Read Sony CMT-NEZ3 / CMT-NEZ5 / HCD-NEZ3 / HCD-NEZ5 Service Manual online
13
HCD-NEZ3/NEZ5
SECTION 5
MECHANICAL ADJUSTMENTS
SECTION 6
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.)
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
2.95 – 6.86 mN
⋅
m
FWD
CQ-102C
(30 – 70 g
⋅
cm)
(0.42 – 0.97 oz
⋅
inch)
FWD
0.15 – 5.39 mN
⋅
m
Back Tension
CQ-102C
(1.5 – 5.5 g
⋅
cm)
(0.021 – 0.076 oz
⋅
inch)
more than 5.89 mN
⋅
m
FF
CQ-201B
(more than 60 g
⋅
cm)
(more than 0.83 oz
⋅
inch)
more than 5.89 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)
0 dB=0.775 V
DECK SECTION
Procedure:
1. Mode: Playback
set
HEAD PHONE board
PHONES jack
(J500)
PHONES jack
(J500)
+
–
–
level meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
P-4-A063
(6.3 kHz, –10 dB)
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
•
Test Tape
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Note:
Remove the cover (azimuth) before this adjustment.
Tape
Signal
Used for
P-4-A063
6.3 kHz, -10 dB
Azimuth Adjustment
Click on the first or last page to see other CMT-NEZ3 / CMT-NEZ5 / HCD-NEZ3 / HCD-NEZ5 service manuals if exist.