Sony ICF-CD830 / ICF-CD830L Service Manual ▷ View online
4
ICF-CD830/CD830L
SECTION 2
ELECTRICAL ADJUSTMENTS
FM VCO Adjustment
Procedure:
FM RF signal
generator
generator
Carrier frequency: 98 MHz
Modulation: no modulation
Output level: 0.1 V (100 dB)
Modulation: no modulation
Output level: 0.1 V (100 dB)
0.01
µ
F
FM lead wire antenna terminal
Connection:
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
455 kHz
AM FREQUENCY COVERAGE ADJUSTMENT (CD830)
Adjust for a maximum reading on level meter
L4
515 kHz (516.5 kHz)
CT4
1,750 kHz (1,631.5 kHz)
AM TRACKING ADJUSTMENT (CD830)
Adjust for a maximum reading on level meter
L1
600 kHz
CT1
1,400 kHz
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
done by the trimmer capacitors.
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L3
86.5 MHz (87.35 MHz)
CT3
109.5 MHz (108.25 MHz)
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
86.5 MHz (87.35 MHz)
CT2
109.5 MHz (108.25 MHz)
PRECAUTION
• Adjustment should be performed in the order given.
[FM]
Setting:
Function switch : RADIO
BAND switch
Function switch : RADIO
BAND switch
: FM
[AM (MW/LW) ]
Setting:
Function switch : RADIO
BAND switch
Function switch : RADIO
BAND switch
: AM (MW/LW)
AM RF signal
generator
generator
30% amplitude modulation by
400 Hz signal.
Output level: as low as possible
400 Hz signal.
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
FM RF signal
generator
generator
75 kHz frequency deviation
by 1 kHz signal.
Output level: as low as possible
by 1 kHz signal.
Output level: as low as possible
0.01
µ
F
FM lead wire antenna terminal
TUNER SECTION
0 dB=1
µ
V
Frequency counter
75,950 – 76,050 Hz
IC1 Pin
4
+
–
–
frequency counter
33 k
Ω
MAIN Board
IC1 Pin
7
LW FREQUENCY COVERAGE ADJUSTMENT (CD830L)
Adjust for a maximum reading on level meter
CT6
145 kHz
LW TRACKING ADJUSTMENT (CD830L)
Adjust for a maximum reading on level meter
L1-2
160 kHz
CT5
240 kHz
1. Connect the frequency counter to 4 and 7 pins of IC1 as shown
the figure below.
2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz reading on frequency counter.
3. Adjust RV1 for 76 kHz reading on frequency counter.
Specification Value:
MW FREQUENCY COVERAGE ADJUSTMENT (CD830L)
Adjust for a maximum reading on level meter
L4
515 kHz
CT4
1,750 kHz
MW TRACKING ADJUSTMENT (CD830L)
Adjust for a maximum reading on level meter
L1-1
600 kHz
CT1
1,400 kHz
level meter
set
SPEAKER OUT
4
Ω
+
–
–
( ) : AEP Model
Adjustment Location:
[MAIN BOARD] (Component Side)
L3
T1
AM IF
Adjustment
AM IF
Adjustment
CT3
CT2
L2
FM Tracking
Adjustment
FM Tracking
Adjustment
