Sony CFD-S26 Service Manual ▷ View online
17
CFD-S26
TP
(FE)
TP
(TE)
TP
(FE)
TP
(RF)
TP
(VREF)
– CD board (conductor side) –
TP
(RF)
TP
(VREF)
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 (VREF).
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the CD N X button.
4. Confirm that the oscilloscope waveform is as shown in the
3. Press the CD N X 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 (VT)
(CONDUCTOR SIDE)
CT1
CT3
L1
L2
T2
T1
L3
– MAIN board (component side) –
TP (JW1)
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
18
CFD-S26
6-1. IC PIN DESCRIPTION
• IC802 uPD789477-907 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Pin Description
1, 2
NC
—
Not used. (Open)
3 – 5
VLC2 – 0
O
LCD drive voltage output
6 – 9
COM0 – 3
O
LCD drive common output
10 – 26
S0 – 16
O
LCD drive segment output
27 – 29
S17 – 19
O
LCD drive segment output Not used. (Open)
30
BL-CONT
—
Not used. (Open)
31
A-MUTE
O
Audio mute output H: Mute
32
WB/FM.AM.TV
O
Tuner output level attenuator switch Not used. (Open)
33
DBB
O
MEGA BASS control output H: MEGA BASS off, L: MEGA BASS on
34
P-CON
O
System power control output H: PCON
35
AC-CHK
I
AC power supply detection signal input “L”: AC in
36
CD
O
CD function output H: CD
37
TAPE
O
Tape function output H: Tape
38
AVDD
—
Analog power supply pin for A/D converter (+3.3 V)
39
BTT-CHK-H
I
Battery check input for Hi-voltage
40
BTT-CHK-M
I
Battery check input for Mid-voltage
41
REC
I
Tape record signal input H: REC
42 – 45
KEY1 – 4
I
Key input
46
MODE CHK
I
Mode set input
47
AGND
—
Analog GND for A/D converter
48
REMOTE
I
Sircs receiver data input
49
TC-PLAY
I
Tape play switch input L: Tape
50
WP/INI
O
Initial set signal output
51
CD-DOOR
I
CD door open/close switch input L: Close
52
C-WRQ
I
CD command data input
53
C-DOUT
I
CD sireal data input
54
C-DIN
O
CD sireal data output
55
C-CLK
I
Serial data transfer clock signal input
56
R-COUNT
I
Tuner PLL data input
57
R-DATA
O
Tuner PLL data output
58
R-CLK
O
Tuner PLL clock output
59
R-LAT
O
Tuner PLL latch output
60
B-MUTE
O
Tuner mute signal output H: Mute
61
C-DRF
I
CD DRF signal input
62
C-CE
O
CD SENSE read clock output
63
C-FSEQ
I
CD frame SYNC input
64
C-XRT
O
CD system reset output
65
V-LAT
O
Volume latch output Not used. (Open)
66
V-DATA
O
Volume data output
67
V-CLK
O
Volume clock output
68
SUR
O
Surround switch signal output Not used. (Open)
69
ICO
—
Connected to GND
70
XT1
I
Sub system oscillation input (32.768 kHz)
71
XT2
O
Sub system oscillation output (32.768 kHz)
72
VDD
—
Main power supply pin for A/D converter (+3.3 V)
73
VSS
—
Main GND
74
X1
I
Main system oscillation input (4.19 MHz)
SECTION 6
DIAGRAMS
CFD-S26
19
19
Pin No.
