Service Manual

6301B

Personal Monitor

Self-Powered

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION:

TO PREVENT ELECTRIC SHOCK, MATCH

WIDE BLADE OF PLUG TO WIDE SLOT,

FULLY INSERT.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

ATTENTION:

POUR ÉVITER LES CHOCS ÉLECTRIQUES,

INTRODUIRE LA LAME LA PLUS LARGE DE

L A F I C H E D A N S L A B O R N E C O R R E -

SPONDANTE DE LA PRISE ET POUSSER

JUSQU' AU FOND.

The lightening flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated

“dangerous voltage” within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

“WARNING”

“TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,

DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS-

TURE.”

SAFETY INSTRUCTIONS

1.

2.

3.

4.

5.

6.

Read instructions - All the safety and operating instructions should be read before the appliance is operated.

Retain instructions - The safety and operating instructions should be retained for future reference.

Heed warnings - All warnings on the appliance and in the operating instructions should be adhered to.

Follow instructions - All operating and use instructions should be followed.

Water and Moisture - The appliance should not be used near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, and the like.

Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufacturer.

7.

8.

An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn.

Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.

Ventilation - The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or, placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

9.

10.

11.

12.

13.

14.

15.

16.

17.

Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.

Power Sources - The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.

Grounding or Polarization - The precautions that should be taken so that the grounding or polarization means of an appliance is not defeated.

Power Cord Protection - Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the appliance.

Cleaning - The appliance should be cleaned only as recommended by the manufacturer.

Nonuse Periods - The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.

Object and Liquid Entry - Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

Damage requiring Service - The appliance should be serviced by qualified service personnel when:

A.

The power supply cord or the plug has been damaged;

B.

or

Objects have fallen, or liquid has been spilled into the

C.

D.

appliance; or

The appliance has been exposed to rain; or

The appliance does not appear to operate normally or exhibits a marked changed in performance; or

E.

The appliance has been dropped, or the enclosure damaged.

Servicing - The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.

6301B/BX/BE

TABLE OF CONTENTS

1. SPECIFICATIONS ........................................................................................ 3

2. OVERALL EXPLODED VIEW .................................................................. 4

3. PCB ASSY AND PARTS LIST ................................................................. 6

4. PATTERN DRAWING .................................................................................. 8

5. CIRCUIT DIAGRAMS .................................................................................. 9

NOTES

• Adjustment procedures, parts list, pattern drawing and circuit diagrams are given in this manual to assist the service technician in maintaining the 6301B.

• For your information, this service manual complies to the 6301B with the followings are the serial number of 6301B.

USA/CND

EUR

UK

JPN

: 0260001 and onwards

: 0660001 and onwards

: 0760001 and onwards

: 1060001 and onwards

1. SPECIFICATIONS

SPEAKER ( Internal )

Type

Impedance

Efficiency

AMPLIFIER

Normal Input Level

Output

Frequency Response

Distortion

Residual Noise

Input Sensitivity

Input Impedance

GENERAL

Dimensions

Weight

Power supply

JPN

USA/CND

EUR/UK

Power consumption

10cm Full Range Single Cone

4

Ω

84 dB/W (1m)

-10dBV more than 10Wrms ( 8

Ω load )

20 ~ 50 kHz +0dB-3dB

0.05 % or less ( at 1W output )

-70dBV (0.3mV)

Unbalanced type : -6dBV (0.5Vrms)

Balanced type : +4dBm (1.2Vrms)

Unbalanced type : Higher than 20k

Ω

Balanced type : Higher than 10k

Ω

120 (W)

×

188 (H)

×

118 (D) mm

3.0 kg

100 VAC, 50/60 Hz

120 VAC, 60 Hz

230 VAC, 50/60 Hz

33 W

3

3

4

BTT

4x12 Bzn

5

1

2

BTT

4x12 Bzn

PTT

4x8 Bzn

7

PTT

4x8 Bzn

6

15

BTT

4x12 Bzn

BTT

4x12 Bzn

PTP WH

3x10 Bzn

17

18

9

13

12

8

10

11

14

7 15

21

PTT

3x6 Czn

22

PTT

3x6 Czn

19

P 4x10 Bzn

BTT

4x12 Bzn

20

16

PTT

3x8 Ni

15

23

15

24

9

10

11

12

13

14

Ref. No.