L3
FM Frequency
Coverage
Adjustment
FM Frequency
Coverage
Adjustment
L4
CT4
AM Frequency
Coverage Adjustment
MW Frequency
Coverage Adjustment
AM Frequency
Coverage Adjustment
MW Frequency
Coverage Adjustment
CT6
LW Frequency
Coverage
Adjustment
LW Frequency
Coverage
Adjustment
L1, L1-1
AM Tracking Adjustment
MW Tracking Adjustment
AM Tracking Adjustment
MW Tracking Adjustment
CT5
LW Tracking Adjustment
LW Tracking Adjustment
L1-2
LW Tracking Adjustment
LW Tracking Adjustment
CT1
AM Tracking Adjustment
MW Tracking Adjustment
AM Tracking Adjustment
MW Tracking Adjustment
FM
VCO
RV1
5
5
ICF-CD830/CD830L
SECTION 3
DIAGRAMS
3-1. BLOCK DIAGRAM (CD830)
: AM
: FM
: CD
• Signal Path
SYSTEM CONTROL
IC401
OPTICAL PICK-UP
BLOCK
(KSS-213C)
A
B
C
D
E
F
LD
VC
+3.3V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
Q501
8
7
TIN1
9
TIN2
LDD
LDS
10
80
79
MOTOR/COIL DRIVE
IC551
F+
27
F-
26
T+
17
T-
18
SL+
2
SL-
1
M
SLED
MOTOR
SP+
11
SP-
12
M
SPINDLE
MOTOR
F+
F-
T+
T-
15
DIGITAL SIGNAL PROCESSOR,
D/A CONVERTER
RF AMP,
IC501
DIGITAL SERVO,
42
45
63
62
61
67
65
31
49
XIN
48
XOUT
X501
33.8688MHz
74
X1
75
X2
X401
4.19MHz
70
XT1
71
XT2
X402
32kHz
DI(C DATA)
54
CL(C CLK)
55
CE(C LAT)
53
DRF
48
FSEQ
51
DO(DATA IN)
56
64
RES(XRST)
58
FM/AM RF,IF,DET,MPX
WRQ
50
OPIN
MAIN BOARD
ANT1
IC1
MUTE
Q151
MUTE
CONT
Q351
S401
DOOR SW
CONT1
72
66
LCHO
RCHO
DI
CL
CE
DRF
WRQ
FSEQ
DO
RES
RADIO ON
64
RST
59
RESET
IC402
6
L OUT
5
R OUT
BUFFER
Q131
BUFFER
Q231
BUFFER
Q101
BUFFER
Q201
MUTE
Q251
RV351
VOLUME
BOARD
MOTOR(6P)
9
SPDO
22
SP
3
SLDO
23
SL
20
TDO
20
TIN
24
FDO
21
FIN
7
CONT4
25
MUTE
23
VREF
FIN2
FIN1
11
VREF
4
RST
52
BUZZER
62
AMUT
63
POWER ON
CD OPEN
65
LIMIT
SW
12
11
3
5
8
IC371
POWER AMP
SP101
L
SP201
R
(SPEAKER)
KEY BOARD
+B SW
Q1
+3.3V
TU +B
SEG0
SEG15
10
25
LIQUID CRYSTAL
DISPLAY PANEL
LCD401
COM0
COM3
6
9
KEY0
KEY12
35
30
40
46
FUNCTION
KEY
S601-613
BOARD
LED
D401-402
D653
D652
D651
80
BUZZER LED
79
RADIO LED
78
CD LED
76
RESET
D903-906
AC
IN
T901
POWER
TRANSFOMER
BOARD
TRANSFORMER
REG
REG
Q902
Q901
+B SW
Q502
CD +B
+3.3V
M +6V
D901
D902
D907
D403
D404
49
AC IN
60
CD ON
(FM ANTENNA)
M571
M572
S570
Q372,Q373
STBY
L IN
R IN
L OUT
R OUT
+6V
13
14
FM IF IN
AM IF IN
15 BAND SW
18
20
22
19
24
FM ANT
FM RF
FM OSC
AM ANT
AM OSC
BPF1
B.P.F
3
1
CF3
10.7MHz
T1
AM IFT
21 REG
L1
AM FERRITE-ROD
ANTENNA
L2
FM RF
CT2
CV1-2
CV1-1
CV1-4
L3
FM OSC
CT3
CT1
CT4
CV1-3
L4
AM OSC
16
MIX OUT
CF2
455kHz
26
DISCRI
27
VCO
CF1
S1
FM
AM
RV1
FM
TRACKING
AM
TRACKING
FM
FREQUENCY
COVERAGE
AM
FREQUENCY
COVERAGE
AM
IF
FM
VCO
6
6
ICF-CD830/CD830L
3-2. BLOCK DIAGRAM (CD830L)
: MW/LW
: FM
