1.3.13 Video I/O - Brother HL-5130 Service Manual

1.3.13 Video I/O

The video signal output from the ASIC is reversed through a transistor and output after being
corrected by the buffer IC.
<HL-5130/5140/5150D>
VDD3
R22
680
TP230
VDON0
3D
BDN
TP232
2D
ENBN0
3D
<HL-5170DN>
VDD3
R21
680
TP230
VDON0
2D
BDN
TP232
1D
R12
ENBN0
2D
VDD5
U1
C14
1
B
TP233
2
C471
A
Q1
TP231
C
R21
TC7SH08FU
B
680
E
C3735
R6
R14
680
0
0V
R8
0
VDD5
U2
VCC
R15
1/10W
C27
330
1
B GND
TP233
2
C471
A
Q3
TP231
C
R19
TC7SH08FU
B
680
E
C3735
R16
680 R10
0
0V
0
HL-5130/5140/5150D/5170DN SERVICE MANUAL
VDD3
5
VCC VDD5
C3
C103
3
GND 0V
4
Y
0V
VDD5
TP234
Fig. 3-25
VDD3
5
VDD5
C18
C103
3
0V
4
Y
0V
VDD5
TP234
0V
Fig. 3-26
3-15
VDD3
C6
CN3
R5
C103
1k
BLM18RK221
L1
5
4
3
TP235
R9
1
100
2
0V
VDD3
C21
CN1
R8
C103 1k
BLM18RK221
L3
5
0
L4
4
0
L5
3
TP235
R13
0
L7
1
100
0
L6
2
0V
DATA1
GND
+5V
BD
ENB1
DATA1
GND
+5V
BD
ENB1