[4] Charts Of Connecting Wires .......................6-22
[5] Wiring Side Of PWB ....................................6-24
CD-DK890N
CHAPTER 3. MECHANISM BLOCKS
[1] Caution On Disassembly................................ 3-1
[2]
Removing And Reinstalling The Main Parts
CHAPTER 4. DIAGRAMS
[1] Main Block Diagrams ..................................... 4-1
[2] CD Block Diagrams....................................... 4-3
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.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
Page 2
CD-DK890N
AudioXL-MP150Service ManualXLMP150MarketE
PRECAUTIONS FOR USING LEAD-FREE SOLDER
1. Employing lead-free solder
"MAIN, POWER, DISPLAY, AUDIO IN, iPOD TRANSIT, iPOD, CD 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 wettability, 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 sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
Ref No.
PWB-A 92LPWB7312MANS MAIN (A1), POWER (A2)
PWB-B 92LPWB7312DPLS DISPLAY (B1), AUDIO IN (B2), iPOD TRANSIT (B3)
PWB-C 92LPWB7312PODS iPOD
PWB-D 92LPWB6700CDUS CD
Parts No.
Description
– i –
Page 3
CD-DK890N
CHAPTER 1: GENERAL DESCRIPTION
[1] Important Service Safety Precaution
CAUTION : “These servicing instructions are for use by qualified service personnel only. To reduce
the risk of electric shock do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so”.
WARNING
1. For continued safety, no modification of any circuit should be
attempted.
2. Disconnect AC power before servicing.
CAUTION: FOR CONTINUED
PROTECTION AGAINST FIRE
HAZARD, REPLACE ONLY WITH
SAME TYPE F801, F802, F805 4A, 125V/
F80, F804 2.5A, 125V FUSES.
ATTENTION: POUR ASSURER
UNE LONGUE PROTECTION CONTRE
UN INCENDIE, REMPLACER SEULEMENT
PAR UN FUSIBLE DE
TYPE F801, F802, F805 4A, 125V/
F803, F804 2.5A, 125V FUSES.
[2] Important Service Notes (for U.S.A only)
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform
the following safety checks.
1. Inspect all lead dress to make certain that leads are not
pinched or that hardware is not lodged between the
chassis and other metal parts in the audio product.
2. Inspect all protective devices such as insulating
materials, cabinet, terminal board, adjustment and
compartment covers or shields, mechanical insulators
etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
Plug the AC line cord directly into a 120 volt AC outlet.
*
* Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series
with all exposed metal cabinet parts and a known
earth ground, such as conduit or electrical ground
connected to earth ground.
Use a VTVM or VOM with 1000 ohm per volt, or
*
higher, sensitivity to measure the AC voltage drop
across the resistor (See diagram).
* Connect the resistor connection to all exposed metal
parts having a return path to the chassis (antenna,
metal cabinet, screw heads, knobs and control shafts,
escutcheon, etc.) and measure the AC voltage drop
across the resistor.
VTVM
AC SCALE
1.5k ohms
10W
0.15 µ F
TEST PROBE
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
All check must be repeated with the AC line cord plug
connection reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2
milliamp. AC.) Or more is excessive and indicates a
potential shock hazard which must be corrected before
returning the audio product to the owner.
1 – 1
–2
Page 4
CD-DK890N
[3] Specifications
General
Power sourceAC 120 V ~ 60 Hz
Power consumption
Dimensions
Weight16.32 lbs. (7.4 kg)
Amplifier
Output powerRMS : Total 250 W (125 W per channel into
Output terminalsFront Speakers: 6 ohms
Input terminalsAudio In (audio signal):
CD player
Type5-disc multi-play compact disc player
Signal readoutNon-contact, 3-beam semiconductor laser
Tape 1Tape 2
Play: TW-211125 to 85 g.cm25 to 85 g.cm
FF/REW—45 to 195 g.cm
BACK TENSION1.2 to 7.0 g.cm1.2 to 7.0 g.cm
• Tape Speed
CD-DK890N
Test Tape Adjusting
Normal
speed
Figure 1
MTT-111Variable
Tape
Motor
Point
Resistor in
motor.
TAPE MECHANISM
Specified
Value
3,000 ± 90 Hz
Speaker
Variable Resistor in motor
Instrument
Connection
Speaker
Terminal (Load
resistance:
6 ohms)
2 – 1
Page 8
CD-DK890N
[2] CD Section
CD Error code description
ErrorExplanation
10*CAM error. Can't detect CAM switch when CAM is moving.
11*When it detect cam operation error during initialize process.
20*TRAY error. Can't detect TRAY switch when TRAY is moving.
21*When it detect TRAY operation error during initialize process.
31When it change to CD function, DSP cannot read initial data.
