Brother HL-2037 User Manual

CHAPTER 3 THEORY OF OPERATION
Confidential
3-16
1.3.11 Power supply
+5V is supplied from LVPS. +5V is used by IEEE1284 interface.
In addition, +3.3V is generated by the 3-pin regulator from +5V supplied from the LVPS. +1.9V
is used for the CPU within the ASIC and the logic circuit.
24V is used for the motors and solenoids.
<HL-2030/2040>
+
-
+
ANALOG
ANALOG
VDD3
0V
C123
C104
D4
1SS355
1-3D
HTLIMITN
C104
C103
U8
LM393P
8
V+
4
V-
R127
18k
1%(F)
1-4D
HEATERON
R130
0
VDD3
Q3
DTC143ZUA
C
B
E
U8
LM393P
2
3
1
C77
C103
0V
R135
1k
1-3E
THM1
C103
C101
VDD3
0V
VDD3
0V
R128
18k
1%(F)
1-4D
RLYOFFN
R96
22k
1%(F)
0V
U8
LM393P
6
5
7
0V
R95
18k
1%(F)
R129
10k
R82
10k
1-2A/1-7A/4E
RSTN
0V
0V
R125
0
C102
C101
R81
10k
0V
24RET
VDD24
R94
1.5k
1%(F)
0V
C88
C104
10%(B)
C101
C103
R97
470k
R126
10k
0V
1-3E
REG_FRONT_SEN
1-3E
PEDG_SEN
C122
C103
TP132 TP138
TP129
TP119
TP137
TP151
TP152
TP163
C119
C102
C130
C102
0V
0V
TP162
VDD5
1-3E
TNRLED
CN11
1
RELAYOFFN
4
TNRLED
6
+24V
5
24RET
7
HEATERONN
C126
C102
0V
C46
C102
C45
C102
R137
68k
R139
68k
R56
100
R57
100
VDD3
0V
9
S0V
8
+5V
3
FRONT_SEN
B9B-PH-K-S(LF)
2
PEDG_SEN
TP64
TP65
C116
C220
10V 12V
VDD5
TP167 TP166
TP170 TP168
TP164
TP165
L5
C134
C101
C135
C101
0V
L6 (1608)
0
C138
C104
(1608)
C141
C101
C142
C101
0V
CN8
1
VDD3
2
CENTER_THM
3
EDGE_THM
4
VDD3
+
-
LVPS
THM
RELAYOFF (FX OPTION)
H: RELAY ON
L: RELAY OFF
HEATERON
H: HEATER ON
L: HEATER OFF
4.7k
47k
Fig. 3-22
<HL-2070N>
+
-
+
-
ANALOG
ANALOG
TP141
D3
1SS355
VDD3
C154
C102
C161
C102
TP165
C160
C102
R122
1k
R126
100
C127
C103
0V
0V
0V
0V
1-2F
HTLIMITN
C151
C104
10%
0V
R95
0
TP155
R121
22k
1%(F)
R105
10k
U13
LM393P
2
3
1
U13
LM393P
8
V+
4
V-
0V
VDD24
R120
10k
0V
TP161
0V
VDD3
TP140
C134
C101
R102
10k
24RET
VDD3
U13
LM393P
6
5
7
R124
100
0V
0V
1-6B
THM1
R119
1.5k
1%(F)
R117
18k
1%(F)
VDD3
C126
C103
C159
C102
VDD3
1-2C/2-5D
RSTN
TP164
TP167
R125
68k
R104
18k
1%(F)
0V
C158
C103
C147
C103
1-2F
TNRLED
VDD5
1-2F
RLYOFFN
TP102
R103
18k
1%(F)
C157
C104
(1608)
TP132
1-4A
PEDG_SEN
Q3
DTC143ZUA
C
B
E
C31
C220
10V 12V
0V
TP99
0V
0V
R118
10k
C163
C102
1-2F
HEATERON
C135
C101
VDD5
R123
470k
0V
TP159
1-4A
REG_FRONT_SEN
R127
68k
R94
0
TP119 TP133
TP67
TP239
TP160
TP56
L6
C193
C101
C194
C101
0V
L7
(1608)
0
CN12
1
RELAYOFFN
4
TNRLED
7
HEATERONN
5
24RET
6
+24V
9
S0V
8
+5V
3
FRONT_SEN
B9B-PH-K-S(LF)
2
PEDG_SEN
2
CENTER_THM
3
EDGE_THM
CN9
1
VDD3
4
VDD3
HEATERON
H: HEATER ON
L: HEATER OFF
4.7k
47k
RELAYOFF (FX OPTION)
H: RELAY ON
L: RELAY OFF
LVPS
THM
+
Fig. 3-23

Brother HL-2037 Specifications

General

Brand	Brother
Model	HL-2037
Category	Printer
Language	English