Sharp DK-V2 (serv.man2) Service Manual ▷ View online
DK-V2
– 1
SERVICE MANUAL
No. S8744DKV2H///
• In the interests of user-safety the set should be restored to
its original condition and only parts identical to those
specified be used.
The Bluetooth word mark and logos are owned by the Bluetooth
SIG, Inc. and any use of such marks by SHARP is under license.
SIG, Inc. and any use of such marks by SHARP is under license.
PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] Important Service Notes (for U.K. only) ..........1-1
[2] Specifications .................................................1-1
[3] Name Of Parts................................................1-2
[1] Important Service Notes (for U.K. only) ..........1-1
[2] Specifications .................................................1-1
[3] Name Of Parts................................................1-2
CHAPTER 2. MECHANICAL DESCRIPTION
[1] Disassembly .................................................. 2-1
[1] Disassembly .................................................. 2-1
CHAPTER 3. DIAGRAMS
[1] Block Diagram ................................................3-1
[1] Block Diagram ................................................3-1
CHAPTER 4. CIRCUIT DESCRIPTION
[1] Voltage .......................................................... 4-1
[1] Voltage .......................................................... 4-1
CHAPTER 5. CIRCUIT SCHEMATICS AND PARTS
LAYOUT
[1] Notes On Schematic Diagram .......................5-1
[2] Types Of Transistor And LED........................5-1
[3] Chart Of Connecting Wires............................5-2
[4] Schematic Diagram .......................................5-4
[5] Wiring Side Of PWB ......................................5-18
[2] Types Of Transistor And LED........................5-1
[3] Chart Of Connecting Wires............................5-2
[4] Schematic Diagram .......................................5-4
[5] Wiring Side Of PWB ......................................5-18
CHAPTER 6. OTHERS
[1] Function Table Of IC......................................6-1
[1] Function Table Of IC......................................6-1
PARTS GUIDE
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.
specified ones for maintaining the safety and performance of the set.
CONTENTS
DK-V2
MODEL
SHARP CORPORATION
(For Europe, U.K.)
• Note for users in U.K.
Recording and playback of any material may require
consent which SHARP is unable to give. Please refer
particularly to the provisions of Copyright Act 1956, the
Performers Protection Acts 1963 and 1972 and subsequent
statutory enactments and orders.
BLUETOOTH
®
STEREO SPEAKER
DK-V2
– 2
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
Example:
Indicates lead-free solder of tin, silver and copper.
Lead-free wire solder for servicing
Ref No.
Description
Parts No.
PWB-A
92LPWB6758MANS
92LPWB6758LEDS
PWB-C
MAIN
PWB-B
92LPWB6758SWHS
SWITCH (B1), BATTERY POSITIVE (B2), BATTERY NEGATIVE (B3)
LED
"MAIN, SWITCH, BATTERY POSITIVE, BATTERY NEGATIVE, LED PWB" of this model employs lead-free
solder. The LF symbol indicates lead-free solder, and is attached on the PWB and ser vice manuals.The
alphabetical character following LF shows the type of lead-free solder.
solder. The LF symbol indicates lead-free solder, and is attached on the PWB and ser vice manuals.The
alphabetical character following LF shows the type of lead-free solder.
2. Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering
bit, contact our service station or service branch in your area.
lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering
bit, contact our service station or service branch in your area.
3. Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead
solder by 40°C,and as it has poor solder wet ability, you may be apt to keep the soldering bit in contact with the
PWB for extended period of time. However, since the land may be peeled of for the maximum heat-resistance
temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady
soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn
on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is
alloyed with lead-free solder. Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sand paper.
Be careful when replacing parts with polarity indication on the PWB silk.
solder by 40°C,and as it has poor solder wet ability, you may be apt to keep the soldering bit in contact with the
PWB for extended period of time. However, since the land may be peeled of for the maximum heat-resistance
temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady
soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corrected. Make sure to turn
on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is
alloyed with lead-free solder. Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sand paper.
Be careful when replacing parts with polarity indication on the PWB silk.
i
DK-V2
1 – 3
CHAPTER 1. GENERAL DESCRIPTION
[2] Specifications
DK-V2
[1] Important Service Notes (for U.K. only)
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 customer to use.
applied to ensure the unit is safe for the customer to use.
Setting of Withstanding Voltage Tester and set.
Set name
set value
Withstanding Voltage Tester
Test voltage
Test voltage
4,240 VPEAK
3,000 VRMS
3,000 VRMS
Set time
6 secs
Set current (Cutoff current)
4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzer sounds.
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzer sounds.
