Sony CFD-S35CP Service Manual ▷ View online
13
CFD-S35CP
3-13. R/P HEAD (HRP301), ERASE HEAD (HE301), TC BOARD
3-14. MOTOR ASSY (M801), RF BELT
4
lug
5
two claws
1
R/P head (HRP301)
2
erase head (HE301)
3
screw
(+BVTT 2
×
4)
6
Remove the four solderings.
7
TC board
3
screw
6
screw
7
motor assy (M801)
8
motor bracket
5
RF belt
4
1
screw
(+P (B2.6
))
claw
2
protect chassis
14
CFD-S35CP
SECTION 4
MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads
pinch rollers
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.)
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)
0.15 – 0.53 mN • m
FWD
CQ-102C
(1.5 – 5.5 g • cm)
back tension
(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
Torque meter
Meter reading
more than100 g
FWD
CQ-403A
(more than 3.53 oz)
SECTION 5
ELECTRICAL ADJUSTMENTS
TAPE SECTION 0 dB=0.775V
• 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
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
15
CFD-S35CP
AM/MW IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
AM FREQUENCY COVERAGE ADJUSTMENT (CND, MX model)
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
530 kHz
1.0
±
0.05 V
Confirmation
1,710 kHz
5.3
±
0.7 V
AM FREQUENCY COVERAGE ADJUSTMENT
(EA, KR, SP, TH model)
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
531 kHz
1.0
±
0.05 V
Confirmation
1,611 kHz
4.8
±
0.7 V
AM TRACKING ADJUSTMENT (CND, MX model)
Adjust for a maximum reading on level meter
L3
620 kHz
CT3
1,400 kHz
AM TRACKING ADJUSTMENT (EA, KR, SP, TH model)
Adjust for a maximum reading on level meter
L3
621 kHz
CT3
1,404 kHz
MW FREQUENCY COVERAGE CONFIRMATION
(AEP, UK, CET, IT, RU model)
Frequency Display
Reading on Digital Voltmeter
531 kHz
0.9
±
0.4 V
1,611 kHz
5.2
±
0.5 V
MW TRACKING ADJUSTMENT (AEP, UK, CET, IT, RU model)
Adjust for a maximum reading on level meter
L3-1
621 kHz
CT3
1,404 kHz
LW FREQUENCY COVERAGE ADJUSTMENT
(AEP, UK, CET, IT, RU model)
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
Confirmation
153 kHz
0.6
±
0.05 V
L4
279 kHz
5.3
±
0.5 V
LW TRACKING ADJUSTMENT (AEP, UK, CET, IT, RU model)
Adjust for a maximum reading on level meter
L3-2
162 kHz
CT5
261 kHz
FM IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2
10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L2
108 MHz
3.0
±
0.2 V
Confirmation
87.5 MHz
1.3
±
0.3 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
87.5 MHz
CT1
108 MHz
Adjustment and Connecting Location:
TUNER board (See page 16)
TUNER board (See page 16)
TUNER SECTION 0 dB=1
µ
V
[AM/MW]
Setting:
Function: RADIO
Band: AM or MW or LW
Function: RADIO
Band: AM or MW or LW
[FM]
Setting:
Function: RADIO
BAND button: FM
Function: RADIO
BAND button: FM
•
Repeat the procedures in each adjustment several times, and
the tracking adjustments should be finally done by the trimmer
capacitors.
the tracking adjustments should be finally done by the trimmer
capacitors.
•
Remove FM antenna in FM adjustment.
AM/MW RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
modulation by
400 Hz signal
Output level:
as low as possible
Put the loop
antenna close to
the set.
antenna close to
the set.
+
–
–
level meter
set
32
Ω
i
jack (J321)
FM RF signal
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
+
–
–
level meter
set
32
Ω
0.01
µ
F
TUNER board
TP (GND)
TP (GND)
TUNER board
TP-ANT(JW2)
TP-ANT(JW2)
i
jack (J321)
digital voltmeter
TP (CV)
TP (GND)
100 k
Ω
TUNER board
Ver. 1.4
• Abbreviation
CND
: Canadian model.
CET
: East European and CSI model.
EA
: Saudi Arabia model.
IT
: Italian model.
KR
: Korean model.
MX
: Mexican model.
RU
: Russian model.
SP
: Singapore model.
TH
: Thai model.
16
CFD-S35CP
Adjustment and Connecting Location:
L3
AM TRACKING ADJUSTMENT
L3-2
LW TRACKING ADJUSTMENT
L3-1
MW TRACKING ADJUSTMENT
AM TRACKING ADJUSTMENT
L3-2
LW TRACKING ADJUSTMENT
L3-1
MW TRACKING ADJUSTMENT
CT1
FM FREQUENCY
COVERAGE
ADJUSTMENT
FM FREQUENCY
COVERAGE
ADJUSTMENT
L2
FM FREQUENCY
COVERAGE
ADJUSTMENT
FM FREQUENCY
COVERAGE
ADJUSTMENT
L4
AM/MW FREQUENCY COVERAGE
ADJUSTMENT
AM/MW FREQUENCY COVERAGE
ADJUSTMENT
CT5
LW TRACKING
ADJUSTMENT
LW TRACKING
ADJUSTMENT
CT3
AM/MW TRACKING
ADJUSTMENT
AM/MW TRACKING
ADJUSTMENT
TP-ANT
(JW2)
(JW2)
IC1
– TUNER BOARD (Component Side) –
TP
(GND)
TP
(CV)
TP-ANT
JW2
– TUNER BOARD (Conductor Side) –
L1
FM TRACKNG
ADJUSTMENT
FM TRACKNG
ADJUSTMENT
T1
AM IF
ADJUSTMENT
AM IF
ADJUSTMENT
T2
FM IF
ADJUSTMENT
FM IF
ADJUSTMENT
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