Sony CFD-CD777SMK2 Service Manual ▷ View online
17
CFD-CD777SMK2
Procedure:
1. Keep the set horizontal.
1. Keep the set horizontal.
If the set is not horizontal, this adjustment cannot be per-
formed due to the gravity against the 2-axis device.
formed due to the gravity against the 2-axis device.
2. Put the disc (YEDS-18) and press NX button.
3. Connect the oscilloscope to solder bridge (FOCUS) and TP
3. Connect the oscilloscope to solder bridge (FOCUS) and TP
(VC) on MAIN board.
4. Adjustment RV702 on MAIN board so that the waveform is
as shown in the figure below. (FOCUS gain adjustment)
• Incorrect Examples (DC level changes more than on adjusted
waveform)
)
(
VOLT/DIV: 100 mV
TIME/DIV: 2 ms
TIME/DIV: 2 ms
100 mV
0 V
VOLT/DIV: 100 mV
TIME/DIV: 2 ms
TIME/DIV: 2 ms
200 mV
0 V
VOLT/DIV: 100 mV
TIME/DIV: 2 ms
TIME/DIV: 2 ms
75 mV
0 V
low focus gain
high focus gain
5. Connect oscilloscope to solder bridge (TRACKING) and TP
(VC) on MAIN board.
6. Adjust RV704 on MAIN board so that the waveform is as
shown in the figure below. (Tracking gain adjustment)
VOLT/DIV: 1 V
TIME/DIV: 2 ms
TIME/DIV: 2 ms
0 V
• Incorrect Examples (fundamential wave appears)
VOLT/DIV: 1 V
TIME/DIV: 2 ms
TIME/DIV: 2 ms
0 V
VOLT/DIV: 1 V
TIME/DIV: 2 ms
TIME/DIV: 2 ms
0 V
low tracking gain
high tracking gain
high fandamential wave
than for low gain
high fandamential wave
than for low gain
)
(
18
CFD-CD777SMK2
Adjustment Location:
L3
IC703
RV704 Tracking Gain Adjustment
RV702 Focus Gain Adjustment
RV701 Focus Bias Adjustment
RV703 E-F Balance Adjustment
(FOCUS)
TP (VC)
(TRACKING)
IC701
– MAIN BOARD (Component Side) –
– MAIN BOARD (Conductor Side) –
CFD-CD777SMK2
19
19
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – TUNER Section –
L3
MW FERRITE-ROD
ANTENNA
ANT1
FM/SW
TELESCOPIC
ANTENNA
L5
SW1
ANT
L7
SW2
ANT
CT3
CT5
CT7
S1 (6/8)
TU REG
B+
S1 (8/8)
S1 (7/8)
MW
SW2
SW1
FM
S1
BAND
MW
SW2
SW1
FM
S1
BAND
B.P.F.
FL1
S1 (5/8)
18
20
16
13
19
24
22
FM
FRONT-END
FM IF/
DISCRI
DECORDER
AMP
SWITCH
REGURATOR
1/2
COUNTER
1/2
COUNTER
AM IF/
DET
PD1
VCO
PD2
AM
FRONT-END
FINE TUNIG
CONTROL
Q1
MUTING
Q4, 5, 7, 8
FUNCTION
MUTING SWITCH
Q6
BAND
SELECTOR
Q2
14
FM RF
IN
IN
FM/AM
OUT
CF1, 2
CF4
VCC
T1
AM IF
FM
RF
RF
26
FM
DISCRI
DISCRI
FM
IF IN
IF IN
6
5
L-CH
OUT
R-CH
OUT
R-CH
TUNER L-CH
4
27
29
1
2
3
ST IND
AM
IF IN
IF IN
DET LPF
15
BAND
SELECT
PILOT
PLL
LPF
PLL
LPF
VCO
RV2
AM OSC
CT4
L4
MW OSC
L8
SW2 OSC
L6
SW1 OSC
CV4
RV1
FM OSC
AM RF
IN
IN
21
REG
OUT
OUT
TU REG
B+
L2
FM OSC
L1
FM RF
CF3
FM/AM FRONT-END,
FM/AM DET, MPX
IC1
CV3
CT1
CT8
CT6
S1 (3/8)
S1 (4/8)
S1 (2/8)
CV1
FM FREQUENCY
COVERAGE
CT2, L2
MW FREQUENCY
COVERAGE
CT4, L4
SW2 FREQUENCY
COVERAGE
CT8, L8
SW1 FREQUENCY
COVERAGE
CT6, L6
CT2
CV2
FINE TUNING
S305 (2/2)
ISS, FM MODE
D328
FM STEREO
+
FM VCO
L.P.F.
