DOWNLOAD Sharp 21KF-80 (serv.man13) Service Manual ↓ Size: 5 MB | Pages: 44 in PDF or view online for FREE

Note: Do not apply voltage or current to NC pin from outside

1

2

3

4

5

6

7

8

9

V

CC

Output

     GND

Output

Standby

Input

GND

N.C.

V

olume

Pin No.

Description

1

Vcc

2

Ch Output (+)

3

GND

4

Ch Output (-)

5

Standby

6

Ch Input

7

GND

8

N.C

9

Volume

Pin No.

Pin Name

1

Inverting Input

2

Power Supply

3

Pump-up Output

4

GND

5

Vertical Output

6

Vertical Output Power Supply

7

Non-inverting Input

Non-inverting Input

Output Vcc

Output

GND

Pump Up Out

Vcc

Inverting Input

1

2

3

4

5

6

7

Pump Up

Thermal Protection

Amp

+

-

PMQFP44 package

CAPL_M

AHVSS

AGNDC

SC2_IN_L

SC2_IN_R

ASG

SC1_IN_L

SC1_IN_R

VREFTOP

MONO_IN

AVSS

RESETQ

I2S_DA_IN2

DVSS

DVSUP

ADR_CL

I2S_DA_IN1

I2S_DA_OUT

I2S_WS

I2S_CL

I2C_DA

I2C_CL

NC

SC1_OUT_L

SC1_OUT_R

VREF1

NC

AHVSUP

DACM_L

DACM_R

VREF2

NC

NC

ANA_IN1

+

ANA_IN

−

TESTEN

XTAL_IN

XTAL_OUT

AVSUP

TP

D_CTR_I/O1

D_CTR_I/O0

ADR_SEL

STANDBYQ

34

35

36

37

38

39

40

41

42

43

44

22

21

20

19

18

17

16

15

14

13

12

1

2

3

4

5

6

7

8

9

10 11

33 32 31 30 29 28 27 26 25 24 23

Simplified functional block diagram of MSP 34x5G

Sour

ce Select

Loud-

SCART1

SCART1

SCART2

MONO

De-

modulator

speaker

Sound

Processing

DAC

ADC

Loud-

DAC

ADC

Sound IF1

speaker

I

2

S

I

2

S1

I

2

S2

Pre-

processing

Prescale

Prescale

SCART

DSP

Input

Select

SCART

Output

Select

Service precaution:
The area enclosed by this line is directly   (              )
connected with AC mains voltage.
When servicing the area, connect an insulating
transformer between TV receiver and AC line to
eliminate hazard of electric shock.

Waveform measurement condition:
Colour bar generator signal of 70 dB from RF input.

1. The unit of resistance «ohm»is omitted (K=1000 ohms.
M= Megaohm).
2. All resistors are 1/16 watt. unless otherwise noted.
3. All capacitors are

 µF, unless otherwise noted (P= µµF).

4. The capacitor with Part No. RC-FZ9XXXBMNJ is de-
signed to with stand 63V.
5. The capacitor with Part No. RC-FZ4XXXBMNJ is de-
signed to with stand 50V.

Parts marked with  «

»  (

             

     ) are important

for maintaining the safety of the set. Be sure to re-
place these parts with specified ones for maintain-
ing the safety and performance of the set.

!

Safety note:
1. Disconnect the AC plug from the AC outlet be-
fore replacing parts.

2. Semiconductor heat sinks should be regarded
as potential shock hazards when the chassis is
operating.