Table of Contents
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CRT BOARD (Component Location)
Q701
B-OUT
Q711
Q721
R-OUT
G-OUT
MAIN BOARD (Component Location)
Q613
POWER OUT
C
T611
CONVERTER
B
E
TRANS.
Q432
HORIZ. OUT
C
T401
F.B.T.
(Solder side)
IC801
CPU
IC802
MEMORY
IC201
IF/VIDEO/CHROMA
B
E
T431
H-DRIVE
TRANS.
Waveforms & Voltages
(On the Main Board)
IC201 (IF/VIDEO/CHROMA) ::
Pin-1: GND
10: 4.6V
19: 2.3V
28: 2.6V
37:
46: 2.8V
IC191
Pin-1: 9.2V
IC501 (VERT. OUT)
Pin-1: GND
IC001 (AUDIO AMP.)
Pin-1: 6.3V
10: 12.3V
IC802 (MEMORY)
Pin-1 GND
IC801 (CPU)
Pin-1: 4.7V
10: 2.5V
19:
28: 5.0V
Q140
B 5.7V
C
0V
E 6.3V
Q661
B
9.9V
C 11.3V
E
9.3V
p
IC201-pin11
<Sandcastle>
V
0
.
4.9Vp-p
5
p
IC201-pin38
<Y out>
V
4
.
1
1.8Vp-p
Q432-B
<H out>
23.0Vp-p
(On the CRT Board)
Q701
B
2.4V
C 86.2V
E
1.9V
Q701-C
<B-out>
IC001
AUDIO AMP.
94.4Vp-p
A101
TUNER
2:
4.5V
3:
0.4V
4:
5.3V
5:
1.0V
6:
1.5V
11:
0.6V
12:
2.4V
13:
0V
14:
4.7V
15:
5.4V
20:
2.4V
21:
4.1V
22:
8.6V
23:
2.5V
24:
2.6V
29:
3.4V
30:
2.5V
31:
2.7V
32:
3.1V
33:
3.7V
0V
38:
1.6V
39:
2.7V
40:
3.1V
41:
1.4V
42:
9.2V
47:
2.3V
48:
2.3V
49:
4.0V
50:
4.1V
51:
3.1V
IC651
2: GND
3:
5.0V
Pin-1: 12.9V
2: GND
3:
2: 12.5V
3: 24.6V
4:
4.1V
5:
4.1V
6: 24.5V
2:
GND
3:
6.3V
4:
0.7V
5:
3.0V
6:
5.5V
.
2:
GND
3:
GND
4:
GND
5:
5.0V
6:
5.0V
z
i
r
2:
4.6V
3:
5.0V
4:
5.0V
5:
GND
6:
1.8V
o
11:
0.9V
12:
0V
13:
4.9V
14:
3.3V
15:
2.6V
0V
20:
0V
21:
0V
22:
0V
23:
GND
24:
GND
29:
0V
30:
2.4V
31:
4.9V
32:
5.0V
33:
0V
H
Q141
Q171
Q212
.
Q213
Q261
Q431
Q432
B 5.9V
B 3.5V
B
0V
B 0.6V
B 1.6V
B 0.3V
B 2.5V
C
0V
C 9.3V
C 4.7V
z
C
0V
C
0V
C 10.5V
C 131.7V
E 6.5V
E 2.9V
E
0V
i
E
0V
E 2.3V
E
0V
E 2.5V
r
Q684
Q681
Q683
Q685
Q686
Q861
Q871
B
0V
B 23.9V
B 0.7V
o
B
0V
B 36.2V
B 4.4V
B
0V
C 9.9V
C 24.5V
C
0V
C 36.1V
C
0V
C 4.9V
C 4.8V
E
0V
E 24.6V
E
0V
E 1.0V
E 36.2V
E 5.0V
E
0V
p
p
H
.
.
.
-
-
z
z
z
p
i
i
i
IC201-pin12
IC201-pin18
IC201-pin19
.
<H drive>
<R out>
<G out>
r
r
r
t
V
r
o
o
o
.
5
e
.
z
p
H
p
H
p
H
i
-
-
-
6
5.9Vp-p
5.2Vp-p
p
6.5Vp-p
V
.
r
-
p
p
z
IC201-pin39
IC201-pin52
o
IC501-pin2
i
<Sync in>
<IF out>
p
<V out>
V
r
V
p
p
H
V
-
2
o
7
-
.
.
7
p
p
p
H
1
1.8Vp-p
1
1.7Vp-p
2
4
44.0Vp-p
-
V
V
Q431-C
Q432-C
Q613-C
p
<H drive>
<H out>
<Power out>
iz.
0
0
V
0
5
0
0
5
Hor
5
23.2Vp-p
960Vp-p
520Vp-p
1
Q711
Q721
Q751
B
2.5V
B
2.3V
B 9.3V
C 84.0V
C 88.9V
C
0V
E
2.0V
E
1.8V
E 9.1V
Q721-C
Q701-B
Q721-B
<B drive>
<G-out>
<G drive>
4.6Vp-p
5.3Vp-p
84.8Vp-p
7:
1.5V
8:
4.9V
9:
0V
16:
5.1V
17:
4.4V
18:
2.5V
25:
5.2V
26:
4.8V
27:
1.0V
34:
1.6V
35:
3.0V
36:
1.9V
43:
1.7V
44:
1.7V
45:
3.5V
52:
5.6V
5.0V
7:
1.8V
7:
5.5V
8:
GND
9:
5.5V
7:
GND
8:
5.0V
7:
2.5V
8:
5.0V
9:
1.4V
16:
0V
17:
4.8V
18:
4.1V
25:
GND
26:
GND
27: 4.5V:
34:
4.9V
35:
5.0V
36:
5.0V
Q576
Q611
Q612
Q613
Q631
.
B
0V
B 18.5V
B
0V
B
0V
B 3.5V
z
C 4.5V
C -0.9V
C -0.8V
C 329V
.
C 18.0V
i
E
0V
E 17.6V
E -0.9V
E -0.8V
E 3.3V
t
r
r
Q881
Q886
o
B -5.9V
B 0.7V
e
C 4.1V
C
0V
E
0V
E
0V
p
H
p
V
-
-
.
.
z
p
.
p
IC201-pin20
IC201-pin21
IC201-pin36
i
t
t
<B out>
<V drive>
<CVBS int.>
r
r
r
V
V
e
o
e
7
5
.
.
p
V
p
H
p
V
1
0.9Vp-p
5.4Vp-p
-
2
2.3Vp-p
-
-
p
p
IC501-pin4
p
IC801-pin18
IC801-pin17
<V drive>
<H sync>
<V sync>
V
V
V
5
0
0
.
.
.
2.3Vp-p
5
4.9Vp-p
5
Q711-C
Q711-B
<R-out>
<R drive>
112Vp-p
6.6Vp-p
F5SS
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