ICF-CDK70 - Sony Audio Service Manual (repair manual)

icf-cdk70 service manual
Model
ICF-CDK70
Pages
50
Size
4.16 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-cdk70.pdf
Date

Read Sony ICF-CDK70 Service Manual online

SERVICE MANUAL
Published by Sony Techno Create Corporation
Sony Corporation
Personal Audio Division
ICF-CDK70
SPECIFICATIONS
FM/AM CD KITCHEN CLOCK RADIO
9-887-533-02
2007B05-1
© 
2007.02
US Model
Canadian Model
Ver. 1.1  2007.02
Model Name Using Similar Mechanism
HCD-EC50
CD Mechanism Type
DLM3A23-11
Optical Pick-up Block
KSM-213CCP
CD player section
System: Compact disc digital audio system
Laser diode properties:
Emission duration: Continuous
Laser output: Less than 44.6 µW
(This output is the value measured at a distance of
about 200 mm from the objective lens surface on
an optical pick-up block with 7 mm aperture.)
Number of channels: 2
Frequency response: 20 – 20 000 Hz
+1
–2
dB
Wow and flutter: Below measurable limit
Radio section
Frequency range:
FM: 87.5 – 108 MHz
AM: 530 – 1 710 kHz
Antennas:
FM: AC power cord
AM: Built-in ferrite bar antenna
General
Time display: 12-hour system
Speaker: 66 mm (2
5
8
inches) diam., 6 Ω, cone type
(2)
Input:
Audio In jack (stereo minijack): minimum input
level 245 mV, impedance 47 kΩ
Power outputs: 
1.4 W + 1.4 W (at 6 Ω, 10 % harmonic distortion)
Power requirements: 120 V AC, 60 Hz
Dimensions:
Approx. 362
s 105 s 319 mm (w/h/d)
(Approx. 14
1
4
s 4
1
5
s 12
5
8
inches)
incl. projecting parts and controls
Mass: Approx. 3.2 kg (7 lb 1 oz)
Supplied accessories:
mounting screws (M5 screw) (4)
template (1)
spacers (4)
cord clamp (1)
remote commander (1)
audio cable (1)
digital music player holder (1)
Design and specifications are subject to change
without notice.
ICF-CDK70
2
1. SERVICING 
NOTES
  ...............................................   3
2. GENERAL
  ..................................................................   4
3. DISASSEMBLY
3-1.   Disassembly Flow  ..........................................................   5
3-2.   Cabinet (Upper) Section .................................................   5
3-3.   Mechanism Deck (DLM3A23-11)
 
(When TRAY carries out movable.) ...............................   6
3-4.   Mechanism Deck (DLM3A23-11)
 
(When TRAY does not carry out movable.) ...................   7
3-5.   Cabinet (Front) Section ...................................................   8
3-6.   CD Lid Assy ....................................................................   8
3-7.   Optical Pick-up Block (KSM-213CCP) .........................   9
3-8.   How To Pull Out Tray .....................................................   10
3-9.   Belt (DLM3A) ................................................................   10
4. TEST 
MODE 
 .............................................................   11
5. ELECTRICAL 
ADJUSTMENTS 
 .........................   13
6. DIAGRAMS
6-1.  Printed Wiring Board - CD Board - ................................   18
6-2.  Schematic Diagram - CD Board - ...................................   19
6-3.  Printed Wiring Board - TU Board - ................................   20
6-4.  Schematic Diagram - TU Board - ...................................   21
6-5.  Schematic Diagram - MAIN Board (1/2) - .....................   22
6-6.  Schematic Diagram - MAIN Board (2/2) -  ....................   23
6-7.  Printed Wiring Board - MAIN Board - ...........................   24
6-8.  Schematic Diagram - PANEL/KEY Section - ................   25
6-9.  Printed Wiring Boards - PANEL Section - .....................   26
6-10.  Printed Wiring Boards - KEY Section - ..........................   27
6-11.  Printed Wiring Boards - POWER SUPPLY Section - ....   28
6-12.  Schematic Diagram - POWER SUPPLY Section - .........   29
7. EXPLODED 
VIEWS
7-1.  Cabinet (Upper) Section .................................................   35
7-2.  Cabinet (Front) Section ...................................................   36
7-3.  Cabinet (Lower) Section .................................................   37
7-4. CD 
Lid 
Assy 
Section 
.......................................................  38
7-5.  CD Mechanism Deck Section (DLM3A23-11) ..............   39
8. 
ELECTRICAL PARTS LIST
  .................................   40
TABLE OF CONTENTS
Notes on chip component replacement
  •  Never reuse a disconnected chip component.
  •  Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SAFETY  CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, 
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE  TEST
The AC leakage from any exposed metal part to earth ground and 
from all exposed metal parts to any exposed metal part having a 
return to chassis, must not exceed 0.5 mA (500 microamperes.). 
Leakage current can be measured by any one of three methods.
1.  A commercial leakage tester, such as the Simpson 229 or RCA 
WT-540A. Follow the manufacturers’ instructions to use these 
instruments.
2.  A battery-operated AC milliammeter. The Data Precision 245 
digital multimeter is suitable for this job.
3.  Measuring the voltage drop across a resistor by means of a 
VOM or battery-operated AC voltmeter. The “limit” indication 
is 0.75 V, so analog meters must have an accurate low-voltage 
scale. The Simpson 250 and Sanwa SH-63Trd are examples 
of a passive VOM that is suitable. Nearly all battery operated 
digital multimeters that have a 2 V AC range are suitable.  (See 
Fig. A)
Fig. A.  Using an AC voltmeter to check AC leakage.
1.5 k
0.15 µF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
SAFETY-RELATED COMPONET WARNING!
COMPONENTS  IDENTIFIED  BY  MARK 
0 OR  DOTTED  LINE  
WITH  MARK 
0 ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS 
 
