Service manual

MECHANICAL ADJUSTMENTS
D2-1
Reel Disk Height
Adjustment Jig
(JG024A)
Reel Disk
Master Plane (JG022)
(B)
10(+0.2, -0)mm
Height Adjustment Washer
2.6x4.7xT0.13
2.6X4.7xT0.25
(A)
(C)
1. CONFIRMATION AND ADJUSTMENT
Read the following NOTES before starting work.
• Place an object which weighs between 450g~500g on
the Cassette Tape to keep it steady when you want to
make the tape run without the Cassette Holder. (Do not
place an object which weighs over 500g.)
1-1: CONFIRMATION AND ADJUSTMENT OF REEL
DISK HEIGHT
1.
2.
3.
4.
Turn on the power and set to the STOP mode.
Set the master plane (JG022) and reel disk height
adjustment jig (JG024A) on the mechanism framework,
taking care not to scratch the drum, as shown in Fig. 1-
1-A.
While turning the reel and confirm the following points.
Check if the surface “A” of reel disk is lower than the
surface “B” of reel disk height adjustment jig (JG024A)
and is higher than the surface “C”. If it is not passed,
place the height adjustment washers and adjust to
10(+2, -0)mm.
Adjust the other reel in the same way.
Master Plane (JG022)
Reel Disk Height Adjustment Jig
(JG024A)
Fig. 1-1-A
Fig. 1-1-B
1-2: CONFIRMATION AND ADJUSTMENT OF TENSION
POST POSITION
1.
2.
3.
Set to the PLAY mode.
Adjust the adjusting section for the Tension Arm
position so that the Tension Arm top is within the
standard line of Main Chassis.
While turning the S Reel clockwise, confirm that the
edge of the Tension Arm is located in the position
described above.
Fig. 1-2-A
Standard line of Main Chassis
Tension Arm
0.5mm (Adjusting range)
Fig. 1-2-B
Adjusting section for the
Tension Arm position
Tension Band
The Tension Arm top will
move to the inside direction
of the Main Chassis.
The Tension Arm top will
move to the outside direction
of the Main Chassis.
Bend
1-3: CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK
1.
2.
3.
After confirmation and adjustment of Tension Post
position (Refer to item 1-2), load the cassette type
torque tape (JG100A) and set to the PLAY mode.
Confirm that the right meter of the torque tape indicates
50~90gf•cm during playback in SP mode.
Confirm that the left meter of the torque tape indicates
25~40gf•cm during playback in SP mode.