Philips VR150 Service Manual

Video Cassette Recorder

Service

VR150

/02/07/39

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 22320

OPERATING CONTROLS AND FUNCTIONS

[ VR150/ (02, 07) ]

REC STANDBY/ON

1 2 3

4 5 6

7 8 9

REW FWD

MUTE SYSTEM

0

PLAYSTATUS/EXIT CLEAR

MENU

STOP

TV-PROG.TV-VOL

STILL

PP

STANDBY/ON PROGRAMME RECORD STOP/EJECT REW. PLAY FWD.

TV

AERIAL

RF OUT

-

The remote control

Buttons for VCR feature only

To record the TV channel selected at this

REC

moment.

STANDBY/ON

function.

0..9

Press to select channels at VCR.

+

P–P

playback, press to adjust the tracking.

STATUS/EXIT

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

SYSTEM

To switch off or on, interrupt menu

To select the programme number. During

To access or remove the VCR’s on-

To delete last entry. To clear a programmed

To stop the tape and play back a picture

Doesn’t work on this model. (VR150/02,07)

FWD

fast forward the tape 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

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

PLAY

menu of VCR.

STOP

menu of VCR.

MUTE

restore the volume.

TV-VOL

TV-PROG.

number on the TV.

When tape playback is stopped, press to

-

When tape playback is stopped, press to

-

To play back a tape, select an item in the

To stop the tape, select an item in the

-

Buttons with TV feature

To eliminate the TV’s sound. Press again to

+

+

TV-VOL

TV-PROG.

–

To adjust the TV’s volume.

–

To select a programme

To change Video (colour) system. (VR150/58)

To call up main menu of VCR.

MENU

You can use this remote control to operate some functions of Philips TVs.

Front of your VCR

STANDBY/ON

function.

programme number. During playback, press to adjust the
tracking.

RECORD

moment.

FWD.

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

To switch off or on, interrupt menu

PROGRAMME-PROGRAMME+

To select the

To record the TV channel selected at this

When tape playback is stopped, press to fast

1-5-3 HG270IB

REW.

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

TV

To connect the TV.

AERIAL

RF OUT

To connect the aerial cable.

To connect the TV.

[ VR150/39 ]

The remote control

REC

moment.

STANDBY/ON

function.

0..9

playback, press to adjust the tracking.

STATUS/EXIT

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

SYSTEM

MENU

FWD

to fast forward the tape 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.

REC STANDBY/ON

1 2 3

4 5 6

7 8 9

0

PP

PLAYSTATUS/EXIT CLEAR

REW FWD

MENU

STOP

TV-PROG.TV-VOL

STILL

MUTE SYSTEM

Buttons for VCR feature only

To record the TV channel selected at this

To switch off or on, interrupt menu

Press to select channels at VCR.

+

To select the programme number. During

P–P

To access or remove the VCR’s on-

To delete last entry. To clear a programmed

To stop the tape and play back a picture

To change video (colour) system.

To call up main menu of VCR.

-

When tape playback is stopped, press

STANDBY/ON PROGRAMME RECORD STOP/EJECT REW. PLAY FWD.

AV1 (TV)

REW

AV2 (DECODER)

-

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

-

PLAY

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

STOP

To stop the tape, select an item in the

-

menu of VCR.

Buttons with TV feature

MUTE

restore the volume.

TV-VOL

volume.

TV-PROG.

number on the TV.

To eliminate the TV’s sound. Press again to

+

+

TV-VOL

TV-PROG.

–

To adjust the TV’s

–

To select a programme

AERIAL

RF OUT

You can use this remote control to operate some functions of Philips TVs.

Front of your VCR

STANDBY/ON

function.

programme number. During playback, press to adjust
the tracking.

RECORD

moment.

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 stays on the screen.

To switch off or on, interrupt menu

PROGRAMME-PROGRAMME+

To select the

To record the TV channel selected at this

REW.

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

)

AV2(DECODER

decoder, video recorder, etc.

AV1(TV

AERIAL

RF OUT

To connect a satellite receiver,

)

To connect the TV.

To connect the aerial cable.

To connect the TV.

