DOWNLOAD Sony ICF-CD513 Service Manual ↓ Size: 2.32 MB | Pages: 39 in PDF or view online for FREE

Model
ICF-CD513
Pages
39
Size
2.32 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-cd513.pdf
Date
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– 9 –
5. The optical pick-up will move inward if the
– .
button is
pressed, or outward if the
+ >
button is pressed.
6. Press the 
[BAND]
 button, and the spindle/tracking servo will
turn on, and if the data are read in, the mute turns off.
7. With the spindle/tracking servo turned on, pressing respective
buttons causes the operation to be performed as follows.
Name of Buttons
Operation
[1]
1 track jump setting
[2]
10 track jump setting
[3]
100 track jump setting
[4]
Tracking gain up
[5]
Returns to auto adjustment mode
[BAND]
Rough servo function turns on
8. After setting, press the
–  .
or
+  >
button to start the
track jump.
9. When the CD test-1 mode becomes active, press the
Z
button
and the disc table will open.
10. With the rough servo or spindle/tracking servo turned on, press
the 
[OFF]
 button and the CD will stop, and then press the
u
button and the operation will repeat, starting from focus search.
11. With the rough servo or spindle/tracking servo turned on, press
the
u
button and the optical pick-up will jump to the second
music and the set will release from the CD test-1 mode.
SECTION  4
TEST  MODE
4-1.
LCD  TEST  MODE
[Setting the Test Mode]
• Turn the power on while pressing
u
,
+ >
and 
[ALARM
ON/OFF]
 buttons simultaneously.
[Operation of Test Mode]
1. When LCD test mode becomes active, the microcomputer ver-
sion number is displayed on the LCD.
2. Press the
Z
button, and all segments of LCD will turn on.
LCD display
3. Press each button, and the corresponding segment will turn
off. Relation between buttons and corresponding segments is
as follows.
Name of Buttons
Segment (Display)
Z
TRACK
u
CD N
[BAND]
RADIO, FM1, FM2,
.(POINT)
[OFF]
– .
+ >
[CD PLAY MODE]
REP 1, ALL, SHUFFLE
[CLOCK]
AM, PM, 
:(COLON)
[D.S.T.]
[1]
[2]
[3]
[4]
[5]
[ALARM]
                   ,
[ALARM ON/OFF]
Note:
 The buttons may be pressed in random order.
4. Finally, press the 
[ALARM ON/OFF]
 button to release from
the LCD test mode. However, the LCD test mode does not
release if even one button has not been pressed yet whatever
you pressed the 
[ALARM ON/OFF]
 button.
4-2.
CD  TEST-1 (AUTO)  MODE
[Setting the Test Mode]
• Short the solder bridge of BP404 on the MAIN board (connect
IC401 tl pin and ground) and turn the power on. (See page 10)
[Operation of Test Mode]
1. When the CD test-1 mode becomes active, the disc table opens.
2. Insert the CD test disc YEDS-18. (Parts No. 3-702-101-01)
3. Press the
u
button, and the focus search will repeat until
the focus is OK.
4. When the focus is OK, auto adjustment is executed and at the
completion, the rough servo function turns on and the adjusted
value is displayed on the LCD.
LCD display
RADIO
FM1
FM2
AM
PM
CD
SHUFFL
REP 1 ALL
TRACK
F-E balance
adjusted value
Tracking gain
adjusted value
Focus bias
adjusted value
– 10 –
– MAIN BOARD (Conductor Side) –
E C B
Q302
R307
C436
C433
C434
C435
C428
C427
C426
R465
R464
4
67
R463
R462
R460
R459
R458
R456
R455
R454
C449
R484
R457
R453
C421
C419
C418
R452
R451
R450
R449
C422
R439
R441
C439
C441
C444
8
C414
R434
C410
R433
JC40
X401
C407
+
IC401
1
2
2
40
41
60
61
80
BP403
(CD TEST MANUAL)
BP404
(CD TEST AUTO)
(US, Canadian)
4-3.
