Read Sharp VC-M331HM (serv.man4) Service Manual online
31
VC-M321HM
VC-M331HM
VC-M331HM
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0
5
10
15
20
25
F mechanical timing
Mode
Rotation angle
Mode check
Cam mark
Mode detection outside
(D705 SW B)
Mode detection inside
(D708 SW A)
Cam graph E
60
120
180
240
300
360
CA/END
CS/EJ
33.82
UL
81
VSR
218
PU(LD)
188
PB
252
SLOW
269
CL
293
STOP
309
FF
325
Cam switch
0
Mode detection outside
Mode detection inside
S sensor
S sensor
Mode detection inside
Sensor A
Mode detection outside
Sensor B
CS/EJ
ULD
PU LD
VSR
PB
STILL
CL
STOP
FF
1
1
1
0
0
0
0
0
0
0
1
1
1
0
1
0
0
0
open
close
0
1
EJ
UL
FF
PU
0
1
1
0
0
0
0
1
1 or 0
1
1
1
0
10
0
0
0
0
1
1
1
1
1
1
VSR
PB
SLW
S
TP
CL
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 FLO
WCHAR
T AND
TR
OUBLESHOO
TING GUIDE
MECHANISM OPERATION FLOWCHART
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