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BLOCK & CIRCUIT DIAGRAMS
1. POWER(SMPS) BLOCK DIAGRAM
T101 !
R101 TRANSFORMER
SNUBBER 6 7
RECTIFIER & TO SYS
BD101 BLOCK SMOOTHING 13VA(Cap)
+
C103 (D102, R104,
(D109, C120,
C105, C106)
4 8 L104, C121) TO SYS
12VA(DRUM)
D153 D151
TO BUFFER
LINE FILTER
BLOCK 13VA
!
(C101, L102, C102) DRIVE & S/W 10 RECTIFIER & Q152
BLOCK SMOOTHING
(IC101, C109, D103, R103, J101, (C116, D106,
R109, R125, R126, C135) L103, C117)
F101 11 TO AVCP, BIAS
! 3 5V REG. 12.5VA
BLOCK
(Q153, R153, R159,
ZD153, C156, C153)
2
BK WH
(BR) (BL) 1 5V S/W TO SENSOR MOD
! PW101 4 FEED-BACK BLOCK 5.0V
HOT GND
BLOCK
(Q155, R156, R157,
!
(R116, R117, R118, C154, D157)
C113 C112 3
IC102 ! 2 R119, R120, R121,
! C114)
HOT CIRCUIT IC103
PWR CTL
FROM SYS
P.CTL "H"
BLOCK
(Q156, R161)
TO SYS, MOD
NOTES : Symbol denotes AC ground. 5.3VA
Symbol denotes DC chassis ground.
3-17 3-18