9
M-800V/850V
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback/erase head
pinch roller
rubber belts
capstan
2. Demagnetize the record/playback/erase head with a head
demagnetizer. (Do not bring the head demagnetizer close to the
erase head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Power supply voltage : 3 V DC
TAPE SPEED switch : 2.4cm
Torque Measurement
SECTION 3
MECHANICAL ADJUSTMENTS
Record/Playback/Erase Head Azimuth Adjustment
Setting:
VOL control
: mechanical mid
TAPE SPEED switch : 2.4cm/s
VOR switch
: OFF
FAST PB switch
: OFF (M-850V model only)
Procedure:
1. Mode : Playback
Adjustment Location :
Test Tape
Type
Signal
Used for
Tape Speed
(cm/s)
S-2-A030A 3 kHz, – 20 dB Head Azimuth Adjustment
2.4
WS-24
3 kHz, – 10 dB Tape Speed Adjustment
1.2/2.4
SECTION 4
ELECTRICAL ADJUSTMENTS
2. Turn the adjustment screw to obtain the maximum reading on
level meter.
Note:
Several peaks may appear, but the maximum.
First remove the arm.
EAR jack (J103)
set
16
Ω
test tape
S-2-A030A
(3 kHz, –20 dB)
level meter
Remove the arm in
the direction of the arrow
Head azimuth
adjustment screw
(FWD)
Take the arm down
(REV)
Mode
Forward
Reverse
Fast Forward
Rewind
Torque Meter
CQ-102M
CQ-102MR
CQ-201M
CQ-201M
Meter Reading
0.49 to 0.98 mN • m
(5 to 10 g • cm)
(0.07 to 0.140 oz • inch)
more than 2.94 mN • m
(more than 30 g • cm)
(more than 0.42 oz • inch)
Mode
Forward
Reverse
Tension Meter
CQ-403M
CQ-403MR
Meter Reading
more than 2.45 mN • m
(more than 25 g • cm)
(more than 0.35 oz • inch)
more than 2.45 mN • m
more than 25 g • cm
(more than 0.35 oz • inch)
Tape Tension Measurement
