DOWNLOAD Sony CFD-S26L / CFD-S36L Service Manual ↓ Size: 4.91 MB | Pages: 46 in PDF or view online for FREE

Model
CFD-S26L CFD-S36L
Pages
46
Size
4.91 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cfd-s26l-cfd-s36l.pdf
Date

Sony CFD-S26L / CFD-S36L Service Manual ▷ View online

13
CFD-S26L/S36L
digital
voltmeter
100 k
TP (VT)
i
 jack (J321)
set
32 
level meter
(range: 0.5–5 V ac)
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
TP (JW2)
FM RF signal
generator
0.01 
µF
set
  TUNER SECTION     0 dB = 1 µV
• FM Section
Setting:
RADIO (BAND) button: FM
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
• AM Section
Setting:
RADIO (BAND) button: MW or LW
30% amplitude
modulation by
400 Hz signal
• Connecting Level Meter (FM, MW and LW)
• Connecting Digital Voltmeter (FM, MW and LW)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
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
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
MW FREQUENCY COVERAGE
CHECK
Frequency Display
531 kHz
1,611 kHz
Reading on Digital voltmeter
1.0 ± 0.5 V
5.2 ± 0.6 V
Adjustment Part
<confirmation> <confirmation>
MW TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-1
CT3
621 kHz
1,404 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
153 kHz
279 kHz
Reading on Digital voltmeter
0.6 ± 0.3 V
5.0 ± 0.1 V
Adjustment Part
<confirmation>
L4
LW TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-2
CT5
162 kHz
261 kHz
Adjustment Location: See page 14.
14
CFD-S26L/S36L
TP
(RF)
TP
(VREF)
TP
(RF)
TP
(VREF)
– CD board (conductor side) –
TP
(FE)
TP(TE)
TY
TX
Adjustment Location:
  CD SECTION
CD section adjustments are done automatically in this set.
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
figure below. (eye pattern)
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 
± 0.2 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
L4
CT5
TP (VT)
CT1
CT3
L1
L2
T2
TP (JW2)
T1
L3-1
L3
L3-2
L4
LW
FREQUENCY
COVERAGE
ADJUSTMENT
L2
FM
FREQUENCY
COVERAGE
ADJUSTMENT
CT3, L3-1
MW
TRACKING
ADJUSTMENT
CT5, L3-2
LW
TRACKING
ADJUSTMENT
CT1, L1
FM
TRACKING
ADJUSTMENT
T1
MW
IF
ADJUSTMENT
T2
FM
IF
ADJUSTMENT
– MAIN board (component side) –
CFD-S26L/S36L
15
15
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
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)
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
78
ISS2
O
ISS2 output
79
SCL
O
EEPROM clock output
80
SDA
I/O
EEPROM input/output
6-2. CIRCUIT BOARDS LOCATION
SECTION 6
DIAGRAMS
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
CFD-S26L/S36L
16
16
6-3. BLOCK DIAGRAM — CD SECTION —
A
C
B
E
F
D
A
C
B
D
LD
PD
E
T+
T–
F+
F–
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 +6V
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.
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
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
D955
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