Philips VR550 Service Manual

Video Cassette Recorder

Service

VR550

/39/58

Service

Service

Service Manual

Contents

Chapter

Adjustment Procedure

Sec. 1:

Schematic Diagrams and CBA's
Exploded Views
Mechanical and Electrical Parts Lists

Survey of versions:

/02 PAL B/G
/07 PAL I, UK/IRELAND
/16 PAL B/G, Spain
/39 PAL/SECAM-BG+PAL/SECAM-L/L',FRANCE
/58 PAL-BG/DK+SECAM-BG/DK,EAST-EURO

Sec. 2:

Standard Maintenance
Mechanism Alignment Procedures
Disassembly / Assembly of Mechanism
Deck Exploded Views

For technical data reference is made to the Service Manual of VR550/02/07/16
3103 785 22260. The present manual states only the differences.

Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified
be used.

Published by BK 2004 Video Service Department

Printed in the Netherlands c

Copyright reserved Subject to modification GB 3103 785 22270

OPERATING CONTROLS AND FUNCTIONS

[ VR550/ (39, 58) ]

The remote control

REC STANDBY/ON

1 2 3

4 5 6

7 8 9

0

PLAYSTATUS/EXIT CLEAR

REW FWD

MENU

STOP

TV-PROG.TV-VOL

STILL

SLOW SYSTEM

INDEXMUTE

TURBO

TIMER

AUDIO

Buttons for VCR feature only

To record the TV channel selected at this moment.

REC

STANDBY/ON

0..9

Press to select channels at VCR.

+

PP

P–P

slow motion playback, press to adjust the tracking.

STATUS/EXIT

status display. To exit on-screen menus.

CLEAR

recording (TIMER). To reset the elapsed time counter in the
playback, recording or stop mode.

STILL

step. (except for during fast forwarding and fast rewinding)

INDEX

or next recording on the cassette.

SLOW

AUDIO

TURBO TIMER

TURBO TIMER.

SYSTEM

MENU

FWD

at high speed. During playback, press to fast forward the tape while the
picture stays on the screen. To store or confirm entry in the menu.

REW

high speed. During playback, press to rewind the tape while the picture stays
on the screen.To return the cursor in the menu.

PLAY

STOP

To switch off or on, interrupt menu function.

To select the programme number. During normal or

To access or remove the VCR’s on-screen

To delete last entry. To clear a programmed

To stop the tape and play back a picture step by

In combination with

/ :to search for previous

To view the picture in slow motion.

To change stereo sound and 2nd language.

To programme a recording with the function

To change the Video (Colour) System.

To call up main menu of VCR.

-

When tape playback is stopped, press to fast forward the tape

-

When tape playback is stopped, press to rewind the tape at

-

To play back a tape, select an item in the menu of VCR.

To stop the tape, select an item in the menu of VCR.

-

Buttons with TV feature

MUTE

To eliminate the TV’s sound. Press again to restore the volume.

TV-VOL

TV-PROG.

+

+

TV-VOL

TV-PROG.

–

To adjust the TV’s volume.

–

To select a programme number on the TV.

You can use this remote control to operate

some functions of Philips TVs.

1-5-3 HG473IB

Front of your VCR

STANDBY/ON PROGRAMME RECORD STOP/EJECT REW PLAY FWD

STANDBY/ON

To switch off or on, interrupt menu function.

PROGRAMME-PROGRAMME+

To select the programme number. During

normal or slow motion playback, press to adjust the tracking.

RECORD

To record the TV channel selected at this moment.

When tape playback is stopped, press to fast forward the tape at high

FWD.

speed. During playback, press to fast forward the tape while the picture stays on
the screen.

When tape playback is stopped, press to rewind the tape at high speed.

REW.

During playback, press to rewind the tape while the picture stays on the screen.

To play back a tape.

PLAY

STOP/EJECT

To stop the tape and eject the cassette.

Back of your VCR

AV 2 (DECODER) AV 1 (TV)

AERIAL

RF OUT

)

AV2(DECODER

AV1(TV

AERIAL

RF OUT

To connect a satellite receiver, decoder, video recorder, etc.

