Sharp ER-A450T Service Manual - Page 60

Ps Pwb Circuit Diagram

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8 7 6 5 4 3 2 1 6. PS PWB CIRCUIT DIAGRAM 1/1 D POWER UNIT CORE C CN1 1 2 PS CN D CN17 1 2 CAR BT CN UL. CSA T2.5AL/125V F1 C1 3 M0.033u BD1 4 (C2) 1 (4700UF) (50V) 2 CP301 C5 3300UF 50V C6 3300UF 50V R1 18K C3 22UF/50v Q1 KTD998 1 5 IC1 7 423 LM2574HVN 6,8PIN:NC HEAT SINK L1 180uH R2 10 D2 PS156R R3 22KF R4 1.2KF C4 2200uF/50V +24V 2 +24V 1 GND C TO MAIN PWB |LINK |450CKDC.SCH |450CPU.SCH |450FMC.SCH |450FRT.SCH |450GA.SCH |450KEY.SCH |450MM.SCH |450OM.SCH B |450POP.SCH B |450POWER.SCH |450PR.SCH |450PS.SCH |450RS.SCH |450TP.SCH |RS1.SCH |RS2.SCH A A 8 7 6 5 4 3 2 1

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8
7
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A
B
C
D
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1/1
6. PS PWB CIRCUIT DIAGRAM
+24V
HEAT SINK
Q1
KTD998
L1
180uH
2
1
CN17
CAR BT CN
POWER UNIT
CORE
1
2
CN1
PS CN
|LINK
|450CKDC.SCH
|450FMC.SCH
|450CPU.SCH
C6
3300UF
50V
(C2)
(4700UF)
(50V)
C5
3300UF
50V
C1
M0.033u
F1
UL. CSA T2.5AL/125V
4
1
2
3
BD1
CP301
6,8PIN:NC
D2
PS156R
1
5
7
3
4
2
IC1
LM2574HVN
R2
10
R1
18K
C3
22UF/50v
+24V
GND
R4
1.2KF
R3
22KF
C4
2200uF/50V
2
1
TO MAIN PWB
|450FRT.SCH
|450GA.SCH
|450KEY.SCH
|450MM.SCH
|450OM.SCH
|450POP.SCH
|450POWER.SCH
|450PR.SCH
|450PS.SCH
|450TP.SCH
|450RS.SCH
|RS1.SCH
|RS2.SCH