1-5-4 HG270IB

SIGNAL NAME ABBREVIATIONS

[ VR150/ (02, 07, 39) ]

Signal Name Function

16P SCART 16Pin Control Signal

8POUT-1

SCART 1 8Pin Output Control
Signal

Signal Name Function

CLKSEL Clock Select (GND)

COLOR-IN

SECAM or MESECAM Chroma
Video Input Signal at Super
Impose

A-COM Audio Head Common

A-IN Audio Signal Input

A-MUTE Audio Mute Control 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+44V

AL+5V

AL-5V

AMPC CTL AMP Connected Terminal

AMPVcc AMPVcc

AMPVREF IN V-Ref for CTL AMP

AMPVREF OUT V-Ref for CTL AMP

AUDIO-SW-1

AUDIO-SW-2

AVc c

C-CONT Capstan Motor Control Signal

C-F/R

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 +9V with AC Plug
Connected

Always +5V with AC Plug
Connected

Always -5V with AC Plug
Connected

Audio IN/OUT Control Signal

Audio IN/OUT Control Signal

A/D Converter Power Input/
Standard Voltage Input

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

CTL (+)

CTL (-)

CTLAMP out 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

FF/REW-L

FSC-IN
[4.43MHz]

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

LD-SW

LM-FWD/REV Loading Motor Control Signal

LP LP

MOD-A Modulator Audio Output 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

CTL Frequency Characteristics
Switching Signal (FF/REW=”L”)

4.43MHz Clock Input

I2C BUS Control Clock

2

C BUS Control Data

I

SCART 8Pin Output Control
Signal

Deck Mode Position Detector
Signal

C-FG

C-ROTA

C-SYNC Composite Synchronized Pulse

Capstan Motor Rotation
Detection Pulse

Color Phase Rotary Changeover
SIgnal

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

1-6-3 HG270SNA

Signal Name Function

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

PB-H-OUT Playback Signal Output at High

Power Voltage Down Detector
Signal

Signal Name Function

Vss Vss(GND)

X-IN Main Clock Input

X-OUT Main Clock Input

XC-IN Sub Clock

XC-OUT Sub Clock

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

RF-SW Video Head Switching Pulse

RGB­THROUGH

SC2-IN

SECAM-C-IN SECAM Chroma Signal Input

SECAM-FM­OUT

SECAM-H SECAM Mode at High

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

ST-S

T-REEL Take Up Reel Rotation Signal

TIMER+5V +5V at Timer

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

Tape Start Position Detector
Signal

Special Playback = “H” in
SECAM Mode

Video Envelope Comparator
Signal

1-6-4 HG270SNA

ELECTRICAL ADJUSTMENT INSTRUCTIONS

[ VR150/ (02, 07, 39) ]

General Note: "CBA" is an abbreviation for
"Circuit Board Assembly."

NOTE:

1.Electrical adjustments are required after replacing
circuit components and certain mechanical parts.
It is important to do these adjustments only after
all repairs and replacements have been com­pleted. Also, do not attempt these adjustments
unless the proper equipment is available.

2.To perform these alignment / confirmation proce­dures, make sure that the tracking control is set in
the center position: Press either "L5??" or "K" button
on the remote control unit first, then the "PLAY"
button (Front Panel only).

Test Equipment Required

1.Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50V/Div.,
F-Range: DC~AC-20MHz

2.Alignment Tape (9965 000 14514)

Head Switching Position Adjustment

Purpose:

To determine the Head Switching position during
playback.

Symptom of Misadjustment:

May cause Head Switching noise or vertical jitter
in the picture.

Test point Adj.Point Mode Input

J23(V-OUT)

TP502(RF-SW)

GND

Tape

9965 000 14514 Oscilloscope

Connections of Measurement Equipment

Main CBA

VR501

(Switching Point)

(MAIN CBA)

Measurement

Equipment

J23

GND

TP502

PLAY

(SP)

6.5H±1H

(412.7µs±60µs)

Oscilloscope

-----

Spec.

CH1 CH2

Trig. (+)

Figure 1

EXT. Syncronize Trigger Point

CH1

CH2

Reference Notes:
Playback the Alignment tape and adjust VR501 so that
the V-sync front edge of the CH1 video output wave­form is at the 6.5H(412.7µs) delayed position from the
rising edge of the CH2 head switching pulse wave­form.

