UBI EasyCoder 601 XP – Service Manual Ed. 1
89
Chapter 14 Power Supply
14.3 Schematics
1-971601-26 Power Supply Unit; Main Schematics
1-971601-27 Power Supply Unit; Main Schematics
V40
V24
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
X3
R103
C23
14
3
L4A
V42
C22
R137
C21
V16
V19
R28
V13
V15
V3
V10
V11
C15
C8
Y
V2
3
4
76
L3
C10
C1
Y
R1
FH1
1
2
3
X1
MAINS CONN
C2
X2
C3
Y
R2
R3
FH2
S1
C5
Y
C6
Y
R4
var
3
4
1
6
L1
C4
X2
R5
3
4
1
6
L2
C7
X2
C9
1NY
V1
R21
C19
R25
V12
C17
C16
C13
C14
13
42
T1
R26
R27
R29
V17
V18
V14
R35
R
142
R143
C24
9
6
71
0
8
11
T2
V20
C26
R102
V41
12
2
L4B
R36
R38
C25
R140
R141
R134
R135
R138
Vin
O
K
P24EN
V5.3
R104
P24
+42V
+24V
1-971601-26 (2/4)
+24V
+5.3V
Comm.
V43
V22
R101
V40
R39
98
L4C
R34
V21
R127
C27
C
28
R129
C54
Y
C55
Y
C20
C66
R133
R30
R31
R32
R33
C18
Y
C11
Y
C12
X2
R15
R16
R17
V4
R10
R11
R12
V37
C30
R6
R7
R8
V6
V5
V7
R9
C29
V52
C31
R18
R19
R20
V8
V9
R13
R14
R22
V38
V39
R70
R71
R72
V29
H1
R73
R74
R84
1 2
X4b
1 2
X4a
1
2
FAN1
R90
R91
R100
C63
12
TB1
C67
Common
P24
C56
1 2 3 4 5 6 7 8 9 10
X2
C49
R88
V32
R87
R124
C48
C
1
A
2
A
3
NC
4
NC
5
A
6
A
7
REF
8
N4
TL431CD
R78
R85
R86
C46
COMP
1
NC
2
F/B
3
NC
4
IS
5
NC
6
RC
7
GND
8
GND
9
OUT
10
VC
11
VCC
12
NC
13
REF
14
N2
UC3844AD
R75
R76
R77
V31
C43
R99
V28
R55
R62
R63
R64
R65
R66
C39
R54
R49
R
51
R52
V24
V25
V26
R53
R50
R40
R41
R42
R43
C34
R44
R46
V23
COMM
1
PKLMT
2
CAOUT
3
IS
4
XOUT
5
IAC
6
VAOUT
7
VRMS
8
REF
9
ENA
10
VS
11
RT
12
SS
13
CT
14
VCC
15
OUT
16
N1
UC3854A
R47
R
48
R56
C41
C42
R59
R
60
R61
C44
R67
R68
R81
3
2
1
8
4
N3A LM393D
R79
NTC
R106
C45
R69
V30
R83
C47
R94
R95
V35
C50
R89
R98
R97
5
6
7
N5B
LM393D
3
2
1
8
4
N5A LM393D
V48
V36
C52
H2
CNY17F-2
R96
V34
C51
R92
R93
V33
R105
5
6
7
N3B LM393D
R109
R82
R80
R108
R107
R57
R58
V27
C38
C40
C35
C36
C37
C32
R45
C33
R145
C68
R144
R37
R126
CNY17F-2
++
+
++
+
+
-
+
-
+
+
+
-
+
-
+
-
-1
45
°
+
+
Pulse Width Modulation Power Factor Controller
PWM PFC
OTP
Power Fail Interrupt
Control Vout
Buck Converter
PWM Forward
Power to
CPU Board
Power to
Printhead
C56 and C68 removed on 1-971601-27