)

To connect the TV.

To connect the aerial cable.

To connect the TV.

1-5-4 HG473IB

SIGNAL NAME ABBREVIATIONS

[ VR550/ (39, 58) ]

Signal Name Function

16P SCART 16Pin Control Signal

4.43MHz 4.43MHz Clock

8POUT-1

8POUT-2

A-COM Audio Head Common

A-IN Audio Signal Input

A-MODE Hi-Fi Tape Detection Signal

A-MUTE-H

A-OUT Audio Signal Output

A-PB/REC

AE-H Audio Erase Head

AFC

AGC IF AGC Comparator Signal

AL+12V

AL+12V/+20.5V

AL+15V

AL+44V

AL+5V

AL+9V

AMPC CTL AMP Connected Terminal

AMPVcc AMPVcc

AMPVREF IN V-Ref for CTL AMP

AMPVREF OUT V-Ref for CTL AMP

AVc c

C-CONT Capstan Motor Control Signal

C-F/R

SCART 1 8Pin Output Control
Signal

SCART 2 8Pin Output Control
Signal

Audio Mute Control Signal (Mute
= “H”)

Normal Audio Play Back/Record
Signal

Automatic Frequency Control
Signal

Always +12V with AC Plug
Connected

Always +12V/+20.5V with AC
Plug Connected

Always +15V with AC Plug
Connected

Always +9V with AC Plug
Connected

Always +5V with AC Plug
Connected

Always +9V with AC Plug
Connected

A/D Converter Power Input/
Standard Voltage Input

Capstan Motor FWD/REV
Control Signal (FWD=”L”/
REV=”H”)

Signal Name Function

C-ROTA

C-SYNC Composite Synchronized Pulse

CLKSEL Clock Select (GND)

CTL (+)

CTL (-)

CTLAMPout To Monitor for CTL AMP Output

D-CONT Drum Motor Control Signal

D-PFG Drum Motor Pulse Generator

D-REC-H Delayed Record Signal

D-V-SYNC Dummy V-sync Output

DRV-CLK

DRV-DATA

DRV-STB

END-S Tape End Position Detect Signal

FE-H Full Erase Head

FSC-IN
[4.43MHz]

FTV-IN

H-A-COMP Head Amp Comparator Signal

H-A-SW

Hi-Fi-A Hi-Fi Audio Head

Hi-Fi-COM Hi-Fi Audio Head Common

Hi-Fi-H-SW

HLF LPF Connected Terminal (Slicer)

IIC-BUS SCL

IIC-BUS SDA

JK1-8P-OUT

KEY-1 Key Scan Input Signal 1

KEY-2 Key Scan Input Signal 2

Color Phase Rotary Changeover
SIgnal

Playback/Record Control Signal
(+)

Playback/Record Control Signal
(-)

LED Clock Driver IC Control
Clock

LED Clock Driver IC Control
Data

LED Clock Driver IC Chip Select
Signal

4.43MHz Clock Input

Comparator Input of Video
Signal for Follow TV

Video Head Amp Switching
Pulse

Hi-Fi Audio Head Switching
Pulse

2

C BUS Control Clock

I

2

I

C BUS Control Data

SCART 8Pin Output Control
Signal

C-FG

C-POW-SW Capstan Power Switching Pulse

Capstan Motor Rotation
Detection Pulse

LD-SW

LINE-MUTE Audio Mute Control Signal

1-6-3 HG473SNA

Deck Mode Position Detector
Signal

Signal Name Function

LM-FWD/REV Loading Motor Control Signal

LP LP

MOD-A Modulator Audio Output Signal

N-A-PB Normal Audio Playback

N-A-REC Normal Audio Recording

OSCin Clock Input for letter size

OSCout Clock Output for letter size

OSD-V-IN OSD Video Signal Input

OSD-V-OUT OSD Video Signal Output

OSDVcc OSDVcc

OSDVss OSDVss

P-DOWN-L

P-ON+15V +15V at Power-On Signal

P-ON+44V +44V at Power-On Signal

P-ON+5V +5V at Power-On Signal

P-ON-H Power On Signal at High

P80/C P80/C Terminal

Power Voltage Down Detector
Signal

Signal Name Function

TRICK-H

TU-AUDIO Tuner Audio Input Signal

TU-VIDEO Tuner Video Input Signal

V(L) Video L Head

V(R) Video R Head

V-COM Video Head Common

V-ENV

V-IN Video Signal Input

V-OUT Video Signal Output

Vcc Vcc

VIDEO Video Signal

Vss Vss(GND)