1.0H

6.5H±1H (412.7µs±60µs)

Switching Pulse

0.5H
V-Sync

1-8-3 HG270EA

Adjustment Points and Test Points

Main CBA Top View

TUNER
BLOCK

J23
V-OUT

Hi-Fi
BLOCK

AUDIO
BLOCK

VIDEO
BLOCK

POWER
SUPPLY
BLOCK

SYSCON/TIMER

TP502
RF-SW

VR501

SW-POINT

SERVO BLOCK

TEST POINT INFORMATION

: Indicates a test point with a jumper wire across a hole in the PCB.

TEST POINTS NOT USED IN ELECTRICAL ADJUSTMENTS

Test Point

TP301

TP502

TP501

TP507

Mechanical Alignment Procedures

Mechanical Alignment Procedures

Mechanical Alignment Procedures

Preparation for Servicing

Used in: Page No.

Main CBA

2-3-8, 2-3-9

2-3-8, 2-3-9

2-3-8

1-4-1

POWER
CTL
BLOCK

TP301
C-PB

TP507
S-INH

TP501

CTL

Audio In/Out,Video In/Out

Tuner Unit

Antenna In
Antenna Out

1-8-4 HG270EA

[ VR150/ (02, 07, 39) ]

BLOCK DIAGRAMS

Servo/System Control Block Diagram

P

O

Q

Model Mark

VR150/39

VR150/02

Comparison Chart of

VR150/07

Models & Marks

LED DISPLAY

FP562

SDA

SDA

TU701(TUNER UNIT)

3

12

SCL

5

SCL

IC503 (MEMORY)

11

SDA

5

SCL

6

TO

A-MUTE-H

IIC-BUS SCL

IIC-BUS SDA

AUDIO BLOCK

AUDIO-SW-1

AUDIO-SW-2

RF-SW

D-REC-H

IIC-BUS SCL

IIC-BUS SDA

FROM/TO

C-ROTA

D-V-SYNC

VIDEO BLOCK

V-ENV

C-SYNC

TRICK-H

SECAM-H

KEY

SWITCH

TP507

SENS-INH

KEY

SWITCH

8

7

KEY- 2

KEY- 1REMOCON-IN

CTL(+)

CTL(-)

REMOTE

RS501

14

SENSOR

S-LED

D502

LD-SW9

94

957610480

AL+5V

IC501

(SERVO/SYSTEM CONTROL)

AL+5V

IC561

(LED DISPLAY)

ST-S

T-REEL

END-S

232221

D1D2D3

DRV-DATA

DRV-STB

DRV-CLK

2

1

28

686970

DRV-STB

DRV-CLK

DRV-DATA

RESET

34

Q501

RESET

TIMER+5V

2011161413e12

17

a

bcd

D4

7

j

f

18

33

RF-SW

D-REC-H

C-CONT

C-F/R

78

13

15

C-ROTA

D-V-SYNC

C-FG

87

P-ON+5V

6

58

65

V-ENV

C-SYNC

TRICK-H

Q

AL+12V/+20.5V

61

SECAM-H

P-ON-H

P-DOWN-L

67

86

P-ON-H

P-DOWN-L

FROM/TO

POWER

SUPPLY

BLOCK

AL+5V

REC-SAF-SW

PG-DELAY

2

31

AL+5V

VR501

SW-POINT

83

A-MUTE-H

Q

SW506

REC-SAFETY

CN502

29

30

AUDIO-SW-1

AUDIO-SW-2

P-ON+15V

AL+12V

AL+12V(2)

12 P-ON+15V

11

10 GND

71

72

IIC-BUS SCL

IIC-BUS SDA

LM-FWD/REV

D-CONT77

D-PFG

81

90

D-PFG8D-CONT7LM-FWD/REV

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

6

9

LD-SW

SW507

: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

MAIN CBA

" " = SMD

ST-S

Q504

SENSOR CBA

Q505

END-S

T-REEL

Q503

TP506

END-S

SENSOR CBA

(DECK ASSEMBLY)

CN504

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

HG270BLS

Video Block Diagram

P

Q

O

Model Mark

VR150/39

VR150/02

Comparison Chart of

VR150/07

Models & Marks

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

IIC-BUS SDA

IIC-BUS SCL

FROM

SERVO/SYSTEM

CONTROL BLOCK

50

Q

55

CYLINDER ASSEMBLY

(DECK ASSEMBLY)

123

V(R)

CN253

969593

7978

69684643

SERIAL

DECORDER

Y. DELAY

65

VIDEO (L)

VIDEO (R)

HEAD

V(L)

V-COM

SP

HEAD

AMP

P

R

LUMINANCE

SIGNAL

PROCESS

HEAD

94

AGC

BYPASS

REC FM

+

Y

CCD 1H DELAY

CHARA.

