Mechanical Adjustments; Electrical Adjustments; Deck Section - Sony HD-FLX9W Service Manual

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3 7 63 1515 0

MECHANICAL ADJUSTMENTS

Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads
erase head
capstan
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
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
Mode
FWD
FWD
back tension
REV
REV
back tension
FF/REW
TE
L 13942296513
FWD tension
REV tension
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SECTION 6
pinch rollers
rubber belts
idlers
Meter reading
Torque meter
3.06 N ⋅ m to 6.96 N ⋅ m
31 to 71 g ⋅ cm
CQ-102C
(0.43 − 0.98 oz ⋅ inch)
0.19 N ⋅ m to 0.58 N ⋅ m
2 to 6 g ⋅ cm
CQ-102C
(0.02 − 0.08 oz ⋅ inch)
3.06 N ⋅ m to 6.96 N ⋅ m
31 to 71 g ⋅ cm
CQ-102RC
(0.43 − 0.98 oz ⋅ inch)
0.19 N ⋅ m to 0.58 N ⋅ m
2 to 6 g ⋅ cm
CQ-102RC
(0.02 − 0.08 oz ⋅ inch)
6.96 N ⋅ m to 14.02 N ⋅ m
71 to 143 g ⋅ cm
CQ-201B
(0.98 − 1.99 oz ⋅ inch)
9.80 N ⋅ m
CQ-403A 100 g or more
(3.53 oz or more)
9.80 N ⋅ m
CQ-403R 100 g or more
(3.53 oz or more)
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ELECTRICAL ADJUSTMENTS

2 9
8

DECK SECTION

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.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in
this service manual. (As a general rule, playback circuit
adjustment should be completed before performing recording
circuit adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
7. Switches and controls should be set as follows unless otherwise
specified.
• Test Tape
Tape
P-4-A100
WS-48B
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
DECK A DECK B
Note: Perform this adjustments for both decks
Procedure:
Q Q
3 6 7 1 3 1 5
1. Mode: Playback
test tape
P-4-A100
(10 kHz, –10 dB)
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.
L-CH
peak
R-CH
peak
Screw
position
co
.
HCD-DFLX9W
SECTION 7
9 4 2 8
0 dB=0.775 V
Signal Used for
10 kHz, −10 dB
Azimuth Adjustment
3 kHz, 0 dB Tape Speed Check
0 5 8 2 9 9 4 2 8
SP RELAY board
CN804
Pin 2 (L-CH)
level meter
Pin 5 (R-CH)
set
+
–
SP RELAY board
CN804
Pin 3 (GND)
within
1dB
Output
level
L-CH R-CH
peak
peak
m
9 9
9 9
within
1dB
Screw
position
33