25
HCD-AZ2D/AZ5D
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.
3. Do not use a magnetized screwdriver for the adjustments.
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
3.06 N⋅m to 6.96 N⋅m
FWD CQ-102C 31 to 71 g⋅cm
(0.43 – 0.98 oz⋅inch)
FWD
0.19 N⋅m to 0.58 N⋅m
Back Tension
CQ-102C 2 to 6 g⋅cm
(0.02 – 0.08 oz⋅inch)
3.06 N⋅m to 6.96 N⋅m
REV CQ-102RC 31 to 71 g⋅cm
(0.43 – 0.98 oz⋅inch)
REV
0.19 N⋅m to 0.58 N⋅m
Back Tension
CQ-102RC 2 to 6 g⋅cm
(0.02 – 0.08 oz⋅inch)
6.96 N⋅m to14.02 N⋅m
FF/REW CQ-201B 71 to 143 g⋅cm
(0.98 – 1.99 oz⋅inch)
9.80 N⋅m
FWD Tension CQ-403A 100 g or more
(3.53 oz or more)
9.80 N⋅m
REV Tension CQ-403R 100 g or more
(3.53 oz or more)
0 dB=0.775 V
DECK SECTION
Procedure:
1. Mode: Playback
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjust.
TEST Tape
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Note: Perform this adjustments for both decks.
Tape Signal Used for
P-4-A063 6.3 kHz, -10 dB Azimuth Adjustment
DECK–A DECK–B
set
MAIN board
VIDEO/SAT OUT
jack (J101)
+
–
level meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak
R-CH
peak
within
1dB
Screw
position
R-CH
peak
w
w
w
.
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L
1
3
9
4
2
2
9
6
5
1
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2
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2
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0
5
1
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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