* 'CHECKING'
If Error is detected, 'CHECKING' will be displayed instead of 'ER-CD**'. 'ER-CD**' display will only be displayed
when error had been detected for the 5
Standard Specification of Stereo System Error Message Display Contents
Error ContentsDisplayNotes
CDCD Changer Mechanism Error.'ER-CD**' (*)10: CAM SW Detection NG during normal operation
CD DSP Communication Error.'ER-CD31'DSP COMMUNICATION ERROR.
Focus Not Match/IL Time Over.'NO DISC'
TUNER PLL Unlock.PLL Unlock.
(*) CHECKING:
If CD changer mechanism error is detected, 'CHECKING' will be display instead of 'ER-CD**'. 'ER-CD**' display will
only be display when error had been detected for the 5
th
times.
FM 87.5 MHz
11: CAM SW Detection NG during initialize process
20: TRAY SW Detection NG during normal operation
21: TRAY SW Detection NG during initialize process
th
times.
Speaker abnormal detection and +B PROTECTION display
In case speaker abnormal detection or +B PROTECTION had occurred, the unit will automatically enter to stand - by
mode and Timer indicator will be flashing as below.
Example : In case of speaker abnormal
ON
FLASHING
ON
FLASHING
TIMER
LED
OFF
NO. 1
OFF
NO. 2
1 FRAME
OFF
NO. 1
OFF
NO. 2
(REPEAT)
NO.1 : +B Protection
NO.2 : Speaker abnormal
+B PROTECTION is condition when irregular process occur on power supply line.
BEFORE TRANSPORTING THE UNIT
The following process need to be taken after set tapering/parts replacement.
1. Press the ON/STAND-BY button to enter stand-by mode.
2. While pressing down the button and the button, press the ON/STAND-BY button. The Micro Computer
version number will be displayed as "CP*1001".
3. Press button until "WAIT"→ "FINISHED" appears.
4. Unplug the AC cord and the unit is ready for transporting.
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 AM
indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
• Parts marked with ““ () are impor-
tant 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.
REF. NODESCRIPTIONPOSITION
JOG701VOLUMEMAX—MIN
SW701POWER ON /STAND-BYON—OFF
SW702CDON—OFF
SW703
KTA1504 GR
KRA107 S
KRC102 S
KRC104 S
KTA1504 Y
KTC3875 GR
KRC107S
C
(2)
TOP VIEW
MA111G
1N4004
DRL204F
HSS4148
TOP VIEW
KDS184
FRONT
VIEW
AC AC
D10XB60F
6 – 1
FRONT
VIEW
SLR342VC
Page 17
CD-DK890N
[3] Schematic Diagram
A
B
C
MAIN PWB-A1
FM SIGNAL
CD SIGNAL
AUDIO SIGNAL
iPOD SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
D
E
F
G
H
1
23456
Figure 6-1: MAIN SCHEMATIC DIAGRAM (1/6)
6 – 2
Page 18
CD-DK890N
7
89101112
Figure 6-2: MAIN SCHEMATIC DIAGRAM (2/6)
6 – 3
Page 19
CD-DK890N
13
WZX11AW
1415161718
Figure 6-3: MAIN SCHEMATIC DIAGRAM (3/6)
6 – 4
Page 20
CD-DK890N
A
B
C
D
E
F
G
H
1
23456
Figure 6-4: MAIN SCHEMATIC DIAGRAM (4/6)
6 – 5
Page 21
CD-DK890N
7
89101112
Figure 6-5: MAIN SCHEMATIC DIAGRAM (5/6)
6 – 6
Page 22
WZX11AW
CD-DK890N
13
WZX21AW
1415161718
Figure 6-6: MAIN SCHEMATIC DIAGRAM (6/6)
6 – 7
Page 23
CD-DK890N
A
B
FM SIGNAL
MAIN PWB-A1
C
D
E
F
G
H
1
23456
Figure 6-7: POWER SCHEMATIC DIAGRAM (1/2)
6 – 8
Page 24
TO HEADPHONE
SECTION
CD-DK890N
CNP805
CMO36B
POWER PWB-A2
7
89101112
Figure 6-8: POWER SCHEMATIC DIAGRAM (2/2)
6 – 9
Page 25
CD-DK890N
A
B
iPOD TRANSIT PWB-B3
C
DISPLAY PWB-B1
D
E
TO IPOD TRANSIT PWB
F
G
H
AUDIO SIGNAL
1
23456
Figure 6-9: DISPLAY SCHEMATIC DIAGRAM (1/6)
