DOWNLOAD Sony CFD-V14 Service Manual ↓ Size: 1.43 MB | Pages: 31 in PDF or view online for FREE

Model
CFD-V14
Pages
31
Size
1.43 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cfd-v14.pdf
Date
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– 9 –
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
<        > : East European model only
[         ] : Italian model only
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
455kHz
AM FREQUENCY COVERAGE  ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
520kHz
[516kHz]
CT4
1,680kHz
[1,630kHz]
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
620kHz
CT3
1,400kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
10.7MHz
FM FREQUENCY COVERAGE  ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
87.0MHz
<64.0MHz>
[87.35MHz]
CT2
108.3MHz
<109.5MHz>
[108.25MHz]
VCO Adjustment
Procedure :
1. Connect the frequency counter to 4 and 7 pin of  IC 1 as
shown the figure below.
2. Turn the set to 98MHz.
3. Adjust RV1 for 75.95kHz – 76.05kHz reading frequency counter.
[ MAIN BOARD] (Conductor side)
Adjustment Location : Main board (See page 10)
FM  RF signal
generator
Carrier frequency : 98MHz 
Modulation : No modulation
Output level : 100dB 
µ
 (100mV )
set
telescopic
antenna
terminal
0.01
µ
F
 TUNER  SECTION
0dB = 1
µ
V
 AM Section
Function switch : AM
Volume
: MIN
 FM Section
Function switch : FM
Volume
: MIN
AM  RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to 
the set.
FM RF signal
generator
22.5kHz frequency deviation by 
400Hz signal.
Output level : as low as possible
telescopic
antenna
terminal
0.01
µ
F
set
32
Ω
J301 (phones)
level meter
frequency counter
33k
Ω
1
µ
F
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
87.0MHz
<68.0MHz>
[87.35MHz]
CT1
108.3MHz
<102.0MHz>
[108.25MHz]
Adjustment Location : Main board (See page 10)
– 10 –
Adjustment Location
L4 : AM Frequency Coverage Adjustment
L2 : FM Frequency Coverage Adjustment
L1 : FM Tracking Adjustment
T2 : AM IF Adjustment
T1 : FM IF Adjustment
RV1 : VCO Adjustment
[MAIN BOARD]
(Component side)
L3 : AM Tracking Adjustment
[MAIN BOARD]
(Conductor side)
CT1 : FM Tracking Adjustment
CT3 : AM Tracking Adjustment
CT4 : AM Frequency Coverage Adjustment
CT2 : FM Frequency Coverage Adjustment
 CD SECTION
• 
Note :
 Non Adjustment
How to put the set into CD Test Mode
1. Set the function switch to power off.
2. Set the function switch to CD while
≠ key and p key pressing.
The set is into CD test mode (
88 is displayed).
3. Turn the power off to release test mode.
– 11 –
Pin No.
Pin name
I/O
Description
1
SEIN
I
CD SENS input.
2
CNIN
I
CD SENS input.
3
DATO
O
CD DSP command data output.
4
XLTO
O
Latch output.
5
CLKO
O
Clock output for CD DSP command.
6
DV
SS
–
Digital ground.
7
DV
DD
–
Digital power supply (+5V).
8
MON
–
Not used (Open).
9
MDP
O
Spindle motor drive control.
10
MDS
–
Not used (Open).
11
LOCK
O
Lock signal output.
12
VPCO2
–
Not used (Open).
13
VPCO1
–
Not used (Open).
14
VCKI
–
Not used (Connect to !∞ pin).
15
V16M
–
Not used (Connect to !¢ pin).
16
VCTL
–
Not used (“H” level).
17
PCO
O
Decoder PLL phase comparator output.
18
FILI
I
Decoder PLL filter input.
19
FILO
O
Decoder PLL filter output.
20
AV
SS
–
Analog ground.
21
CLTV
I
Decoder PLL VCO control voltage input.
