Panel I/O - Brother HL-2030 Service Manual

CHAPTER 3 THEORY OF OPERATION
1.3.9

Panel I/O

The interface with the panel board is connected by ASIC.
< HL-2030/2040 >
FRONT_COVER_SEN
< HL-2070N >
FRONT_COVER_SEN
TP114
PNLLED3
TP118
1-4E
PNLLED2
TP122
1-4E
PNLLED1
TP125
1-4D
PNLLED0
1-4D
TP128
PNLSW0
1-3D
C85
C101
0V
TP55
R51
PNEW_SEN
TP54
1-4D
R52
1-3E
C38 C40
C102
0V
TP80
R48
PNLLED3
TP71
1-2E
R44
PNLLED2
TP60
1-2E
R39
PNLLED1
TP53
1-2E
R36
PNLLED0
1-2E
TP68
PNLSW0
1-1E
C52
C101
0V
TP86
PNEW_SEN
TP89
1-4B
1-4A
C55
C102
0V
R87 150
150
R88
R89
150
R91
150
R92
1k
VDD3
R98
C81 C83 C79 C80
1k
C101
C101
VDD3
R101 R103
2.2k
4.7k
100
100
C136
C102 C101
0V
Fig. 3-18
150
150
150
150
R50
1k
VDD3
R45
1k
C76
C101
C73 C68
C101
C101
VDD3
R31
4.7k
R46
100
R53
100
C60
C195
C102
C101
0V
Fig. 3-19
3-14
PANEL
L1
0
2
PNLLED3
L2
0
3
PNLLED2
L3
0
4
PNLLED1
L4
0
5
PNLLED0
8
PNLSW0
C101
C101
6
PNEW_SEN
7
F_COVER_SEN
C137
C101 1
0V GND
9615S-08A-PP-A
PANEL
L8
0
2
PNLLED3
L9
0
3
PNLLED2
L10
0
4
PNLLED1
L11
0
5
PNLLED0
8
PNLSW0
C61
C101
R28
2.2k
6
PNEW_SEN
7
F_COVER_SEN
C196
1
0V
GND
C101
9615S-08A-PP-A
CN6
CN6
Confidential