Philips VR540/39, VR740/02, VR540/58, VR740/16, VR740/58 Service Manual

Video Cassette Recorder

VR540

/39

VR740

/58

Service
Service

Service

VR540
VR740
VR740
VR740

/58

/02

/07

/16

VR742
VR742
VR742

/16

/39

/58

Service Manual

Contents

Chapter

Schematic Diagrams and CBA's

Sec. 1:

Exploded Views
Mechanical and Electrical Parts Lists

Survey of versions:

/02 PAL B/G
/07 PAL I, Ireland
/16 PAL B/G, Spain
/39 SECAM L,L' & PAL B/G
/58 PAL/SECAM B/G, D/K

For technical data reference is made to the Service Manual of VR540/02/07/16
3103 785 22160. 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 2003 Video Service Department Printed in Japan c

Copyright reserved Subject to modification GB 3103 785 22170

OPERATING CONTROLS AND FUNCTIONS

1 2 3

4 5 6

7 8 9

P

0

P

P

STILL

STOP

MENU

REW FWD

PLAYSTATUS/EXIT CLEAR

VCR TV

REC STANDBY/ON

PROGVOL

INDEXMUTE SLOW SYSTEM

AUDIO

y

[ VR540/ (39,58)]

The remote control

Buttons for VCR feature only

VCR

To operate the VCR with the remote control.

CLEAR

(TIMER).

press repeatedly to start a One-Touch Recording.

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

INDEX

next

SLOW

AUDIO

SYSTEM

MENU

FWD

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

REW

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

PLAY

STOP

VCR.

To delete last entry/Clear programmed recording

REC

To record the TV channel selected at this moment or

STILL

To stop the tape and slow a still picture.

+

PROG P–PROG P

In combination with

To select the programme number.

:to search for previous or

0 /1

recording on the cassette.

To view the picture in slow motion.

To change stereo sound and 2nd language.

To change the video (colour) system.

To call up main menu of VCR.

When tape playback is stopped, press to fast

-

When tape playback is stoped, press to rewind

-

K

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

B-

C- L

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

Buttons with TV feature

TV

To call up additional TV functions.

y

STANDBY/ON

To switch VCR or Philips TV on or off, interrupt menu

function.

STATUS/EXIT

To access or remove the VCR’s on-screen status display.
To exit on-screen menus. Or, to access or remove a status display or menu
of Philips TV.

0..9

Press to select channels at VCR or Philips TV.

MUTE

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

VOL 5

VCR

–

To adjust the TV’s volume.

+

VOL

Press before pressing a VCR-feature key.

You can use this remote control to operate some func-

tions of Philips TVs. Press before pressing a TV-

TV

feature key.

1-5-3 HE473IB

Front of the device

RF OUT

AV2 (DECODER) AV1 (TV)

AERIAL

FWDPLAYREWSTOP/EJECTRECORDPROGRAMMESTANDBY/ON

STANDBY/ON

motion playback, press to adjust the tracking.

RECORD

When tape playback is stopped, press to fast forward the tape at hight speed. During

FWD

playback, press to fast forward the tape while the picture stay on the screen.

When tape playback is stoped, press to rewind the tape at hight speed. During playback,

REW

press to rewind the tape while the picture stay on the screen.

PLAY

To play a tape.

STOP/EJECT

To switch off or on, interrupt a function.

PROGRAMME-PROGRAMME+

To record the TV channel selected at this moments.

To stop the tape and eject the cassette.

To select the programme number. During normal or slow

Back of the set

AV2(DECODER)

AV1(TV)

AERIAL

RF OUT

To connect the TV set(programme number).

To connect the aerial cable.

To connect the TV set.

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

1-5-4 HE473IB

[ VR740/ (02, 07, 16, 58), VR742/ (16, 39, 58) ]

The remote control

REC STANDBY/ON

1 2 3

4 5 6

7 8 9

VCR TV

0

PLAYSTATUS/EXIT CLEAR

REW FWD

MENU

STOP

PROGVOL

STILL

INDEXMUTE SLOW SYSTEM

TURBO

SV / V+ AUDIO

TIMER

Buttons for VCR feature only

VCR

To operate the VCR with the remote control.