X-IN Main Clock Input

X-OUT Main Clock Input

XC-IN Sub Clock

XC-OUT Sub Clock

Special Playback = “H” in
SECAM Mode

Video Envelope Comparator
Signal

PB-H-OUT Playback Signal Output at High

PG-DELAY

POW-SAF

REC-SAF-SW

REMOCON-IN Remote Control Sensor

RESET System Reset Signal (Reset=”L”)

RESET+5V +5V at System Reset Signal

RF-SW Video Head Switching Pulse

RGB­THROUGH

S-REEL Supply Reel Rotation Signal

SC2-IN

SECAM-C-IN SECAM Chroma Signal Input

SECAM-FM­OUT

Video Head Switching Pulse
Signal Adjusted Voltage

P-ON Power Detection Input
Signal

Recording Safety SW Detect
(With Record tab="L"/With out
Record tab="H")

SCART 2 RGB Through Control
Signal

Input Signal from Pin 8 of
SCART2

SECAM FM Signal Output

SECAM-H SECAM Mode at High

SIF

ST-S

T-REEL Take Up Reel Rotation Signal

TIMER+5V +5V at Timer

Tuner Audio Intermediate
Frequency Signal

Tape Start Position Detector
Signal

1-6-4 HG473SNA

[ VR550/ (39, 58) ]

BLOCK DIAGRAMS

Servo/System Control Block Diagram

E

D

Model Mark

VR550/39

Comparison Chart of

VR550/58

Models & Marks

LED DISPLAY

FP562

SDA

SCL

SDA

SCL

TU701(TUNER UNIT)

3

5

12

11

SDA

SCL

IC503 (MEMORY)

5

6

TO

AUDIO BLOCK

A-MUTE-H

IIC-BUS SCL

IIC-BUS SDA

FROM/TO

Hi-Fi AUDIO

BLOCK

A-MODE

Hi-Fi-H-SW

IIC-BUS SCL

IIC-BUS SDA

LINE-MUTE

IIC-BUS SCL

IIC-BUS SDA

RF-SW

D-REC-H

C-ROTA

D-V-SYNC

FROM/TO

VIDEO BLOCK

V-ENV

H-A-SW

H-A-COMP

C-SYNC

TRICK-H

D

SECAM-H

KEY

TP507

SENS-INH

KEY

SWITCH

8

7

KEY- 2

KEY- 1REMOCON-IN

REMOTE

RS501

LD-SW

14

SENSOR

S-LED

D502

LD-SW

9

AL+5V

IC501

(SERVO/SYSTEM CONTROL)

:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.

:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.

:USED TO INDICATE A TEST POINT WITH NO TEST PIN.

:USED TO INDICATE A TEST POINT WITH A TEST PIN.

TEST POINT INFORMATION

AL+5V

NOTE FOR WIRE CONNECTORS:

1. PREFIX SYMBOL "CN" MEANS CONNECTOR.

(CAN DISCONNECT AND RECONNECT.)

2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER

HOLES OF THE PCB.

(WIRE IS SOLDERED DIRECTLY.)

