![background image](http://html1.mh-extra.com/html/benq/q74a/q74a_service-manual_2734279030.webp)
Q74A Service Manual
-30-
D1
1
BA
V99
1
2
3
C3
5
100pF
SD
A
-D
V
I
D9
BA
V9
9
1
2
3
9
RX
0
-
+5
V
C4
R3
1
1
0
R4
8
3
3
D1
2
BA
V99
1
2
3
R4
6
4.
7K
RX
2
-
D1
3
BA
V9
9
1
2
3
D1
6
BA
V9
9
1
2
3
C3
6
10
0p
F
D1
4
BA
V9
9
1
2
3
DE
T
_
D
V
I
J6
D
V
I_30P
3
2
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
31
34
3
2
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
C1
C2
C3
C4
C5
31
34
RX
2
-
R4
5
4.
7K
RX
1
-
SD
A
_
D
V
I
RX
0
+
U5
AT
24
C
0
2(
S
O
IC
)
1
2
3
4
5
6
7
8
A0
A1
A2
VS
S
SD
A
SC
L
WP
VC
C
DZ
4
UDZS
5.6
B
1
2
8
R3
5
1
0
R4
4
8
2
0
24
RX
C+
C1
RX
C-
R2
9
1
0
RX
0
-
D
V
I(
D
ig
t
ia
l
V
isua
l
In
t
e
r
f
a
ce
)
29P
0
DV
I I
N
P
U
T
H
L
720D
Ti
tl
e
Do
c
u
me
n
t Nu
mb
e
r
Re
v
S
hee
t
of
DE
S
IG
N
CHE
CK
A
P
P
R
O
V
A
L
W
o
o
Y
o
ung T
e
le
c
o
m
C
o
.,
Lt
d.
M
odel
RX
2
+
RX
0
+
R4
7
3
3
DVI_INPUT
SC
L_
D
V
I
C
3
4
0
.1uF
RX
C+
R3
7
1
0
E
E
P
_
R
O
M
+5
V
RX
C-
R4
0
1
0
RX
1
-
D1
0
BA
V9
9
1
2
3
RX
1
+
DE
T
_
D
V
I
SC
L
-D
V
I
DZ
5
UDZS
5.6
B
1
2
16
1
R4
3
1
0
K
DZ
6
UDZS
5.6
B
1
2
D1
5
BA
V9
9
1
2
3
+5
V
R3
3
1
0
C2
RX
1
+
R3
6
1
0
R3
9
1
0
RX
2
+
17
R3
0
1
0
C3
R3
8
1
0
All manuals and user guides at all-guides.com
Summary of Contents for Q74A
Page 1: ...Q74A Service Manual All manuals and user guides at all guides com a l l g u i d e s c o m...
Page 18: ...Q74A Service Manual EXPLODE VIEW Q74A 18 All manuals and user guides at all guides com...
Page 27: ...Q74A Service Manual 27 Q74A Service Manual 27 All manuals and user guides at all guides com...
Page 33: ...Q74A Service Manual Inverter Circuit 33 All manuals and user guides at all guides com...
Page 35: ...Q74A Service Manual AD B D TOP PATTERN Q74A 35 All manuals and user guides at all guides com...
Page 37: ...Q74A Service Manual AD B D MASK TOP Q74A 37 All manuals and user guides at all guides com...
Page 38: ...Q74A Service Manual AD B D MASK BOTTOM Q74A 38 All manuals and user guides at all guides com...