VC-A598U/H995U/H996U
-H997U/H9977U/H998U
20
• Remove the cassette housing control assembly.
• After short-circuiting TP801 provided at the center
(facing to the main PWB), plug in the power cord.
• Setting
1. Set a torque gauge to zero on the scale. Place it on the
supply reel disk.
2. Switch from the FF mode to the STOP mode.
3. Disconnect the power cord.
• Checking
Turn the torque gauge at a rate of about one turn/2 sec
in the CW direction/CCW direction with respect to the
supply reel disk so that the reel disk and torque gauge
pointer rotate at equal speed, and make sure that the
value is within the setting (CW direction: 4.9 to 13.7mN·m
(50 to 140gf·cm); CCW direction: 2.9 to 9.8mN·m (30 to
100gf·cm).
• Adjustment
1. If the indication of torque cassette meter is lower than
the setting, shift the tension spring engagement to the
part A.
2. If the indication of torque cassette meter is higher than
the setting, shift the tension spring engagement to the
part B.
• Checking the brake torque at the take-up side
Figure 4-22.
CCW: 4.9~13.7mN
⋅
m (50~140gf
⋅
cm)
CW:
3.9~10.8mN
⋅
m (40~110gf
⋅
cm)
Figure 4-20.
CHECKING THE BRAKE TORQUE
• Checking the brake torque at the supply side
CCW: 2.9~9.8mN
⋅
m (30~100gf
⋅
cm)
CW:
4.9~13.7mN
⋅
m (50~140gf
⋅
cm)
Figure 4-21.
Tension arm
Tension spring
CW
CCW
CW
Supply reel disk
Torque gauge
Torque gauge
CCW
Take-up reel
disk
A
B
• Remove the cassette housing control assembly.
• After short-circuiting TP801 provided at the center
(facing to the main PWB), plug in the power cord.
• Setting
1. Switch from the FF mode to the STOP mode.
2. Disconnect the power cord.
3. Set a torque gauge to zero on the scale. Place it on the
take-up reel disk.
• Checking
1. Turn the torque gauge at a rate of about one turn/2 sec
in the CCW direction/CW direction so that the reel disk
and torque gauge pointer rotates at equal speed and
make sure that the value is within the setting (CCW
direction: 4.9 to 13.7mN·m (50 to 140gf·cm), CW direc-
tion: 3.9 to 10.8 mN·m (40 to 110gf·cm).
2. Adjustment of the brake torque at the supply side and the
take-up side
• Unless the supply side brake torque or take-up side
brake torque is within the setting, clean the felt surface
of reel disk (supply, take-up) brake lever, check again
the brake torque.
• If value cannot be set within the setting yet, replace the
main brake ass'y or main brake spring.
Summary of Contents for VC-A598U
Page 6: ...VC A598U H995U H996U H997U H9977U H998U 6 1 3 LOCATION OF MAJOR COMPONENTS AND CONTROL ...
Page 51: ...VC A598U H995U H996U H997U H9977U H998U 51 8 BLOCK DIAGRAM POWER CIRCUIT BLOCK DIAGRAM ...
Page 52: ...VC A598U H995U H996U H997U H9977U H998U 52 SYSTEM SERVO BLOCK DIAGRAM ...
Page 53: ...VC A598U H995U H996U H997U H9977U H998U 53 ...
Page 54: ...VC A598U H995U H996U H997U H9977U H998U 54 SIGNAL FLOW BLOCK DIAGRAM VC A598U ...
Page 61: ...VC A598U H995U H996U H997U H9977U H998U 61 13 12 11 10 9 8 7 ...
Page 65: ...VC A598U H995U H996U H997U H9977U H998U 65 13 12 11 10 9 8 7 ...
Page 67: ...VC A598U H995U H996U H997U H9977U H998U 67 13 12 11 10 9 8 7 ...
Page 69: ...VC A598U H995U H996U H997U H9977U H998U 69 13 12 11 10 9 8 7 ...
Page 72: ...VC A598U H995U H996U H997U H9977U H998U 72 7 6 5 4 3 2 1 A B C D E F G H MAIN PWB ...
Page 73: ...VC A598U H995U H996U H997U H9977U H998U 73 13 12 11 10 9 8 7 ...