1

2

3

6

7

8

4

5

15

16

17

18

19

20

21

22

23

24

Part No.

Description

8278001000 Speaker, 10F05AV

8216034000 Packing, Speaker

8220462100 Cover, Speaker, B3/X/E

8226050000 Button, Push, Power, B3/X/E

8226067000 Knob, Pot, B3/X/E

8210020100 Box, Speaker, B3/X/E (192631)

8216213002 Sound Absorbent, B3/X/E

8242041200 Trans, Power, 120V, B3/X/E

8242042001 Trans, Power, 220V/240V, B3/X/E

8242040200 Trans, Power, 100V, B3/X/E

8274209000 PCB Assy, Trans, B3X

8274216000 PCB Assy, PowerAmp, B3/X/E

8220464000 Bracket, PCB, B3/X/E

8239002000 Insulator, IC, B3/X/E

8274210000 PCB Assy, JK2, B3/X/E

8274211000 PCB Assy, LineAmp, B3

8274212000 PCB Assy, LineAmp, B3X

8274213000 PCB Assy, LineAmp, B3E

8216198100 Gasket, Rear, B3/X/E

8220463201 Panel, Rear, B3 (192630)

8220463202 Panel, Rear, B3X/E (192629)

8216196000 Cover, XLR, B3X/E

8245392000 Conn, XLR, B3X/E

8207000209 Bushing, B3/X/E

8276217000 Cord, Power, B3/X/E, CSA

8276215000 Cord, Power, B3/X/E, CND

8276216000 Cord, Power, B3/X/E, EUR

8276879000 Cord, Power, B3/X/E, UK

8276003000 Cord, Power, B3/X/E, JPN

8253014008 SW, Power, B3/X/E

8256075005 Spark-Killer, 0.0047

µ

F

8274214000 PCB Assy, LED, B3/X/E

8274215000 PCB Assy, VR, B3/X/E

6301B/BX/BE

5

6301B/BX/BE

3. PCB ASSY AND PARTS LIST

PCB Assy PowerAmp 8274216000

Ref. No.

C001

Part No.

8232050471

C002 8232098105

C003, 004 8232097227

C005

C006

8232095476

8232026123

C007 8232026104

C008, 009 8232074000

C010 8232026103

C011, 012 8232133478

D001

R001

8234001607

8230004102

R002

R004

R005

R006

8230004563

8230004122

8230004563

8230004153

R007

R008

R010

U001

8230004102

8230004100

8230004222

8234045600

Description

CAP, CER, 50V, 470pF, 5%

CAP, ALU, 50V, 1

µ

F, 20%

CAP, ALU, 35V, 220

µ

F, 20%

CAP, ALU, 16V, 47

µ

F, 20%

CAP, PES, 50V, 0.012

µ

F, 5%

CAP, PES, 50V, 0.1

µ

F, 5%

CAP, CER, 50V, 0.1

µ

F, 20%

CAP, PES, 50V, 0.01

µ

F, 5%

CAP, ALU, 35V, 4700

µ

F, 20%

D, STACK, 2W02G

RES, CARBON, 1/4W, 1K, 5%

RES, CARBON, 1/4W, 56K, 5%

RES, CARBON, 1/4W, 1.2K, 5%

RES, CARBON, 1/4W, 56K, 5%

RES, CARBON, 1/4W, 15K, 5%

RES, CARBON, 1/4W, 1K, 5%

RES, CARBON, 1/4W, 10, 5%

RES, CARBON, 1/4W, 2.2K, 5%

IC, PowerAmp, TDA2050

PCB Assy LineAmp 8274211000

Ref. No.