SW507

SWITCH

ST-S

CTL(+)

CTL(-)

94

957610480

232221

D1D2D3

DRV-DATA

IC561

(LED DISPLAY)

28

686970

DRV-DATA

S-REEL

T-REEL

END-S

79

Q501

PS503

Q503

DRV-STB

DRV-CLK

2

1

DRV-STB

DRV-CLK

RESET

34

RESET

TIMER+5V

S-REEL

T-REEL

20

D4

17

a

P-ON+5V

161413e12

bcd

P-ON+5V

Q771,

IC771

(COMPARATOR)

9

7

f

Q772

14

8

FTV-IN

2 64

4

AND

11

j

6

17

13

H-A-SW

D-V-SYNC

H-A-COMP

AL+12V/+20.5V

P-ON+5V

58

V-ENV

C-SYNC

65

61

TRICK-H

SECAM-H

P-ON-H

C-POW-SW

P-DOWN-L

67

66

86

P-ON-H

C-POW-SW

P-DOWN-L

FROM/TO

POWER

SUPPLY

BLOCK

83

A-MUTE-H

REC-SAF-SW

PG-DELAY

2

31

VR501

SW-POINT

AL+5V

SW506

REC-SAFETY

5

13

11

10

AL+5V

28

A-MODE

Hi-Fi-H-SW

LINE-MUTE

IIC-BUS SCL

IIC-BUS SDA

LM-FWD/REV

D-CONT

D-PFG

77

81

90

P-ON+15V

AL+12V

CL502

P-ON+15V11AL+12V(2)10GND9D-PFG8D-CONT7LM-FWD/REV

12

GND5C-CONT4C-F/R3C-FG2P-ON+5V1AL+12V/+20.5V

6

RF-SW

D-REC-H

C-CONT

C-F/R

78

C-ROTA

C-FG

87

71

15

183316

72

32

19

" " = SMD

MAIN CBA

ST-S

Q504

Q505

SENSOR CBA

END-S

TP506

END-S

SENSOR CBA

(DECK ASSEMBLY)

V-IN1

TU-VIDEO

FROM

VIDEO

BLOCK

CL504

CL504

2 CTL(+)

1 CTL(-)

CONTROL

AC HEAD ASSEMBLY

HEAD

1-9-6

PG

SENSOR

CYLINDER ASSEMBLY CAPSTAN MOTOR

DRUM

M

MOTOR

M

CAPSTAN

MOTOR

M

LOADING

MOTOR

HG473BLS

Video Block Diagram

E

D

VIDEO (L)-1

HEAD

VIDEO (R)-1

HEAD

VIDEO (R)-2

HEAD

VIDEO (L)-2

HEAD

Model Mark

VR550/39

Comparison Chart of

VR550/58

Models & Marks

REC-VIDEO SIGNAL PB-VIDEO SIGNAL MODE: SP/REC

:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.

:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.

:USED TO INDICATE A TEST POINT WITH NO TEST PIN.

:USED TO INDICATE A TEST POINT WITH A TEST PIN.

IIC-BUS SDA

IIC-BUS SCL

FROM

SERVO/SYSTEM

CONTROL BLOCK

50

D

CYLINDER ASSEMBLY

FROM/TO SERVO/SYSTEM

H-A-SW

C-ROTA

D-V-SYNC

71

62

70

H-A-SW

D-V-SYNC

C-ROTA/RF-SW

RPRP

Y/C

MIX

FBC

CONTROL BLOCK

V-ENV

C-SYNC

TRICK-H

67

84

83

V-ENV

C-SYNC

H-A-COMP

PR

SECAM-H

AGC VXO

H-A-COMP

PAL/SECAM

IC370 (PAL/SECAM DECTECTOR)

1

171418216

29

28

PB-H OUT

21

C-PB

TP301

252928 44

X301

4.433619MHz

58 59

DETECTOR

WF2

(DECK ASSEMBLY)

123

456

RF-SW

TP502

87

AGC

+

C

1/2

D-REC-H

RF-SW

CHROMINANCE

SIGNAL

80

D-REC-H

PROCESS

V(L)-1

V(L)-2

CL253

V(R)-1

969593

SP

SP

SERIAL

DECORDER

Y. DELAY

P

R

LUMINANCE

7978

69684643

65

55

V-COM

HEAD

AMP

EP

SIGNAL

PROCESS

94

V(R)-2

V-COM

AGC

BYPASS

908988

EP

HEAD

CHARA.

INS.

Y

WF1

AMP

REC FM

CCD 1H DELAY

TEST POINT INFORMATION

NOTE FOR WIRE CONNECTORS:

1. PREFIX SYMBOL "CN" MEANS CONNECTOR.

(CAN DISCONNECT AND RECONNECT.)

