ICF-CD2000, ICF-CD2000S - Sony Audio Service Manual (repair manual)

icf-cd2000, icf-cd2000s service manual
Model
ICF-CD2000 ICF-CD2000S
Pages
47
Size
3.05 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-cd2000-icf-cd2000s.pdf
Date

Read Sony ICF-CD2000 / ICF-CD2000S Service Manual online

SERVICE MANUAL
ICF-CD2000
FM/AM CD CLOCK RADIO
ICF-CD2000S
FM/SW/MW CD CLOCK RADIO
US Model
Canadian Model
E Model
Tourist Model
ICF-CD2000
AEP Model
UK Model
ICF-CD2000S
SPECIFICATIONS
ICF-CD2000/CD2000S
Photo: ICF-CD2000 (US model)
Model Name Using Similar Mechanism
D-E551
Optical Device Name
CDM-2911EBA
Optical Pick-Up Name
DAX-11E
Ver. 1.1  2005.02
9-927-171-12
2005B05-1
© 2005.02
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
– 2 –
TABLE  OF  CONTENTS
1.
SERVICING NOTES
................................................
3
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
.........................................................
8
4.
SERVICE  MODE
...................................................... 11
5.
TEST  MODE
.............................................................. 12
6.
ELECTRICAL  ADJUSTMENTS
......................... 15
7.
DIAGRAMS
7-1. IC Pin Function Description ........................................... 21
7-2. Block Diagram  – CD Section – ..................................... 23
7-3. Block Diagram – Main Section – ................................... 27
7-4. Printed Wiring Boards  – MAIN/JACK Boards – .......... 31
7-5. Schematic Diagram  – MAIN/JACK Boards – .............. 35
7-6. Printed Wiring Boards  – LCD/KEY Boards – .............. 40
7-7. Schematic Diagram  – LCD/KEY Boards – ................... 45
8.
EXPLODED  VIEWS
................................................ 53
9.
ELECTRICAL  PARTS  LIST
............................... 57
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
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.
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  FONCTIONNEMENT.  NE  REMPLACER  CES  COM-
POSANTS  QUE  PAR  DES  PIÈCES  SONY  DONT  LES
NUMÉROS  SONT  DONNÉS  DANS  CE  MANUEL  OU
DANS  LES  SUPPLÉMENTS  PUBLIÉS  PAR  SONY.
SAFETY-RELATED  COMPONENT  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  PUB-
LISHED  BY  SONY.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
HOW  TO  CHANGED  THE  CERAMIC  FILTERS
This model is used two ceramic filters of CF1 and CF3.
You must use same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must be changed two pieces together
since it’s supply two pieces in one package as a spare parts.
– 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 electro-
static breakdown because of the potential difference generated by
the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
Before Replacing the Optical Pick-Up Block
Please be sure to check thoroughly the parameters as par the “Op-
tical Pick-Up Block Checking Procedures” (Part No.: 9-960-027-
11) issued separately before replacing the optical pick-up block.
Note and specifications required to check are given below.
• FOK output: IC501 ts pin
• S curve P-to-P value: 1.2 Vp-p IC501 wa pin
When checking S curve P-to-P value, remove the lead wire to
disc motor.
• RF signal P-to-P value: 0.8 to 1.3 Vp-p
• Traverse signal P-to-P value: 0.7 to 1.8 Vp-p
• The repairing grating holder is impossible.
Precautions for Checking Emission of Laser Diode
Laser light of the equipment is focused by the object lens in the
optical pick-up so that the light focuses on the reflection surface
of the disc. Therefore, be sure to keep your eyes more then 30 cm
apart from the object lens when you check the emission of laser
diode.
Laser Diode Checking Methods
During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper panel is closed while turning
ON the S423. (push switch type)
However, in the service mode, the laser diode always emits light
even if S423 is not turned on.
The following two checking methods for the laser diode are oper-
able.
• Method-1 (In the service mode or normal operation):
Emission of the laser diode is visually checked.
1. Open the upper lid.
2. Push the S423 as shown in Fig. 1.
(Unnecessary in the service mode)
3. Press the 
[CD     ]
 key.
4. Check the object lens for confirming normal emission of the
laser diode. If not emitting, there is a trouble in the automatic
power control circuit or the optical pick-up.
During normal operation, the laser diode is turned ON about
2.5 seconds for focus searching.
Fig. 1 Method to push the S423
u
– 4 –
1-673-930-
11
(11)
C586
C585
C587
C493
C495
R478
R844
99
R476
C419
R483
R477
C551
C545
C565
C569
C807
C806
C805
R591
R567
C505
R565
R850
C619
C609
C542
R535
C536
C533
C555
R851
C554
R524
C516
R525
R501
R575
R576
R558
R557
R566
R854
R568
C504
C559
C506
R584
R631
C540
R552
R553
R549
C494
FB401
L508
L515
C510
L501
C801
C553
C552
C803
R632
C502
C519
R539
D512
D501
Q601
IC404
C534
+
C543
+
C610
+
C608
+
C541
+
C535
+
C520
+
C564
+
C568
+
C595
+
C515
+
C561
+
14
13
8
1
9
16
AK
A
K
D504
A
A
K
Q514
Q507
Q505
B C E
B C E
BC
E
BC
E
Q503
2E2B 1C
2C1B 1E
Q502
2E2B1C
2C1B 1E
2B 2E
TP
(IOP 0)
TP
(IOP 1)
1C
1B 2C
1E
2C
1B
1E
2E
2B
1C
Q501
Q513
L511
TP
(RF)
TP
(TE)
TP
(GND)
TP
(VC)
+
digital voltmeter
(DC3 V range)
• Method-2 (In the service mode or normal operation):
Check the value of current flowing in the laser diode.
1. Remove the upper panel.
2. Connect a digital voltmeter as show in Fig. 2.
3. Press the 
[CD     ]
 key.
4. Calculate current value by the reading of the digital voltmeter.
Reading of the digital voltmeter (V) 
÷
 2.2 (
) = current value
(A)
(Example) Reading of the digital voltmeter of 0.082 V:
0.082 V
÷
2.2 
= 0.037 (A) = 37 mA
Current value of the specified: 16 to 18 mA
5. Check that the current value is within the following range.
• Current value of the specified 
 mA (25 ˚C)
Variation by temperature: 0.4 mA/˚C
Current increases with temperature increased.
Current decreases with temperature decreased.
If the current is more than the range above, there is a trouble
in the automatic power control circuit or the laser diode is in
deterioration.
If less than the range, a trouble exists in the automatic power
control circuit or the optical pick-up.
– MAIN  Board (Conductor Side) –
Fig. 2  Digital voltmeter connecting location
u
+5
–11
Page of 47

Download Sony ICF-CD2000 / ICF-CD2000S Service Manual (Repair Manual)

Here you can read online and download Sony ICF-CD2000 / ICF-CD2000S Service Manual in PDF. ICF-CD2000 / ICF-CD2000S service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony ICF-CD2000 / ICF-CD2000S 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.