INS.

WF1

AGC

C

1/2

D-REC-H

TP502

RF-SW

80

D-REC-H

RPRP

CHROMINANCE

SIGNAL

PROCESS

Q

FROM/TO SERVO/SYSTEM

CONTROL BLOCK

V-ENV

RF-SW

C-SYNC

C-ROTA

Y/C

MIX

FBC

TRICK-H

D-V-SYNC

67

84

62

70

V-ENV

C-SYNC

D-V-SYNC

C-ROTA/RF-SW

PR

SECAM-H

IC370 (PAL/SECAM DECTECTOR)

28

PB-H OUT

21

252928 44

AGC VXO

58 59

PAL/SECAM

DETECTOR

1

171418216

29

WF2

C-PB

TP301

X301

4.433619MHz

OSD

IC501 (OSD)

: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

MAIN CBA

" " = SMD

COLOR

-IN

CHARACTER

MIX

52

IC301

(Y/C SIGNAL PROCESS)

BUFFER

Q351

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

CN151

CN152

1

V-OUT1

V-I N1

33

1

CN101

CN102

Q101

Q102

BUFFER

JK101

JK102

19

20

V-OUT1

V-IN1

1

V-OUT2

V-I N2 3

3

1

BUFFER

19

20

V-OUT2

V-IN2

Q

HG270BLV

Audio Block Diagram

Mode : SP/REC

PB/EE

PB-AUDIO SIGNAL REC-AUDIO SIGNAL

MAIN CBA

O,P

J981

IC151 (SWITCHING)

152

PB/EE

PB/EE

3

4

IN2

1214151110

IN1

IN1

PB/EE

TUNER

13

TO SERVO/SYSTEM

CONTROL BLOCK

AUDIO-SW-1

AUDIO-SW-2

9

SW

CTL

ALC

12

DET

INV

LINE

R

11

MUTE

AMP

ALC

ATT

TO SERVO/SYSTEM

CONTROL BLOCK

A-MUTE-H

IIC-BUS SCL

IIC-BUS SDA

71

68 69

SERIAL

REC-ON

P

REC

AMP

DECODER

16

AUDIO HD-SW

CONTROL

2

21

AUDIO IN

AUDIO OUT

TU701(TUNER UNIT)

: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

" " = SMD

CN151

7

A-IN1

7

CN101

5

A-OUT1

5

EQ

PB-ON

5

98

AMP

6

7

SP/LP-ON

+5V

Q401

CN504

BUFFER

Q151

Q

CN152

8

A-IN2

8

CN102

6

A-OUT2

6

Q152

BUFFER

TUNER

IC301 (AUDIO SIGNAL PROCESS)

IN1

IN2

151317

BIAS

Q402

3 A-PB/REC

4 A-COM

6 AE-H

100

3

AUTO

1

OSC

5 AE-H/FE-H

BIAS

2

Q406

+5V

Q403 (SWITCHING)

Q405

(PB=ON)

CN501

2 FE-H

1 FE-H-GND

JACK CBA

JK101

261

A-IN1(R)

A-IN1(L)

3

A-OUT1(R)

A-OUT1(L)

JK102

261

A-IN2(R)

A-IN2(L)

3

A-OUT2(R)

A-OUT2(L)

P

Q

O

FE HEAD

Model Mark

VR150/39

VR150/02

Q

Comparison Chart of

VR150/07

Models & Marks

ACE HEAD ASSEMBLY

AUDI O

HEAD

(DECK ASSEMBLY)

AUDI O

ERASE

HEAD

1-9-8

FULL

ERASE

HEAD

HG270BLA

Power Supply Block Diagram

P-ON+44V

P-ON+15V12P-ON-H

AL+12V/+20.5V

AL+12V

AL+5V

TIMER+5V

P-ON+5V

P-DOWN-L

Q

AL-5V

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

Q052

131514

T001

2

CAUTION

FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,

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

4

Q055

Q001

Q054

Q059

16

Q056

Q

SHUNT

REGULATOR

Q004

11

17

18

1

4

IC001

ERROR

6

7

VOLTAGE DET

COLD

23

HOT CIRCUIT. BE CAREFUL.

