Sony CFM-D1JMK2 / CFM-D1MK2 Service Manual ▷ View online
CFM-D1JMK2/D1MK2
5
2-2. E.C.M BOARD, MD ASSY(MF-D1)
2-3. RECORD/PLAYBACK HEAD (HRP101), BELT, REEL/CAPSTAN MOTOR (M101)
1
Two claws
4
Chassis (tuning)
5
Connector (CN102)
6
Connector (CN101)
8
MD assy (MF-D1)
2
E.C.M board
3
Two screws (+BVTP 3X10)
7
Two screws (+BVTP 3X10)
Cabinet (rear) assy
1
Screw (M2X3, +Bind)
3
Screw (M2X7, +AZIMUTH)
2
Rug (B3)
Spring
4
Record/playback head (HRP101)
5
Screw, MB
8
Motor coller screw
6
Bracket, motor
7
Belt
9
Reel/capstan motor (M101)
CFM-D1JMK2/D1MK2
6
2-4. EARPHONE BOARD, MAIN BOARD
2-5. POWER BOARD
1
Knob (TUNING)
2
Knob (FINE TUNING)
4
Gear, tuning
7
Connector (CN105)
5
Screw (+BVTP 3X10)
9
Screw (+BVTP 3X10)
qs
MAIN board
0
8
Three screws (+BVTP 3X10)
6
EARPHONE board
3
Two knobs (VOLUME/TONE)
qa
Two knobs (FUNCTION/BAND)
Cabinet (rear) assy
1
Three screws (+BVTP 3X10)
2
Shield plate
3
POWER board
Cabinet (rear) assy
CFM-D1JMK2/D1MK2
7
2-6. DIAL POINTER SETTING
2
Tuning gear
A
3
Knob(Tuning) assy
1
Tuning capacitor gear
B
Tuning capacitor gear
1. Turn the Tuning Capacitor Gear all the way in
the direction of the arrow until it is positioned
at the detent B (
the direction of the arrow until it is positioned
at the detent B (
) position Fig-1.
2. Turn the Tuning Gear until its position A (
)
fits into the detent B (
) of the Tuning
Capacitor Gear.
Tuning gear
4
5
Screw +BVTP3X10
5
Screw +BVTP3X10
Tuning chassis
C
Pointer rack
Tuning chassis
Pointer
rack
rack
Scribe lines
Tuning chassis
Fig-1
Fig-2
Fig-3
3. Line up the Pointer Rack with the scribe line
as shown in Fig-2.
as shown in Fig-2.
4. Install so that the Tuning Chassis intermeshes
with the Pointer Rack as shown in C of Fig-3.
with the Pointer Rack as shown in C of Fig-3.
5. Fasten the Tuning Chassis to the cabinet (Rear)
with the screw.
with the screw.
CFM-D1JMK2/D1MK2
8
SECTION 3
ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS
AND MEASUREMENTS
AND MEASUREMENTS
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 demagnetizer
close to the erase head.)
close to the erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound
4. After the adjustments, apply suitable locking compound
to the parts adjusted.
5. The adjustments should be performed with the rated
power supply voltage unless otherwise noted.
Torque Measurement
3-2. ELECTRICAL ADJUSTMENTS
CASSETE SECTION
Note : The adjustment should be performed in the order given in
this service manual.
r
Switches and controls should be set as follows unless
otherwise specified.
otherwise specified.
FUNCTION :
TAPE (RADIO OFF)
VOLUME :
max
TONE :
mechanical mid.
Torque
Torque Meter
Meter Reading
2.95 – 6.86mN• m
Playback
CQ-102C
(30-70g• cm)
(0.417-0.97oz• inch)
8.83 – 14.7mN• m
Rewind
CQ-201B
(90-150g• cm)
(1.24-2.08oz• inch)
8.83 – 14.7mN• m
Fast Forward
CQ-201B
(90-150g• cm)
(1.24-2.08oz• inch)
0.148 – 0.539mN •m
Back Tention
CQ-102C
(1.5-5.5g• cm)
(0.02-0.76oz• inch)
Tape Tension Measurement
Torque Meter
Meter Reading
CQ-403A
more than 170g (5.99 oz)
Standard Output Level
SP OUT
EARPHONE
load impedance
4
Ω
32
Ω
output level
0.775V (0dB)
0.25V (–10dB)
Type
Signal
Used for
WS-48A
3kHz, 0dB
Tape Speed Adjustment
P-4-A063
6.3kHz, – 10dB
Azimuth Adjustment
Test Tape
0 dB=0.775V
Tape Speed Adjustment
Procedure :
Mode : playback
digital frequency
counter
counter
32
Ω
test tape
WS-48A
(3kHz, 0dB)
WS-48A
(3kHz, 0dB)
Earphone jack
set
+
-
Digital frequency counter
2,940 – 3,090 Hz
Frequency difference between the beginning and the end of
the tape should be within 1.5% (45Hz).
the tape should be within 1.5% (45Hz).
Adjustment Value :
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