF—ON

SW502

TUNER DOWN

OFF—ON

SW503

BAND

OFF—ON

SW504

MEMORY

OFF—ON

SW505

PRESET DOWN

OFF—ON

SW506

PRESET UP

OFF—ON

SW507

CD LID OPEN/CLOSE

OFF—ON

SW601

TAPE MAIN

OFF—ON

SW702

PICKUP IN

OFF—ON

KTA1266 GR
KTA1273 Y
KTC3194 Y
KTC3199 GR
KTC8050 D
KRA102 M
KRA109 M
KRC104 M
KRC107 M

FRONT

VIEW

E  C  B

(S)(G)(D)

(1) (2) (3)

– 11 –

62 51

37

46

56

39

55

38

54

33

53

32

11

8
4
2

~

+5V

FOCUS COIL

TRACKING COIL

PICKUP UNIT

18

28

29

13

3

25 26

5

20

6

21

49

50

52

53

51

54

Q804

+5V

23

6

63

43

64

10

44

12

45

9

14

13

43

16

44

17 18 19 20

15

32

40

1

61

58

57

CL, DAT, SELIAL CONTROL

CONSTANT

VOLTAGE

REGULATOR

16

27

31

28

15

30

29

M

M

M702

SLED

MOTOR

M701

SPINDLE

MOTOR

1 2 3 4

+7.4V

(CD)

SECTION

MAIN

TO

VVDD

XIN

XOUT

VDD

XVDD

EFMO

EFMIN

CLV+

CLV–

V/P

HFL

TES

TOFF

JP–

JP+

TGL

RES. CQCK. COIN

SQOUT. RWC. WRQ

LCHO

IC802

LC78622E

SERVO/SIGNAL

CONTROL

16.93MHz

XL801

SLI

SLC

CV+

JP–

DRF

CE

DAT

CL

CLK

DEF

SLD

SLEQ

SPO

FD

TO

SL+

SL–

F

E

FIN1

FIN2

64

62

+5V

Q801

VCC1

LDD

LASER

DRIVER

SERVO AMP.

LA9240M

IC801

30

1

+7.4V

9

7 8

22

24

10

25

11

IC803

LA6541

FOCUS/TRACKING

/SPIN/SLIDE

DRIVER

TO MAIN

SECTION

TO MAIN

SECTION

– 12 –

6

5

8

2

10

11

12

5

1

8

9

6

12

IC202

LA4597

POWER AMP.

L

VOLUME

X-BASS

SW202

A,B

SW203

A,B

SURROUND

VR201

A,B

STANBY

Q201
Q202
Q251

R

2

1

3

IC203

KIA7808P

VOLTAGE

REGULATOR

+B2

+B1

SP501

SPEAKERS

SP502

SO601

SW201-C

POWER/

FUNCTION

AM / FM

SELECT

+B

FM +B

SW201-D

POWER/

FUNCTION

RADIO

TAPE

REC

POWER/

FUNCTION
SW201-A,B

FROM TUNER

SECTION

IC2-9,10PIN

CD

REC/P.B

SW102

A,F

P. B

REC

IC101

EQULIZER

AMP.

BA331IL

REC

REC

P.B

P.B

P.B

L

R

L

R

SW102

REC/P.B

B.D

REC/P.B

SW102

C,E

L-CH

REC/P.B

HEAD

FROM

CD/DISPLAY

SECTION

R-CH

ERASE

HEAD

SW102-H

REC/P.B

BIAS

OSC.

Q351

L301

SW201-G

REC/P.B

+B1

M601

TAPE

MOTOR

SW601

MAIN

D651~D654

RECTIFIER

F651

T1.25A L 250V

TUNER

+B

BACK UP

+B

T601

POWER

TRANSFORMER

BATTERY

DC12V

["D" SIZE (UM/SUM-1,

R20 or HP-2)BATTERYx8]

BATTERY

DC3V

["AA" SIZE (UM/SUM-3,

R6 or HP-7)BATTERYx2

FOR TUNER MEMORY]

AC INPUT

AC 230-240V

50Hz

L-CH

R-CH

4

6

2

5

3

7

8

IC201

KIA4558S

SURROUND

AMP.

L

R

162H

ONLY

J201

HEADPHONES

– 13 –

X  IN

FM  IN 

X  OUT 

VSS 

AM  IN 

IF  IN 

VT

AM  MIX  OUT

X1

4.5MHz

DOUT

DATA

PERIDO

OF1 

CF2 

AM  IF  IN

AM  OSC

AM  MIX  OUT

FM  IF  IN

AM  IF  IN

GND 

AM  RF  IN

FM  DET

DET  OUT

STEREO

TUNER 

MPX  VCO

MPX  IN

R-CH  OUT

L-CH  OUT

MO/ST

FM  DET.

T2

VR1

VCO

FM+B

FM  RIPPLE

FILTER 

TO MAIN 

SECTION

CF1 

VT

VT

F1

B.P.F

L1

VD1 

FM  RF 

L2

VD2 

FM  OSC.

T1

FM  IF 

Q1 

FM+B

FM  ROD

ANTENA

24 

22

20

18 

13

16

10

15

9 

1 

3 

8 

7 

6 

5 

3 

4 

5 

6 

12

11

10

2

1

13

14

1 

6 

3 

4 

9 

7 

8 

IC3

TC9216P

PLL

+B

21

+B

+B

IC2

LA1805

FM/AM IF APX.

IC1

TA7358AP

FM  FRONT  END 

5 

T3

AM  IF 

Q5
Q6

AM  OSC  OUT

VT CONTROL 

Q3

Q4

L3

AM  ANT. 

VD3-1 

TC1 

L4

AM  OSC. 

VD3-2 

23 24 

3

4

5

6

19

20

18

25

13

14

11

15

72

56

79

76

27

24 31

30 23

12

22

16 10 7

17

SW504 
MEMORY
SW503 
BAND
SW502 
TUNER  DOWN
SW501 
TUNER UP
SW505 
PRESET  DOWN
SW506 
PRESET  UP 

LCD  DISPLAY 

LCD501

11
10

9 
8 
7 
6 
5 
4 
3 
2 
1 

12

13

14

15

16

17

18

19

20

21

MONO/ST 

IC501

CD/TUNER CONTROL

MICROCOMPUTER

Q501

Q502

TUNER 

+B

IC502

RESET 

RX501

RESET 

A-GND 

AUDIO 
+12V

+5V 

VOLTAGE

REGULATOR

ZD1

D GND

TUNER +B

SW507
CD LID

OPEN/CLOSE

,

SW702

PICKUP IN

~~

TO CD

SECTION

XL501

4.19 MHz

RF AMP. 

CLOCK 

1

2

3

Q10

161H/162H

ONLY

SWITCHING