Part No.

C021, 022 8232095106

C021, 022

C023 8232095106

Description

CAP, ALU, 16V, 10

µ

F, 20%

Jumper

CAP, ALU, 16V, 10

µ

F, 20%

CAP, ALU, 25V, 47

µ

F, 20%

RES, CARBON, 1/4W, 10K, 5%

C024, 025 8232096476

R021 8230004103

R022

R022

R023

R024

R024

R025

R026

R027

8230004103

8230004102

8230004392

8230004103

8230004392

8230004103

8230004392

RES, CARBON, 1/4W, 10K, 5%

RES, CARBON, 1/4W, 1K, 5%

RES, CARBON, 1/4W, 3.9K, 5%

RES, CARBON, 1/4W, 10K, 5%

Jumper

RES, CARBON, 1/4W, 3.9K, 5%

RES, CARBON, 1/4W, 10K, 5%

RES, CARBON, 1/4W, 3.9K, 5%

R028, 029 8230004102

U002 82360212000

RES, CARBON, 1/4W, 1K, 5%

IC, Analog, NJM4560DX

DZ001, 002 8234503959

CN002 8245053003

JK001

JP006, 007

8245103000

D, ZENER, MTZ J 15C

Conn, JACK, 8263, 3P, WHT

Conn, Phone, B/BX/BE

Jumper

6

B BX BE

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

B BX BE

* * *

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

*

PCB Assy JK2 8274210000

Ref. No.

JK002

Part No.

8245103000

Description

Conn, Phone, B/BX/BE

PCB Assy VR 8274215000

Ref. No.

VR001

Part No.

8240212002

Description

POT, 50KA, B/BX/BE

PCB Assy LED 8274214000

Ref. No.

D002

Part No.

8234006400

Description

OPT, LED, RED, GL-3PR8

PCB Assy TRANS 8274209000

Ref. No.

Part No.

