Samsung VP-L900, Training Manual

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Circuit Operating Description
6-10 Samsung Electronics
(2) Reel Rotate Check
The rotation of the Reel is detected by the pulse which occurs from the photo TR which is located in sub pcb of
the take-up/supply of the mecha. When the capstan motor was not detected is rotating reel pulse, the reel
rotation stopped, it judges.
The capstan the motor rotation stops, the tape take-up control is accomplished.The mecha the ready (stop)
moves with a location.
When the pulse did not become the input during the next period and the reel stood still, it judges.
- Even in detection of TAPE-PRE END use (REC from mode about 5 minutes)
!
Sensor output
@
Micom input
3V min
2V max
43 SS 5V
32 T REEL
35 R REEL
33 TR LED(-)
!
1
^
@
(
*
IC601
MICOM
T REEL FG
S REEL FG
IC502
MOTOR DRIVE
CN501
Fig. 6-9
Mode Stop time
FF,REW,FR-SEARCH NTSC : 126ms , PAL : 120ms
CUE,REV NTSC : 342ms , PAL : 257ms
PLAY,REC NTSC : 2.4s , PAL : 1.8s
etc 700ms
<Table 6-7>