Sony CFD-E75 Service Manual ▷ View online
17
CFD-E75
Adjustment Location:
TP
(VT)
TP
(GND)
TP
(ANT)
– TUNER BOARD (Component Side) –
– TUNER BOARD (Conductor Side) –
L4
AM VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
AM Tracking Adjustment
CT3
L3
L3
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
CT1
– POWER BOARD (Conductor Side) –
1
4
CNP392
18
CFD-E75
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-E75
19
19
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – CD Section –
A
B
D
13
10
11
13
10
11
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
9
14
9
14
7
5
7
5
3
2
3
2
4
1
4
1
2
2
CNP701
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
5
9
7
3
4
6
10
12
1 CD-WRQ
8 CD DO
9 CD DI
7 CD CL
6 CD CE
5 CD-RES
8
10 CD DRF
11 CD FSEQ
*
WRQ
DO
DI
CL
CE
*
RES
DRF
FSEQ
5
9
7
3
4
6
10
12
8
CD L-OUT
CNP702
CNP323
20
CD DOOR
1
2
CNP801
S901
3
CNP322
(1/4)
TO MAIN
SECTION
SECTION
(Page 21)
A
SYSTEM
CONTROLLER
IC801
(1/3)
MAIN
BOARD
(1/4)
CD BOARD
R-CH
: CD PLAY
•
R-ch is omitted due to same as L-ch.
•
SIGNAL PATH
GENERAL-PURPOSE
PORTS
COMMAND
INTERFACE
INTERFACE
DRF
XOUT
XIN
X701
33.8688MHz
Z
PUSH OPEN/CLOSE
CFD-E75
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
AM
MIX
AM RF
IN
IN
FM/AM
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
LOUT
MPX
IN
IN
ROUT
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
AM VCO VOLTAGE
CT1, L1
FM TRACKING
T1
AM IFT
CT3, L3
AM TRACKING
LOW-PASS
FILTER
: FM
: AM
X1
75kHz
CT3
L3
AM FERRITE-ROD
ANTENNA
L1
FM RF
XOUT
XIN
AM IN
IF IN
ST
-IND
LP-OUT
LP-IN
FM IN
20
19
11
12
18
CT1
D1
L4
AM 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
PHASE
DETECTOR/
CHARGE PUMP
SHIFT REGISTER & LATCH
1/2
DI
CL
CE
DO
R-DATA
R-CLOCK
R-CE
R-COUNT
R-CH
CNP1
DET
OUT
ANT1
FM TELESCOPIC
ANTENNA
PD
IF OUT
ST IND
2
3
1
4
10
BAND
7
MO/ST
13
8
17
16
17
18
16
19
D2
D3
(1/2)
D3
(2/2)
8
9
7
10
TUNER BOARD
T1
AM IF
FROM MAIN
SECTION
(Page 21)
C
D11
D10
•
R-ch is omitted due to same as L-ch.
•
SIGNAL PATH
LOW-PASS
FILTER
11
2
R-MUTE
VT
6
L-CH
MAIN BOARD
(2/4)
(2/4)
6
1
TO MAIN
SECTION
SECTION
(Page 21)
B
12 BIT
PROGRAMMABLE
DIVIDER
L-CH
CNP322
(2/4)
CN321
(1/2)
T2
FM IFT
T2
FM IF
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