6 – 10
Page 26
CD-DK890N
NC
7
89101112
NCNCNC
Figure 6-10: DISPLAY SCHEMATIC DIAGRAM (2/6)
6 – 11
Page 27
CD-DK890N
13
NC
1415161718
Figure 6-11: DISPLAY SCHEMATIC DIAGRAM (3/6)
6 – 12
Page 28
CD-DK890N
A
AUDIO SIGNAL
B
NC
NC
NC
NC
C
D
E
CNP701A
WZY21AW
AUDIO IN PWB-B2
TAPE MECHA SECTION
F
G
H
1
23456
Figure 6-12: DISPLAY SCHEMATIC DIAGRAM (4/6)
6 – 13
Page 29
CD-DK890N
NC
NCNCNC
7
89101112
Figure 6-13: DISPLAY SCHEMATIC DIAGRAM (5/6)
6 – 14
Page 30
CD-DK890N
NC
13
1415161718
Figure 6-14: DISPLAY SCHEMATIC DIAGRAM (6/6)
6 – 15
Page 31
CD-DK890N
A
B
iPOD PWB-C
iPOD SIGNAL
C
FROM
D
iPOD EXTERNAL DEVICE
E
F
G
H
1
23456
Figure 6-15: iPOD SCHEMATIC DIAGRAM (1/2)
6 – 16
Page 32
CD-DK890N
7
89101112
Figure 6-16: iPOD SCHEMATIC DIAGRAM (2/2)
6 – 17
Page 33
CD-DK890N
A
B
CD PWB-D
C
D
E
F
G
H
1
23456
Figure 6-17: CD SCHEMATIC DIAGRAM (1/6)
6 – 18
Page 34
CD SIGNAL
CD-DK890N
IC1
LC78690
NC
NC
NC
NC
NC
NC
7
89101112
Figure 6-18: CD SCHEMATIC DIAGRAM (2/6)
6 – 19
Page 35
CD-DK890N
13
1415161718
Figure 6-19: CD SCHEMATIC DIAGRAM (3/6)
6 – 20
Page 36
CD-DK890N
A
B
C
D
E
F
G
H
1
23456
Figure 6-20: CD SCHEMATIC DIAGRAM (4/6)
6 – 21
Page 37
CD-DK890N
NC
NC
NC
7
89101112
Figure 6-21: CD SCHEMATIC DIAGRAM (5/6)
6 – 22
Page 38
CD-DK890N
13
1415161718
Figure 6-22: CD SCHEMATIC DIAGRAM (6/6)
6 – 23
Page 39
CD-DK890N
[4] Charts Of Connecting Wires
FROM TAPE 2
RECORD / PLAYBACK HEAD
FROM TAPE 1
PLAYBACK HEAD
WH
BK
A
GR
WH
BK
GR
CNS101CNS102
123
123
CNP101
B
CNS601
RD
TO
CD PWB-D
(CNP3)
WH
GY
WH
GY
WH
GY
7654321
C
PKWHBK
1
234567
654321
7
CNP102
GRWHBK
BL
FROM
DISPLAY PWB-B1
(CNP701A)
BLGRWHBKPKWHBK
211111
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CNP701B
RD
GR
BL
GR
BL
GR
BL
Bi601
78 654321
Bi604
FFC303FFC701
CNP303
GY
WH
GY
WH
GY
WH
GY
RD
123456789
CNP603
CNP971
CNS02CNP501
VIDEO OUT
CNS603
WH
BK
PK
123
WH
GY
WH
GY
WH
GY
WH
RD
12345678
CNS604
WH
BK
Bi603
GY
PK
12 43
15
15
FW901
TO
MAIN PWB-A1
CNS971
BR
(CNP901)
RD
FAN MOTOR
WH
BL
WH
BL
WH
BL
WH
BL
RD
D
E
CNP901
Bi801
2345678910
1
15
FW901
15
FW901
FROM
AUDIO IN PWB-A1
(WTM901)
MAIN PWB-A1
(CNP701B)
FFC701
1921
20
(TERMINAL)
FRONT SPEAKER
12345678
CNP604B
iPOD TRANSIT
PWB-B3
TO
121
1
911
2345678
1012131415161718
CNP701A
FFC102
117
6
14
16
8910
12345
111213
7
1517
CNP102A
1234567
CNP704
CNS704
BL
RD
GRBLGRBLGR
FROM
MAIN PWB-A1
(CNP601)
F
CNS704
RD
WH
GY
WH
TO
GY
WH
(CNP704)
GY
7654321
iPOD TRANSIT PWB-B3
G
Bi704
78 654321
CNP703
123456789111013
12 14
CNP702
10
1
RD
234567
GR
YL
GR
YL
123456789
Bi702
GR
FFC703FFC702
H
1
23456
141110
TO
TAPE PWB ASS’Y
Figure 6-23: WIRING CONNECTION (1/2)
6 – 24
Page 40
CD-DK890N
15
TO
MAIN PWB-A1
(CNP901)
04
15
FW901
FROM
iPOD EXTERTAL
DEVICE
iPOD PWB-C
CNP101
1
ANTENNA
FM
GND
AM
CNP102
117
TUNER PACK
117
FFC102
FFC303
111
TO
PICK UP UNIT
FFC7
CNS601
RD
GRBLGRBLGR
FROM
MAIN PWB-A1
(CNP601)
BL
CD PWB-D
FFC703
123456
COLOR TABLE
GR
RD
BK
BL
GREEN
RED
BLACK
BLUE
YLYELLOW
WHWHITE
AC POWER SUPPLY CORD
AC 120V ~ 60Hz
7
89101112
Figure 6-24: WIRING CONNECTION (2/2)
PKPINK
GYGRAY
6 – 25
Page 41
CD-DK890N
[5] Wiring Side Of PWB
MAIN PWB-A1
1234567
123
BCE
20
19 21
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
ECB
ECB
BCE
BCE
12345678
1 2 3456789
12345
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.