2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER

HOLES OF THE PCB.

(WIRE IS SOLDERED DIRECTLY.)

" " = SMD

IC501 (OSD)

MAIN CBA

COLOR

-IN

OSD

CHARACTER

MIX

52

IC301

(Y/C SIGNAL PROCESS)

BUFFER

Q351

TU-VIDEO

V-IN1TO

SERVO/SYSTEM

CONTROL BLOCK

FRT

IN1

IN2

TUNER

485052

54

6

24

VIDEO IN

VIDEO OUT

TU701(TUNER UNIT)

1-9-7

IN2

FRT

MUTE

PB/EE

IN1

MUTE

TUNER

PB/EE

56

WF3

JACK CBA

J23

61

63

V-OUT

CL151

CL101

JK101

CL152

1

1

V-OUT1

V-OUT2

V-IN1

33

1

1

CL102

Q101

Q102

BUFFER

BUFFER

JK102

19

20

19

V-OUT1

V-IN1

V-OUT2

V-IN2 3

3

20

V-IN2

HG473BLV

Audio Block Diagram

Mode : SP/REC

PB-AUDIO SIGNAL REC-AUDIO SIGNAL

TO SERVO/SYSTEM

11

12

SERIAL

DECODER

AUDIO HD-SW

CONTROL

71

68 69

16

MUTE

LINE

AMP

ALC

ALC

DET

IN1

1513 17

TUNER IN2

INV

P

R

ATT

98

REC-ON

REC

AMP

100

7

3

CONTROL BLOCK

A-MUTE-H

IIC-BUS SCL

IIC-BUS SDA

MAIN CBA

:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.

:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.

:USED TO INDICATE A TEST POINT WITH NO TEST PIN.

:USED TO INDICATE A TEST POINT WITH A TEST PIN.

TEST POINT INFORMATION

NOTE FOR WIRE CONNECTORS:

1. PREFIX SYMBOL "CN" MEANS CONNECTOR.

(CAN DISCONNECT AND RECONNECT.)

2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER

HOLES OF THE PCB.

(WIRE IS SOLDERED DIRECTLY.)

" " = SMD

N-A-PB

N-A-REC

TO Hi-Fi

AUDIO BLOCK

IC301

(AUDIO SIGNAL PROCESS)

EQ

PB-ON

5

AMP

6

SP/LP-ON

+5V

AUTO

BIAS

2

Q401

CL504

BIAS

Q402

3 A-PB/REC

4 A-COM

6 AE-H

1

Q406

OSC

5 AE-H/FE-H

Q403

CL501

+5V

Q405

2 FE-H

(PB=ON)

1 FE-H-GND

FE HEAD

ACE HEAD ASSEMBLY

AUDI O

HEAD

AUDI O

ERASE

HEAD

FULL

ERASE

HEAD

1-9-8

(DECK ASSEMBLY)

HG473BLA

Hi-Fi Audio Block Diagram

TU701

SIF OUT

(TUNER UNIT)

22

AUDIO OUT

21

D

AUDIO IN

2

E

FROM/TO

SERVO/SYSTEM

CONTROL BLOCK

Hi-Fi

CYLINDER

ASSEMBLY

AUDIO

(R) HEAD

Hi-Fi

AUDIO

(L) HEAD

REC-AUDIO SIGNALPB-AUDIO SIGNAL Mode : SP/REC

MAIN CBA

:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.

:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.

:USED TO INDICATE A TEST POINT WITH NO TEST PIN.

:USED TO INDICATE A TEST POINT WITH A TEST PIN.

