Sony CFD-G550CP Service Manual ▷ View online
17
CFD-G550CP
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
530 kHz
1,710 kHz
Reading on Digital voltmeter
1.0
± 0.05 V
5.3
± 0.7 V
Adjustment Part
L4
<confirmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT3
620 kHz
1,400 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
10.7 MHz
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
87.5 MHz
108 MHz
Reading on Digital voltmeter
1.3
± 0.3 V
3.0
± 0.2 V
Adjustment Part
<confirmation>
L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
87.5 MHz
108 MHz
digital
voltmeter
voltmeter
100 k
Ω
TP (VT)
i
jack (J391)
set
32
Ω
level meter
(range: 0.5–5 V ac)
(range: 0.5–5 V ac)
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
TP (FM IN)
FM RF signal
generator
generator
0.01
µ
F
set
TUNER SECTION 0 dB = 1
µ
V
• AM Section
Setting:
RADIO BAND•AUTO PRESET button: AM
RADIO BAND•AUTO PRESET button: AM
30% amplitude
modulation by
400 Hz signal
modulation by
400 Hz signal
• FM Section
Setting:
RADIO BAND•AUTO PRESET button: FM
RADIO BAND•AUTO PRESET button: FM
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
deviation by 1 kHz signal
output level : as low as possible
• Connecting Level Meter (FM and AM)
Adjustment Location: See page 18.
• Connecting Digital Voltmeter (FM and AM)
• 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.
18
CFD-G550CP
Q701
R701
R702
R703
R704
R705
R706
R707
R708
R709
R711
R716
R719
R720
R721
R722
R729
R730
R745
C701
C703
C705
C706
C740
C710
C711
C712
C713
C714
C716
C717
C718
C719
C720
C745
C750
C751
C721
R710
R731
R755
R756
R757
R758
R759
R724
R725
R726
R727
R728
R732
R733
C708
C746
C742
C743
C744
C76
C763
R763
R764
R723
IC701
CNP701
M701
C704
C723
C707
C715
C709
TP
(RF)
TP
(VC)
– CD/MP3 board (side B) –
Adjustment Location:
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between IC701 pin 4 and pin qa (or
TP (RF) and TP (VC).
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the N X (CD) button.
4. Confirm that the oscilloscope waveform is as shown in the
3. Press the N X (CD) 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.
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)
Test Point:
RF level :
0.85
0.85
±
0.2 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
and raise vertical sensitivity.
L4
TP (FM IN)
(CONDUCTOR SIDE)
CT1
IC1
IC2
CT3
L1
L2
T2
T1
L3
– MAIN board (component side) –
L4
AM
FREQUENCY
COVERAGE
ADJUSTMENT
L2
FM
FREQUENCY
COVERAGE
ADJUSTMENT
CT3, L3
AM
TRACKING
ADJUSTMENT
CT1, L1
FM
TRACKING
ADJUSTMENT
T1
AM
IF
ADJUSTMENT
T2
FM
IF
ADJUSTMENT
TP (VT)
(CONDUCTOR SIDE)
CFD-G550CP
19
19
CFD-G550CP
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM — CD SECTION —
A
C
B
F
E
D
A
C
B
D
LD
PD
VR
F
T+
T–
F+
F–
F–
SL+
SL–
SL–
SP+
SP–
E
VREF
LD
PD
LD POWER
CONTROLLER
Q701
APC
FIN2
FIN1
LDD
LDS
TIN2
TIN1