Figure 6-25: WIRING SIDE OF MAIN PWB (TOP VIEW) (1/2)
12345678910
6 – 26
Page 42
CD-DK890N
12345678911
10
VIDEO OUT
123
12
(SOCKET)
RL914
ECB
ECB
FRONT SPEAKER
(TERMINAL)
Figure 6-26: WIRING SIDE OF MAIN PWB (TOP VIEW) (2/2)
6 – 27
Page 43
CD-DK890N
MAIN PWB-A1
IC602
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.
Figure 6-27: WIRING SIDE OF MAIN PWB (BOTTOM VIEW) (1/2)
6 – 28
Page 44
CD-DK890N
Figure 6-28: WIRING SIDE OF MAIN PWB (BOTTOM VIEW) (2/2)
6 – 29
Page 45
CD-DK890N
POWER PWB-A2
12 3 4 5 612345678910
D801
D802
16171415
BCE
BCE
BCE
12
11
8910
13
Lead-free solder indication
Lead-free solder is used in the POWER PWB.
Refer to "Precautions for handling lead-free solder"
for instructions and precautions.
TF801
1
2
PT801
POWER TRANSFORMER (MAIN)
1
2
3
4
3
9
8
7
6
5
Figure 6-29: WIRING SIDE OF POWER PWB (TOP VIEW)
6 – 30
Page 46
-MEMO-
CD-DK890N
6 – 31
Page 47
CD-DK890N
DISPLAY PWB-B1
13579111315171921
2468101214161820
12345678
Lead-free solder indication
Lead-free solder is used in the DISPLAY PWB.
Refer to "Precautions for handling lead-free solder" for instructions
and precautions.
12345678910111213
14
45678910
Figure 6-30: WIRING SIDE OF DISPLAY PWB (TOP VIEW) (1/2)
6 – 32
Page 48
CD-DK890N
BCE
123456789
10
BCE
BCE
654321
7
Figure 6-31: WIRING SIDE OF DISPLAY PWB (TOP VIEW) (2/2)
6 – 33
Page 49
CD-DK890N
DISPLAY PWB-B1
Lead-free solder indication
Lead-free solder is used in the DISPLAY PWB.
Refer to "Precautions for handling lead-free solder" for instructions
and precautions.
Figure 6-32: WIRING SIDE OF DISPLAY PWB (BOTTOM VIEW) (1/2)
6 – 34
Page 50
CD-DK890N
Figure 6-33: WIRING SIDE OF DISPLAY PWB (BOTTOM VIEW) (2/2)
6 – 35
Page 51
CD-DK890N
AUDIO IN PWB-B2
HEADPHONE
SOCKET
AUDIO IN
SOCKET
iPOD TRANSIT PWB-B3
1234
123456781234567
12345678910111213141517
16
Lead-free solder indication
Lead-free solder is used in the AUDIO IN, iPOD TRANSIT PWB.
Refer to "Precautions for handling lead-free solder"
for instructions and precautions.
Figure 6-34: WIRING SIDE OF AUDIO IN & iPOD TRANSIT PWB (TOP VIEW)
6 – 36
Page 52
AUDIO IN PWB-B2
CD-DK890N
Lead-free solder indication
Lead-free solder is used in the AUDIO IN PWB.
Refer to "Precautions for handling lead-free solder"
for instructions and precautions.
Figure 6-35: WIRING SIDE OF AUDIO IN PWB (BOTTOM VIEW)
6 – 37
Page 53
CD-DK890N
iPOD PWB-C
Lead-free solder indication
Lead-free solder is used in the iPOD PWB.
Refer to "Precautions for handling lead-free solder"
for instructions and precautions.
Figure 6-36: WIRING SIDE OF iPOD PWB (TOP VIEW)
6 – 38
Page 54
-MEMO-
CD-DK890N
6 – 39
Page 55
CD-DK890N
P
CD PWB-D
WIRE_A
C27
C22
C36
C8
C42
C6
R7
R2
C20
C7
R5
R3
C4
R6
CNP1
C5
R1
R4
C25
C1
13579111315
246810121416
R23
R13
R24
C3
R10
R25
Lead-free solder indication
Lead-free solder is used in the CD PWB.