CLEAR

recording (TIMER).

moment or press repeatedly to start a One-Touch
Recording.

STILL

number. During normal or slow motion playback, press

P

P

to adjust the tracking.

INDEX

P

previous or next recording on the cassette.

SLOW

AUDIO

SYSTEM

[ VR740/ (02, 07, 16), VR742/ (16) ]

[ VR740/ (58), VR742/ (39, 58) ]

TURBO TIMER

function TURBO TIMER.

SV/V

SHOWVIEW system.

PLAY

of VCR.

STOP

menu of VCR

FWD

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

REW

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

To delete last entry/Clear programmed

REC

To record the TV channel selected at this

To stop the tape and slow a still picture.

+

PROG P–PROG P

To select the programme

In combination with / :to search for

To view the picture in slow motion.

To change stereo sound and 2nd language.

Doesn’t

work in these

models.

To change the video (colour) system.

To programme a recording with the

+

To make a TIMER programming with

To call up main menu of VCR.

MENU

To play a tape, select an item in the menu

-

To stop the tape, select an item in the

-

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

-

When tape playback is stoped, press to rewind the tape at high

-

Buttons with TV feature

TV

To call up additional TV functions.

STANDBY/ON

STATUS/EXIT

on-screen menus. Or, to access or remove a status display or menu of Philips TV.

0..9

Press to select channels at VCR or Philips TV.

MUTE

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

+

VOL

Press before pressing a VCR-feature key.

VOL

VCR

You can use this remote control to operate some functions of

Philips TVs. Press before pressing a TV-feature key.

To switch VCR or Philips TV on or off, interrupt menu function.

To access or remove the VCR’s on-screen status display. To exit

–

To adjust the TV’s volume.

TV

1-5-5 HE473IB

Front of the device

STANDBY/ON

STANDBY/ON

PROGRAMME

PWR. REC

RECORD

To switch off or on, interrupt a function.

PROGRAMME-PROGRAMME+

To select the programme number. During

STOP/EJECT

FWDPLAYREWSTILL

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

RECORD

To record the TV channel selected at this moments.

FWD

When tape playback is stopped, press to fast forward the tape at high speed.
During playback, press to fast forward the tape while the picture stay on the screen.

REW

When tape playback is stoped, press to rewind the tape at hight speed. During
playback, press to rewind the tape while the picture stay on the screen.

PLAY

STOP/EJECT

STILL

To play a tape.

To stop the tape and eject the cassette.

o stop the tape and slow a still picture.

T

Back of the set

AV 2 (DECODER) AV 1 (TV)

AUDIO OUTPUT L

AV2(DECODER)

AV1(TV)

AERIAL

RF OUT

To connect the TV set.

To connect the aerial cable.

To connect the TV set.

AUDIO

OUTPUT

AERIAL

L

RF OU T

R

To connect a HIFI-set.

R

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

1-5-6 HE473IB

SIGNAL NAME ABBREVIATIONS

[ VR540/ (39, 58), VR740/ (02, 07, 16, 58), VR742/ (16, 39, 58) ]

Signal Name Function

Signal Name Function

4.43MHz 4.43MHz Clock

8POUT-1

8POUT-2

A-COM Audio Head Common

A-IN 1, 2 Audio Signal Input 1, 2

A-MODE Hi-Fi Tape Detection Signal

A-MUTE-H

A-OUT 1, 2 Audio Signal Output 1, 2

A-PB/REC

AE-H Audio Erase Head

AFC

AGC IF AGC Control Signal

AL+12/+20.5V

AL+44V

AL+5V

AL+9V

AMPC CTL AMP Connected Terminal

AMPVcc AMPVcc

AMPVREF
OUT

AMPVREF

AVcc

C-CONT Capstan Motor Control Signal

C-F/R

C-FG

C-POW-SW Capstan Power Switching Pulse

C-POWER­SW

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/+20.5V with AC Plug
Connected

Always +9V with AC Plug
Connected

Always +5V with AC Plug
Connected

Always +9V with AC Plug
Connected

V-Ref fo r C T L A MP

IN V-Ref fo r C T L A MP

A/D Converter Power Input/
Standard Voltage Input

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

Capstan Motor Rotation Detection
Pulse

Capstan Power Switching Pulse

C-ROTA

C-SYNC Composite Synchronized Pulse

C-SYNC Composite Synchronized Pulse

CLKSEL Clock Select (GND)

