HCD-EX6/EX6T/EX8/EX8T/EX9/EX9T
15
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
HCD-EX6T/EX8T/EX9T only:
1. Demagnetize the record/playback head with a head demagne-
tizer.
2. Do not use a magnetized screwdriver for the adjustments.
TEST TAPE
Tape Signal Used for
P-4-A063 6.3 kHz, –10 dB Azimuth Adjustment
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT
Adjustment Location: Record/Playback Head (See page 16)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode: Playback
set
USB-JACK board
PHONES jack
(J551)
+
–
level meter
test tape
P-4-A063
(6.3 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 1 dB of peak.
Screw
position
L-CH
peak
within
1 dB
Output
level
L-CH
peak
R-CH
peak
within
1 dB
Screw
position
R-CH
peak
3. Mode: Playback
set
oscilloscope
V
H
waveform of oscilloscope
in phase 45º 90º 135º 180º
good wrong
USB-JACK board
PHONES jack
(J551)
test tape
P-4-A063
(6.3 kHz, –10 dB)
4. After the adjustments, apply suitable locking compound to the
pats adjusted.
HCD-EX6T/EX8T/EX9T only:
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 demag-
netizer. (Do not bring the head magnetizer close to the erase
head.)
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 Torque meter Meter reading
FWD CQ-102AS
2.0 – 8.0 mN • m
(20 to 80 g • cm)
(0.28 – 1.12 oz • inch)
FWD
Back tension
CQ-102C
0.15 – 0.6 mN • m
(1.5 to 6 g • cm)
(0.021 – 0.083 oz • inch)
FF CQ-201AS
5 – 17.7 mN • m
(50 to 177 g • cm)
(0.7 – 2.48 oz • inch)
REV CQ-201B
5 – 17.7 mN • m
(50 to 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)
DECK SECTION
0 dB = 0.775V
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