Samsung SCX-4521F Series - Page 158

Schematic Diagram
Service Manual
10-17
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OP2
R4
100
R3
33K
C1
10nF
R5
10K
SW1
TNR101
07N561K
R9
33K
C10
10nF
SW2
LED2
R2
2.2K
R1
5.6K
CN3
Q1
KST2222A
D1
1N4003
OP1
R8
100
LED1
+24VS2____
+24VS2____
+24VS_____
+24VS_____
+3.3V_____
D_GND_____
+5V_______
P_EXIT____
THV_PWM___
THV_EN____
MHV_PWM___
THV_READ___
BIAS_PWM___
FAN_______
P_EMPTY____
CRU_DET___
KEY_IN____
TONER_SAVE
ERROR_____
READY______
24VS1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CN1
(2012) (2012)
CRU_DET
GND
(2012)
(2012)
(2012)
(2012)
3
1
RED
(2012)
SKYLARK-HVPS
(2012)
(2012)
HVPS (3/3)