COLOR-IN

CTL (+)

CTL (-)

CTLAMPout To Monitor for CTL AMP Output

D-CONT Drum Motor Control Signal

D-PG Drum Motor Pulse Generator

D-REC-H Delayed Record Signal

D-V- SYNC Dummy V-sync Output

DAVN-L VPS/PDC Data Receive = “L”

DRV-CLK LED Clock Driver IC Control Clock

DRV-DATA LED Clock Driver IC Control Data

DRV-STB

END-S Tape End Position Detect Signal

FE-H GND Ground for Full Erase Head

FF/REW-L

FSC-IN
[4.43MHz]

FTV-IN

H-A-COMP Head Amp Comparator Signal

H-A-SW Video Head Amp Switching Pulse

Hi-Fi-A (L) Hi-Fi Audio Head (L)

Hi-Fi-A (R) Hi-Fi Audio Head (R)

Hi-Fi-COM Hi-Fi Audio Head Common

HiFi-H-SW HiFi Audio Head Switching Pulse

HLF LPF Connected Terminal (Slicer)

2

C BUS- SCL I2C BUS Control Clock

I

2

I

C BUS- SDA I2C BUS Control Data

Color Phase Rotary Changeover
SIgnal

SECAM or MESECAM Chroma
Video Input Signal at Super
Impose

Playback/Record Control
Signal (+)

Playback/Record Control
Signal (-)

LED Clock Driver IC Chip Select
Signal

CTL Amp Gain Switching Signal
(FF/REW=”L”)

4.43MHz Clock Input

Comparator Input of Video Signal
for Follow TV

1-6-3 HE473SNA

Signal Name Function

JK1-8P-OUT

SCART 8Pin Output Control
Signal

KEY-1 Key Scan Input Signal 1

KEY-2 Key Scan Input Signal 2

Signal Name Function

SC2-IN Input Signal from Pin 8 of SCART2

SECAM-C-IN SECAM Chroma Signal Input

SECAM-FM­OUT

SECAM FM Signal Output

LD-SW

Deck Mode Position Detector
Signal

LINE MUTE Audio Mute Control Signal

LINK-IN Easy Link Data Input

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

IN

OSC

OUT Clock Output for letter size

OSC

Clock Input
for letter size

OSD-V-IN OSD Video Signal Input

OSD-V-OUT OSD Video Signal Output

OS DVcc OSDVcc

P-DOWN-L

Power Voltage Down Detector
Signal

P-OFF-H Power Off at High

SECAM-H SECAM Mode at High

SIF Intermediate Frequency

ST-S

Tape Start Position Detector
Signal

T-REEL Take Up Reel Rotation Signal

TIMER+5V +5V at Timer

TRICK-H

Special Playback = “H” in SECAM
Mode

TU-AUDIO Tuner Audio Input Signal

TU-VIDEO Tuner Video Input Signal

V-ENV

Video Envelope Comparator
Signal

V-IN 1, 2 Video Signal Input 1, 2

V-OUT 1, 2 Video Signal Output 1, 2

Vcc Vcc

VIDEO Video Signal

Vss Vss(GND)

X-IN Main Clock Input

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

P-ON+32V +32V 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

PB-H-OUT Playback Signal Output at High

PG-DELAY

POW-SAF

Video Head Switching Pulse
Signal Adjusted Voltage

P-ON Power Detection Input
Signal

Recording Safety SW Detect (With

REC-SAF-SW

Record tab="L"/With out Record
tab="H")

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

SCART 2 RGB Through Control
Signal

X-OUT Main Clock Input

XC-IN Sub Clock

XC-OUT Sub Clock

S-REEL Supply Reel Rotation Signal

1-6-4 HE473SNA

CABINET DISASSEMBLY INSTRUCTIONS

[ VR740/ (02, 07, 16, 58), VR742/ (16, 39, 58) ]

1. Disassembly Flowchart

This flowchart indicates the disassembly steps to gain
access to item(s) to be serviced. When reassembling,
follow the steps in reverse order. Bend, route, and
dress the cables as they were originally.