Refer to "Precautions for handling lead-free solder" for instructions
and precautions.
C46
R17
C41
C44
C43
C29
C35
R54
XL1
CNP3
R53
R66
R35
R40
R41
R42
C11
R29
CN
Figure 6-37: WIRING SIDE OF CD PWB (TOP VIEW) (1/2)
6 – 40
Page 56
CD-DK890N
13
24
C1
R23
R13
R24
R35
C3
R10
R25
R12
R9
R27R11
WIRE_A’
Q2
C58
R20
R19
R21
R22
R26
123456
C57
CNP2
J29
C10
CNP4
R62
40
1
2
9
CNP7
R57
Figure 6-38: WIRING SIDE OF CD PWB (TOP VIEW) (2/2)
6 – 41
Page 57
CD-DK890N
CD PWB-D
R8
JP10
R28
JP9
R61
R60
R59
R58
JP1
IC2
JP12
JP21
JP11
R63
C21
R33
R34
C9
C51
R64
C53
C54
C23
C24
JP2
C31
R32
C50
C52
R36
R55
JP3
R37
C26
TP5
JP17
JP14
R38
R15
R14
JP7
JP8
C55
C56
R39
Q4
C2
JP15
R44
C33
R43
JP6
R68
R67
C37
JP20
R65
JP16
D1
C18
TP4
JP18
IC1
TP3
R46
C34
R45
C32
JP19
C28
TP1
1
C17
C16
C15
C59
TP2
FB2
R47
JP13
C49
Q1
C47
R16
R48
C13
C12
R31
C14
C48
R30
C19
C30
C40
FB1
Q3
R18
R52
C45
R49
R50R51
Lead-free solder indication
Lead-free solder is used in the CD PWB.
Refer to "Precautions for handling lead-free solder" for instructions
and precautions.
Figure 6-39: WIRING SIDE OF CD PWB (BOTTOM VIEW)
6 – 42
Page 58
CD-DK890N
CHAPTER 7. FLOWCHART
[1] Troubleshooting
1. When the CD does not function
The CD section may not operate when the objective lens of the optical pickup is dirty. Clean the objective lens, and
check the playback operation. When this section does not operate even after the above step is taken, check the following items.
Remove the cabinet and follow the trouble shooting instructions.
"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser
pickup lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."
Turn the power off.
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the
1.
brush on the CD cleaner disc which has the mark next to it.
Place the CD cleaner disc onto the CD disc tray with the brush side down, then
2.
press the play button.
You will hear music for about 20 seconds and the CD player will automatically stop.
3.
If it still play continuously, press the stop button.
CAUTION
The CD lens cleaner should be effective for 30-50 operations, however if the
brushes become worn out earlier then please replace the cleaner disc.
If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft
cloth.
Do not drink the cleaner fluid or allow it contact with the eyes. In the event of this
happening then drink and / or rinse with clean water and seek medical advice.
The CD cleaner disc must not be used on car CD players or on computer CD-ROM
drives.
All rights reserved. Unauthorized duplicating, broadcasting and renting this product
is prohibited by law.
2. When a CD cannot be played
Cleaning fluid
Cleaner disc
2.1. Pressing the CD operation key is accepted, but playback does not occur.
1) Focus-HF system check
2) Tracking system check
3) Spin system check
4) PLL system check
7 – 1
Page 59
CD-DK890N
(1) Focus-RF system check.
Although a CD is inserted and the cover is closed,
"NO DISC" is displayed.
Press the Tray1 CD Eject Button without inserting a disc, and try
starting the playback operation.
1
IC1
22
FDO
2
IC1
1. Does the pickup move to the PICKUP-IN Switch (NSW1)
position ?
Yes
2. Does the focus (lens) move up and down ?
(Waveform drawing Figure 1)
Yes
3. Is the laser lit ?NoCheck the laser diode driver Q1 peripheral circuit.
Yes
4. Is the turntable rotating ?NoSpindle motor (NM1).
When a disc is loaded, start playback operation.
NoSled motor (NM2).
NoCheck the focus peripheral circuit.
23
TDO
Figure 1
1. Is focus servo activated ?
(Waveform drawing Figure 2)
Yes
2. Is the RF waveform normal ?
(Waveform drawing Figure 3)
1
IC1
3
IC1
22
16
FDO
TE
Figure 2
NoPins 5~9, 11, 18 19 and 22 on IC1
Check the laser diode driver Q1 peripheral circuit.
NoIf the level is not normal.
4
IC1
2
RFOUT
Figure 3
7 – 2
Page 60
CD-DK890N
(2) Focus-RF system check.