PROBE
AC
OUT
AC/DC
ADAPTOR
SHORT-CIRCUIT
AC POWER
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO SHELL OF DC CONNECTOR
WITHSTANDING
VOLTAGE TESTER
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.
DK-V2 for U.K.
General
(*1) This power consumption value is obtained when in the power
stand-by mode.
(*2) The actual range will vary depending on factors such as
obstacles between devices, magnetic fields around a
microwave oven, static electricity, reception sensitivity, aerial’s
performance, operating system, software application, etc.
microwave oven, static electricity, reception sensitivity, aerial’s
performance, operating system, software application, etc.
Power source
DC IN 6V
2A: AC/DC adaptor
(AC 100 - 240 V ~ 50/60 Hz)
DC IN 3V
[ “AA” size (UM/SUM-3, R6 or
HP-7) battery x 4]
Power
consumption
consumption
Power on: 3 W
Power stand-by: 0.5 W (*1)
Power stand-by: 0.5 W (*1)
Output power
RMS: 3.8 W (1.9 W + 1.9 W) (DIN 45 324)
Speaker
1-way type speaker system
5 cm (2") - 6 ohms - Full Range
5 cm (2") - 6 ohms - Full Range
Speaker
maximum input
power
maximum input
power
3.8 W/Channel
Speaker rated
input power
input power
1.9 W/Channel
Input
terminals
terminals
Auxiliary (audio signal): 251 mv/47 k ohms
Dimensions
Width: 380 mm (15")
Height: 158.5 mm (6-1/5")
Depth: 157 mm (6-1/8")
Height: 158.5 mm (6-1/5")
Depth: 157 mm (6-1/8")
Weight
1.1 kg (2.40 lbs.)
Communication
system
system
Bluetooth Specification version 1.2
Output
Bluetooth Specification Power Class 2
Maximum
communication
range
communication
range
Line of sight approx. 10 meters (30 feet) (*2)
Frequency
band
band
2.4 GHz band (2.4000 GHz - 2.4835 GHz)
Compatible
Bluetooth
profile
Bluetooth
profile
A2DP (Advanced Audio Distribution Profile)
CAUTION: “Danger of explosion if battery is incorrectly replaced. Replace only with the same
or equivalent type”.
or equivalent type”.
General
(*1) This power consumption value is obtained when in the power
stand-by mode.
(*2) The actual range will vary depending on factors such as
obstacles between devices, magnetic fields around a
microwave oven, static electricity, reception sensitivity, aerial’s
performance, operating system, software application, etc.
microwave oven, static electricity, reception sensitivity, aerial’s
performance, operating system, software application, etc.
Power source
DC IN 6V
2A: AC/DC adaptor
(AC 100 - 240 V ~ 50/60 Hz)
DC IN 3V
[ “AA” size (UM/SUM-3, R6 or
HP-7) battery x 4]
Power
consumption
consumption
Power on: 3 W
Power stand-by: 0.5 W (*1)
Power stand-by: 0.5 W (*1)
Output power
RMS: 3.8 W (1.9 W + 1.9 W) (10% T.H.D.)
Speaker
1-way type speaker system
5 cm (2") - 6 ohms - Full Range
5 cm (2") - 6 ohms - Full Range
Speaker
maximum input
power
maximum input
power
3.8 W/Channel
Speaker rated
input power
input power
1.9 W/Channel
Input
terminals
terminals
Auxiliary (audio signal): 251 mv/47 k ohms
Dimensions
Width: 380 mm (15")
Height: 158.5 mm (6-1/5")
Depth: 157 mm (6-1/8")
Height: 158.5 mm (6-1/5")
Depth: 157 mm (6-1/8")
Weight
1.1 kg (2.40 lbs.)
Communication
system
system
Bluetooth Specification version 1.2
Output
Bluetooth Specification Power Class 2
Maximum
communication
range
communication
range
Line of sight approx. 10 meters (30 feet) (*2)
Frequency
band
band
2.4 GHz band (2.4000 GHz - 2.4835 GHz)
Compatible
Bluetooth
profile
Bluetooth
profile
A2DP (Advanced Audio Distribution Profile)
1 – 1
DK-V2
1 – 4
Front view
1. Pairing Indicator
2. Extra Bass Indicator
3. STAND-BY Indicator
4. Pairing Button
5. Volume Down Button
6. ON/STAND-BY Button
7. Volume Up Button
8. Extra Bass Button
Side view
1. DC Input
2. Auxiliary Input Socket
Bottom view
1. Battery Compartment
[3] Names Of Parts
1
2
3
4 5
7
6
8
1
2
1
1 – 2
