Sony STR-V220 User manual

– 1 –

MICROFILM

US Model

SPECIFICATIONS

SERVICE MANUAL

FM STEREO/FM-AM RECEIVER

STR-V220

— Continued on next page —

STR-V220

– 7 – – 8 –

4-2. SCHEMATIC DIAGRAM – MAIN (1/3) SECTION –

• See page 6 forWaveforms.

• See page 13 for PrintedWiring Board.

• See page 23 for IC Block Diagrams.

(Page 19)

(Page 11)

(Page 17)

STR-V220

– 9 – – 10 –

4-3. SCHEMATIC DIAGRAM – MAIN (2/3) SECTION –

• See page 13 for PrintedWiring Board.

(Page 11)

(Page 20)

STR-V220

– 11 – – 12 –

4-4. SCHEMATIC DIAGRAM – MAIN (3/3) SECTION –

• See page 24 for IC Block Diagrams.

(Page 9, 10)

(Page 8)

STR-V220

– 17 – – 18 –

4-7. SCHEMATIC DIAGRAM – DISPLAY SECTION –

• See page 6 forWaveforms.

• See page 25 for IC Block Diagrams.

• See page 26 for IC Pin Function.

(Page 7)

(Page 19)

(Page 20)

STR-V220

– 19 – – 20 –

4-8. SCHEMATIC DIAGRAM – PANEL SECTION –

(Page 17)

(Page 8) (Page 9)

(Page 18)

STR-V220

– 23 – – 24 –

4-10. IC BLOCK DIAGRAMS

• Main section

IC301 LV1035M

STRIM

OSC

VOL

VCA VCA

VCA VCA VCA VCA

DEV

NOISE

GEN

NOISE

FILTER

BPF

CONTROL

BPF

V REF

STRIM

MODE

RECT

CUT

B NR

OUT

FILTER

DATA

DECODER

VOL/

MUTE

BPF

RECT

LOGIC

FF RECT

C MODE

LOGIC LOGIC

AAS

VDD

PCM

CONTROL

SRAM

FILTER

R BPF2

R BPF1

S DC OUT

C DC OUT

R DC OUT

L DC OUT

V REF

VCC

C OUT

S OUT

R OUT

L OUT

GND

L IN

R IN

S IN

DELAY OUT

L BPF2

L BPF1

RT IN

LT IN

DC CUT

C MODE

GND

NS BPF1

OSC

NS BPF2

ENABLE

DATA

CLK

DATA

CLK

VSS

OSC

VDD

A/D

D/A

DC CUT

VCC

DET

IREF

GND

S-OUT

R-OUT

L-OUT

L RECT

DC CUT4

R RECT

DC CUT3

L BPF3

VLR TH

VLR 1

VLR 2

VCS 2

VCS 1

VCS TH

L+R RECT

DC CUT2

L-R RECT

DC CUT1

R BPF3

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

1817

19 20 21 22 23 24 25 26 27 28 29 30 31 32

IC401 LC7822

CONTROL

LATCH

SHIFT RESISTOR

LEVEL SHIFT

VEE

OUT

VSS

RESET

VDD

OUT

ININ

OUT

IC950 NJM2103D

V+

VSB/SESIN

VSA

RESET

GND

OUTC

VSC

VREF

+–

–+

–

R S

IC501 LA1838

ALC

BUFF

OSC

MIX

RF. AMP

AGC

IF DET

S-CURVE

AM/FM

BUFF

REG

TUNING

DRIVE

GND VCC

PILOT

DET

VCO

STEREO

DRIVE

STEREO

MUTE

FF FF

DET

DECODER

ANTI BIRDIE

12 3 4 5 6 7 98

20 19 18 17 16

15141110

212223242527 262930

OSC.BUFF

FM-SD.ADJ

AM-OSC

REG

FM-AFC

AM-RF-IN

AGC

MPX-IN

FM-DET OUT

AM-DET OUT

OUT L

OUT R

AMP-IN L

AMP-IN R

AMP OUT R

AMP OUT L

VCO-STOP

STEREO

AM/FM

AM. SD

FM. SD

AM. SD ADJ

IF-BUFF

MUTE

VCC

FM DET

FM-IN

AM-MIX

FM-IF

AM-IF

GND

TUNED

S METER

FM S METER

COMP

12 13

PHASE

DET

– 25 –

• Display section

IC202 BA6208

1 2 3 4 5 6 7 89

OUTPUT 2

Vcc

GND

INPUT 2

INPUT 1

MOTOR

DRIVE

MOTOR

DRIVE

REG

SWITCH

OUTPUT1

IC502 LC72131

PHASE

DETECTOR

CHARGE PUMP

SWALLOW COUNTER

1/16, 1/17 4BITS

12BITS

PROGRAMMABLE

DIVIDER

UNIVERSAL

COUNTER

REFERENCE

DIVIDER

POWER

RESET

1/2

C2B

I/F

13456810 11

18 17 16 15 12

2122

XOUT

VSS

AOUT

AIN

VDD

FMIN

AMIN

XIN

D OUT

S CLK

S DATA

IFIN

I/O IN

MONO

FM/AM

UNLOCK

DETECTOR

DATA SHIFT REGISTER LATCH

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