Check the TE waveform at pin 16 on IC1.
If the waveform shown in Figure 4 appears and soon after NO
DISC appears ?
No
"Initialization" is possible, but play is not possible ?
No
"Initialization" is not possible.Data cannot be read. Check the VCO-PLL (Pin26~30 on IC1)
Yes
Yes
The tracking servo is not activated.
Check the peripheral circuits at pins 15, 16 and 23 on IC1,
and FFC1.
A normal jump operation cannot be completed or the beginning of the track cannot be found.
Check the around pin 23 on IC1.
system.
16
TE
3
IC1
4
2
IC1
RFOUT
Figure 4
(3) Spin system check.
Press the OPEN/CLOSE switch without inserting a disc, and
then try starting the play operation.
1. The turntable rotates a little ?
(Waveform drawing Figure 5)
No
2. The turntable doesn't rotate.Check around pin 25 on IC1, pins 1 and 2 on CNP2.
YesThe spin driver circuit is OK.
7 – 3
1
IC1
5
IC1
22
25
FDO
SPDO
Figure 5
Page 61
CD-DK890N
(4) PLL system check.
When a disc is loaded, start play operation.
The RF waveform is normal, but the TOC data cannot be read.
Check the PDOUT waveform. (Figure 6)
6
IC1
7
IC1
1
IC1
28
27
22
PDOUT 0
PDOUT 1
FDO
Check around pins 26~30 on IC1.
Figure 6
7 – 4
Page 62
CD-DK890N
CHAPTER 8. OTHERS
[1] Function Table Of IC
IC1 VHiLC78690E-1: CD Servo (LC78690E) (1/2)
Pin No.Terminal NameInput/OutputSetting in ResetFunction
1EFMINInputINPUTRF signal input pin.
2RFOUTOutputUNSTABLERF signal output pin.
3LPFOutputUNSTABLERF signal DC level detection. LPF capacitor connection pin.
4PHLPFOutputUNSTABLELPF capacitor pin for detection problem.
5AINInputINPUTA signal input pin.
6CINInputINPUTC signal input pin.
7BINInputINPUTB signal input pin.
8DINInputINPUTD signal input pin.
9FECOutputUNSTABLEFE signal LPF capacitor connection pin.
10*RFMONOutputUNSTABLEBuilt in analog signal for monitoring LSI pin.
11VREFOutputAVDD/2VREF voltage output pin.
12JITTCOutputUNSTABLEJitter detection capacitor connection pin.
13EINInputINPUTE signal input pin.
14FINInputINPUTF signal input pin.
15TECOutputUNSTABLETE signal LPF capacitor connection pin.
16TEOutputUNSTABLETE signal output pin.
17TEINInputINPUTTES signal generation TE signal input pin.
18LDDOutputUNSTABLELaser power control signal output pin.
19LDSInputINPUTLaser power control signal input pin.
20AVSS——Analog GND pin. This pin must always be connected to 0V.
21AVDD——Analog power supply pin.
22FDOOutputAVDD/2Focus control output pin. D/A converter output.
23TDOOutputAVDD/2Tracking control output pin. D/A converter output.
24SLDOOutputAVDD/2SLED control output pin. D/A converter output.
25SPDOOutputAVDD/2SPINDLE control output pin. D/A converter output.
26VVSS1——For use
27PDOUT1OutputUNSTABLEPhase comparison output pin 1 to control built in VCO.
28PDOUT0OutputUNSTABLEPhase comparison output pin 0 to control built in VCO.
29PCKISTInputINPUTResistor connection pin to set current for PDOUT 0 and 1 output.
30VVDD1——Built_in VCO power supply pin 1.
by the
EFM
PLL
Circuit
Built-in VCO GND pin. This pin must always be connected to 0V.
31*DMUTEBOutputLDMUTEB output pin.
32PUINInput/OutputINPUTPUIN input pin. (built-in pull-up resistor)
33*DEFECTOutputLDEFECT signal output pin.
34*FSEQOutputLDetected sync signal output. This signal is high when the sync signal
detected from the EFM signal and the internally generated sync signal
agree.
35*C2FOutputLC2 error flag monitor output pin.
36DVDD——Digital power supply pin.
37DVSS——Digital GND pin. This pin must always be connected to 0V.
38DVDD1.8OutputHSupply voltage connect to capacitor for digital circuit.
39VDD3——Built-in VCO power supply pin 3.
40VVSS3——Built-in VCO GND pin 3. This pin must always be connected to 0V.
41DVDD——Digital power supply pin.
42DVSS——Digital GND pin. This pin must always be connected to 0V.
43CEInputINPUTMicro44CLInputINPUTData transfer clock input pin.
45DIInputINPUTData input pin.