[1] Top Case

[2] Front Assembly

[3] VCR Chassis Unit

[4] Jack CBA

[5] Deck Assembly

[6] Main CBA

[9] Rear Panel

[7] Function CBA

[8] Cylinder Shield

2. Disassembly Method

REMOVAL

ID/

LOC.

No.

PART

REMOVE/*UNHOOK/

Fig.

UNLOCK/RELEASE/

No.

UNPLUG/DESOLDER

Note

(1): Identification (location) No. of parts in the figures
(2): Name of the part
(3): Figure Number for reference
(4): Identification of parts to be removed, unhooked,

unlocked, released, unplugged, unclamped, or
desoldered.
P=Spring, L=Locking Tab, S=Screw,
CN=Connector
*=Unhook, Unlock, Release, Unplug, or Desolder
e.g. 2(S-2) = two Screws (S-2),
2(L-2) = two Locking Tabs (L-2)

(5): Refer to “Reference Notes.”

Reference Notes

CAUTION: Locking Tabs (L-1) and (L-2) are fragile.
Be careful not to break them.

1. Remove five Screws (S-2), four Screws (S-3) and
Screw (S-4). Then, slowly lift the VCR Chassis Unit
(Deck Assembly, Jack CBA and Main CBA) up.

2. When reassembling, solder wire jumpers as shown
in Fig. 5.

3. Before installing the Deck Assembly, be sure to
place the pin of LD-SW on Main CBA as shown in
Fig. 6. Then, install the Deck Assembly while align­ing the hole of Cam Gear with the pin of LD-SW,
the shaft of Cam Gear with the hole of LD-SW as
shown in Fig. 6.

[1] Top Case 1 7(S-1) -

Front

[2]

Assembly

VCR

[3]

Chassis
Unit

[4] Jack CBA 4 Desolder, (S-5) -

Deck

[5]

Assembly

[6] Main CBA 5 (L-3) -

Function

[7]

CBA

Cylinder

[8]

Shield

Rear

[9]

Panel

↓

(1)

↓

(2)

2 *3(L-1),*4(L-2) -

3 5(S-2), 4(S-3), (S-4) 1

5,6 2(S-6), Desolder 2,3

5 Desolder (CN505) -

52(S-7) -

5 ---------- -

↓

(3)

↓

(4)

↓

(5)

(S-1)

(S-1)

[1] Top Case

(S-1)

Fig. 1

1-7-4 HE480DC

(L-2)

(S-5)

[4] Jack CBA

Desolder

[2] Front
Assembly

(S-2)

(S-3)

(L-1)

(S-3)

(S-2)

(L-2)

Fig. 4

Fig. 2

(S-2)

(S-4)

(S-3)

(S-2)

[3]VCR
Chassis Unit

(S-3)

Fig. 3

1-7-5 HE480DC

[8] Cylinder Shield

FE Head

[9] Rear Panel

Cylinder Assembly

(S-7)

AC Head
Assembly

Pin

SW507
LD-SW

(L-3)

CN505
(Desolder
from bottom)

From
FE Head

[7] Function CBA

TOP VIEW

From
Cylinder
Assembly

(S-6)

From
AC Head
Assembly

[5] Deck Assembly

[6] Main CBA

(S-6)

From
Capstan Motor
Assembly

Lead with
blue stripe

[6] Main CBA

[5] Deck Assembly

Shaft

Hole

LD-SW

Cam Gear

Hole

Pin

[6] Main CBA

Fig. 6

Printing

Lead with
blue stripe

Lead connections of Deck Assembly and Main CBA

Lead with
blue stripe

Desolder
from bottom

side

Fig. 5

1-7-6 HE480DC

[ VR540/ (39, 58), VR740/ (02, 07, 16, 39, 58), VR742/ (16, 39, 58) ]

Servo/System Control Block Diagram

Comparison Chart of
Models & Marks

Model Mark

VR540/39
VR540/58
VR740/02
VR740/07 G
VR740/16
VR740/39
VR740/58
VR742/16
VR742/39
VR742/58

Q504

ST-S

SENSOR CBA

Q505

END-S

SENSOR CBA

(DECK ASSEMBLY)

