Sony CFD-W57L Service Manual ▷ View online
– 17 –
TUNER SECTION 0 dB = 1
µ
V
• FM Section
Setting:
BAND switch: FM
BAND switch: FM
22.5 kHz frequency
deviation by 400 Hz signal
Output level : as low as possible
deviation by 400 Hz signal
Output level : as low as possible
• MW/LW Section
Setting:
BAND switch: MW or LW
BAND switch: MW or LW
30% amplitude
moudulation by 400 Hz signal
Output level : as low as possible
moudulation by 400 Hz signal
Output level : as low as possible
• Connecting Level Meter (FM, MW and LW)
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
87.5 MHz
108 MHz
(65 MHz)
Reading on Digital voltmeter
1.4
±
0.2 V
3.5
±
0.1 V
(7.3
±
0.2 V)
Adjustment Part
<confirmation>
L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
87.5 MHz (68 MHz)
108 MHz (102 MHz)
MW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
531 kHz
1,611 kHz
Reading on Digital voltmeter
0.9
±
0.1 V
5.7
±
0.1 V
Adjustment Part
L4
CT2
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-1
CT4
621 kHz
1,404 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
153 kHz
279 kHz
Reading on Digital voltmeter
0.6
±
0.15 V
5.7
±
0.1 V
Adjustment Part
<confirmation>
CT3
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-2
CT5
162 kHz
261 kHz
( ) : East European model
Adjustment Location: See page 18.
antenna terminal
(FH1)
(FH1)
FM RF signal
generator
generator
0.01
µ
F
set
digital
voltmeter
voltmeter
100 k
Ω
JW44
TP (VT)
phones jack
set
32
Ω
level meter
(range: 0.5-5 V ac)
(range: 0.5-5 V ac)
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
• 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.
done by the trimmer capacitors.
– 18 –
Adjustment Location: tuner board
–tuner board (component side)–
MW
FREQUENCY
COVERAGE
ADJ
CT3
LW
FREQUENCY
COVERAGE
ADJ
FM
TRACKING
ADJ
JW44
TP (VT)
CT1
L2
FM
FREQUENCY
COVERAGE
ADJ
L1
LW
TRACKING
ADJ
CT5
L3-2
CT2
L4
MW
TRACKING
ADJ
CT4
L3-1
FH1
ANTENNA
TERMINAL
CD SECTION
CD section adjustments are done automatically in this set.
– 19 –
5-1. IC PIN DESCRIPTION
• IC801 CXP83120A-029Q (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
C-SCOR
I
CD SCOR input
2
W/UP
I
Wake-up input
3
RMC
I
Sircs receiver input
4
OPEN-O
O
CD loading motor control output (Eject direction)
5
CLS-O
O
CD loading motor control output (Loading direction)
6
OPEN-I
I
CD open switch input
7
CLS-I
I
CD close switch input
8
—
—
Not used.
9
C-SENS1
I
CD SENSE-1 input
10
C-SENS2
I
CD SENSE-2 input
11
C-SQCK
O
CD Sub-Q read clock output
12
C-SQSO
I
CD Sub-Q data input
13
—
—
Not used.
14
C-XRST
O
CD reset output
15
C-XLAT
O
CD serial latch output
16
C-CLK
O
CD serial clock output
17
C-DATA
O
CD serial data output
18
R-ST
O
Stereo ingicator output
19
R-DATA
O
Tuner PLL data output
20
R-CLK
O
Tuner PLL clock output
21
R-COUNT
I
Tuner PLL data input
22
R-CE
O
Tuner PLL chip enable output
23
P.CON
O
System power control output
24
V-DATA
O
Volume serial data output
25
V-CLOCK
O
Volume serial clock output
26
V-CE
O
Volume serial chip enable output
27
REG-CHK
I
Low voltage detection input
28
BL-CONT
O
Back light control output
29
REC
I
Tape record signal input
30
INI
O
Tuner select initial setting output
31
SET 9k/10k
I
Tuner band 9k/10k select input
32
VERSION
I
Tuner destination band select input
33 – 36
KEY-1 – 4
I
Key input
37
SFT-CLK
O
Shift clock output
38
RESET
I
System reset input
39
EXTAL1
I
Oscillation input (4.19 MHz)
40
XTAL1
O
Oscillation output (4.19 MHz)
41
VSS
—
GND
42
XTAL2
—
Not used.
43
EXTAL2
—
Not used (Conected to GND).
44
AVREF
I
A/D converter VREF input
45
AVSS
—
Analog GND
46
VL
O
LCD drive port ON/OFF output
47 – 49
VLC-3 – 1
O
LCD drive voltege terminal
50 – 53
COM0 – 3
O
LCD drive common output
54 – 76
SEG0 – 22
O
LCD drive segment output
77 – 80
—
—
Not used.
81, 82
NC
—
Not used.
83
ROCK-LED
O
Not used.
84
POP-LED
O
Not used.
85
LIVE-LED
O
Not used.
SECTION 5
DIAGRAMS
– 20 –
Pin No.
Pin Name
I/O
Pin Description
86
VOCAL-LED
O
Not used.
87, 88
NC
—
Not used.
89
VDD
—
Power supply pin (+5 V)
90
NC
—
Not used.
91
VSS
—
GND
92
TX
O
Oscillation output (32.768 kHz)
93
TXE
I
Oscillation input (32.768 kHz)
94
ISS1
O
Tape ISS1 control output
95
ISS2
O
Tape ISS2 control output
96
A-MUTE
O
Audio mute output
97
R-MUTE
O
Tuner mute output
98
C-MUTE
O
CD mute output
99
TC2
I
Tape play switch input (Deck A)
10
TC1
I
Tape play switch input (Deck B)
5-2. CIRCUIT BOARDS LOCATION
MAIN board
LCD board
BACK UP board
BATTERY board
POWER board
HEADPHONE board
LOADING board
CD board
RADIO BRACKET board
TUNER board
HEADPHONE
BRACKET board
BRACKET board
RECORD/PLAYBACK
SWITCH board
SWITCH board
LAMP board
CONTROL board
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