NOTE :

The voltage for parts in hot circuit is measured using

hot GND as a common terminal.

P

O

Q

Model Mark

VR150/39

VR150/02

Comparison Chart of

VR150/07

Models & Marks

BRIDGE

RECTIFIER

D001 - D004

LINE

FILTER

F001 L003

T1.6A L 250V

AC001

1-9-9

Q002

Q003

HOT

HG270BLP

[ VR150/ (02, 07, 39) ]

Main 1/6 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
C508 E-2 CN501 A-2 R524 B-4
C510 E-2 CN502 F-4 R525 B-3
C511 E-2 CN504 A-2 R526 A-2
C512 E-2 R527 A-2
C513 E-2 D501 E-4 R528 B-1
C514 E-2 D502 A-1 R529 A-1
C515E-2D553E-2R533D-1
C516 E-2 R551 E-3
C517 E-4 IC501 C-3 R552 E-3
C518 E-4 IC503 A-4 R553 F-2
C519 B-4 R555 C-1
C520 A-3 L501 A-1 R556 C-1
C521 A-2 L851 D-3 R557 C-1
C522 A-2 R558 C-1
C523 A-2Q501 E-2R613D-1
C524 A-2Q503D-1R614D-1
C526 A-2Q551 E-3R615C-1
C527 B-2Q552 E-3R617C-1
C528 A-2 R618 D-1
C530 B-2 R501 B-1 R622 A-3
C531 B-1R502B-2R851D-3
C532 A-3R503C-2R852D-3
C533 A-3R504B-1R853D-4
C535 E-1 R505 B-1
C563 E-4 R506 C-1 SW506 D-1
C564 E-4 R509 D-1
C567 F-4 R510 C-4 VR501 B-1
C851 E-3 E511 E-2
C852 E-3 R513 E-2 X501 D-2
C853 D-3 R514 E-2 X502 D-2
C854 E-3 R516 D-2
C855 D-3 R517 D-3 RS501 B-2
C856 D-4 R518 F-3
C858 E-4 R520 E-4 TP501 A-2
C859 D-4 R521 E-4 TP502 C-1

CAPACITORS

CONNECTORS

DIODES

ICS

COILS

TRANSISTORS

RESISTORS

RESISTORS

SWITCH

VARIABLE RESISTOR

CRYSTAL OSCILLATORS

MISCELLANEOUS

TEST POINTS

1-10-31

Main 1/6 Schematic Diagram

0.00 ~ 0.51V POWE R ST OP/E JE CT

0.51 ~ 0. 92V CH DOWN REW

0.92 ~ 1.27V CH UP PLA Y

1.27 ~ 1 .61V ---------------- FF

1.61 ~ 1 .98V ---------------- --------------

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

2.39 ~ 2 .90V ---------------- --------------

2.90 ~ 3.60V SENS -INH --------------

3.60 ~ 4 .30V ---------------- --------------

4.30 ~ 5.00V KEY OFF KEY OFF

Pin No.
Voltage

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

Comparison Chart of
Models and Marks

MODEL MARK

VR150/02 O
VR150/07 P
VR150/39 Q

“ “ = 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.

IC501 KEY VOLTAGE CHART

PLAY MODE

REC MODE

1-10-32

1-10-33

HG270SCM1

Main 2/6 & 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

VR150/02 O
VR150/07 P
VR150/39 Q

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

HG270SCM2

MAIN 2/6 Schematic Diagram Parts Location Guide

Ref No. Position Ref No. Position

CAPACITORS RESISTORS
C538 K-4 R541 K-4
C540 J-3 R542 J-2
C561 J-3 R543 J-2
C562 G-3 R544 K-2
C701 H-1 R545 K-2
C702 I-2 R546 K-2
C704 G-2 R547 J-2
C706 I-1 R548 K-2
C708 H-1 R549 K-2
C709 I-1 R566 J-4
C710 H-1 R701 G-2
C715 H-1 R702 G-1