VREF
RF
10
9
11
80
7
79
4
8
20
17
18
TRACKING
COIL
DRIVE
10
7
FOCUS
COIL
DRIVE
TIN
FIN
25
SLIN
SLED
MOTOR
DRIVE
3
SPINDLE
MOTOR
DRIVE
SPIN
VREF
OPIN
MUTE
T+
T–
12
11
F+
F–
26
27
SL+
SL–
2
1
SP+
SP–
TRACKING
COIL
FOCUS
COIL
OPTICAL PICK-UP
BLOCK
(KSS-213R)
M
M
M702
SLED
MOTOR
M701
SPINDLE
MOTOR
SLED/SPINDLE
MOTOR DRIVER,
TRACKING/FOCUS
COIL DRIVER
IC702
S701
(LIMIT)
EFMIN
HFL
AGC
PH(RFENV)
FE
TE
VREF
CONT1
FSEQ
CONT4
DRF
RES
DI
CE
CL
WRQ
DO
XOUT
XIN
LCHO
RCHO
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
CF2
FSX/16MIN
16MOUT
A
3
67
TDD
TD
FD
SP
SL
31
72 25
66
63 61 62
49
48
73
74
75
76
77
78
80
1
2
3
4
5
9
59
58
57
56
55
52
50
65 64
42
45
RF AMP,
SYSTEM SERVO PROCESSOR,
DIGITAL SIGNAL PROCESSOR
IC701
48
77
72
73 76 75 50 74
78
X701
16.9MHz
CD-CE
CD-DO
CD-CL
CD-WRQ
CD-RES
CD-DRF
CD-FSEQ
CD-DI
79
44
49
80
MP3-CE
70
MP3-CL
68
69
MP3-CMDIN
MP3-INTB
MP3-RESB
MP3-CMDOUT
RESB
INTB
CE
CL
CMDIN
CMDOUT
CD-DOOR
CD-ON
21
SYSTEM CONTROLLER
IC801 (1/2)
CD1.8V
CD3.3V
S801
PUSH
OPEN/
CLOSE
D901 –904
F902
CNJ901
T901
POWER
TRANSFORMER
AC IN
Signal path
: CD
R-ch is omitted due to same as
L-ch.
CLV,CAV
CONTROL
PLL
VCEC
SWITCH
ERROR
CORRECTION
AUDIO CD
A/D
CONVERTER,
SERVO
PROCESSOR
FRAME SYNC
DETECT,PROTECT
INSERT
EFM DECODER
INTERPOLATION
MUTE
&
ATTENUATION
DEEMPHASIS
8FS
DIGITAL
FILTER
&
1-bit DAC
SERIAL
OUT
EXTERNAL
AUDIO IN
LPF
SLICE
LEVEL
CONTROL
GENERAL
PURPOSE
PORT
COMMAND
INTERFACE
INTERFACE
CLOCK
GENERATOR
23
15
FD
SL
SP
TD
VREF
VREF
VREF
R-CH
DATACK
LRSY
79
60
DATA IN
ADDATA
ADBCK
ADLRCK
CF2IN
WEB
OEB
CASLB
CASUB
RASB
CKOUT
7
54
41 44 43 45 42
16 30 31 29 15
23-30,33-40
60-53,50
18-21,24-28
2-5,7-10,
35-38,40-43
CKIN
CMDOUT
CMDIN
CL
CE
INTB
INTB
RESB
CMDOUT
CMDIN
CL
CL
CE
INTB
INTB
RESB
CD L CH
DRY BATTERY
SIZE " D "
(IEC DESIGNATION R20)
8PCS,12V
D/A
CONVERTER
PH/BH
POWER
CONTROL
Q806,808
+6V
REG
Q972
+3.3V
REG
Q956
+9V
REG
Q971
+6V
REG
Q954
POWER
CONTROL
Q951-953(E41)
Q952,953(MX)
20
FDD
SPDO
SLDO
21 22 23
+1.8V
REG
IC1003
Q803
AC CHK
PCON
93
6V
U-COM(VDD)
U-COM3.3V
VDD(SW)
3.3V
CD6V
AUDIO 6V
MDATA0
I
MDATA15
MADRS0
I
MADRS8
WE
OE
LCAS
UCAS
RAS
DQ0-DQ15
A0-A8
MPS DECODER,
CD-ROM DECODER,
ANTI-SHOK
CONTROLLER
IC1001
SDRAM
IC1002
1
3
+3.3V
REG
IC803
2
3
(Page 20)
CFD-G550CP
20
20
CFD-G550CP
6-2. BLOCK DIAGRAM — MAIN SECTION —
5
21
22
16
4
L-CH
R-CH
HRP301
RECORD/PLAYBACK
HEAD
HE301
ERASE HEAD
DET
ALC 2
RADIO L
18
15
L.LO
R.LO
TAPE
R-CH
TU_IN_R
TU_IN_L
TAPE
LOGIC
13
SC
14
SI
POWER AMP
IC371
R-CH
SP191
SPEAKER
(L-CH)
SP291
SPEAKER
(R-CH)
J391
REF
L.LINE
L.RO
REC
L.RAD
R.RAD
T301
REC BIAS OSC
Q301
TAPE
20
V-CLOCK
V-DATA
CD ON
SYSTEM CONTROLLER
IC801 (2/2)
95
21
94
EEPROM
IC802
REMOTE
CONTROL
RECEIVER
IC891
SCL
SAD
46
48
1
3
KEY1
KEY2
53
KEY3
54 55
Signal path
: FM
: AM
: TAPE PLAY
: TAPE REC
: CD
: FM
: AM
: TAPE PLAY
: TAPE REC
: CD
R-ch is omitted due to same as
L-ch.
L-ch.
REC/PB
PRE AMP
IC301
12
3
WOOFER AMP
IC351
20
6
14
R.LINE
8
R.IN
L.IN
9
R.RO
i
A-MUTE
91
MUTE
Q354
OVER LOAD
DET
Q351
WOOFER 1/2
96
WOOFER ON/OFF
92
TAPE-PLAY
97
M
24
REC IN
98
-1
-2
S301
(REC/PB)
REC
PB
VDD (SW)
KEY3
KEY1
KEY2
M971
CAPSTAN/REEL
MOTOR
17
LINE
CD_IN_R
CD_IN_L
S417,418
S409-416,
S401-408
S409-416,
S401-408
6
5
11
12
33
AUDIO 6V
AC-HI
RMC IN
TU_IN_R
SP393
WOOFER
U-COM
(VDD)
9V
S971
(PLAY)
S972
(MOTOR)
A
KEY NETWORK
D402
OPR/BATT
D801
D803
VIN1
OUT1
IC321
ELECTRONIC VOLUME
5
17
VOL AMP
32
31
30
29
22
23
27
26
24
26
27
30-33
LIQUID CRYSTAL
DISPLAY PANEL
LCD401
1-9,34-41,
43-48,50-55
S0
I
S28
COM0
I
COM3
3
5
8
12
WOOFER
CONTROL
Q321-323
Q321-323
STANDBY
SW
Q352,353
MUTE
Q171
2
1
3 4
5
CE
CLK
DATA
COUNT
RST
C/D
CS
DATA
CLK
RESET
C/D
CS
SI
SCK
W-LED2
W-LED1
WAKE-UP
43
RESET
TU-MUTE
39
X1
38
X2
35
FM/AM SHIFT
19
TU ON
X801
5MHz
RESET
IC804
3.3V
POWER
CONTROL
Q802,811
1
2
6V
RADIO 6V
1 2 3 4
11 12
20
19
CE
CL
DI
DO
AM IN
FM IN
XOUT
XIN
13
MO/ST
10
IF IN
LPF2/MO-ST
LPF1/BAND
IF-OUT
ST-IND
OSC-OUT
7
BAND
8
ST-IND
18 LP-OUT
AM
OSC
AM
MIX
FM
MIX
FM
OSC
AM RF-IN
FM
RF-IN
RF-IN
FM
IF-IN
IF-IN
AM
IF-IN
IF-IN
X1
75kHz
FM/MW PLL
IC2
14
17
13
18
16
15
11
12
19
20
22
4
6
7
10
2
21
24
T1
T2
CF4
L2
L1
CT1
RADIO 6V
RADIO 6V
D1
D2
CT3
D3
L3
CT3,L3
AM
TRACKING
L4
AM FREQUENCY COVERAGE
CT1,L1
FM
TRACKING
L2
FM
FREQUENCY
COVERAGE
T2
FM
IF
T1
AM
IF
ANT1
FM
TELESCOPIC
ANTENNA
IF
BUFFER
AM
DET
FM
DET
IF CUT
AF
BUFFER
FM
MPX
MUTE
IF CUT
R-OUT
L-OUT
RADIO 6V
QUAD
FM/MW/LW FRONT-END, IF AMP,
FM MPX
IC1
L4
RADIO 6V
CF2
RADIO 6V
RADIO 6V
RADIO 6V
L3
AM
FERRITE-ROD
ANTENNA
RADIO 6V
AM
OSC
MIX-OUT
FM
RF-OUT
RF-OUT
FM OSC
DET-OUT
MPX-IN
VDD (SW)
D323
EEPROM
TU
LCD
LED DRIVE
Q815,816
LCD DRIVER
IC401
D403-410
WAKE-UP
Q814
FREQUENCY
SHIFT
Q812,813
(Page 19)
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