R031, 032 8230004512

R034 8230004102

T002

CN002

8242099000

8245053003

Description

RES, CARBON, 1/4W, 5.1K, 5%

RES, CARBON, 1/4W, 1K, 5%

TRANS, LINE, BX

Conn, JACK, 8263, 3P, WHT

B BX BE

* * *

B BX BE

* * *

B BX BE

* * *

B BX BE

*

*

*

*

6301B/BX/BE

7

8

6301B/BX/BE

4. PATTERN DRAWING

D2

TRANS

6301-106

R34

R32

R31

P

W51

N

G S GI/P

VR1W41

G I O

6301-103

W31

R29

U2

R27

ZD2 ZD1

C23 JK1 JP7

R28

VV+ S G

W21

JP6

W12

VV+ S G

W14

G S GI/P

6301-101 PO

C3

C9

C8

C4

C5

R6

R4

U3

R8

R7

C10

C7

C6

O

W13

I G

D1

SPK

W10

TO

R10

C12

C11

6301B

P1

AC POWER IN

6301-104

VR1

50KA

3

2

1

4

3

2

1

W41

S1

Z1

6301-102

JK1

2

4

1

W21

1

2

3

4

T1

6301-101

+VCC1 C3

220/35

ORG

BLK

ORG

W14

1

2

3

4

W12

1

2

3

4

W11

4

R1

1K

C1

470P

C2

1/50

R2

56K

TDA2050

1

2

5

4

C8

0.1

U1

3

C9

0.1

C4

220/35

-VCC1

R5

56K

R6

15K

R4

1.2K

C5

47/16

R8

10

C10

0.01

C6

0.012

C7

0.1

SGND1

PGND1

R7

1K

3

2

1

2

1

W13

W10

+VCC1

R10

2.2K

W15

1

2

PGND1

2

D1

1

C11

4700/35

3

C12

4700/35

+VCC1

PGND1 SGND1

-VCC1

6301-103

W31

3

2

1

2

4

1

JK2

SP1

EXT SP

SP

6301-105

W51

1

2

D2

POWER LED

6301BX

RED

WHT

2

J3

3

BALANCE

INPUT

1

GND

WIPT

3

2

1

6301-106

CN1

3

2

1

R31

5.1K

BRN

1

T2

R32

5.1K

R34

1K

RED

1

BLK

1

UNBALANCE

INPUT

ORG

1

W62

3

2

1

YEL

1

6301-102

CN2/W26

3

2

1

R21

NON

SGND

JK1

2

4

1

SGND

R23

3.9K

+VCC

C21

NON

R22

1K

JP7

SGND

R24

10K

JP6

SGND

2

3

8

4560

U2A

4

1

-VCC

R26

NON

C22

NON

R25

3.9K

+VCC

R28

1K

C24

47/25

ZD1

15B2

SGND C25

47/25

ZD2

15B2

R29

1K

6301-104

VR1

50KA

3

2

1

R27

3.9K

6

5

SGND

4560

U2B

C23

10/16

7

4

3

2

1

W41

W21

1

2

3

4

-VCC

AC POWER IN

P1

S1

Z1

T1

6301-101

+VCC1 C3

220/35

W14

1

2

3

4

W12

1

2

3

4

ORG

W11

BLK

ORG

4

R1

1K

C1

470P

C2

1/50

R2

56K

TDA2050

1

2

5

C8

0.1

4

3

U1

C9

0.1

C4

220/35

-VCC1

R5

56K

R6

15K

R4

1.2K

C5

47/16

C6

0.012

C7

0.1

R8

10

C10

0.01

SGND1

PGND1

R7

1K

3

W13

2

1

W10

2

1

+VCC1

R10

2.2K

W15

1

2

PGND1

2

D1

3

1

C11

4700/35

C12

4700/35

+VCC1

PGND1 SGND1

-VCC1

6301-103

W31

3

2

1

2

4

1

JK2

EXT SP

SP

SP1

6301-105

W51

1

2

D2

POWER LED

6301BE

6301-104

3

VR1

50KA

2

1

4

3

2

1

W41

BALANCE

INPUT

RED

WHT

2 1

GND

J3

3

UNBALANCE

INPUT

6301-102

WIPT

3

2

1

CN2/W26

3

2

1

R21

10K

R23

3.9K

+VCC

C21

10/16

R22

10K

SGND

JP7

SGND

R24

NON

JP6

C22

10/16

2

3

8

4560

U2A

4

1

-VCC

R26

10K

R25

3.9K

R27

3.9K

6

5

SGND

4560

U2B

7

C23

10/16

SGND

JK1

2

4

1

SGND

+VCC

R28

1K

C24

47/25

ZD1

15B2

SGND C25

47/25

ZD2

15B2

R29

1K

W21

1

2

3

4

-VCC

AC POWER IN

P1

S1

Z1

T1

6301-101

+VCC1 C3

220/35

W14

1

2

3

4

W12

1

2

3

4

ORG

W11

BLK

ORG

4

R1

1K

C1

470P

C2

1/50

R2

56K

TDA2050

1

2

5

C8

0.1

4

3

U1

C9

0.1

C4

220/35

-VCC1

R5

56K

R6

15K

R4

1.2K

C5

47/16

C6

0.012

C7

0.1

R8

10

C10

0.01

SGND1

W13

3

2

1

PGND1

R7

1K

W10

2

1

+VCC1

R10

2.2K

W15

1

2

PGND1

2

3

D1

1

C11

4700/35

C12

4700/35

+VCC1

PGND1 SGND1

-VCC1

6301-103

W31

3

2

1

2

4

1

JK2

EXT SP

SP1

SP

6301-105

W51

1

2

D2

POWER LED

FOSTEX CORPORATION 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021

FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave., Norwalk, CA 90650, U.S.A.

© PRINTED IN JAPAN FEB 1999 8288779000