DIODE

D701 G-2 R706 G-1

IC561 J-4 SW501 J-2

COILS
L561 G-3 SW503 K-2
L562 G-3 SW505 K-2
L701 I-2 SW507 J-3
L703 H-2 SW509 J-2
L704 H-1 SW510 K-2

RESISTORS
R534 J-3 SW512 K-2
R535 J-3
R536 J-3 FP562 H-4
R537 J-3 TU701 H-2
R538 K-3
R539 K-3 TP506 K-4
R540 K-4 TP507 K-2

R703 G-1

SWITCHESIC

SW502 J-2

SW511 K-2

MISCELLANEOUS

TEST POINTS

1-10-36

MAIN 3/6 Schematic Diagram Parts Location Guide

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

CAPACITORS CAPACITORS COILS
C251 N-3 C341 O-4 L403 N-1 R351 N-4
C252 N-3 C342 O-4 R352 N-4
C253 N-3 C343 O-4 Q351 N-4 R355 N-4
C254 N-3 C345 Q-3 Q352 N-3 R357 M-4
C302 P-1 C346 P-4 Q401 N-2 R358 N-4
C303 P-1 C347 O-4 Q402 N-1 R360 M-4
C304 P-2 C351 N-4 Q403 N-1 R361 N-3
C305 P-1 C352 M-4 Q405 M-1 R401 N-2
C307 P-2 C401 N-2 Q406 N-1 R402 N-2
C308 P-1 C402 N-1 R403 N-2
C309 P-1 C403 M-2 R251 N-3 R404 M-2
C310 Q-2 C404 M-1 R252 N-3 R407 M-1
C311 Q-2 C411 O-1 R301 P-1 R408 N-2
C312 Q-2 C412 O-2 R302 P-1 R409 N-2
C313 Q-2 C414 O-1 R303 Q-2 R411 N-2
C314 Q-3 C415 O-1 R304 Q-2 R412 O-2
C315 Q-3 C416 O-2 R305 Q-2 R413 O-2
C316 Q-3 C417 O-1 R307 P-4 R414 O-1
C317 Q-3 C418 O-1 R308 P-4 R415 O-1
C318 Q-3 C419 O-1 R309 P-4 R416 O-1
C319 Q-3 C421 O-2 R310 O-4 R417 O-1
C320 Q-3 C422 O-1 R311 O-4 R418 N-1
C321 Q-3 C423 O-1 R312 N-4 R421 O-1
C322 Q-3 C424 O-2 R314 N-4 R422 O-1
C323 Q-3 C425 O-1 R315 O-4 R423 O-1
C324 Q-3 C426 P-1 R316 O-4 R424 O-1
C325 Q-4 C427 O-1 R317 O-4 R425 O-1
C326 Q-4 C428 O-1 R318 O-4 R426 O-1
C327 P-4 C429 P-1 R319 N-4 R427 P-1
C330 P-4 C430 P-2 R320 O-4 R728 P-1
C332 P-4 R321 Q-4 R429 O-1
C333 P-4 CN253 M-3 R323 Q-4
C334 P-4 R324 N-3 X301 P-2
C335 P-4 D301 N-4 R325 Q-3
C336 O-4 R326 Q-3 TP301 M-3
C337 O-4 IC301 N-2 R330 Q-3
C338 O-4 R331 Q-2
C339 O-4 L251 N-3 R332 P-4
C340 O-4 L301 O-4 R334 Q-3

CONNECTOR

DIODE

IC

COILS

TRANSISTORS

RESISTORS

RESISTORS

CRYSTAL OSCILLATOR

TEST POINT

1-10-37

Main 3/6 Schematic Diagram

Comparison Chart of
Models and Marks

MODEL MARK

VR150/02 O
VR150/07 P
VR150/39 Q

“ “ = 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

1-10-38

1-10-39

HG270SCM3

Main 4/6 & Jack Schematic Diagrams

Comparison Chart of
Models and Marks

MODEL MARK

VR150/02 O
VR150/07 P
VR150/39 Q

“ “ = 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

1-10-40

1-10-41

HG270SCM4

MAIN 4/6 Schematic Diagram Parts Location Guide

Ref No. Position Ref No. Position

CAPACITORS
C151 S-3 IC151 T-3
C152 U-2
C154 T-2 Q151 T-3
C155 T-3 Q152 U-2
C156 T-2 Q153 U-2
C157 T-3
C158 U-3 R151 T-3
C159 T-2 R152 T-3