CD  TEST-2 (MANUAL)  MODE
[Setting the Test Mode]
• Short the solder bridge of BP403 on the MAIN board (connect
IC401 tk pin and ground) and turn the power on.
[Operation of Test Mode]
1. Insert the CD test disc YEDS-18. (Parts No. 3-702-101-01)
2. Press the
u
button, and the focus search will repeat until
the focus is OK.
3. When the focus is OK, the rough servo function turns on.
4. Press the 
[BAND]
 button, and the spindle/tracking servo will
turn on, and if the data are read in, the mute turns off. Press the
[BAND]
 button again, and the rough servo will turn on.
5. With the rough servo or spindle/tracking servo turned on the
optical pick-up will move inward if the
–  .
button is
pressed, or outward if the
+ >
button is pressed.
6. With the rough servo or spindle/tracking servo turned on, press
the 
[OFF]
 button and the CD will stop, and then press the
u
button and the operation will repeat, starting from focus search.
7. With the rough servo or spindle/tracking servo turned on, press
the
u
button and the optical pick-up will jump to the second
music and the set will release from the CD test-2 mode.
Connecting Points
BP403
   Short: CD Test-2 Mode
   Open: Normal Mode
(
) (
BP404
   Short: CD Test-1 Mode
   Open: Normal Mode
)
– 11 –
no mark : US, Canadian models
<        > : AEP model
AM  IF  ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
AM  FREQUENCY  COVERAGE  ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
530 kHz
2.65 
±
 0.05 V
<531 kHz>
Confirmation
1,710 kHz
8.8 
±
 1.0 V
<1,602 kHz>
<8.3 
±
 1.0 V>
AM  TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter
L3
580 kHz <621 kHz>
CT2
1,490 kHz <1,404 kHz>
FM  FREQUENCY  COVERAGE  ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L2
87.5 MHz
2.6 
±
 0.05 V
Confirmation
108 MHz
8.8 
±
 1.0 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
87.5 MHz
CT1
108 MHz
Adjustment Location: MAIN board (See page 13)
FM  VCO Adjustment
Setting:
Procedure:
1. Connect the frequency counter to TP(ST VCO), TP(TU - +B)
on the MAIN board, as shown the figure below.
2. Tune the set to 98 MHz.
3. Adjust RV1 on the MAIN board for 76 kHz reading on the
frequency counter.
Specified Value: 75.95 to 76.05 kHz
Adjustment Location: MAIN board (See page 13)
SECTION  5
ELECTRICAL  ADJUSTMENTS
TUNER  SECTION
0 dB=1 µV
[AM]
Setting:
Function
: RADIO
Band switch : AM
[FM]
Setting:
Function
: RADIO
Band switch : FM
• Attention
BP1 Desoldering
(Must be short after measurement)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
AM RF signal 
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
Put the lead-wire
antenna close to 
the set.
+
–
level meter
set
4 
Ω
MAIN board
speaker terminal (CN301)
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
+
–
level meter
set
4 
Ω
0.01 
µ
F
MAIN board
TP (FM IN)
MAIN board
speaker terminal (CN301)
TP (FEG GND)
digital voltmeter
100 k
Ω
MAIN board
TP (VT)
FM RF SSG
Carrier frequency: 98 MHz
Modulation: 400 Hz, 30% FM modulation
Output level: 0.1 V (100 dB)
MAIN board
TP (FM IN)
0.01 
µ
F
set
TP (FEG GND)
1 
µ
F
TP (ST VCO)
+
–
frequency counter
33 k
Ω
TP (TU - +B)
+
MAIN board
– 12 –
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
Focus Bias Check
Connection:
Procedure:
1. Connect the oscilloscope to TP513 (RF) and TP568 (GND) on
the MAIN board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the
u
button.
4. Confirm that the oscilloscope waveform is as shown in the
figure 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)
Connecting Points: MAIN Board (See page 13)
MAIN board
TP513 (RF)
TP568 (GND)
+
–
oscilloscope
(AC range)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
1.2 
±
 0.2 Vp-p
When observing the eye pattern, set the oscilloscope 
for AC range and raise vertical sensitivity.
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