Read Sony CMT-DF1 / HCD-DF1 Service Manual online
10
HCD-DF1
INITIAL MODE SETTING
Procedure:
1. Press three buttons of [VOLUME +], [DISPLAY] and
I/
1
simultaneously.
2. The system is initialized and turn the power on.
(The function becomes tuner mode and the volume become
16)
SECTION 4
TEST MODE
SECTION 5
MECHANICAL 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.)
erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, appiy suitable locking compound to
4. After the adjustments, appiy suitable locking compound to
the parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
TORQUE MEASUREMENT
Mode
Torque Meter
Meter Reading
2.0 – 8.0 mN
⋅
m
FWD
CQ-102AS
(20 – 80 g
⋅
cm)
(0.28 – 1.12 oz
⋅
inch)
FWD
0.15 – 0.6 mN
⋅
m
Back Tension
CQ-102C
(1.5 – 6.0 g
⋅
cm)
(0.021 – 0.083 oz
⋅
inch)
5.0 – 17.7 mN
⋅
m
FF
CQ-201AS
(50 – 177 g
⋅
cm)
(0.7 – 2.48 oz
⋅
inch)
5.0 – 17.7 mN
⋅
m
REW
CQ-201B
(50 – 177 g
⋅
cm)
(0.7 – 2.48 oz
⋅
inch)
TAPE TENSION MEASUREMENT
Mode
Tension Meter
Meter Reading
FWD
CQ-403A
more than 80 g
(more than 2.82 oz)
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