Sony CFD-V3 / CFD-V7 / CFD-V7L Service Manual ▷ View online
7
CFD-V3/V7/V7L
3-6. PRE BOARD, MECHANISM DECK, OPTICAL PICK-UP SECTION, CD BOARD
0
Screws
+BVTP 3
×
10
5
Screw
+BVTP 3
×
10
MAIN board
2
Remove solder
(five places)
FM SW board
6
KH801
S801
7
Wire, parallel (CN802)
(15 core)
4
Remove solder
(four places)
VOLUME board
Cabinet(upper)
1
Screws
+BVTP 3
×
10
3
qa
9
Wire, parallel (CNP305)
(10 core) (V3, V7)
(12 core) (V7L)
(12 core) (V7L)
8
CNP304
3-5. VOLUME BOARD, FM SW BOARD, MAIN BOARD
Optical pick-up section
CD board
Mechanism deck
PRE board
1
Screw
+BVTP 3
×
10
1
Screws +BVTP 3
×
10
3
Screw +BVTT 2
×
6
5
Screws +PWH 2.6
×
10
5
Screws
+PWH 2.6
×
10
8
Screw
+BVTT 2
×
6
0
Wire, parallel (CNP701)
(16 core)
7
Remove solder
(four places)
6
2
9
4
Cabinet(upper)
Ver 1.1 2001.04
8
CFD-V3/V7/V7L
3-7. BELT, M601 (CAPSTAN / REEL MOTOR), “ HRP901 HEAD, MAGNETIC (RECORD/PLAYBACK) ”,
HE901 HEAD (ERASE)
Mechanism deck
HE901 Head (Erase)
HRP901 Head, Magnetic (Record/ Playback)
1
Screws
+B 2.6
× 5
7
Claws
5
Claws
4
M601
(Capstan/reel motor)
2
3
Belt
8
6
Ver 1.1 2001.04
3-8. OPTICAL PICK-UP (KSS-213C)
4
1
2
5
3
Bend the stopper
Chassis ASSY, motor (MB) (spindle)
Shaft, sled
Claws
Claw
Claw
Claw
Cover, CD
Gear
Optical pick-up (KSS-213C)
9
CFD-V3/V7/V7L
SECTION 4
DIAL POINTER INSTALLATION
Note : Follow the installation procedure in the numerical order given.
1
Align the pointer with the groove of “cabinet (front) sub ASSY” and insert it as shown in the illustration.
2
Align knob (TU) with “cabinet (front) sub ASSY” and fasten the screw.
3
Turn the knob (TU) fully in the direction of the allow as shown in the illustration.
4
Turn the tuning capacitor gear fully in the direction of the allow as shown in the illustration.
5
Fasten the “cabinet (front) sub ASSY” and cabinet (rear) with the screws.
1
Pointer
knob (Tu)
Cabinet (front) sub ASSY
2
Screw (+BVTP 2.6
×
8)
3
Tuning knob
4
Tuning capacitor gear
5
Cabinet (rear)
10
CFD-V3/V7/V7L
5-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head
pinch roller
erase head
rubber belts
capstan
2. Demagnetize the record/playback head with a head demagne-
tizer. (Do not bring the head demagnetizer close to the erase
head.)
head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the rated power sup-
4. The adjustments should be performed with the rated power sup-
ply voltage (9V) unless otherwise noted.
Torque Measurement
Torque
Torque Meter
Meter Reading
1.77 – 5.88 mN•m
Forward
CQ-102C
(18 – 60 g•cm)
(0.25 – 0.83 oz•inch)
Forward
0.1 – 0.49 mN•m
Back Tension
CQ-102C
(1.0 – 5.0 g•cm)
(0.014 – 0.069 oz•inch)
4.42 – 9.31 mN•m
Fast Forward
CQ-201B
(45 – 95 g•cm)
(0.62 – 1.32 oz•inch)
4.42 – 9.31 mN•m
Rewind
CQ-201B
(45 – 95 g•cm)
(0.62 – 1.32 oz•inch)
Tape Tension Measurement
Torque Meter
Meter Reading
CQ-403A
more than 60g
(more than 2.12 oz)
TUNER SECTION
AM Section
Function switch : AM or LW
Volume
Volume
: MIN
FM Section
Function switch : FM
Volume
Volume
: MIN
AM RF signal
generator
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
FM RF signal
generator
generator
22.5kHz frequency deviation by
1kHz signal.
Output level : as low as possible
1kHz signal.
Output level : as low as possible
telescopic
antenna
terminal
antenna
terminal
0.01
µF
set
32
Ω
J301 (phones)
level meter
SECTION 5
ADJUSTMENTS
5-2. ELECTRICAL ADJUSTMENTS
TAPE RECORDER SECTION
Standard Output Level
Output terminal
HP OUT
load impedance
32
Ω
output signal level
0.25V (–10dB)
Test Tape
Type
Signal
Used for
WS-48A
3kHz, 0dB
Tape Speed Adjustment
Tape Speed Adjustment
Procedure :
Procedure :
Mode : Playback
Adjustment Value : 3,000Hz
Standard Value : 2,940 - 3,060Hz
Standard Value : 2,940 - 3,060Hz
Frequency difference between the beginning and the end of the tape
should be within 1.5% (45Hz).
should be within 1.5% (45Hz).
set
test tape
WS-48A
(3kHz, 0dB)
WS-48A
(3kHz, 0dB)
32
Ω
digital frequency
counter
counter
J301 (phones)
Tape speed adjustment
control inside motor
control inside motor
0dB = 0.775V
Adjustment Location : Mechanism deck
0dB = 1
µV
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