50
27DV-S100
27DV-CS10
MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE
1
0
1
1
1
10
1
1
1
1
1
0
1
0
0
0
1
0
1
0
0
0
1
0
0
0
0
0
1
0
0
0
1
0
1
0
0
0
1
0
S sensor
Open
Close
Mode detection inside
sensor A
1
1
1
0
0
0
0
0
0
Mode detection outside
sensor B
0
1
1
1
1
0
1
1
0
CS/EJ
ULD
PU1
PU2
VSR
PB
SLOW
FF
STOP
Cam graph E
25
20
15
10
5
0
60 120 180 240 300 380
G mechanical timing
Mode check
Cam mark
Mode detection outside
(D709 SW B)
Mode detection inside
(D708 SW A)
0 19.812 81 179 233200 265 282 316 334
10.354 12.812
CA/END
CS/EJ
UL
PU1
PU2
VSR
PB SLOW
FF
STOP
Mode detection outside
Mode detection inside
S sensor
EJ UL PU PU2 VSR PB SLW FF STP
0
1
1
0
1
1
0
0
0
0
0
1
0
0
1 or 0
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 stop.
Is drum FG pulse outputted ?
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
* This flowchart describes the outline of the mechanism’s operation, but does not give its details.
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