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FV-DB2E

3 – 1

Audio

FV-DB2E

Service Manual

FV-DB2E

Market

E

 

Caution on Disassembly

Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:

1. Be sure to remove the power supply plug from the wall outlet before starting to disassemble the unit.

2. Take off nylon bands or wire holders where they need to be removed when disassembling the unit. After servicing the unit, be sure to rearrange

the leads where they were before disassembling.

1

Front Panel

1. Screw .................... (A1) x2
2. Screw .................... (A2) x4

2

Display PWB

1. Screw ......................

.....................

(B1) x4

2. Socket

(B2) x5

.....................

5. Socket

(C5) x3

....................

4. Bracket

(C4) x1

.....................

3. Socket

(A3) x2

(B3) x1

3

Power PWB/
DC Jack PWB

Tuner PWB

3. Screw ...................... (C3) x3

2. Cover

(C2) x1

1. Screw ......................

......................

(C1) x1

4

1. Screw ...................... (D1) x2
2. Screw ...................... (D2) x2

3. Tip ...........................

3. Socket .....................

2. Socket .....................

(D3) x1

......................

5

Main PWB

1. Screw ...................... (E1) x2

6

Switch A PWB

1. Screw ...................... (F1) x4

(F2) x1

2. Socket ..................... (E2) x1

7

Switch B PWB

1. Screw ...................... (G1) x4
2. Screw ...................... (G2) x5

2. Screw ...................... (H2) x2

8

Power Switch
PWB

1. Screw

(H1) x2

(A1)x2

φ3x12mm

(A2)x4

φ3x12mm

Rear Cabinet

Front Panel

Front
Panel

(G1)x2

φ2.6x10mm

(H1)x2

φ2.6x10mm

Switch B PWB

Button, Function

Button, ON/Stand-by

Button, Time Shift

Button, Preset

Switch A PWB

Power Switch
PWB

SP601

SP602

(G2)x5

φ2.6x10mm

(F1)x4

φ2.6x10mm

(G1)x2

φ2.6x10mm

(F2)x1

(H2)x2

φ2.6x10mm

(D2)x2

φ3x6mm

(C3)x2

φ3x10mm

(C3)x1

φ3x10mm

(D1)x2

φ3x10mm

(E1)x2

φ3x8mm

(B2)x1

(A3)x1

(E2)x1

(D3)x1

(C5)x1

(C2)x1

(B2)x1

(C5)x2

(C4)x1

(B2)x1

Rear Cabinet

DC Jack
PWB

Power
PWB

Tuner PWB

Bracket, Earth

Main PWB

(C1)x1

φ3x10mm

Terminal A
PWB

Terminal B
PWB

(B1)x4

φ3x12mm

Rear Cabinet

Display PWB

(B2)x1

(B2)x1

(A3)x1

(B3)x1

FV-DB2E

4 – 1

Audio

FV-DB2E

Service Manual

FV-DB2E

Market

E

 

