Sharp FV-DB2ES (serv.man3) Service Manual ▷ View online
FV-DB2E
SERVICE MANUAL
The stylized mark ‘DAB Digital Radio’ is a trademark of Digital One
Limited used under licence, and the stylized ‘R’ mark is a registered
trademark of Digital One Limited.™ & © 2003.
Limited used under licence, and the stylized ‘R’ mark is a registered
trademark of Digital One Limited.™ & © 2003.
No. S5536FVDB2ES/
SHARP CORPORATION
CONTENTS
Parts marked with "
" are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for
maintaining the safety and performance of the set.
CHAPTER 1. GENERAL DESCRIPTION
[1] Specifications ................................................. 1-1
[2] Names of parts............................................... 1-2
[1] Specifications ................................................. 1-1
[2] Names of parts............................................... 1-2
CHAPTER 2. ADJUSTMENTS
[1] Tuner
[1] Tuner
section ................................................. 2-1
[2] How to check the version number of the
system microcomputer ................................... 2-1
[3] TEST
MODE .................................................. 2-2
CHAPTER 3. MECHANISM BLOCKS
[1] Caution
[1] Caution
on
disassembly ................................. 3-1
CHAPTER 4. DIAGRAM
[1] Block
[1] Block
diagram ................................................ 4-1
CHAPTER 5. CIRCUIT DESCRIPTION
[1] Notes on schematic diagram .........................5-1
[2] Types of transistor and LED ..........................5-1
[3] Voltage...........................................................5-2
[1] Notes on schematic diagram .........................5-1
[2] Types of transistor and LED ..........................5-1
[3] Voltage...........................................................5-2
CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Schematic
LAYOUT
[1] Schematic
diagram........................................6-1
[2] Wiring side of PWB........................................6-3
CHAPTER 7. OTHER
[1] Function table of IC .......................................7-1
[1] Function table of IC .......................................7-1
Parts Guide
DAB RECEIVER
FV-DB2E(S)
FV-DB2E(W)
MODEL
In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
original condition and only parts identical to those specified be
used.
FV-DB2E
– i –
[1] Important service notes
Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the cus-
tomer to use.
Setting of Withstanding Voltage Tester and set.
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the cus-
tomer to use.
Setting of Withstanding Voltage Tester and set.
Set name
set value
Withstanding Voltage Tester
Test voltage
4.7 kV DC
Set time
3 secs
Set current (Cutoff current)
3 mA
Unit
Judgment
OK: The "GOOD" lamp lights.
NG: The "NG" lamp lights and the buzzer sounds.
NG: The "NG" lamp lights and the buzzer sounds.
PROBE
AC
OUT
UNIT
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
TO GND OF CHASSIS
SCREW
WITHSTANDING
VOLTAGE TESTER
FV-DB2E
1 – 1
Audio
FV-DB2E
Service Manual
FV-DB2E
Market
E
CHAPTER 1.
GENERAL DESCRIPTION
[1] Specifications
General
Radio
Type
DAB receiver
Power source
DC 9 V: AC adaptor (AC 230 - 240 V, 50 Hz)
DC 9 V: "C" size (LR14) alkaline battery 6
as main batteries
as main batteries
DC 3 V: "AA" size (UM/SUM-3, R6, or HP-7)
battery
battery
2 as memory batteries
Power consump-
tion
tion
11 W (AC adaptor)
7 W (DC, batteries)
Output power
RMS: 4 W (2 W + 2 W) (DIN 45 324)
Speaker
8 cm full-range speaker
Output terminals
Headphones: 3.5 mm stereo mini plug ty
pe
1
16 - 50 ohms (recommended: 32 ohms)
Line output (audio signal): 3.5 mm stereo
mini plug type
mini plug type
1
2 V/10 k ohms at DAB 0 dB
Dimensions
Width: 320 mm
Height: 135 mm
Depth: 100 mm
Height: 135 mm
Depth: 100 mm
Weight
1.7 kg (without batteries)
Frequency range
DAB: 174 - 240 MHz (Band-III)
1,450 - 1,492 MHz (L-Band)
FM: 87.5 - 108 MHz
Except for U.K.
For U.K.
General
Radio
Type
DAB receiver
Power source
DC 9 V: AC adaptor (AC 230 - 240 V, 50 Hz)
DC 9 V: "C" size (LR14) alkaline battery
6
as main batteries
DC 3 V: "AA" size (UM/SUM-3, R6, or HP-7)
battery
battery
2 as memory batteries
Power consump-
tion
tion
11 W (AC adaptor)
7 W (DC, batteries)
Output power
RMS: 4 W (2 W + 2 W) (10 % T.H.D.)
Speaker
8 cm full-range speaker
Output terminals
Headphones: 3.5 mm stereo mini plug type
1
16 - 50 ohms (recommended: 32 ohms)
Line output (audio signal): 3.5 mm stereo
mini plug type
mini plug type
1
2 V/10 k ohms at DAB 0 dB
Dimensions
Width: 320 mm
Height: 135 mm
Depth: 100 mm
Height: 135 mm
Depth: 100 mm
Weight
1.7 kg (without batteries)
Frequency range
DAB: 174 - 240 MHz
FM: 87.5 - 108 MHz
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
TO THE OPERATION MANUAL.
Specifications for this model are subject to change without
prior notice.
prior notice.
FV-DB2E
1 – 2
[2] Names of parts
1. On/Stand-by Button
2. Preset Number Select/Time Shift Mode Buttons
3. Time Shift Button
4. Preset Zone Select Button
5. Auto Tune Button
6. Information Select Button
7. Band Select Button
8. Alarm Set Indicator (illuminates in the stand-by mode)
9. Menu Button
2. Preset Number Select/Time Shift Mode Buttons
3. Time Shift Button
4. Preset Zone Select Button
5. Auto Tune Button
6. Information Select Button
7. Band Select Button
8. Alarm Set Indicator (illuminates in the stand-by mode)
9. Menu Button
10. Kitchen Timer Button
11. Sound Mode Select Button
12. Clock Button
13. Enter Button
14. Volume Up and Down/Tuning Up and Down/
11. Sound Mode Select Button
12. Clock Button
13. Enter Button
14. Volume Up and Down/Tuning Up and Down/
Item Select Lever
15. DAB Indicator
16. FM Indicator
17. FM Stereo Mode Indicator
18. Preset Zone Indicators
19. Preset Number Indicators
20. Alarm Set Indicator
21. Primary with Secondary Indicator
22. Secondary Indicator
23. FM Stereo Receiving Indicator
24. Kitchen Timer Indicator
25. Sleep Indicator
26. Time Shift Indicator
16. FM Indicator
17. FM Stereo Mode Indicator
18. Preset Zone Indicators
19. Preset Number Indicators
20. Alarm Set Indicator
21. Primary with Secondary Indicator
22. Secondary Indicator
23. FM Stereo Receiving Indicator
24. Kitchen Timer Indicator
25. Sleep Indicator
26. Time Shift Indicator
27. Telescopic Rod Aerial
28. Analogue Line Output Socket
29. Headphone Socket
30. Battery Compartment
31. DC 9 V Input Socket
28. Analogue Line Output Socket
29. Headphone Socket
30. Battery Compartment
31. DC 9 V Input Socket
1
3
28
29
30
31
8
9 10 11
15 16 17
18
19
20
21
22
23
23
24
25
26
12
14
13
4 5 6 7
2
27