CONNECTORS
CN151 U-3 R154 T-3
CN152 U-2 R155 T-3

DIODES
D153 U-3
D155 U-2 J23 S-3

R153 T-2

R158 U-2

IC

TRANSISTOR

RESISTORS

TEST POINT

JACK Schematic Diagram Parts Location Guide

Ref No. Position Ref No. Position

CAPACITORS
C102 W-4 Q101 V-3
C104 W-3 Q102 V-1
C105 W-3
C107 W-2 R101 W-4
C108 W-2 R106 W-3
C109 V-2 R108 W-3
C112 W-2 R109 W-2
C113 W-2 R110 W-2
C115 V-4 R115 W-2
C116 W-3 R116 W-2
C117 W-1 R117 W-2

CONNECTORS
CN101 V-3 R119 W-1
CN102 V-2 R120 V-4

DIODES
D101 W-2 R125 V-1
D102 W-1 R126 V-1
D103 W-1 R127 W-1
D104 W-1 R128 V-3
D105 W-2
D106 W-3 JK101 X-4

COILS

L101 X-2
L102 X-1

TRANSISTORS

RESISTORS

R118 W-1

R123 V-3

MISCELLANEOUS

JK102 X-2

1-10-42

MAIN 5/6 Schematic Diagram Parts Location Guide

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

DIODES RESISTORSCAPACITORS
C002 Y-3 D023 AA-1 R011 Y-1
C003 Y-2 D051 BB-3 R012 Y-1
C004 Z-3 D053 BB-2 R013 Z-1
C005 Z-3 D055 BB-2 R014 Y-1
C006 Z-2 D056 AA-2 R015 Z-1
C007 Z-2 D057 BB-2 R016 Z-1
C008 Y-1 D058 CC-2 R017 AA-3
C010 Y-1 R 021 AA-1
C011 Y-1 IC001 Z-1 R022 AA-1
C012 AA-3 R023 AA-1
C017 AA-2 J902 AA-1 R024 AA-1
C018 AA-2 L001 Y-3 R025 AA-1
C020 AA-2 L002 Y-3 R026 AA-2
C021 AA-2 L003 Y-3 R027 Z-1
C022 AA-2 L009 AA-2 R028 Z-2
C025 AA-1 L010 AA-2 R029 AA-1
C026 BB-2 L012 BB-2 R030 AA-1
C053 BB-1 R031 AA-1
C056 BB-1 Q001 Z-2 R03 2 AA-1
C057 BB-1 Q002 Z-2 R053 CC-2

DIODES
D001 Y-3 Q004 AA-1 R058 BB-2
D002 Z-3 Q051 BB-3 R05 9 BB-2
D003 Y-3 Q052 BB-3 R060 BB-1
D004 Z-3 Q054 CC-2 R061 BB-1
D005 Z-2 Q055 BB-2 R06 2 BB-2
D006 Z-2 Q056 BB-1 R06 3 BB-2
D007 Z-1 Q059 BB-1 R06 4 BB-2
D008 Z-1 R065 BB-2
D009 Z-1 R001 Y-2 R071 CC-3
D011 AA-3 R002 Z-3 R073 BB-1
D013 AA-2 R003 Z-3
D014 AA-2 R004 Z-3 AC001 Y-3
D015 AA-2 R005 Z-2 F001 Y-3
D016 AA-2 R006 Z-2 SA001 Y-3
D018 Z-2 R007 Z-2 T001 Z-3
D019 AA-1 R008 Y-2
D021 Z-1 R009 Z-1

Q003 Y-1 R 054 BB-2

IC

COILS

TRANSISTORS

RESISTORS

MISCELLANEOUS

1-10-43

Main 5/6 Schematic Diagram

Comparison Chart of
Models and Marks

MODEL MARK

VR150/02 O
VR150/07 P
VR150/39 Q

CAUTION !

For continued protection against fire hazard,
replace only with the same type fuse.

NOTE :

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

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.

MODE: SP/REC

THE SAME VOLTAGE FOR

BOTH PLAY & REC MODES.

“ “ = SMD

2

1

5.0

3

5.0

~

(2.5)

INDICATES THAT THE VOLTAGE

IS NOT CONSISTENT HERE.

PLAY MODE

REC MODE

1-10-44

1-10-45 HG270SCM5