Toshiba D-VR3SU, Service Manual

Page: 172 / 217

VCR Deck Operating Description
8-24
<RPS mode>
(1) When the [REW] button is pressed in the playback mode, the mechanism enters the RPS mode.
The cam slider is in the position IV (playback mode), the cylinder motor is rotating, and the capstan motor is
rotating in the forward direction.
(2) IC601 controls the audio circuit to actuate the audio mute operation.
(3) IC601 controls Capstan Motor Drive IC to make the loading motor rotate in the reverse direction.
After 180ms the loading motor stops for 250ms. During the mode shift operation, the mechanism rotates the
capstan motor in the forward direction for a constant time so that the tape is not slackened.
(4) When the cam slider reaches the position “c” (loading motor stoped for 250ms), the capstan motor is rotated in
the reverse direction for a constant time, and the idle gear is swung toward the S reel disc side.
Then, the loading motor rotates in reverse direction and shifts to the position III (RPS mode).
When the cam slider reaches the position III (RPS mode), the loading motor stops.
The mechanism status is as follows :
1) The No.9 guide is loaded.
2) The tension post is separated from the tape.
3) The T soft brake is turned on.
The cpastan motor rotates in the reverse direction at 7 times for SP, 21 times for SLP to feed the tape in the
REW direction, respectively. At the same time, the idle gear transmits the rotation to the S reel disc and
the S reel disc takes up the tape by the clutch mechanism.
(5) The recording speed data identified by IC601 is displayed on the Led module.
T brake (RPS brake) S brake (OFF)
Tension lever (OFF)
Pinch assembly (ON)
No. 9 guide lever (ON)
Fig. 8-28 RPS Mode (Position III)