Sony CFD-S01 Service Manual ▷ View online
13
CFD-S01
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head
pinch roller
erase head
rubber belts
capstan
idlers
2. Demagnetize the record/playback head with a head demagnetizer.
(Do not bring the head magnetizer close to the erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the rated power
4. The adjustments should be performed with the rated power
supply voltage (9V) unless otherwise noted.
Torque Measurement
Mode
Torque meter
Meter reading
2.95 – 6.86 mN • m
FWD
CQ-102C
(30 – 70 g • cm)
(0.42 – 0.97 oz • inch)
FWD
0.15 – 0.53 mN • m
Back Tension
CQ-102C
(1.5 – 5.5 g • cm)
(0.021 – 0.076 oz • inch)
more than 5.88 mN • m
FF
CQ-201B
(more than 60 g • cm)
(more than 0.83 oz • inch)
more than 5.88 mN • m
REW
CQ-201B
(more than 60 g • cm)
(more than 0.83 oz • inch)
Tape Tension Measurement
Mode
Tension meter
Meter reading
FWD
CQ-403A
more than 100 g
(more than 3.53 oz)
TAPE SECTION 0 dB = 0.775 V
• Standard Output Level
Output terminal
HP OUT
load impedance
32
Ω
output signal level
0.25 V (–10 dB)
• Test Tape
Type
Signal
Used for
WS-48A
3 kHz, 0 dB
tape speed adjustment
Tape Speed Adjustment
Procedure:
Mode: playback
Procedure:
Mode: playback
Adjust so that the value on the digital frequency counter is
3,000 Hz.
3,000 Hz.
Specification Value:
Digital frequency counter
2,910 to 3,090 Hz
Adjust so that the frequency at the beginning and that at the end of
tape winding are between 2,910 to 3,090 Hz.
tape winding are between 2,910 to 3,090 Hz.
Adjustment Location:
i
jack (J321)
set
32
Ω
test tape
WS-48A
(3 kHz, 0 dB)
WS-48A
(3 kHz, 0 dB)
digital frequency
counter
counter
Tape speed adjustment
control inside motor
control inside motor
14
CFD-S01
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM FREQUENCY COVERAGE CHECK (CND, E92, MX)
Frequency Display
530 kHz
1,710 kHz
Reading on Digital voltmeter
0.8
± 0.05 V
5.3
± 0.7 V
Adjustment Part
L3
<confirmation>
AM FREQUENCY COVERAGE CHECK
(EXCEPT CND, E92, MX)
Frequency Display
531 kHz
1,611 kHz
Reading on Digital voltmeter
0.8
± 0.05 V
4.8
± 0.7 V
Adjustment Part
L3
<confirmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
ANT1
CT3
621 kHz
1,404 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
87.5 MHz
108 MHz
Reading on Digital voltmeter
1.5
± 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
Adjustment Location: See page 15.
• Abbreviation
CND : Canadian model
E92 : AC 120V area in E model
MX : Mexican model
E92 : AC 120V area in E model
MX : Mexican model
TUNER SECTION 0 dB = 1 µV
• AM Section
Setting:
RADIO BAND•AUTO PRESET button: AM
RADIO BAND•AUTO PRESET button: AM
• FM Section
Setting:
RADIO BAND•AUTO PRESET button: FM
RADIO BAND•AUTO PRESET button: FM
• Connecting Level Meter (FM, AM)
• Connecting Digital Voltmeter (FM, AM)
• 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.
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
30% amplitude
modulation by
400 Hz signal
modulation by
400 Hz signal
ANT2
FM RF signal
generator
generator
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
deviation by 1 kHz signal
output level : as low as possible
0.01
µ
F
set
i
jack (J321)
set
32
Ω
level meter
(range: 0.5–5 V ac)
(range: 0.5–5 V ac)
digital
voltmeter
voltmeter
100 k
Ω
TP (VT)
Ver. 1.2
15
CFD-S01
Adjustment Location:
L3: AM FREQUENCY COVERAGE
ADJUSTMENT
L2: FM FREQUENCY COVERAGE
ADJUSTMENT
CT1: FM TRACKING
ADJUSTMENT
ANT1: AM TRACKING
ADJUSTMENT
CT3: AM TRACKING ADJUSTMENT
L1: FM TRACKING ADJUSTMENT
T1: AM IF ADJUSTMENT
L6: FM IF ADJUSTMENT
CN702
CN701
– MAIN BOARD (Component Side) –
C67
C70
C21
R27
R14
C6
R4
R21
C9
R22
R10
C28
C46
C24
C25
C22
R17
R16
C40
R19
C20
C38
R25
C35
C45
C37
C4
R12
R3
IC1
R9
R29
C27
C42
C41
C26
C7
R24
R18
R20
D6
R28
R39
C32
R26
R899
R13
C34
R15
R23
C5
R7
R11
C3
R2
R1
C2
C1
C14
R5
R41
C13
C15
R6
C12
C36
C16
D1
D2
JW190
JW191
JW220
JW209
JW231
JW223
JW208
JW187
JW188
JW189
JW207
JW217
JW218
JW219
JW226
JW224
JW232
D4
D5
L6
C326
CF2
CF3
C30
T1
C17
C19
C43
C18
C39
C29
X1
L2
C23
L3
CT1
D3
CT3
JW184
JW183
C10
C11
L1
TP (VT)
TP (GND)
– MAIN BOARD (Conductor Side) –
ANT2
Test Point:
16
CFD-S01
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 ts and pin 4 (or
TP (RF) and TP (VREF)).
2. Insert the disc (PATD-012 (Tr 15)). (Part No. : 4-225-203-01)
3. Press the N X (CD) button.
4. Confirm that the oscilloscope waveform is as shown in the figure
3. Press the N X (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 ( ) 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)
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
and raise vertical sensitivity.
Test Point:
JC704
JC703
JC705
JC701
E C B
R712
R726
R703
R742
FB702
R702
R773
FB704
FB703
C708
C728
IC701
R725
R763
R746
C774
JC702
R783
R781
R728
R734
R782
R766
R736
R740
C720
C782
R744
R748
C705
R756
R774
R761
R762
R759
R755
R758
R760
R757
FB701
C718
Q703
R700
R714
R722
R717
R721
R701
R704
R713
C758
C730
C764
C731
C725
R754
C726
C727
C711
C713
C754
C757
C753
C748
C738
C735
C763
C712
C773
C766
C709
R743
C767
R709
R716
C752
R739
C751
C772
C706
FFC
JW195
JW194
JW196
JW201
JW180
JW192
JW202
JW193
RF
JW197
JW198
JW199
JW200
JW205
JW203
JW204
X701
C749
C759
C707
C716
C719
C747
C733
C704
C703
D703
D704
C761
R775
R776
C765
C769
C779
C755
R770
R768
R772
C750
C762
R708
R707
R706
R705
R711
C700
C710
R710
C777
R727
C717
TP701
TP702
TP703
C729
C745
C744
R715
1
13
14
26 27
39
40
52
TP (VREF)
TP (RF)
– MAIN BOARD (Conductor Side) –
RF level :
1.7
1.7
±
0.2 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
TIME/DIV : 500 nS
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