AC HEAD ASSEMBLY

CONTROL
HEAD

CYLINDER ASSEMBLY CAPSTAN MOTOR

PG
SENSOR

DRUM
MOTOR

M

LOADING
MOTOR

D
E
F

H

I

J

K

L

M

CL287

5 5CTL(+)
6 6CTL(-)

M

CL504

" " = SMD

MAIN CBA

FROM
VIDEO
BLOCK

CAPSTAN
MOTOR

END-S

TU-VIDEO

V-IN1

M

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
LD-SW

AL+5V

Q503

T-REEL

P-ON+5V

PS503TP506

11
10

12 P-ON+15V
11
10 GND

BLOCK DIAGRAMS

AL+5V

D502
S-LED

Q501

P-ON+5V

Q771,
Q772

AND

P-ON+15V
AL+12V

P-ON+5V
AL+12V/+20.5V

C-POW-SW
P-ON-H
P-DOWN-L

RESET

4
5

AL+5V

REC-SAFETY

S-REEL

IC771

(COMPARATOR)

9
8

AL+12V(2)

D-PFG

9

D-CONT

8

LM-FWD/REV

7

GND

6

C-CONT

5

C-F/R

4

C-FG

3

P-ON+5V

2

AL+12V/+20.5V

1

TIMER+5V

VR501
SW-POINT

CL502

FROM/TO
POWER
SUPPLY
BLOCK

14

13

AL+5V

TEST POINT INFORMATION

: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.

IC501

(SERVO/SYSTEM CONTROL)

RS501

REMOTE
SENSOR

2

SW506

REMOCON-IN

14

LD-SW9

95

CTL(+)
CTL(-)

94
10

ST-S

4

END-S
T-REEL

80

S-REEL79

RESET

34

FTV-IN

64

PG-DELAY

2

REC-SAF-SW

31

D-PG

90

D-CONT77
LM-FWD/REV

81

C-CONT

76

C-F/R

78

C-FG

87

C-POW-SW

66

P-ON-H

67

P-DOWN-L

86

F,G,H,I,
J,K,L,M

D,I,L

KEY- 1

KEY- 2

DRV-DATA

DRV-STB
DRV-CLK

A-MUTE-H

Hi-Fi-H-SW

A-MODE

LINE-MUTE

IIC-BUS SDA

IIC-BUS SCL

D-REC-H

RF-SW

C-ROTA

D-V SYNC

H-A-SW

H-A-COMP

V-ENV

C-SYNC

SECAM-H

7

8

SW509

ST/EJ

68
69
70

83

19
32
28

72
71
33
18
15
13
16

17

6

58

20DAVN-L

65TRICK-H

61

TP507

SENS-INH

KEY
SWITCH

IC561 (LED DISPLAY)

DRV-DATA

28

DRV-STB

2

DRV-CLK

1

CL505 CN651

1 1KEY-2

D,E

KEY
SWITCH

G1

23

G2

22

G3

21

G4

20

S1

7

S2

8

S7

13

S8

14

S9

16

S10

17

F,G,H,I,J,K,L,M

FUNCTION CBA

KEY SWITCH

FP562

LED DISPLAY

TU701(TUNER UNIT)

SDA

3

SDA

12

SCL

5

SCL

11

IC503 (MEMORY)

SDA

5

SCL

6

IIC-BUS SDA

IIC-BUS SCL

A-MUTE-H

IIC-BUS SDA

IIC-BUS SCL

Hi-Fi-H-SW

A-MODE

LINE-MUTE

IIC-BUS SDA

IIC-BUS SCL

D-REC-H

RF-SW

C-ROTA

D-V SYNC

H-A-SW

H-A-COMP

V-ENV

C-SYNC

DAVN-L

TRICK-H

SECAM-H

TO
AUDIO BLOCK

FROM/TO
Hi-Fi AUDIO
BLOCK

FROM/TO
VIDEO BLOCK

1-9-11 1-9-12 HE473BLS

Video Block Diagram

" " = SMD

MAIN CBA

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.)

IC501 (OSD)

OSD
CHARACTER

52

MIX

IC301

Q351

BUFFER

(Y/C SIGNAL PROCESS)

TEST POINT INFORMATION

COLOR

-IN

: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.