22
AV
DD
–
Analog power supply (+5V).
23
RF
I
CD RF signal input.
24
BIAS
I
Playback EFM asymmetry current constant input.
25
ASYI
I
Playback EFM asymmerty comparater voltage input.
26
ASYO
O
Playback EFM full swing output.
27
TEST1
I
Test terminal (Fixed at “L”).
28
TEST2
I
Test terminal (Fixed at “L”).
29
XRST
I
CD reset input.
30
XRSTO
O
CD reset output.   “L” : Reset
31
FOK
I
FOK signal input.
32
LRCK
O
L/R clock signal output.
33
LRCKI
I
L/R clock signal input.
34
PCMD
O
PCM data output.
35
PCMDI
I
PCM data input.
36
BCK
O
Bit clock signal output.
37
BCKI
I
Bit clock signal input.
38
GTOP
–
Not used (Open).
39
XPCK
–
Not used (Open).
40
GFS
–
Not used (Open).
41
RFCK
–
Not used (Open).
42
C2PO
–
Not used (Open).
43
DV
SS
–
Digital ground.
44
DV
DD
–
Digital power supply (+5V).
45
XROF
–
Not used (Open).
SECTION 6
DIAGRAMS
6-1. EXPLANATION OF IC TERMINALS
IC702  CD DIGITAL SIGNAL PROCESSOR, LED DRIVE, SYSTEM CONTROL (CXP401-601R)
– 12 –
Pin No.
Pin name
I/O
Description
46
MNT3
–
Not used (Open).
47
MNT1
–
Not used (Open).
48
MNT0
–
Not used (Open).
49
C4M
–
Not used (Open).
50
DOUT
–
Not used (Open).
51
EMPHI
–
Not used (Open).
52
WFCK
–
Not used (Open).
53
SCOR
–
Not used (Open).
54
SBSO
–
Not used (Open).
55
EXCK
–
Not used (Open).
56
DTEST
I
Test terminal (Fixed at “L”).
57
CTEST
I
Test terminal (Fixed at “L”).
58
FR
I
≠ key input.
59
PLAY/PAUSE
I
fl key input.
60
FF
I
± key input.
61
STOP
I
p key input.
62
MODE
I
PLAY MODE key input.
63
DISP/ENTER
I
DISPLAY/ENTER key input.
64
AU MUTE
O
Audio mute signal output.
65
BTL MUTE
O
BTL mute signal output.
66
SENSE2
I
CD SENSE input.
67
REC
I
Function REC input.
68
LIMIT SW
I
LIMIT switch input.
69
OPEN/CLOSE
I
CD door open/close switch input.
70
RMC
–
Not used (Fixed at “H”).
71
DV
SS
–
Digital ground.
72
DV
DD
–
Digital power supply (+5V).
73
SEG 15
–
Not used (Open).
74
SEG 14
–
Not used (Open).
75 – 88
SEG 1 – 13
O
LCD segment output.
89 – 92
COM 0 – 3
O
LCD common output.
93 – 95
VCL 1 – 3
I
LCD drive device voltage input.
96
AV
SS
1
–
Analog ground.
97
AV
DD
1
–
Analog power supply (+5V).
98
AOUT1
O
Audio output.
99
AIN1
I
Audio input.
100
LOUT1
O
L-CH audio output.
101
AV
SS
1
–
Analog ground.
102
XV
DD
–
Oscillator power supply (+5V).
103
XTAI
I
Oscillator connect terminal (16.9344MHz).
104
XTAO
O
Oscillator connect terminal (16.9344MHz).
105
XV
SS
–
Oscillator ground.
106
AV
SS
2
–
Analog ground.
107
LOUT2
O
R-CH audio output.
108
AIN2
I
Audio input.
109
AOUT2
O
Audio output.
110
AV
DD
2
–
Digital power supply (+5V).
111
AV
SS
2
–
Ground terminal.
112
NC
–
Not used (Open).
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