DOWNLOAD Sony ICF-CDK50 Service Manual ↓ Size: 3.82 MB | Pages: 42 in PDF or view online for FREE

Model
ICF-CDK50
Pages
42
Size
3.82 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-cdk50.pdf
Date

Sony ICF-CDK50 Service Manual ▷ View online

SERVICE MANUAL
Published by Sony Techno Create Corporation
Sony Corporation
Audio&Video Business Group
ICF-CDK50
FM/AM CD KITCHEN CLOCK RADIO
9-887-979-02
2008I00-1
© 
2008.09
US Model
Canadian Model
AEP Model
Ver. 1.1  2008.09
SPECIFICATIONS
Model Name Using Similar Optical Pick-up Block
ZS-BT1/S50CP
Optical Pick-up Block Type
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
the 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 (US and Canadian models): 
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 (US, Canadian models)
24-hour system (AEP model)
Speaker: 66 mm (2
5
8
 inches) diam., 4 Ω, cone type (2)
Input:
Built-in audio cable with stereo miniplug (1):
minimum input level 245 mV, impedance 47 kΩ
Power outputs: 
1.9 W + 1.9 W (at 4 Ω, 10 % harmonic distortion)
Power requirements: 120 V AC, 60 Hz
 (US and Canadian models)
 220 – 230 V AC, 50 Hz
 (AEP model)
For Power backup: 3 V DC, one CR2032 battery
Dimensions:
Approx. 350 ×  85 ×  300 mm (w/h/d)
(Approx. 13 
7
8
×   3 
3
8
×  11 
7
8
 inches)
incl. projecting parts and controls
Mass: Approx. 2.7 kg (6 lb 1 oz)
Supplied accessories:
mounting screws (M5 screw) (4)
template (1)
spacers (4)
cord clamp (1)
remote commander (1)
digital music player holder (1)
Design and specifications are subject to change
without notice.
Frequency range (AEP model): 
Band
Frequency range
Channel step
FM
87.5-108 MHz
0.05 MHz
AM
531-1 611 kHz
530-1 610 kHz
9 kHz
10 kHz
ICF-CDK50
2
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
Ω
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.
WARNING
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
1. 
SERVICING  NOTES
  .............................................   3
2. GENERAL
  ..................................................................   4
3. DISASSEMBLY
3-1. Disassembly 
Flow 
...........................................................   6
3-2. Cabinet 
(Upper) 
..............................................................   6
3-3. CD 
Mechanism 
Deck 
......................................................   7
3-4.  Cabinet (Front) Block .....................................................   7
3-5. MAIN 
Board 
...................................................................   8
3-6. Belt 
..................................................................................   8
3-7. CD 
Block 
........................................................................   9
3-8.  Optical Pick-up Block (KSM-213CCP) .........................   9
4. 
TEST  MODE 
 ............................................................   10
5. ELECTRICAL 
 
ADJUSTMENTS 
 ........................   12
6. DIAGRAMS
6-1.  Printed Wiring Board - CD Board - ................................   16
6-2.  Schematic Diagram - CD Board - ...................................   17
6-3.  Printed Wiring Board - TU Board - ................................   18
6-4.  Schematic Diagram - TU Board - ...................................   19
6-5.  Printed Wiring Board - MOTOR Board - .......................   20
6-6.  Schematic Diagram - MOTOR Board - ..........................   20
6-7.  Printed Wiring Boards - MAIN Section - .......................   21
6-8.  Schematic Diagram - MAIN Section (1/2) - ...................   22
6-9.  Schematic Diagram - MAIN Section (2/2) - ...................   23
6-10.  Printed Wiring Boards - PANEL Section - .....................   24
6-11.  Schematic Diagram - PANEL Section - ..........................   25
7. 
EXPLODED  VIEWS
7-1.  Cabinet (Upper) Section .................................................   29
7-2.  Cabinet (Front) Section ...................................................   30
7-3.  Cabinet (Lower) Section .................................................   31
7-4.  CD Mechanism Deck Section .........................................   32
7-5. CD 
Block 
........................................................................  33
8. 
ELECTRICAL  PARTS  LIST
  ..............................   34
TABLE  OF  CONTENTS
ICF-CDK50
3
SECTION  1
SERVICING  NOTES
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.
  NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP 
BLOCK  OR  BASE  UNIT
ICF-CDK50
4
SECTION  2
GENERAL
This section is extracted 
from instruction manual.
AC power cord
Cord clamp
Template
Spacer
L (Low)
Dot
Mounting screw
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.
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Sony ICF-CDK50 Service Manual ▷ Download

  • DOWNLOAD Sony ICF-CDK50 Service Manual ↓ Size: 3.82 MB | Pages: 42 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony ICF-CDK50 in PDF for free, which will help you to disassemble, recover, fix and repair Sony ICF-CDK50 Audio. Information contained in Sony ICF-CDK50 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.