FROM
SERVO/SYSTEM
CONTROL BLOCK

50

55

D,E,I,J,L,M

65

DAVN-L
IIC-BUS SDA
IIC-BUS SCL

Comparison Chart of
Models & Marks

Model Mark

VR540/39

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

VR540/58
VR740/02

IC640 (VPS)

DAVN-L

14

6

IIC-BUS SDA

7

IIC-BUS SCL

VPS-V

16

F,G,H,I,J,K,L,M

VR740/07 G
VR740/16
VR740/39
VR740/58
VR742/16
VR742/39
VR742/58

69684643

7978

D
E
F

H

I

J

K

L

M

V-OUT1

V-IN1

V-OUT2

V-IN2

SERVO/SYSTEM
CONTROL BLOCK

JACK CBA

JK101

Q101

JK102

BUFFER

Q102

BUFFER

19
20

19
20

V-IN1TO
TU-VIDEO

TU701(TUNER UNIT)

VIDEO-IN

VIDEO-OUT

CL101

1

V-OUT1

V-IN1

3 3

CL102

1

V-OUT2

V-IN2 3

3

24

Y. DELAY

LUMINANCE
SIGNAL
PROCESS

6

48
50
52

56

WF1

J23

CL151

1

CL152

1

V-OUT

61
63

TUNER

PB/EE

TUNER

IN1

PB/EE

MUTE

IN1

IN2

FRT

IN2

FRT

MUTE

BYPASS

CHARA.
INS.

AGC VXO

58 59

FBC

AGC

CCD 1H DELAY

1/2

CHROMINANCE
SIGNAL
PROCESS

Y/C
MIX

PR

4.433619MHz

SERIAL

DECORDER

2928

X301

R

P

Y

REC FM

+

C

R P R P

25 44

TP301

C-PB

WF2

AGC

PB-H OUT

21

SP

SP

HEAD
AMP

EP

EP
HEAD
AMP

D-REC-H

C-ROTA/RF-SW

D-V-SYNC

H-A-SW

H-A-COMP

V-ENV

C-SYNC

96
95
93
94

90
89
88
87

80

70
62
71
83
84
67

CL253

V(R)-1

V-COM

V(L)-1

V(L)-2

V-COM

V(R)-2

WF1

TP502

RF-SW

D-V-SYNC

H-A-COMP

IC370 (PAL/SECAM DECTECTOR)

28

1
29
17
14
18

2
16

1
2
3
4
5
6

D-REC-H

RF-SW

C-ROTA

H-A-SW

V-ENV

C-SYNC

TRICK-H

SECAM-H

PAL/SECAM
DETECTOR

FROM/TO SERVO/SYSTEM
CONTROL BLOCK

CYLINDER ASSEMBLY

VIDEO (R)-1
HEAD

VIDEO (L)-1
HEAD

VIDEO (L)-2
HEAD

VIDEO (R)-2
HEAD

D,I,L

(DECK ASSEMBLY)

1-9-13 1-9-14 HE473BLV

Audio Block Diagram

" " = SMD

TO Hi-Fi
AUDIO BLOCK

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.)

N-A-PB
N-A-REC

TEST POINT INFORMATION

: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.

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

MAIN CBA

IC301

(AUDIO SIGNAL PROCESS) 1513 17

(DECK ASSEMBLY)

ACE HEAD ASSEMBLY

AUDIO
HEAD

AUDIO
ERASE
HEAD

FE HEAD

FULL
ERASE
HEAD

CL287
A-PB/REC 4
A-COM 3
AE-H 1
AE-H/FE-H 2

CL504
4 A-PB/REC
3 A-COM
1 AE-H
2 AE-H/FE-H

CL501
2 FE-H
1 FE-H-GND

+5V

Q401

Q402

BIAS
OSC

Q406

Q403 (SWITCHING)

Q405
(PB=ON)

5
6

1
2

+5V

PB-ON

EQ
AMP

SP/LP-ON

AUTO
BIAS

R

REC
AMP

IN1

ALC
DET

ALC

P

LINE
AMP

REC-ON

DECODER

MUTE

SERIAL

12

11

TUNER IN2

INV

98

7

3

100

ATT

AUDIO HD-SW
CONTROL

16

68 69

71

A-MUTE-H
IIC-BUS SDA
IIC-BUS SCL

TO SERVO/SYSTEM
CONTROL BLOCK

1-9-15 1-9-16 HE473BLA

Hi-Fi Audio Block Diagram

" " = SMD

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.)