BF301

36

14

17

3

18 20 19

3

4

10 2

5

16

15

21

22

31

33
44

1

2

3

9

43

36

5

25

5

18
19

1
2

4 6 7 10 11 13 14 20

35

16 17

18

6

4

1

3

GND1

VSS

GND2

33

21

12
13

11

14

12
13

3

2

1

9V

IC301

LV23002M

FM FRONT END/PLL (TUNER)/

FM IF DET./FM MPX./AM IF

IC103

5V

VCC1 VCC2

5V

3.3V

ZD308

VDD

L-OUT
R-OUT

DI CL DO

15

CE

TUN1

DAB
3.3V

DAB

5V

AAVD_L

AAVD_R

SI_DOUT

SI_DIN

SI_DOUT

RESET

PWE_DET

SI_DIN

DO

CLK

DI

PLL_CE

VOL_CE

VDD2

VDD1

VSS2

VSS1 AMP_POWE

SI SCL

VSS

4

6 7

VDD

3.3V

LCD402

DAB POWE

IC401

IXA042SJ

SYSTEM

MICROCOMPUTER

LC

PRO

L_2
R_2

DAB_L
DAB_R

IC404

PST9127

RESET

9V

1

2

3

IC402

PST9119

RESET

3.3V

FM ROD

ANTENNA

KIA7805P

VOLTAGE

REGULATOR

SW401~SW420

DAB UNIT

PWB

FV-DB2E

4 – 2

4

10 24

3

1

2

24

7

5

2

3

1

5

56

54

53

1

23

8

4

21

7
6

11

12

2

17

4

2
3

1

9V

9V

1

9V

9V

03

VOL_CE

VDD2

VDD1

AMP_POWER

SCL

VSS

7

LCD402

DAB POWER

01

42SJ
TEM

MPUTER

IC101

LC75341M

AUDIO

PROCESSOR

L_2

L_OUT

R_OUT

R_2

DAB_L
DAB_R

VSS

CLK DI CE

VDD

L_SELD

R_SELD

Q101
Q103

Q102
Q104

MUTING

JK101

ANALOG LINE

OUTPUT

IC104

LA4627N

POWER

AMP.

VDD

MEMORY
BATTERY

3.3V

3.3V

D401

D702

D405

IC403

IC702

BA033T

VOLTAGE

REGULATOR

BA05CC0T

VOLTAGE

REGULATOR

Q404

Q701

Q106

Q107

Q109

DAB
3.3V

2

3

1

IC701

DAB

5V

AC ADAPTOR

JK102

HEADPHONES

MAIN

BATTERY

ROUT

LOUT

05P

GE

ATOR

SI3033LUS

3.3 V

REGULATOR

Q401~
Q403

LED401~
LED403

LED DRIVER

D703

D705

JK701
DC INPUT

SP601
SP602

D102

FV-DB2E

5 – 1

Audio

FV-DB2E

Service Manual

FV-DB2E

Market

E

 

• Resistor:

To differentiate the units of resistors, such symbol as K and M are
used: the symbol K means 1000 ohm and the symbol M means
1000 kohm and the resistor without any symbol is ohm-type resis-
tor. Besides, the one with “Fusible” is a fuse type.

• Capacitor:

To indicate the unit of capacitor, a symbol P is used: this symbol P
means pico-farad and the unit of the capacitor without such a sym-
bol is microfarad. As to electrolytic capacitor, the expression
“capacitance/withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type

• Schematic diagram and Wiring Side of P.W.Board for this model are

subject to change for improvement without prior notice.

• The indicated voltage in each section is the one measured by Digi-

tal Multimeter between such a section and the chassis with no sig-
nal given.

1. In the tuner section,
    indicates AM
    indicates FM stereo

• Parts marked with “

“ (

) are important for main-

taining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the
set.

SW401

TUNING UP

ON-OFF

SW402

VOLUME UP

ON-OFF

SW403

TUNING DOWN

ON-OFF

SW404

VOLUME DOWN

ON-OFF

SW405

ENTER

ON-OFF

SW406

CLOCK

ON-OFF

SW407

SOUND

ON-OFF

SW408

K-TIMER

ON-OFF

SW409

MENU

ON-OFF

SW410

PRESET 1

ON-OFF

SW411

PRESET 2

ON-OFF

SW412

PRESET 3

ON-OFF

SW413

PRESET 4

ON-OFF

SW414

PRESET 5

ON-OFF

SW415

TIMER SHIFT

ON-OFF

SW416

PRESET SELECT

ON-OFF

SW417

AUTO TUNE

ON-OFF

SW418

INFO

ON-OFF

SW419

BAND

ON-OFF

SW420

ON/STAND-BY

ON-OFF

2SC5477
KTC3875 GR

B

(3)

E

(1)

C

(2)

TOP

VIEW

2HA1015 GR
2HC1815 GR
HSB562 HC
HRC107 M

VIEW

FRONT

E C B

(S)(G)(D)

(1)(2)(3)

LP3052AU

LPBB73VQ

FRONT
VIEW