Back Tension Check And Adjustment; Fwd Back Tension Check And Adjustment - Sony BVW-55 Maintenance Manual

5-3. Back Tension Check and Adjustment

5-3-1. FWD Back Tension Check and Adjustment

5-3. Back Tension Check and Adjustment
This section describes the FWD and REV back tension checks and adjustments.
Be sure to perform checks and adjustments after replacing the following parts.
. S reel table
. S reel motor
. S tension regulator arm
. T reel table
. Tension regulator band
. T tension regulator arm
5-3-1. FWD Back Tension Check and Adjustment
Be sure to perform this check and adjustment when replacing the S reel table, S reel
motor and S tension regulator arm, and when performing the S tension regulator
offset/gain adjustment.
Tool
. Torque cassette (FWD back ten.) (MW-389): J-6323-890-A
Preparations
1. Check that the unit is in the unthreading end state.
2. Turn off the power. (Refer to the maintenance manual Part 1, Section 1-6-2.)
3. Remove the upper frame without disconnecting the harness connectors.
(Refer to the maintenance manual Part 1, step (1) to (4) in Section 1-6-2.)
4. Remove the cassette compartment and extened it with the extension harness.
(Refer to Section 1-1.)
5. Set the switch S100-1 on the SV-206 to ON.
6. Turn on the power.
7. Place the torque cassette to the unit, and put the weight (about 1000 g) on the
torque cassette.
5-10
BVW-55 P2