46DOOutputHData output pin. (TRI-State Output)
47RESBInput—Reset input pin for LSI. This pin must set to low briefly after power is
48INTB0OutputHInterrupt signal output pin 0. (SERVO Section)
49INTB1OutputHInterrupt signal output pin 1. (DECODER Section)
50ICONT2Input/OutputINPUTGeneral Purpose I/O pin 2 Controlled by command from the microproces-
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Com-
puter
Inter-
face
applied.
Chip enable signal input pin.
sor. Any of these that are unused must be
either set up as input pin ports and connected
to 0V, or set up as output pin ports and left
open.
8 – 1
Page 63
CD-DK890N
IC1 VHiLC78690E-1: CD Servo (LC78690E) (2/2)
Pin No.Terminal NameInput/OutputSetting in ResetFunction
51CONT1Input/OutputINPUTGeneral Purpose I/O pin 1Controlled by command from the microproces-
sor. Any of these that are unused must be
52CONT0Input/OutputINPUTGeneral Purpose I/O pin
0
53TEST0InputLTest input pin 1. This pin must always be connected to 0V.
54STREQInput/OutputINPUTStream data request output pin.
55STCKInput/OutputINPUTStream data bit clock usage input pin.
56STDATAInput/OutputINPUTStream data input pin.
57TEST1InputLTest input pin 0. This pin must always be connected to 0V.
58*DATAOutputLLeft/Right clock output pin.
59*DATACKOutputLBit clock output pin.
60*LRSYOutputLLeft/Right channel data output pin.
61VVDD2——For use by
62VPREF2InputINPUTBuilt-in VCO control oscillator range setting input pin.
63VCOC2InputINPUTBuilt-in VCO control voltage setting input pin.
64VPDOUT2OutputUNSTABLEBuilt-in VCO control output pin 2.
65VVSS2——Built-in VCO GND pin. This pin must always be connected to
66DVDD1.8OutputHSupply voltage connect to condenser for digital circuit.
67DVSS——Digital GND pin. This pin must always be connected to 0V.
68DVDD——Digital power supply pin.
69*DOUTOutputInputDigital output pin. EIAJ format.
70*AMUTEBOutputLGAMUTEB output pin.
71XVSS——Digital GND pin. This pin must always be connected to 0V.
72XOUTOutputOSCILLATINGCrystal
73XINInputOSCILLATING
74XVDD——Digital power supply pin.
75LCHOOutputLRVDD/2D/A con76LRVDD——LR channel power supply pin.
77LRVSS——LR channel GND pin. This pin must always be connected to
78RCHOOutputLRVDD/2Right channel input supply pin.
79AVDD——Analog power supply pin.
80SLCO——Slice level control output pin.
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
the EFM
PLL Circuit
oscillator
verter
Built-in VCO power supply pin 2.
0V.
Connections for a 16.9344 MHZ oscillator element.
Left channel output supply pin.
0V.
either set up as input pin ports and connected
to 0V, or set up as output pin ports and left
open.
13-16R1-4Input signal pin.
17RSEL0Input selector output pin.
18RINVolume + equalizer output pin
19RTRETreble band filter comprising capaci-
tor and resistor connection pin.
20RBASSBass band filter comprising capaci-
tor and resistor connection pin.
21ROUTBass band filter comprising capaci-
tor and resistor connection pin and
bass/treble output pin.
22VREF0.5x VDD voltage generation block
23VDDSupply pin
24CLKSerial data and clock input pin for
LOUT
LTRE
LBASS
for analog ground. Capacitor of several 10µF to be connected between
VREF and AWSS (VSS) as a countermeasure against power ripple.
control.
45678
L4
L3
L2
L1
R1
R2
R3
R4
9
10
11
12
13
14
15
16
CD
Tuner
Ta pe
Video
1817
CONTROL
CIRCUIT
CONTROL
CIRCUIT
CONTROL
CIRCUIT
19
LVref
CCB
INTERFACE
RVref
2021
3
2
1
24
23
22
VSS
CE
DI
CLK
VDD
VREF
RIN
RSEL0
Figure 8-3: BLOCK DIAGRAM OF IC
RTRE
8 – 6
RBASS
ROUT
Page 68
IC851 VHIAN80T53/-1: Multi Regulator (AN80T53)
Pin No.Terminal NameFunction
1REG4 Output5.1 V power supply with a minimum peak out current of 1200 mA.
2REG3 Output13 V power supply with a minimum peak out current of 1350 mA.
3VCCConnected to Power supplies.
4GNDConnected to the IC substrate.
5MODE 1REG1, REG2,REG3 and REG4 outputs are turned ON when this pin is 5 V.
6REG2 Output10 V power supply with a minimum peak out current of 800 mA.
7REG1 Output8.5 V power supply with a minimum peak out current of 700 mA.
