Sharp VT-G14 - Page 48

48
VT-G14
VT-G21
MECHANISM OPERATION FLOWCHART
0
5
10
15
20
25
G mechanical timing
Mode check
Cam mark
Mode detection outside
(CAM SW B D7704)
Mode detection inside
(CAM SW A D7705)
Cam graph E
60 120 180 240
300 360
CA/END
CS/EJ
19.812°
UL
81
VSR
233
PU1
179
PU2
200
PB
265
SLOW
282
FF
316
STOP
334
Cam switch
0
Mode detection outside
Mode detection inside
S sensor
S sensor
Mode detection inside
CAM SW A
Mode detection outside
CAM SW B
CS/EJ
ULD
PU1
PU2
VSR
PB
SLOW
FF
STOP
1
1
1
0
0
0
0
0
0
0
1
1
1
1
0
1
1
0
open
close
0
1
EJ
UL
FF
PU
PU2
0
1
1
0
1
1
0
0
0
0
0
1
0
0
1
00
1 or 0
1
1
1
1
1
0
1
00
1
0
0
0
000
1
0
1
0
1
0
0
0
1
0
1
00
0
0
0
0
1
1
1
1
1
VSR
PB
SLW
STP
10.354° 12.812°
Loading motor turns in reverse
direction and master cam
counterclockwise.
CASSETTE INSERTION STOP
Cassette
inserting
Full-
loading
YES
YES
YES
NO
NO
NO
Unloading
Loading motor starts in normal
direction and master cam counter
clockwise.
Does mechanism position SW.
come off within 2.5 sec.?
Are start/end sensors at low level
before cassette insertion ?
Insert cassette.
Double action rack slides.
Drum motor starts.
Tape loading.
Pinch roller comes into contact.
Cam switch is at PB position.
Loading motor stops.
Is drum PG pulse output ?
End
End
Cassette is ejected and loading
motor stops.
Start sensor close.
(Cassette is judged
caught halfway.)
(Cassette LED or some other part
is judged defective.)
MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE