iPod is a trademark of Apple Inc.,
registered in the U.S and other countries
CONTENTS
MODEL
DK-AP2
(For Europe, U.K.)
MUSIC SYSTEM FOR iPod
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.
• 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.
DK-AP2(BK
(For Europe, U.K.)
)
PRECAUTIONS FOR USING LEAD-FREE SOLDER
CHAPTER 1. GENERAL DESCRIPTION
[1] Important Service Notes (for U.K. only) ..........1-1
[1] Voltage .......................................................... 4-1
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 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
[5] Wiring Side Of PWB ...................................... 5-14
CHAPTER 6. OTHERS
[1] Function Table Of IC...................................... 6-1
PARTS GUIDE
SHARP CORPORATION
– 1
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
DK-AP2/DK-AP2(BK)
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
"MAIN, iPOD, POWER SWITCH, PLAY 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
service manuals. The alphabetical character following LF shows the type of lead-free solder.
Example:
Indicates lead-free solder of tin, silver and copper.
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.
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.
Lead-free wire solder for servicing
Ref No.
PWB-A92LPWB6822MANS
PWB-B92LPWB6822SWHS
Parts No.
92LPWB6758LEDSPWB-C
Description
MAIN (A1), iPOD (A2)
POWER SWITCH (B1), PLAY SWITCH (B2), BATTERY POSITIVE (B3),
BATTERY NEGATIVE (B4)
LED
– 2
i
DK-AP2/DK-AP2(BK)
CHAPTER 1.
GENERAL DESCRIPTION
CAUTION: “Danger of explosion if battery is incorrectly replaced. Replace only with the same
or equivalent type”.
[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.
Setting of Withstanding Voltage Tester and set.
Set nameset value
Withstanding Voltage Tester
Test voltage4,240 VPEAK
Set time6 secs
Set current (Cutoff current)4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzer sounds.
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.
[2]
Specifications
3,000 VRMS
DK-AP2/DK-AP2(BK)
DK-AP2/DK-AP2(BK) for U.K.
WITHSTANDING
VOLTAGE TESTER
AC
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
PROBE
OUT
AC/DC
ADAPTOR
CONNECT THE PROBE
TO SHELL OF DC CONNECTOR
General
Power sourceDC IN 6V 2A: AC/DC adaptor
Power
consumption
Output powerSpeakers:
Speaker1-way type speaker system
Speaker maximum
input power
Speaker rated
input power
Output terminals
Input terminals
DimensionsWidth: 380 mm (15")
Weight1.2 kg (2.65 lbs)
*This power consumption value is obtained when in the power
*stand-by mode.
(AC 100 - 240 V ~ 50/60 Hz)
DC IN 3V [ “AA” size (UM/SUM-3, R6 or
HP-7) battery x 4]
Power on : 3.8 W
Power stand-by: 0.2 W (*)
RMS: 3.8 W (1.9 W + 1.9 W) (DIN 45 324)
Speakers: 5 cm (2") - 6 ohms - Full Range
3.8 W/Channel
1.9 W/Channel
Video output: 1Vp-p
Auxiliary (audio signal):
500 mV/47 k ohms
Height: 157 mm (6-2/5")
Depth: 221 mm (8-7/10")
General
Power source
Power
consumption
Output power
Speaker
Speaker maximum
input power
Speaker rated
input power
Output terminalsVideo output: 1Vp-p
Input terminalsAuxiliary (audio signal):
DimensionsWidth: 380 mm (15")
Weight1.2 kg (2.65 lbs)
* This power consumption value is obtained when in the power
stand-by mode.
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 on : 3.8 W
Power stand-by: 0.2 W*
Speakers:
RMS: 3.8 W (1.9 W + 1.9 W) (10% T.H.D.)
1-way type speaker system
Speakers: 5 cm (2") - 6 ohms - Full Range
3.8 W/Channel
1.9 W/Channel
500 mV/47 k ohms
Height: 157 mm (6-2/5")
Depth: 221 mm (8-7/10")
1 – 3
1 – 1
DK-AP2/DK-AP2(BK)
[3] Names Of Parts
12
12
3456789
34 5 6 7 8 9
M
M
ESOUND
ESOUND
STAND-BY
STAND-BY
U
U
Top view
1. Power Indicator
2. E SOUND Indicator
3. Skip Down Button
4. Play/Pause Button
5. Skip Up Button
6. iPod Dock
+
+
- VOL
- VOL
-BY
-BY
N/STAND
N/STAND
O
O
P
P
2
2
-
-
K
K
D
D
A
A
M
M
E
E
T
T
S
S
Y
Y
I
I
C
C
S
S
S
S
-
-
-
-
10
10
7. Volume Down Button
8. ON/STAND-BY Button
9. Volume Up Button
10. Stand-by Indicator
Side view
1. DC Input Socket
2. Auxiliary Input Socket
3. Video Out Socket
VIDEO
OUT
DC IN 6V
AUX IN
2
1
3
1
Bottom view
1. Battery Compartment
Remote control
1
2
3
4
5
6
7
8
9
10
1. Remote Control Transmitter
2. On/Stand-by Button
3. Volume Up and Down Buttons
4. Skip Down Button
5. Skip Up Button
6. Dimmer Button
7. Display Button
8. Play Mode Button
9. E SOUND Button
10. Play/Pause Button
1 – 4
1 – 2
CHAPTER 2. MECHANICAL DESCRIPTION
[1] Disassembly
DK-AP2/DK-AP2(BK)
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.
3) Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
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 resistor.
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 symbol 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 Digital Multimeter between such a
section and the chassis with no signal given.
1. In the tuner section,
indicates FM stereo
• 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.
[2] Types Of Transistor And LED
B
(3)
TOP
VIEW
E
(1)
KRC107S
KTC3875 GR
KRA102S
KTC2875B
FRONT
VIEW
3 2 1
KIA78D05
C
(2)
Cathode
Anode
A304VT2H
A343BD2S2
A304AD2E
TOP VIEW
MA111
IN5820
SK24A
MA21038
RB160M30
D1SS119
KiA278R05
FRONT
VIEW
12345
1 - INPUT (Vin)
2 - OUTPUT (V
O)
3 - GND
4 - V
OSENSE
5 - ON/OFF CTRL (V
C)
5 – 1
DK-AP2/DK-AP2(BK)
[3] Schematic Diagram
A
B
C
D
E
F
G
H
1
23456
Figure 5-1: MAIN SCHEMATIC DIAGRAM (1/6)
5 – 2
DK-AP2/DK-AP2(BK)
7
89101112
Figure 5-2: MAIN SCHEMATIC DIAGRAM (2/6)
5 – 3
DK-AP2/DK-AP2(BK)
13
1415161718
Figure 5-3: MAIN SCHEMATIC DIAGRAM (3/6)
5 – 4
DK-AP2/DK-AP2(BK)
A
B
C
D
E
F
G
H
1
23456
Figure 5-4: MAIN SCHEMATIC DIAGRAM (4/6)
5 – 5
DK-AP2/DK-AP2(BK)
7
89101112
Figure 5-5: MAIN SCHEMATIC DIAGRAM (5/6)
5 – 6
DK-AP2/DK-AP2(BK)
13
1415161718
Figure 5-6: MAIN SCHEMATIC DIAGRAM (6/6)
5 – 7
DK-AP2/DK-AP2(BK)
Figure 5-7: IPOD SCHEMATIC DIAGRAM (1/2)
5 – 8
DK-AP2/DK-AP2(BK)
Figure 5-8: IPOD SCHEMATIC DIAGRAM (2/2)
5 – 9
DK-AP2/DK-AP2(BK)
SCHEMATIC DIAGRAM FOR LED SECTION
SCHEMATIC DIAGRAM FOR SWITCH SECTION
SCHEMATIC DIAGRAM FOR BATTERY SECTION
Figure 5-9: LED, BATTERY AND SWITCH SCHEMATIC DIAGRAM
5 – 10
-MEMO-
DK-AP2/DK-AP2(BK)
5 – 11
DK-AP2/DK-AP2(BK)
3
2
8
V
[4] Wiring Connection
A
B
LED PWB-C
MAIN PWB-A1
CNS301
1234
RDBKGY
5
BI301
BK
321
4
DC IN 6V
JK800
AUX IN
C
VIDEO OUT
D
E
RD
4
BK
321
BK
BL
CNS102
JK101
JK100
15
FFC202
CNP102
4321
1
15
CNP801
4321
CNP
5791113
468101214
F
G
iPOD PWB-A2
CNP201
CNP202
13579111315
2468101214
RD
BATTERY POSITI
PWB-B3
FROM
H
EXTERNAL IPOD
DEVICE
1
23456
Figure 5-10: WIRING CONNECTION (1/2)
5 – 12
C
POWER SWITCH PWB-B1
DK-AP2/DK-AP2(BK)
NP801
21
BI400
RD
123456789
BK
GY
BK
GY
RD
BK
GY
BK
CNS802
12345
BI401
CNP804
21
123456789
CNP802
CNP800
1357911
246810
1
2
3
54
6
2 CNS8041
RD
BL
PLAY SWITCH PWB-B2
BATTERY 1.5V
BATTERY 1.5V
BL
SITIVE
3
BATTERY NEGATIVE
PWB-B4
7
COLOR TABLE
GY
RD
BK
BL
89101112
Figure 5-11: WIRING CONNECTION (2/2)
5 – 13
GRAY
RED
BLACK
BLUE
DK-AP2/DK-AP2(BK)
[5] Wiring Side Of PWB
A
MAIN PWB-A1
B
DC IN 6V
C
D
E
F
AUX IN
VIDEO OUT
4321
4321
G
H
1
23456
Figure 5-12: WIRING SIDE OF MAIN PWB (TOP VIEW) (1/2)
5 – 14
DK-AP2/DK-AP2(BK)
432
1
1234567
89
1
2468101214
13579111315
2
Lead-free solder indication
Lead-free solder is used in the MAIN PWB.
Refer to "Precautions for handling lead-free solder" for instructions
and precautions.
7
89101112
Figure 5-13: WIRING SIDE OF MAIN PWB (TOP VIEW) (2/2)
5 – 15
DK-AP2/DK-AP2(BK)
A
MAIN PWB-A1
B
C
D
C856
R861
C857
R862
C858
E
F
R863
C859
R864
C860
R865
C861
R866
C862
R867
7
0
8R
G
Lead-free solder indication
Lead-free solder is used in the MAIN PWB.
H
Refer to "Precautions for handling lead-free solder" for instructions
and precautions.
1
23456
Figure 5-14: WIRING SIDE OF MAIN PWB (BOTTOM VIEW) (1/2)
5 – 16
DK-AP2/DK-AP2(BK)
7
89101112
Figure 5-15: WIRING SIDE OF MAIN PWB (BOTTOM VIEW) (2/2)
5 – 17
DK-AP2/DK-AP2(BK)
A
iPOD PWB-A2
B
C
2
31579113151
4
68102141
D
E
F
G
H
Lead-free solder is used in the iPOD PWB.
Refer to “Precautions for handling lead-free solder” for instructions
and precautions.
1
23456
Figure 5-16: WIRING SIDE OF iPOD PWB (TOP VIEW)
5 – 18
A
iPOD PWB-A2
B
C
DK-AP2/DK-AP2(BK)
D
E
F
G
H
Lead-free solder is used in the iPOD PWB.
Refer to “Precautions for handling lead-free solder” for instructions
and precautions.
1
23456
Figure 5-17: WIRING SIDE OF iPOD PWB (BOTTOM VIEW)
5 – 19
DK-AP2/DK-AP2(BK)
A
B
C
POWER SWITCH PWB-B1PLAY SWITCH PWB-B2
123
12 34 56
45
BATTERY POSITIVE PWB-B3BATTERY NEGATIVE PWB-B4
D
E
LED PWB-C
F
12345
G
Lead-free solder is used in the LED, POWER SWITCH, PLAY SWITCH, BATTERY POSITIVE and BATTERY NEGATIVE PWB.
Refer to “Precautions for handling lead-free solder” for instructions
H
and precautions.
1
Figure 5-18: WIRING SIDE OF LED, POWER SWITCH, PLAY SWITCH, BATTERY POSITIVE and BATTERY NEGATIVE PWB (TOP VIEW)
IC805 VHiNJU7707F-1 : VOLTAGE DETECTOR ( NJU7707F )
PIN CONFIGURATION PIN FUNCTION
5
123
EQUIVALENT CIRCUIT
V
DD
4
1. DSW
V
2.
SS
3. MR
V
4.
OUT
V
5.