P3 P2 P1 12G 11G 10G 9G 8G 7G 6G 5G 4G 3G NX NX 2G 1G NP F1 F1
8 – 8
Page 70
PARTS GUIDE
MINI COMPONENT SYSTEM
CD-DK890N
[1]INTEGRATED CIRCUITS
[2]TRANSISTORS
[3]DIODES
[4]TRANSFORMERS
[5]COILS
MODEL
CD-DK890N Mini Component System consisting of
CD-DK890N (main unit), CP-DK890N (speaker system).
CONTENTS
[9]OTHER CIRCUITRY PARTS
[10] CABINET PARTS /
[11] SPEAKER BOX PARTS
[12] ACCESSORIES / PACKING
CD-DK890N
CD MECHANISM PARTS
PARTS
[6]CRYSTALS / VIBRATORS
[7]CAPACITORS
[8]RESISTORS
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
[13] P.W.B. ASSEMBLY
(Not Replacement Item)
[14] OTHER SERVICE PARTS
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
Page 71
CD-DK890N
NO.PARTS CODE
PRICE
RANK
NEW
MARK
PAR T
RANK
DESCRIPTION
[1] INTEGRATED CIRCUITS
iC1 VHiLC78690E-1BECD Servo
iC2 VHiLA6261//-1ANFocus/Tracking/Spin/Sled Driver
iC101 VHI341S2160-1AMPlayback and Record Playback Amp[Use in IPOD PWB-C]
iC101 VHIAN7345K/-1AMPre Amplifier [Use in MAIN PWB-A1]
iC601 VHILC75341M-1AMAudio Processor
iC602 VHIBA3121F+-1ALGround Isolation
iC701 RH-IXA201AWZZAZSystem Microcomputer, iXA201AW
iC702 VHIBU2092F/-1AMInput / Output Expander
iC851 VHiAN80T53/-1ALVoltage Regulator
iC852 VHIKIA7805AP1AFVoltage Regulator
iC854 VHiKiA78L05-1AFVoltage Regulator
iC892 VHIAP2213M33EAEVoltage Regulator
iC901 VHiSTK41241-1BAPower Amplifier
[2] TRANSISTORS
Q1 VSKTA1504Y/-1ABSilicon,PNP,KTA1504 Y
Q2 VSKTA1271Y/-1ACSilicon,PNP,KTA1271 Y
Q3 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q4 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q100 VSKRA107S//-1ABDigital,PNP,KRA107 S
Q101 VSKTC3200GR-1ACSilicon,NPN,KTC3200 GR
Q102 VSKTC3200GR-1ACSilicon,NPN,KTC3200 GR
Q103 VSKTC3200GR-1ACSilicon,NPN,KTC3200 GR
Q104 VSKTC3200GR-1ACSilicon,NPN,KTC3200 GR
Q105 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q106 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q107 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q108 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q109 VSKTA1504Y/-1ABSilicon,PNP,KTA1504 Y
Q110 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q111 VSKTC3203Y/-1ACSilicon,NPN,KTC3203 Y
Q112 VSKTA1504Y/-1ABSilicon,PNP,KTA1504 Y
Q113 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q114 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q603 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q604 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q606 VSKRC107S//-1ABDigital,NPN,KRC107 S
Q607 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q608 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q609 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q610 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q665 VSKRA107S//-1ABDigital,PNP,KRA107 S
Q666 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q667 VSKTA1504GR-1ABSilicon,PNP,KTA1504 GR
Q668 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q703 VSKRA107S//-1ABDigital,PNP,KRA107 S
Q704 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q705 VSKRA107S//-1ABDigital,PNP,KRA107 S
Q706 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q707 VSKRA107S//-1ABDigital,PNP,KRA107 S
Q708 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q709 VSKTA1273Y/-1AESilicon,PNP,KTA1273 Y
Q710 VSKTA1273Y/-1AESilicon,PNP,KTA1273 Y
Q711 VSKTA1273Y/-1AESilicon,PNP,KTA1273 Y
Q712 VSKRC102S//-1ABDigital,NPN,KRC102 S
Q713 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q801 VSKTA1274Y/-1AESilicon,PNP,KTA1274 Y
Q841 VSKTC3199GR-1ACSilicon,NPN,KTC3199 GR
Q885 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q886 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q891 VSKRC104S//-1ACDigital,NPN,KRC104 S
Q901 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q902 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q903 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q904 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q905 VSKTC3199GR-1AB
906 VSKTC3203Y/-1ACSilicon,NPN,KTC3203 Y
Q
Q908 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
Q909 VSKTC3875GR-1ABSilicon,NPN,KTC3875 GR
No part of this publication may be reproduced,
stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without
prior written permission of the publisher.
SHARP CORPORATION
Sharp-Roxy Corporation
Sungai Petani, Kedah,
Malaysia
Printed in Malaysia
A0807-210MX•RR•M
SC
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