Pin Name
I/O
Pin Description
75
X2
O
Main system oscillation output (4.19 MHz)
76
RST
I
System reset input
77
ISS1
O
ISS1 output Not used. (Open)
78
ISS2
O
ISS2 output Not used. (Open)
79
SCL
O
EEPROM clock output
80
SDA
I/O
EEPROM input/output
6-2. CIRCUIT BOARDS LOCATION
CONTROL (1) board
CONTROL (2) board
CONTROL (3) board
CD board
BATTERY TERMINAL (2) board
BATTERY TERMINAL (1) board
MAIN board
PRE board
POWER (1) board
POWER (2) board
VOLTAGE SELECT board
(E4 model only)
(E4 model only)
CFD-S26
20
20
6-3. BLOCK DIAGRAM — CD SECTION (FORMER TYPE) —
A
C
B
E
F
D
A
C
B
D
LD
PD
E
T+
T–
F+
F–
F–
SL+
SL–
SL–
SP+
SP–
F
VREF
LD
PD
LD POWER
CONTROLLER
Q701
APC
FIN2
FIN1
LDD
LDS
TIN1
TE
TIN2
VREF
12
CNP701
10
11
13
7
5
14
16
9
3
2
4
1
RF
9
10
11
80
7
79
4
8
9
12
11
TRACKING
COIL
DRIVE
19
7
FOCUS
COIL
DRIVE
TIN
FIN
25
SLIN
SLED
MOTOR
DRIVE
3
SPINDLE
MOTOR
DRIVE
SPIN
VREF
OPIN
MUTE
T+
T–
17
18
F+
F–
26
27
SL+
SL–
2
1
SP+
SP–
TRACKING
COIL
FOCUS
COIL
OPTICAL PICK-UP
BLOCK
(KSS-213C)
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
1
3
67
TDD
TD
FD
SP
SL
31
72 25
66
63 61 62
49
48
65 64
42
45
RF AMP,
SYSTEM SERVO PROCESSOR,
DIGITAL SIGNAL PROCESSOR
IC701
39
51
61 63
54 62 55 52 53
64
X701
33.86MHz
C-CE
C-DIN
C-CLK
C-WRQ
C-XRT
C-DRF
C-FSEQ
C-DOUT
CD DOOR
CD
BTT-CHK-H
34
P-CON
35
AC-CHK
SYSTEM CONTROLLER
IC802 (1/2)
CD +6.9V
SWITCH
Q817,818
BATTERY
CHECK
Q804,806
POWER
CONTROLLER
Q819,D802
AUDIO+6V
REG
Q955,D953
+3.3V REG
IC801
POWER
SWITCH
Q952,953
POWER
SWITCH
Q951
CD +3.3V
REG
Q957
CD 3.3V
CD 6V
CD
KH803
2
1
S801
PUSH
OPEN/
CLOSE
1
1
4 3
10
9
8
7 6
2
2
3
3
1
3
1
3
CNP902
BATT.COM
AC-HI
VDD
KH321
Q801
3.3V
VDD(SW)
RADIO 6V
CNP903(1/2)
CNP903(2/2)
CNP901
BATTERY
TERMINAL(1)
BOARD
4
1
2
D901 - 904
F902
T901
POWER
TRANSFORMER
CNJ901
AC IN
CNP904
CD BOARD
MAIN BOARD (1/2)
POWER (1)
BOARD
POWER (2)
BOARD
BATTERY
TERMINAL(2)
BOARD
Signal path
: CD
R-ch : same as L-ch.
Abbreviation
AUS : Australian model
SP : Singapore model
E92 : AC 120V area in E model
AUS : Australian model
SP : Singapore model
E92 : AC 120V area in E model
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
LPF
SLICE
LEVEL
CONTROL
GENERAL
PURPOSE
PORT
COMMAND
INTERFACE
INTERFACE
CLOCK
GENERATOR
23
15
11 12
5
6
7
8 9 10
CNP804(1/2)
DRF
FSEQ
XRT
DIN
CE
CL
WRQ
DOUT
5
FD
SL
SP
TD
VREF
CNP702(1/2)
VREF
VREF
CNP702(2/2)
CNP804(2/2)
CD R
CNP806(1/3)
12
3
3
CD_IN_ L
DRY BATTERY
SIZE " D "
(IEC DESIGNATION R20)
6PCS,9V
4.5V
4.5V
D/A
CONVERTER
PH/BH
40
BTT-CHK-M
20
FDD
SPDO
SLDO
21 22 23
1
2
1
2
KH903
KH905
2
3
2
D952
D951
US, E, AUS
MODEL
SP MODEL
SP MODEL
RECT
CD DOOR
SWITCH
Q820
SP MODEL
AUS,SP MODEL
US,E92 MODEL
(Page 21)
(Page 21)
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