TEST POINT INFORMATION

: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.

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

JACK CBA

A-IN1(R)
A-IN1(L)
A-OUT1(R)
A-OUT1(L)

A-IN2(R)
A-IN2(L)
A-OUT2(R)
A-OUT2(L)

JK101

2
6
1
3

JK102

2
6
1
3

CL101

10

12

CL102

11

Comparison Chart of
Models & Marks

Model Mark

VR540/39
VR540/58
VR740/02
VR740/07 G
VR740/16
VR740/39
VR740/58
VR742/16
VR742/39
VR742/58

D
E
F

H

I

J
K
L

M

TO AUDIO BLOCK

A-IN1(R)
A-IN1(L) 8

8
6

A-OUT1(R)
A-OUT1(L) 12

9

A-IN2(R)
A-IN2(L) 8

8
6

A-OUT2(R)
A-OUT2(L) 11

10

6

9

6

CL151

CL152

N-A-REC
N-A-PB

67
65

52
56
54
50
60

2
6

10

8
4

78
80

(Hi-Fi AUDIO SIGNAL PROCESS)

IC451

SW

SW

ALC

R-CH
INSEL

ALC

62

70

61 71

L-CH
INSEL

+

48

14

ALC

ALC

47

15

MAIN CBA

CN701 CN1

4

TU-AUDIO(R)
TU-AUDIO(L)

5

R-CH
PNR

L-CH
PNR

4
5

P

R

LIM DEV

LIM DEV

R

P

AFV CBA

IF SIGNAL
PROCESS

OUTPUT
SELECT

SW
NOISE

SW
NOISE

CN1

CN701

SIF
TU-AUDIO

COMP

VCO

LPF

MIX V/I

LPF

VCO

COMP

22
11

VCO MUTE

R-CH
BPF

NOISE
DET

HOLD
PULSE

DO
DET

L-CH
BPF

LIM

ENV
DET

34 33

R

L

MUTE-ON

MUTE-ON

LOGIC

MUTE

73
74

72

76
77
75

37
38

21
53

39

24

26

27

CL509

2

A-OUT1(L)

1

A-OUT1(R)

E,F,G,H,J,K,M

IIC-BUS SDA

IIC-BUS SCL

Q451

Hi-Fi-H-SW

CL253

Hi-Fi-A(R) 9
Hi-Fi-COM 8
Hi-Fi-A(L) 7

SUB JACK CBA

A-MODE

LINE-MUTE

JK751

A-OUT
(L)

A-OUT
(R)

F,G,H,I,J,K,L,M

TU701

22

SIF OUT

21

AUDIO OUT

2

AUDIO IN

FROM/TO SYSTEM
CONTROL BLOCK

CYLINDER
ASSEMBLY

Hi-Fi
AUDIO
(R) HEAD

Hi-Fi
AUDIO
(L) HEAD

1-9-17 1-9-18

HE473BLH

Power Supply Block Diagram

AC001

NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.

HOT CIRCUIT. BE CAREFUL.

F001
T1.6A L 250V

L003

LINE
FILTER

D001 - D004

BRIDGE
RECTIFIER

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE T1.6AL/250V FUSE.

T001

Q051

2

4

Q001

12

Q052

13

Q057

14

Q058

15

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.

MAIN CBA

P-ON+15V
P-ON+32V
P-ON-H

Q053

Q055

Q054

AL+12V/+20.5V
AL+9V
AL+12V
C-POW-SW
AL+5V
TIMER+5V
P-ON+5V
P-DOWN-L
P-OFF-H

HOT

Q003

Q002

7

6

IC001

ERROR
VOLTAGE DET

4

Q004
(SHUNT REGULATOR)

1

23

REG

16

11

17

18

Q059

Q056

COLD

HE473BLP1-9-19 1-9-20

[ VR540/ (39, 58), VR740/ (02, 07, 16, 39, 58), VR742/ (16, 39, 58) ]

