Realistic HTX-100 Service Manual page 52

INTEGRA TED CIRCUIT
IC401
PIN NO
F
Voltage
7ms
1
I
5V=FD-L
ov
! sv-u-u-u-
2
I
I
ov
3
3.4
4
1.7
5
0
6
5.0
7 0
8
5
LCD
Cha:1~m"i1ll
9
0
LCD Ch:JIIIIIIIIIIIL
10 5
LCD
Ch~-:-LJLI
11
0
LCDC~
12 0
LCD Chan:______n_
5V
13 5
LCD Chanoe
ov
12ms
PIN
19~27
I< .. ,
42 "'44
3.4V~
47,49,50,51
1.7V
ov
Figure 1
12ms
I<
._1
PIN 28, 30, 37
5VJlfL
Figure 2
r---
-~~-
5V
3.4V
1.7V
-
..__
ov
Figure 3
~~-5V
- - 3.4V
- - 1.7V
- ov
Figure
4
IC401
PIN NO Voltag - '-• - - - - - --t
14 0
15 Refer to figure 5.
16 Refer to figure 5.
17 Refer to figure 5.
..-------+---- ---------'-- -- --------
18 Refer to figure 5.
19 Refer to figure 1 .
1------· - - - - + - - -- - - - - - - - - -· - -
20 Refer to figure 1 .
21 Refer to figure 1.
..------+---------~----------
22 Refer to figure 1.
23 Refer to figure 1 .
24 Refer to figure 1 .
25 Refer to figure 1 .
26 Refer to figure 1.
27 Refer to figure 1 .
28 Refer to figure 2.
29 Refer to figure 3.
30 Refer to figure 2.
~-----+---------~------- --
31 Refer to figure 3.
32 Refer to figure 3.
33 5
34 Refer to figure 3.
35 Refer to figure 3.
36 Refer to figure 3.
37 Refer to figure 2.
38 Refer to figure 3 .
.._-----+---------~-----------
39 Refer to figure 3.
40 Refer to figure 3.
41 Refer to figure 4.
..------+----------~---------
42 Refer to figure 1 .
43 Refer to figure 1 .
44 Refer to figure 1 .
45 Refer to figure 3.
46 Refer to figure 4.
..-- - - - - + -- - - - -- -
47 Refer to figure 1.
48 Refer to figure 4.
~-----+------------------------
49 Refer to figure 1. - ---- - -t
50 Refer to figure 1 .
51 Refer to figure 1.
~-----+----------------------
5V
52
ov
..------~----------------- ----
-53-
5V
3.4V
1.7V
ov
Figure 5