Sony CFD-E77L Service Manual ▷ View online
16
CFD-E77L
Adjustment Location:
TP
(VT)
TP
(GND)
TP
(ANT)
– TUNER BOARD (Component Side) –
– TUNER BOARD (Conductor Side) –
L4
LW VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
MW Tracking Adjustment
L3-1
CT3
LW Tracking Adjustment
CT5
L3-2
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
CT1
– POWER BOARD (Conductor Side) –
1
4
CNP392
17
CFD-E77L
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 to TP (RF) and TP (GND) on the CD
board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the
3. Press the
[ ]
(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 (
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: 500 ns
TIME/DIV: 500 ns
0.85
±
0.2 Vp-p
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
for AC range and raise vertical sensitivity.
Adjustment Location:
u
IC701
TP (GND)
TP
(RF)
– CD BOARD (Conductor Side) –
CFD-E77L
19
19
A
B
D
F
E
C
I-V AMP
DETECTOR
12
11
17
18
26
SL+
SL–
F–
F+
T+
T–
SPINDLE
MOTOR DRIVE
M701
(SPINDLE)
S701
(LIMIT)
SLED
MOTOR DRIVE
27
M702
(SLED)
FOCUS
COIL DRIVE
TRACKING
COIL DRIVE
SP+
SP–
3
25
9
19
FIN
TIN
SLIN
SPIN
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC702
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSS-213C)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
2
1
M
M
7
MUTE
AUTOMATIC
POWER
CONTROL
Q701
8
FIN2
7
FIN1
+
MIX
4
RF
LPF
EQ
PH
BH
10
TIN1
9
TIN1
A/D
SW
LPF
TRACK
JUMP
TBAL
80
LDD
APC
AUDIO
ADJUST
SERVO
PROCESSOR
RUPTURE
DETECT
79
LDS
SW
AGC
D/A
13
FE
15
TE
20
TDO
21
FDO
23
SLDO
22
SPDO
S/H
3
EFM
IN
IN
SLISE LEVEL
CONTROL
ERROR
CORRECTION
AUDIO CD
C1 – 2, C2 – 2
RAM
8FS
DIGITAL
FILTER
INTERPOLATION
MUTE
ATTENUATION
DEEMPHASIS
1 BIT
DAC
42
LCHO
45
RCHO
LPF
39
DOUT
AUDIO
OUT
FSEQ
PLL
VCEC
CLV, CAV
CONTROL
FRAME SYNC
DETECT,
PROTECT INSERT,
EFM DECODE
31
RAM
DRF
67
48
49
25
CONT4
72
CONT1
66
∗
RES
61
CE
62
CL
63
DI
64
DO
65
∗
WRQ
RF AMP, FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR,
CLV SERVO, D/A CONVERTER
IC701
1 CD-WRQ
8 CD DO
9 CD DI
7 CD CL
6 CD CE
5 CD-RES
10 CD DRF
11 CD FSEQ
20
CD DOOR
S901
(Page 21)
A
SYSTEM
CONTROLLER
IC801
(1/3)
R-CH
: CD PLAY
GENERAL-PURPOSE
PORTS
COMMAND
INTERFACE
INTERFACE
DRF
XOUT
XIN
X701
33.8688MHz
PUSH OPEN/CLOSE
CD L-OUT
R-ch is omitted due to same as L-ch.
SIGNAL PATH
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – CD Section –
CFD-E77L
20
20
6-2.
BLOCK DIAGRAM – TUNER Section –
2
24
4
7
20
21
FM
RF AMP
FM
MIX
FM
OSC
FM IF
AMP
IF
BUFFER
AF
BUFFER
AF
AMP
MPX
MUTE
STEREO/
MONO,
FM/AM
FM/AM
AM IF
AMP
FM
DET
AM
DET
DET
6
FM RF
IN
IN
22
AM
RF AMP
MW BAND
SELECT SWITCH
Q14
AM
MIX
AM RF
IN
IN
MIX OUT
OSC
OUT
OUT
CF2
10.7MHz
FM/AM PLL
IC2
CF4
450kHz
FM
RF OUT
RF OUT
10
QUAD
FM
IF IN
IF IN
12
15
11
L-OUT
MPX
IN
IN
R-OUT
13
AM
IF IN
IF IN
LPF1/BAND
AM OSC
FM OSC
FM/AM RF AMP, MIX, OSC,
FM/AM IF AMP, DET, MPX
IC1
L2
FM VCO VOLTAGE
L4
LW VCO VOLTAGE
CT1, L1
FM TRACKING
T1
AM IFT
LOW-PASS
FILTER
LOW-PASS
FILTER
: FM
: MW/LW
X1
75kHz
CT3
L1
FM RF
XOUT
XIN
AM IN
IF IN
ST
-IND
LP-OUT
LP-IN
FM IN
21
20
11
12
18
MW/L
W
6
CT1
D1
L4
MW/LW OSC
L2
FM OSC
LEVEL
DET
ST
IND
14
LPF2/MO-ST
AM
OSC
BUFFER
BUFFER
SWALLOW
COUNTER
UNIVERSAL
COUNTER
CCB
INTERFACE
REFERENCE
DIVIDER
UNLOCK
DETECT
12 BIT
PROGRAMMABLE
DIVIDER
PHASE
DETECTOR/
CHARGE PUMP
SHIFT REGISTER & LATCH
1/2
BAND
DI
CL
CE
DO
DET
OUT
ANT1
FM TELESCOPIC
ANTENNA
PD
IF OUT
ST IND
2
3
1
4
10
9
BAND
7
MO/ST
13
8
17
16
17
18
16
19
CT5
D2
D3
(1/2)
D3
(2/2)
AM HIGH
CUT
SWITCH
Q12
T1
AM IF
Q43
Q42
Q41
B+
Q41, 42
MW SWITCH
L3-1
MW
L3-2
LW
L3
MW/LW FERRITE-ROD
ANTENNA
MW
TRACKING
CT3, L3-1
LW
TRACKING
CT5, L3-2
Q44
LW
SWITCH
Q43
LW SWITCH
R-DATA
R-CLOCK
R-CE
R-COUNT
R-CH
(Page 21)
R-MUTE
TU L-OUT
(Page 21)
B
T2
FM IFT
T2
FM IF
D10
D11
D
(Page 21)
C
R-DATA, R-CLOCK,
R-CE, R-COUNT
TC POWER
B+
D321
CONSTANT
CURRENT
Q61
R-ch is omitted due to same as L-ch.
SIGNAL PATH
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