: CD
• Signal Path
SYSTEM CONTROL
IC401
OPTICAL PICK-UP
BLOCK
(KSS-213C)
A
B
C
D
E
F
LD
VC
+3.3V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
Q501
8
7
TIN1
9
TIN2
LDD
LDS
10
80
79
MOTOR/COIL DRIVE
IC551
F+
27
F-
26
T+
17
T-
18
SL+
2
SL-
1
M
SLED
MOTOR
SP+
11
SP-
12
M
SPINDLE
MOTOR
F+
F-
T+
T-
15
DIGITAL SIGNAL PROCESSOR,
D/A CONVERTER
RF AMP,
IC501
DIGITAL SERVO,
42
45
63
62
61
67
65
31
49
XIN
48
XOUT
X501
33.8688MHz
74
X1
75
X2
X401
4.19MHz
70
XT1
71
XT2
X402
32kHz
DI(C DATA)
54
CL(C CLK)
55
CE(C LAT)
53
DRF
48
FSEQ
51
DO(DATA IN)
56
64
RES(XRST)
58
13
14
FM IF IN
AM IF IN
FM/AM RF,IF,DET,MPX
15 BAND SW
WRQ
50
OPIN
MAIN BOARD
ANT1
18
20
22
19
24
FM ANT
FM RF
FM OSC
AM ANT
AM OSC
BPF1
B.P.F
3
1
IC1
CF3
10.7MHz
T1
AM IFT
MUTE
Q151
MUTE
CONT
Q351
S401
DOOR SW
CONT1
72
66
LCHO
RCHO
DI
CL
CE
DRF
WRQ
FSEQ
DO
RES
RADIO ON
64
RST
59
21 REG
L2
CT2
FM RF
CT2,L2
CV1-2
CV1-4
CV1-1
L3
CT3
FM OSC
L3,CT3
CV1-3
L4
MW/LW
OSC
OSC
RESET
IC402
16
MIX OUT
CF2
455kHz
26
DISCRI
27
VCO
CF1
RV1
6
L OUT
5
R OUT
BUFFER
Q131
BUFFER
Q231
BUFFER
Q101
BUFFER
Q201
MUTE
Q251
RV351
VOLUME
BOARD
MOTOR(6P)
9
SPDO
22
SP
3
SLDO
23
SL
20
TDO
20
TIN
24
FDO
21
FIN
7
CONT4
25
MUTE
23
VREF
FIN2
FIN1
11
VREF
4
RST
52
BUZZER
62
AMUT
63
POWER ON
CD OPEN
65
LIMIT
SW
12
11
3
5
8
IC371
POWER AMP
SP101
L
SP201
R
(SPEAKER)
KEY BOARD
+B SW
Q1
+3.3V
TU +B
SEG0
SEG15
10
25
LIQUID CRYSTAL
DISPLAY PANEL
LCD401
COM0
COM3
6
9
KEY0
KEY12
35
30
40
46
FUNCTION
KEY
S601-613
BOARD
LED
D401-402
D653
D652
D651
80
BUZZER LED
79
RADIO LED
78
CD LED
76
RESET
D903-906
AC
IN
T901
POWER
TRANSFOMER
BOARD
TRANSFORMER
REG
REG
Q902
Q901
+B SW
Q502
CD +B
+3.3V
M +6V
D901
D902
D907
D403
D404
49
AC IN
60
CD ON
FM
TRACKING
FM
FREQUENCY
COVERAGE
AM
IF
FM
VCO
(FM ANTENNA)
M571
M572
S570
L1-1
(MW)
L1-2
(LW)
L1
MW/LW FERRITE-ROD
ANTENNA
L1-2,CT5
LW TRACKING
MW
FREQUENCY
COVERAGE
L1-1,CT1
MW TRACKING
L4,CT4
LW
FREQUENCY
COVERAGE
CT6
CT6
S1-2
MW
LW
FM
Q2,Q3
Q372,Q373
S1-1
CT4
CT5
CT1
STBY
L IN
R IN
L OUT
R OUT
+6V
7
7
ICF-CD830/CD830L
3-3. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) (CD830) –
Note on Schematic Diagrams:
• All capacitors are in
• All capacitors are in
µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
• C : panel designation.
• H : adjustment for repair.
• H : adjustment for repair.
• A : B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
f
: AM
• Abbreviation
AUS
: Australian model.
CND : Canadian model.
IT
IT
: Italian model.
SP
: Singapore model.
• Refer to page 14 for IC Block Diagrams.
C131
0.022
C232
0.022
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