Samsung ML-2251N - Page 121

11-14
SCHEMATIC DIAGRAMS
Samsung Electronics
Service Manual
This Document can not be used without Samsung’s authorization.
SMPS Circuit Diagram (3/3)
C101
50V1uF
SW1
F1
250V5A
TNR1
10D561
BD1
D3SBA60
C7
450V
L1
100uH
C5
630V
R3
1W47
U1
BTA12-600B
C6
104
R5
1/4W22
R4
1W180
0 0
00
PC1
TLP3061F
R110
1/2W1.5K
Q102
C1008-Y
R101
470
PC2-2
817
U101
431
R105
2.71KF
R104
2.6KF
F101
250V2A
R10
1/4W6.8K
R7
1/2W10M
C104
WB16V1500uF
C12C11
472MAA*2
OP101
KPI-512
OP103
SG-288
R113
47K
R117
47K
R107
47K
R115
47K
OP102
KPI-512
Q101
KSC1008-Y
R109
5.6K
R108
2.2K
D105
1N4003
ZD103ZD102ZD101
1W200VX3
TNR101
7D561
R12
4.7
R103
4.7K
R6
1/2W2M
ZD1
1W130V
PC2-1
817
C9
SG50V1uF
D2
200V1A
B1
C103
RG50V1uF
SW2
SS-5GLD
C8
104
C-CONT
1
L-L/S
2
X-C/L
3
S-SOURCE
4
F-FRQ
5
D-DRAIN
6
U2
IC-TOP246Y
C102
RG35V
R114
1/4W150
R112
1/4W150
R106
1/4W150
R116
1/4W150
R111
NU
B101
R102
NU
C105
RG10V470uF
GND-A
GND-A
R11
6.8
D103
D104
200V3A*2
D101
40V3AX2
D102
C11
630V
R13
1W100K
C10
SG16V47uF
C1
474
LF1
0610V
F2
250V2A
C2
C3
102MAD*2
AR1
SSG-102-A1
AR1
SSG-102-A1
C4
474
R2
R1
1/4W270K*2
D5
UF4007
R8
1/4W330K*2
R9
TH1
10D-13
CON2-5,6
CON2-3,4
CON1
CON2-26
CON2-11,12,13
CON2-26
CON2-25
CON2-21
CON2-2_
CON2-1_
CON2-14
CON2-15
CON2-24
CON2-23
CON2-22
CON2-16
CON2-18
CON2-17
CON2-19
CON2-20
CON1
CON3-3
CON3-1
5V
CON2-14
CON2-2_
5V
CON2-25
CON2-1_
CON3-2
+24VS
CON3-3
CON3-2
CON3-1
CON2-23
CON5-4
CON5-1
CON5-2
CON5-3
CON5-5
ZG1
OPC1
CON2-9,10
CON2-11,12,13
+5V 1.5A
GND
AC IN
100uF
333K
FUSER-ON
LED TONER SA VE
EXIT
FUESR ON
FEED SENSOR
PAPER EMPTY
MANUAL
THV READ
KEY DEMO
FAN
MHV PWM
LED READY
LED ERROR
THV PWM
BIAS PWM
THV EA
+24VS
FUSIBLE
FUSIBLE
PAPER EMPTY
EXIT
FEED SENSOR
CON6
MANUAL
CON3
FAN
CON4
D GND
D GND
GND
1000uF
+24VS 2. 0A
5
6
3
1
9, 10
7,8
11
7, 8
103K