WHOSE  PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  
MANUAL  OR  IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
ATTENTION  AU  COMPOSANT  AYANT  RAPPORT  
À  LA  SÉCURITÉ!
LES  COMPOSANTS  IDENTIFIÉS  PAR  UNE  MARQUE  
0 SUR  
LES  DIAGRAMMES  SCHÉMATIQUES  ET  LA  LISTE  DES  
PIÈCES  SONT  CRITIQUES  POUR  LA  SÉCURITÉ  DE  FONC-
TIONNEMENT.  NE  REMPLACER  CES  COM-  POSANTS  QUE  
PAR  DES  PIÈCES  SONY  DONT  LES  NUMÉROS  SONT  DON-
NÉS  DANS  CE  MANUEL  OU  DANS  LES  SUPPLÉMENTS  
PUBLIÉS  PAR  SONY.
CAUTION
Use of controls or adjustments or performance of procedures other than 
those specifi ed herein may result in hazardous radiation exposure.
ICF-CDK70
3
SECTION  1
SERVICING  NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP 
BLOCK   OR  BASE  UNIT
The laser diode in the optical pick-up block may suffer electrostat-
ic break-down because of the potential difference generated by the 
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also 
use the procedure in the printed matter which is included in the 
repair parts.
The fl exible board is easily damaged and should be handled with 
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused 
on the disc refl ective surface by the objective lens in the optical 
pickup block. Therefore, when checking the laser diode emission, 
observe from more than 30 cm away from the objective lens.
UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with 
the lead free mark due to their particular size)
 : LEAD  FREE  MARK
Unleaded solder has the following characteristics.
  •  Unleaded solder melts at a temperature about 40 °C higher 
than ordinary solder.
    Ordinary soldering irons can be used but the iron tip has to be 
applied to the solder joint for a slightly longer time.
    Soldering irons using a temperature regulator should be set to 
about 350 °C.
Caution:  The printed pattern (copper foil) may peel away if the 
heated tip is applied for too long, so be careful!
  •   Strong viscosity
    Unleaded solder is more viscou-s (sticky, less prone to fl ow) 
than ordinary solder so use caution not to let solder bridges 
occur such as on IC pins, etc.
  •   Usable with ordinary solder
    It is best to use only unleaded solder but unleaded solder may 
also be added to ordinary solder.
CHUCK  PLATE  JIG  ON  REPAIRING
On repairing CD section, playing a disc without the CD lid, use 
Chuck Plate Jig.
  •  Code number of Chuck Plate Jig: X-4918-255-1
ICF-CDK70
4
SECTION  2
GENERAL
This section is extracted 
from instruction manual.
Features
3-CD changer
CD-R/RW playback function
Bass Reflex sound system
FM/AM Digital Tuner with 30 station presets
Audio In jack for digital music player connectivity
Easy-to-set countdown timer for cooking
Digital music player holder and cable (supplied)
Magnetic remote commander (supplied)
Installing the Unit Under a 
Cabinet
(See Fig.
)
Caution
Please read the following before
installing the unit
Due to its heavy weight, the unit should be installed
with great care.
Installation of the unit requires two persons.
Use tools carefully while installing of the unit.
Be sure that the cabinet that is used is sturdy enough
to support the weight of the unit.
To reduce the risk of fire, do not place any heating or
cooking appliance beneath this unit.
Install the unit so that its AC power cord can be
connected directly to a wall outlet. Do not use a
converter or extension cord.
Be sure that the AC power cord has no slack during
use of the unit, since the cord acts as an FM wire
antenna. If the AC power cord has some slack, wind
it around the cord hook so as to eliminate the slack.
The unit has a built-in ferrite bar antenna for AM
radio reception. Confirm that AM reception is
acceptable before finally attaching the unit.
Install the unit as far as possible from sources of
noise (for example, a refrigerator, microwave oven or
fluorescent lamp).
This unit is not waterproof. Install it where it will
not be exposed to splashing by water, as this may
damage the unit.
To reduce the risk of fire or electric shock, do not
touch the AC power cord with wet hands.
Never place objects between the top of the unit and
the bottom of the cabinet. This could cause the unit
to fall.
Make sure the unit’s four screws are fastened tightly.
After installing the unit, do not pull down on it or
hang something heavy on it.
1
Decide on the installation location and
orientation of the unit based on the best
reception that is possible (see “Improving
the Reception”).
2
Mark the position of the 4 holes by using
the supplied template. Use a drill to make
the holes (size 6.5 mm diam.,
9
/
32
inch). (See
Fig.
-)
3
When the cabinet door overhangs the shelf
and obstructs the unit, you can adjust the
unit/shelf height.
First set the L mark to the dot which
becomes the lowest position, then you
can adjust the height in 4 steps (H
L)
by turning the spacer counterclockwise
(See Fig.
-). The unit can be installed
without the spacer.
4
Install the unit with the supplied mounting
screws. (See Fig.
-)
Note
If you lose the supplied screws, please purchase #10 or
M5 screws.
Installing the Batteries
into the Remote
Commander
(See Fig.
-
)
Insert two size AAA (R03) batteries (not supplied).
When to replace the batteries
With normal use, the batteries should last for about
six months. When the remote no longer operates the
CD kitchen clock radio, replace all the batteries with
new ones.
Notes
Do not charge the dry batteries.
If you do not intend to use the remote for a long
time, remove the batteries to prevent damage by
leakage and corrosion.
Use of Magnet (See Fig.
-
)
A magnet is provided on the back of the remote so
that it can be attached a refrigerator or other iron
surface.
However, do not operate the remote while it is
attached in this manner.
Note
Do not place the remote commander near magnetic
cards such as credit cards.
Setting the Clock
1
Plug in the unit.
“AM 12:00” flashes in the display.
2
Hold down CLOCK/D.S.T until a short beep
sounds.
The hour starts to flash in the display.
3
Turn the TIMER jog dial towards or
– repeatedly until the correct hour appears
in the display.
4
Press TIMER once.
The minute flashes.
5
Repeat steps 3 and 4 to set the minute, and
press TIMER.
Two short beeps sound and the seconds start
incrementing from zero.
12-hour system: “AM 12:00” = midnight
In step 4 and 5, you can press CLOCK/D.S.T instead
of TIMER.
To the display to summer time 
(daylight saving time)
Press CLOCK/D.S.T.
“ ” is displayed and the time indication changes to
summer time.
To deactivate the summer time function, press
CLOCK/D.S.T again.
H
L
AC power cord
Cord clamp
Template
Spacer
L (Low)
Dot
Mounting screw
CD
 button have a tactile dot.
There is a tactile dot 
next to VOLUME +.
Turn
Push
TIMER indicator
Size AAA 
(R03)
 2
The number 5 and the VOL + 
buttons have a tactile dot.
Magnet
Page of 50
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Here you can read online and download Sony ICF-CDK70 Service Manual in PDF. ICF-CDK70 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony ICF-CDK70 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.