DD
+
-
Delay Circuit
V
OUT
V
V
V
SS
DD
SS
Vref
Vref
DSW
+
Delay Circuit
-
DSW
MR
MR
V
OUT
6 – 8
IC809 VHiNJU3713A-1 : 12-Bit SERIAL TO PARALLEL CONVERTER ( NJU3713A ) (1/2)
PIN CONFIGURATION
V
P5
P6
P7
P8
V
SS
NC
P9
P10
P11
P12
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11D ATA
DD
P4
P3
P2
P1
NC
CLR
STB
CLK
DK-AP2/DK-AP2(BK)
BLOCK DIAGRAM
DATA
CLK
STB
CLR
P1
P2
P3
Latch Circuit
Shift Register
P11
P12
Controller Circuit
6 – 9
DK-AP2/DK-AP2(BK)
IC809 VHiNJU3713A-1 : 12-Bit SERiAL TO PARALLEL CONVERTER ( NJU3713A ) (2/2)
PIN DESCRIPTION
Pin No.SymbolI/ODescription
1P5O
2P6O
3P7O
4P8O
5V
6NC–Non Connection
7P9O
8P10O
9P11O
10PI2O
11DATAISerial Data Input Terminal
12CLKIClock Signal Input Terminal
13STBIStrobe Signal Input Terminal
14CLRIClear Signal Input Terminal
15NC–Non Connection
16P1O
17P2O
18P3O
19P4O
20V
SS
DD
–GND
–Power Supply Terminal (2.4 to 5.5V)
Parallel Conversion Data Output Terminals
Parallel Conversion Data Output Terminals
Parallel Conversion Data Output Terminals
6 – 10
IC810 VHiTPS61032-1 : DC - DC CONVERTER ( PS61032 )
BLOCK DIAGRAM
SW
VBAT
Anti-
Ringing
Gate
Control
PGND
DK-AP2/DK-AP2(BK)
VOUT
PGND
PGND
100 kΩ
EN
SYNC
GND
LBI
Regulator
Control Logic
V
REF
GND
Oscillator
Temperature
Low Battery Comparator
= 0.5 V
Error Amplifier
V
Control
REF
10 pF
FB
= 0.5 V
GND
LBO
PIN CONFIGURATION
SW
SW
PGND
PGND
PGND
VBAT
LBI
SYNC
1
2
3
4
5
6
7
8
PowerPAD
16
15
14
13
12
11
10
NC
VOUT
VOUT
VOUT
FB
GND
LBO
9
EN
6 – 11
DK-AP2/DK-AP2(BK)
-MEMO-
6 – 12
DK-AP2/DK-AP2(BK)
PARTS GUIDE
MUSIC SYSTEM FOR iPod
[1]INTEGRATED CIRCUITS
[2]TRANSISTORS
[3]DIODES
[4]COILS
MODEL
MUSIC SYSTEM FOR iPod
MODEL
CONTENTS
[7]RESISTORS
[8]OTHER CIRCUITRY PARTS
[9]CABINET PARTS
[10] ACCESSORIES/PACKING PARTS
DK-AP2
(For Europe, U.K.)
DK-AP2(BK
(For Europe, U.K.)
)
[5]RESONATOR
[6]CAPACITORS
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.
SHARP CORPORATION
[11] P.W.B. ASSEMBLY (NOT
REPLACEMENT ITEM)
This document has been published to be used
for after sales service only.
0
The contents are subject to change without notice.
DK-AP2/DK-AP2(BK)
NO.PARTS CODE
PRICE
RANK
[1] INTEGRATED CIRCUITS
iC101 VHiNJM2794R-1ANNoise isolation,NJM2794
iC102 VHiNJM2115V-1AELow Saturation OP-Amp,NJM2115
iC103 VHiAK4555VT-1AQCodec iC
iC104 VHiNJU8757V-1ATPower Amplifier iC, NJU8757
iC600 VHiNJU26040-1AXDigital Sound Processor,NJU26040
iC601 VHi24LC2BiN-1AF2Kbit EEPROM
iC801 VHiNJM2801U-1AGLow Dropout Voltage Regulator with Reset,NJM2801
iC802 VHiNJM2880U-1AGLow Dropout Voltage Regulator ,NJM2880
iC803 VHiNJM2880U-1AGLow Dropout Voltage Regulator ,NJM2880
iC804 VHiNJM2102M-1AKSystem Reset,NJM2102
iC805 VHiNJU7707F-1AFVoltage Detector,NJU7707
iC806 VHi74HC74PW-1AEDual Flip Flop,74HC74PW
iC807 VHi74HC08PW-1ADQuad and Gate,74HC08PW
iC809 VHiNJU3713A-1AM12-BiT Serial to Parallel Coverter
iC810 VHiTPS61032-1ATDC - DC Converter,PS61032
iC811 VHiKiA278R5-1ALVoltage Regulator ,5V
iC813 VHiKiA78D05-1AGVoltage Regulator ,5V
[2] TRANSISTORS
Q100 VSKRA102S//-1ABDigital,PNP,KRA107 S
Q101 VSKTC2875B/-1ACSilicon,NPN,KTC2875 B
Q102 VSKTC2875B/-1ACSilicon,NPN,KTC2875 B
Q103 VSKTC2875B/-1ACSilicon,NPN,KTC2875 B
Q104 VSKTC2875B/-1ACSilicon,NPN,KTC2875 B
Q105 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q106 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q107 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q108 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q601 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q801 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q802 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q803 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q804 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q805 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q806 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q807 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q808 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q809 VSKRC107S//-1ABDigital,NPN,KRC107 S