Main 1/8 Schematic Diagram Parts Location Guide

Ref No. Positio n Ref No. Position Ref No. Pos i tion

CAPACITORS

C501 B-1 CL501 A-2 R522 E-4
C502 B-1 CL502 F-4 R523 B-4
C506 C-1 CL504 A-3 R524 B-4
C508 E-2 R525 B-3
C510 E-2 D501 E-4 R526 A-2
C511 E-2 D502 A-1 R527 A-2
C512 E-2 D552 E-3 R528 B-1
C513 E-2 D553 E-2 R529 A-1
C514 E-2 R530 E-1
C515 E-2 IC501 C-3 R531 E-1
C516 E-2 IC503 A-4 R533 D-1
C517 E-4 R551 E-3
C518 E-4 L501 A-1 R552 E-3
C519 B-4 L851 D-3 R555 C-1
C520 A-3 R556 C-1
C521 A-2 Q501 E-2 R557 C-1
C522 A-2 Q502 A-2 R558 C-1
C523 A-2 Q503 D-1 R603 C-4
C524 A-2 Q551 E-3 R607 C-4
C526 A-2 Q552 D-3 R611 C-1
C527 B-2 R624 D-4
C529 A-2 R501 B-1 R625 D-4
C530 B-2 R502 B-2 R851 D-3
C531 B-1 R503 C-2 R852 D-3
C532 A-3 R504 B-1 R853 D-4
C533 A-3 R505 B-1
C535 E-1 R506 C-1 SW506 D-1
C563 E-4 R508 D-2
C564 A-2 R509 D-1 VR501 B-1
C851 E-3 R510 C-4
C852 E-3 E511 E-2 X501 D-2
C853 D-3 R513 E-2 X502 D-2
C854 E-3 R514 E-2
C855 D-3 R516 D-2 PS503 E-1
C856 D-4 R517 D-3 RS501 B-2
C858 D-4 R518 F-3
C859 D-4 R520 E-4 TP501 A-2
C862 D-3 R521 E-4 TP502 C-1

CONNECTORS

DIODES

ICS

COIL S

TRANSISTORS

RESISTORS

RESISTORS

SWITCHES

VARIABLE RESISTORS

CRYSTAL OSCILLATORS

MISCELLANEOUS

TEST PO I NTS

1-10-31

Main 1/8 Schematic Diagram

IC50 1 KEY V OLTAGE CHART

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

(D,E) (F,G,H,I,J,K,L)

0.00 ~ 0.51V POWER STOP/EJECT STOP/EJECT

0.51 ~ 0.92V CH DOWN REW REW

0.92 ~ 1.27V CH UP PLAY PLAY

1.27 ~ 1.61V ------------------- F F FF

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

1.98 ~ 2.39V REC/OTR ------------------- PAUSE

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

2.90 ~ 3.60V S-INH ------------------- -------------------

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

4.30 ~ 5.00V KEY OFF KEY OFF KEY OFF

Comp arison Ch a rt of
Model s a nd M a rks

MODEL MARK

VR540/39 D
VR540/58 E
VR740/02 F
VR740/07 G
VR740/16 H
VR740/39 I
VR740/58 J
VR742/16 K
VR742/39 L
VR742/58 M

“ “ = SMD

MODE: SP/REC

THE SAME VOLTAGE FOR
BOTH PLAY & REC MODES.

2

1

5.0

3

5.0

~

(2.5)

INDICA TES THA T THE VOLTAGE
IS NOT CONSISTENT HERE.

PLAY MODE
REC MODE

1-10-32

1-10-33

HE473SCM1

Main 2/8 & Sensor Schematic Diagram

Comp arison Ch a rt of
Model s a nd M a rks

MODEL MARK

VR540/39 D
VR540/58 E
VR740/02 F
VR740/07 G
VR740/16 H
VR740/39 I
VR740/58 J
VR742/16 K
VR742/39 L
VR742/58 M

“ “ = SMD

MODE: SP/REC

THE SAME VOLTAGE FOR
BOTH PLA Y & REC MODES .

2

1

5.0

3

5.0

~

(2.5)

INDICA TES THA T THE VOLTAGE
IS NOT CONSISTENT HERE.

PLAY MODE
REC MODE

1-10-34

1-10-35

HE473SCM2