TEST POINT INFORMATION

2

CN701

SIF
2

CN1

AFV CBA

4

TU-AUDIO(R)
4

CN701 C N1

D

1

TU-AUDIO
1

IF SIGNAL

PROCESS

5

TU-AUDIO(L)
5

7374727677

MUTE-ON

VCO MUTE

OUTPUT

SELECT

75

MUTE-ON

A-MODE

IIC-BUS SCL

IIC-BUS SDA

Q451

37

38

LOGIC

R-CH

BPF

NOISE

COMP

SW

NOISE

PPR

R-CH

PNR

LINE-MUTE

21

53

MUTE

ENV

DET

DET

VCO

LIM DEV

Hi-Fi-H-SW

39

HOLD

PULSE

LPF

(DECK ASSEMBLY)

LPF

MIX V/I

VCO

LIM DEV

R

DO

L-CH

DET

PNR

CL253

Hi-Fi-A(R) 7

242627

R

Hi-Fi-COM 8

LIM

L-CH

COMP

SW

Hi-Fi-A(L) 9

L

34 33

BPF

NOISE

NOTE FOR WIRE CONNECTORS:

1. PREFIX SYMBOL "CN" MEANS CONNECTOR.

(CAN DISCONNECT AND RECONNECT.)

2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER

HOLES OF THE PCB.

(WIRE IS SOLDERED DIRECTLY.)

" " = SMD

CL151

9

A-IN1(R)

9

CL101

JACK CBA

JK101

2

A-IN1(R)

5

A-OUT1(R)

A-IN1(L) 7

7

5

6

1

A-IN1(L)

A-OUT1(R)

A-OUT1(L) 11

11

JK102

3

A-OUT1(L)

CL152

9

A-IN2(R)

9

CL102

2

A-IN2(R)

6

A-OUT2(R)

A-IN2(L) 8

8

6

6

1

A-OUT2(R)

A-IN2(L)

A-OUT2(L) 11

11

3

A-OUT2(L)

(Hi-Fi AUDIO SIGNAL PROCESS)

IC451

67

65

E

D

Model Mark

VR550/39

Comparison Chart of

VR550/58

Models & Marks

SW

SW

ALC

ALC

ALC

L-CH

6108

14

INSEL

15

4

ALC

+

78

N-A-REC

80

N-A-PB

TO AUDIO BLOCK

47

48

70

62

61 71

R-CH

INSEL

5256545060

2

1-9-9

HG473BLH

Power Supply Block Diagram

P-ON+44V

P-ON+15V12P-ON-H

AL+12V/+20.5V

AL+9V

AL+12V

C-POW-SW

AL+5V

TIMER+5V

P-ON+5V

P-DOWN-L

Q053

MAIN CBA

CAUTION !

Fixed voltage (or Auto voltage selectable ) power supply circuit is used in this unit.

If Main Fuse (F001) is blown, check to see that all components in the power supply

circuit are not defective before you connect the AC plug to the AC power supply.

Otherwise it may cause some components in the power supply circuit to fail.

Q051

T001

2

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,

REPLACE ONLY WITH THE SAME TYPE T1.6AL/250V FUSE.

Q052

Q057

13

14

4

Q058

Q055

15

Q001

Q054

Q059

16

Q056

SHUNT

REGULATOR

Q004

11

17

18

1

4

IC001

ERROR

6

7

VOLTAGE DET

COLD

23

D001 - D004

L003

F001

HOT CIRCUIT. BE CAREFUL.

NOTE :

The voltage for parts in hot circuit is measured using

hot GND as a common terminal.

BRIDGE

RECTIFIER

LINE

FILTER

T1.6A L 250V

AC001

1-9-10

Q002

Q003

HOT

HG473BLP

[ VR550/ (39, 58) ]

