8-54
8-18. Second Power Management System Circuit
When the horizontal and vertical Sync. are missing, power supply circuit to operate with IC621 becomes
“SUSPEND STATE” or “OFF STATE” condition.(Refer to item 8-10.)
Then,the voltage of “SINK” becomes low level and Q653 turn on.
The voltage of IC651 pin1 decreases low level and IC651 operation stop.
(20V and -20V fall.)
When the horizontal and vertical Sync applies again, power supply circuit to operate with IC621 becomes
“ON STATE”. And the voltage of “SINK” becomes high level and Q653 turn off.
At this time, IC651 operation start and 20V and -20V rise.
(Fig.8-19) Power Management System Circuit
GND
+20.0V
-20.0V
+
-
C6L1
+
-
C6M1
D6L1
D6M1
R655
R657
R656
C653
+
-
SINK
PC651
R651
D651
C651
+
-
T651
DRAIN
CONTROL
IC651
SOURCE
1
2
3
Q653
Summary of Contents for MultiSync FP1370
Page 13: ...4 4 REMARK SYMBOL Mount the EMF PWB 121E REMARK SYMBOL Clamp the connector ...
Page 14: ...4 5 REMARK SYMBOL COIL FORMING UPPER SIDE REMARK SYMBOL COIL FORMING LOWER SIDE ...
Page 23: ...4 14 REMARK SYMBOL REMARK SYMBOL Clamp CN CA CN CC and CN D with CLAMPER WIRE ...
Page 26: ...4 17 REMARK SYMBOL Clamp the wires SAFETY REMARK SYMBOL Clamp the wires CN ASD CN AF 21 ...
Page 80: ...5 51 Fig 3 11 CONV PWB Fig 3 12 EMF PWB CN EMF CN LL CN RR CNEM CN CA CN D CN CCB HS8N1 ...
Page 143: ...8 18 15V 80V AFC D FOCUS Fig 3 1 HIGH VOLTAGE CIRCUIT AND PROTECTOR CIRCUIT ...
Page 260: ...10 1 ...
Page 261: ...10 2 ...
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Page 264: ...10 5 ...
Page 266: ...for Human Potential ...
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