Sony ICF-CDK50 Service Manual ▷ View online
ICF-CDK50
13
– TU BOARD (Component Side) –
– TU BOARD (Conductor Side) –
L4
AM VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
AM Tracking Adjustment
L3
CT3
TP (VT)
TP (GND)
TP (ANT)
Adjustment Location:
ICF-CDK50
14
CD SECTION
RF SIGNAL CHECK
Procedure:
1. Connect the oscilloscope to TP (RF) and TP (VC) on the CD
Procedure:
1. Connect the oscilloscope to TP (RF) and TP (VC) on the CD
board.
2. Insert the disc (PATD-012) (Part No. : 4-225-203-01).
3. Press the [
3. Press the [
u
] button.
4. Confi rm that the oscilloscope waveform is as shown in the fi g-
ure below. (eye pattern)
A good eye pattern means that the diamond shape (
◊) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 200 ns
0.7 to 1.7 Vp-p
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
Connecting Location:
IC701
TP (VC) TP (RF)
– CD Board (Conductor Side) –
ICF-CDK50
ICF-CDK50
15
15
SECTION 6
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specifi ed.
• f :
internal
component.
• C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• C : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• C : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
- CD Board -
no mark : CD play
- TU Board -
no mark : FM
( ) : AM
- Other Boards -
no mark : FM
( ) : CD play
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
no mark : CD play
- TU Board -
no mark : FM
( ) : AM
- Other Boards -
no mark : FM
( ) : CD play
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms
• Signal path.
F :
F :
AUDIO
L :
FM
f :
AM
J
: CD play
i : AUDIO IN
• Abbreviation
CND :
CND :
Canadian
model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• W : indicated side identifi ed with part number.
• f :
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
• W : indicated side identifi ed with part number.
• f :
internal
component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Note:
The components identi-
fi
The components identi-
fi
ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
cal for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
• Circuit Boards Location
MAIN board
TU board
POWER board
TIMER board
VOL board
REMOTE CONTROL board
BATTERY board
MOTOR board
CD board
LCD board
ICF-CDK50
ICF-CDK50
16
16
M702
JW701
JW702
JW703
JW704
JW705
JW706
JW707
JW708
JW710
JW71
1
JW712
JW713
JW714
JW715
JW716
JW717
JW718
JW720
JW722
JW723
JW724
JW725
JW726
JW727
JW728
JW729
JW730
JW731
JW732
JW733
JW734
JW735
JW736
JW737
JW719
JW721
JW738
S701
CNP702
CNP701
C704
C738
C769
C702
C707
C733
C739
C721
C716
C706
C761
C764
X701
C772
D701
D70
2
JC702
C763
C762
IC702
R710
R71
8
C710
R708
R770
C771
C701
C74
9
R753
C75
1
R774
R778
R773
R716
C729
C746
R75
5
C768
C70
3
C744
C74
8
C713
C74
3
C74
7
C74
5
R75
1
C734
C76
0
C74
1
C76
7
C75
4
C757
C753
C774
C750
C74
0
C71
4
C712
C727
C726
R73
8
C725
C73
2
C770
R760
R775
C74
2
C73
1
C756
C755
R776
R709
R704
R71
3
R706
R707
R702
R703
R72
0
R72
1
R777
R70
1
R711
R714
Q704
R757
Q703
C717
C720
R715
R73
9
R74
3
R74
0
R741
R752
R742
R748
R747
R749
R744
C708
R746
R761
R725
C723
C722
C719
C724
R722
R72
6
R730
R732
R73
1
R735
R728
R769
R733
R75
6
R72
7
R76
8
R734
R72
9
R724
R723
R737
R736
JC701
C758
Q702
R771
C71
8
C765
R762
R76
6
R745
R71
9
IC701
C728
C705
C71
1
FB704
R765
R750
R764
R763
R767
R70
5
R758
Q701
R754
FB703
FB701
FB702
14
8
7
1
15
21
22
28
2
1
5
11
14
TP
(VC)
TP
(RF)
C
B
E
C
B
E
C
B
E
D
MAIN
BOARD
CN801
M701
(SPINDLE)
M
(LIMIT)
1
3
10
5
39
35
30
52
45
26
20
15
(SLED)
M
CD BOARD
A
B
C
D
E
F
2
3
4
5
6
G
1
OPTICAL
PICK-UP
BLOCK
(KSM-213CCP)
1-871-580-
11
(11)
1
5
15
2
10
16
C
B
E
6-1. PRINTED WIRING BOARD - CD Board -
•
: Uses unleaded solder.
• See page 15 for Circuit Boards Location.
(Page 21)
Ref. No. Location
• Semiconductor
Location
D701
G-4
D702
C-4
IC701
E-3
IC702
B-4
Q701
C-1
Q702
C-3
Q703
B-3
Q704
D-4
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