Sharp VC-S2000HM, Service Manual

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VC-S2000HM
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 inside
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
233
200
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.)
6. MECHANISM OPERA
TION FLOWCHART
AND TROUBLESHOOTING GUIDE
MECHANISM OPERATION FLOWCHART