+
TUNER B+
D6
D3
MONO (3)
ST (2)
ST (1)
S1 (1/8)
MW
SW2
SW1
FM
S1
BAND
MW
SW2
SW1
FM
S1
BAND
TUNER MUTE
AM IF
CT1, L1
FM TRACKING
CT3, L3
MW TRACKING
CT5, L5
SW1 TRACKING
CT7, L7
SW2 TRACKING
+
• SIGNAL PATH
: AM
: FM
• R-ch is omitted due to same as L-ch.
C
(Page 21)
D
(Page 22)
CFD-CD777SMK2
20
20
6-2.
BLOCK DIAGRAM – CD Section –
OPTICAL PICK-UP
(KSS-213R)
DETECTOR
A
D
B
C
I-V
AMP
A
D
C
35
PD1
36
PD2
F
E
F
E
FOCUS BIAS
37
FE BIAS
RF AMP
RF AMP
RF AMP,
FOCUS/TRACKING/SLED SERVO
IC701
LASER DIODE
LD
38
F
39
E
40
EI
PD
AUTOMATIC
POWER CONTROL
Q701
33
LD
LASER ON SWITCH
Q703
LD
AMP
PD
AMP
34
PD
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
TRK+
TRK–
FCS+
FCS–
7
T+
6
T–
28
F+
27
F–
TRACKING
COIL DRIVE
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC703
FOCUS
COIL DRIVE
SLED MOTOR
DRIVE
M
10
SL+
9
SL–
SPINDLE MOTOR
DRIVE
M
24
SPO
M902
(SLED)
M901
(SPINDLE)
SPINDLE
MOTOR
DRIVE
15
12
FOCUS
ERROR
AMP
1
FEO
RV701
E-F BALANCE
RV703
FOCUS GAIN
RV702
TRACKING
GAIN
MUTING
Q705, 706
MUTING
CONTROL SWITCH
Q702, 704
REMOTE CONTROL
RECEIVER
IC851
RV704
2
FEI
FOCUS PHASE
COMPENSATION
6
FEO
TRACKING
ERROR
AMP
E I-V
AMP
AMP
F I-V
AMP
AMP
42
TEO
44
TEI
TRACKING PHASE
COMPENSATION
13
14
TEO
SLED
AMP
16
SLO
SL+
RF
SUMMING
AMP
31
30
RFO
RFI
MIRR
AMP
DEFECT
AMP
FOCUS OK
COMPARATOR
FOCUS OK
AMP
25
FOK
TTL
IIL
I
2
L DATA REGISTER
TTL
IIL
IIL
TTL
21
19
20
22
DATA
CLK
XLT
XRST
56
59
57
DATO
CLKO
XLTO
1
FOK
SENS
C.OUT
24
23
54
55
SEIN
CNIN
50 XRST
7 12 9
8
FILTER
14
RF
ASYMMETRY
CORRECTION
CORRECTION
DIGITAL PLL
EFM
DEMODULATOR
FILO
CLTV
PCO
FILI
CLOCK
GENERATOR
35
34
XTAI
XTAO
EMPH
X701
16.9344MHz
INTERNAL BUS
D/A
INTER-
FACE
22
21
20
5
6
8
48
2
PCMD
BCK
LRCK
DATA
BCK
LRCK
EMPH
LO
RO
R-CH
CD L-CH
1 MUTE
18 XI
12
22
RSTN
MUTE
16k
RAM
ERROR
CORRECTOR
SERVO AUTO
SEQUENCER
DIGITAL
CLV
SUB-CODE
PROCESSOR
CPU
INTERFACE
3
2
4
MON
MDP
MDS
46 47 49 51 53 52 43 44
SQSO
SQCK
SENS
DATA
CLOK
XLAT
SCOR
SBSO
SPOA
60
8
5
3 11 9 10 4
27
40
GFS
DIGITAL SIGNAL
PROCESSOR, CLV SERVO
IC702
DIGITAL FILTER,
D/A CONVERTER
IC704
SYSTEM CONTROLLER, LCD DRIVER
IC801
X702
4.019MHz
12
34 LDON
XRST
62
61
EXTAL
60
19
XTAL
COM0 – COM3
SEG0 – SEG13
S801 – S806
MODE
20
DISP
21
K-PLAY
22
K-STOP
23
K-FR
24
K-FF
S702
(LIMIT)
ON: When the optical pick-up is
inner position.
B
5
TIN
29
FIN
11
SLIN
25
SPI
MUTE
D704
20
22
21
SPIN
SP+
SP–
+
RST
REC
SQSO
SQCKO
SENS
DATA
CLOK
XLAT
SCOR
28
C-MUTE
14
REC
RST
DOOR
15
S701
(CD LID OPEN/CLOSE DET)
(ON: When the CD lid is closed)
14
54 – 51
50 – 37
LCD801
LIQUID CRYSTAL DISPLAY
64
RMC-S
A
(Page 21)
B
(Page 21)
• SIGNAL PATH
: CD
• R-ch is omitted due to
same as L-ch.
Click on the first or last page to see other CFD-CD777SMK2 service manuals if exist.