MAIN 1/7 Schematic Diagram Parts Location Guide

Ref No. Position Ref No. Position Ref No. Position

CAPACITORS
C501 B-1 C862 D-3 R522 E-4
C502 B-1 R523 B-4
C506 C-1 CL501 A-2 R524 B-4
C508 E-2 CL502 F-4 R525 B-3
C510 E-2 CL504 A-2 R526 A-2
C511 E-2 R527 A-2
C512 E-2 D501 E-4 R528 B-1
C513 E-2 D502 A-1 R529 A-1
C514 E-2 D552 E-3 R530 E-1
C515 E-2 D553 E-2 R531 E-1
C516 E-2 R533 D-1
C517 E-4 IC501 C-3 R551 E-3
C518 E-4 IC503 A-4 R552 E-3
C519 B-4 R553 E-2
C520 A-3 L501 A-1 R555 C-1
C521 A-2 L851 D-3 R557 C-1
C522 A-2 R558 C-1
C523 A-2 Q501 E-2 R615 D-1
C524 A-2 Q503 D-1 R621 A-3
C526 A-2 Q551 E-3 R622 A-3
C527 B-2 Q552 E-3 R851 D-3
C528 A-2 R852 D-3
C530 B-2 R501 B-1 R853 D-4
C531 B-1 R502 B-2
C532 A-3 R503 C-2 SW506 D-1
C533 A-3 R504 B-1
C535 E-1 R505 B-1 VR501 B-1
C563E-4R506C-1
C564 E-4 R509 D-1 X501 D-2
C567 F-4 R510 C-4 X502 D-2
C851E-3E511E-2
C852 E-3 R51 3 E-2 PS503 E-1
C853 D-3 R514 E-2 RS501 B-2
C854E-3R516D-2
C855 D-3 R517 D-3 TP501 A-2
C856 D-4 R518 F-3 TP502 C-1
C858 D-4 R520 E-4
C859 D-4 R521 E-4

CAPACITORS

CONNECTORS

DIODES

ICS

COILS

TRANSISTORS

RESISTORS

RESISTORS

SWITCH

VARIABLE RESISTOR

CRYSTAL OSCILLATORS

MISCELLANEOUS

TEST POINTS

1-10-31

Main 1/7 Schematic Diagram

Comparison Chart of
Models and Marks

MODEL MARK

VR550/39 D
VR550/58 E

0.00 ~ 0.51V POWER

0.51 ~ 0.92V CH DOWN

0.92 ~ 1.27V CH UP PLAY

1.27 ~ 1.61V ----------------

1.61 ~ 1.98V ---------------- --------------

1.98 ~ 2.39V REC/O TR --------------

2.39 ~ 2.90V ---------------- --------------

2.90 ~ 3.60V SE NS-INH --------------

3.60 ~ 4.30V ---------------- --------------

4.30 ~ 5.00V K EY OFF KEY OF F

Pin No.
Voltage

KEY 1 (7 PIN) KEY 2 (8 PIN)

“ “ = SMD

MODE: SP/REC

THE SAME VOLTAGE FOR

BOTH PLAY & REC MODES.

2

1

5.0

3

5.0

~

(2.5)

INDICATES THAT THE VOLTAGE

IS NOT CONSISTENT HERE.

PLAY MODE

REC MODE

IC501 KEY VOLTAGE CHART

STOP/EJECT
REW

FF

1-10-32 1-10-33

HG473SCM1

Main 2/7 & Sensor Schematic Diagrams

D1 D2 D3 D4

a

b

c

d

e

f

g

c

d

e

f

g

c

d

e

f

g

c

d

e

f

g

h

j

i

a

b

c

d

e

f

g

a

b

a

b

a

b

FP562 MATRIX CHART

Comparison Chart of
Models and Marks

MODEL MARK

VR550/39 D
VR550/58 E

D1 D2 D3 D4

“ “ = SMD

a

f

g

e

d

MODE: SP/REC

THE SAME VOLTAGE FOR

BOTH PLAY & REC MODES.

2

1

5.0

3

5.0

~

(2.5)

INDICATES THAT THE VOLTAGE

IS NOT CONSISTENT HERE.

PLAY MODE

REC MODE

b

c

1-10-34

1-10-35

HG473SCM2

MAIN 2/7 Schematic Diagram Parts Location Guide

Ref No. Position Ref No. Position

CAPACITORS RESISTORS
C538 K-4 R539 K-3
C540 J-3 R540 K-4
C561 J-3 R541 K-4
C562 G-3 R542 J-2
C701 H-2 R543 J-2
C702 I-2 R544 K-2
C704 G-2 R545 K-2
C706 H-1 R546 K-2
C708 G-1 R547 J-2
C716 G-1 R548 K-2
C717 G-1 R549 K-2

CONNECTORS

CL505 K-2 R701 G-2

CN701 K-1 R702 G-1

DIODE

D701 G-2 R706 G-1

IC

IC561 J-4

COILS
L561 G-3 SW502 J-2
L562 G-3 SW503 K-2
L701 I-2 SW505 K-2
L703 H-2 SW507 J-3
L704 H-1 SW509 J-2

TRANSISTORS
Q504 L-4 SW511 K-2
Q505 L-4 SW512 K-2

RESISTORS

R534 J-3 FP562 H-4
R535 J-3 TU701 H-2
R536 J-3
R537 J-3 TP506 K-4
R538 K-3 TP507 K-2

R566 J-4

R703 G-1

R707 I-1

SWITCHES

SW501 J-2

SW510 K-2

MISCELLANEOUS

TEST POINTS

1-10-36

MAIN 3/7 Schematic Diagram Parts Location Guide

Ref No. Position Ref No. Position Ref No. Position Ref No. Position

CAPACITORS CAPACITORS RESISTORSTRANSISTORS
C251 N-3 C347 O-4 Q402 N-1 R402 N-2
C252 N-3 C351 N-4 Q403 N-1 R403 N-2
C253 N-3 C352 M-4 Q405 M-1 R404 M-2
C254 N-3 C401 N-2 Q406 N-1 R407 M-1
C302 P-1 C402 N-1 Q771 R-1 R408 N-2
C303 P-1 C403 M-2 Q772 R-1 R409 N-2
C304 P-2 C404 M-1 R411 N-2
C305 P-1 C411 O-1 R251 N-3 R412 O-2
C307 P-2 C412 O-2 R252 N-3 R413 O-2
C308 P-1 C414 O-1 R301 P-1 R414 O-1
C309 P-1 C415 O-1 R302 P-1 R415 O-1
C310 Q-2 C416 O-2 R303 Q-2 R416 O-1
C311 Q-2 C417 O-1 R304 Q-2 R417 O-1
C312 Q-2 C418 O-1 R305 Q-2 R418 N-1
C313 Q-2 C419 O-1 R307 P-4 R421 O-1
C314 Q-3 C421 O-2 R308 P-4 R422 O-1
C315 Q-3 C422 O-1 R309 P-4 R425 O-1
C316 Q-3 C424 O-2 R310 O-4 R426 O-1
C317 Q-3 C425 O-1 R311 O-4 R429 O-1
C318 Q-3 C428 O-1 R312 N-4 R430 O-1
C319 Q-3 C430 P-1 R313 N-4 R431 P-1
C320 Q-3 C771 Q-2 R315 O-4 R771 Q-1
C321 Q-3 C772 R-1 R316 O-4 R772 Q-1
C322 Q-3 C773 R-2 R317 O-4 R773 Q-1
C323 Q-3 C774 R-2 R318 O-4 R774 Q-1
C324 Q-3 C775 Q-2 R319 N-4 R775 Q-1
C325 Q-4 C776 Q-2 R320 O-4 R776 R-1
C326 Q-4 C777 Q-2 R321 Q-4 R777 R-1
C327 P-4 C778 Q-2 R323 Q-3 R778 Q-2
C330 P-4 R324 N-3 R779 Q-2
C332 P-4 CL253 M-3 R325 Q-3 R780 Q-2
C333 P-4 R326 Q-3 R781 Q-2
C334 P-4 D301 N-4 R330 Q-3 R782 R-2
C335 P-4 R331 Q-2 R783 Q-2
C336 O-4 IC301 N-2 R332 P-4 R784 Q-2
C337 O-4 IC771 Q-1 R334 Q-3 R785 Q-2
C338 O-4 R351 N-4 R786 Q-2
C339 O-4 L251 N-3 R352 N-4 R787 Q-1
C340 O-4 L301 O-4 R355 N-4
C341 O-4 L403 N-1 R357 M-4 X301 P-2
C342 O-4 R358 N-4
C343 O-4 Q351 N-4 R360 M-4 TP301 M-3
C345 Q-3 Q352 N-3 R361 N-3
C346 P-4 Q401 N-2 R401 N-2

CONNECTOR

DIODE

ICS

COILS

RESISTORS

CRYSTAL OSCILLATOR

TEST POINTTRANSISTORS

1-10-37