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On the Sub/Def. Board(2)
IC361-pin1
<H sync in>
10 µ s/div.
2V/div.
2V/div.
DC=0V
IC2311-pin7
IIC2361-pin7
<AFC2>
5 µ s/div.
5V/div.
0.5V/div.
DC=0V
IC2391-pin1
IC2391-pin7
<Pcc out>
2V/div.
2ms/div.
2V/div.
DC=0V
On the Video Board
IC2102
1
0V
2
0.1V
10
0.1V
11
0V
IC2202
1
0.4V
2
0.4V
IC2203
1
0V
2
5.1V
10
0V
11
5.1V
IC2206
1
1.2V
2
0V
Q2101
Q2102
E
5.1V
E
5.1V
C
9.1V
C
9.1V
B
5.7V
B
5.7V
Q2110
Q2111
E
3.8V
E
6.9V
C
7.4V
C
9.1V
B
4.4V
B
7.5V
IC361-pin3
IC361-pin10
<H osc>
<H drive out>
10 µ s/div.
2V/div.
DC=0V
IC2371-pin1
<V drive>
<V drive out>
2ms/div.
5V/div.
DC=0V
<Pcct>
10 µ s/div.
DC=0V
3
3.7V
4
12
9.1V
13
9.1V
3
0.4V
4
3
5.1V
4
5.1V
12
5.0V
13
0.1V
3
0V
4
Q2103
Q2104
E
5.0V
E
5.0V
C
9.1V
C
9.1V
B
5.6V
B
5.6V
Q2112
Q2201
E
4.3V
E
4.3V
C
9.1V
C
9.1V
B
4.8V
B
5.1V
IC361-pin12
<V drive out>
10 µ s/div.
5V/div.
2ms/div.
DC=0V
DC=0V
IC2371-pin7
<AFC>
2ms/div.
1V/div.
2ms/div.
DC=0V
0V
5
4.5V
6
14
3.8V
15
0V
5
4.7V
6
5
0.2V
6
14
0V
15
0V
5
0.1V
6
Q2105
Q2106
E
4.1V
E
C
9.1V
C
B
4.8V
B
Q2203
Q2204
E
0V
E
C
0.6V
C
B
0.2V
B
-26-
IC361-pin18
<V osc>
2V/div.
2ms/div.
DC=0V
IC2381-pin1
<V drive>
5V/div.
2ms/div.
DC=0V
DC=0V
3.3V
7
7.6V
8
4.2V
16
9.1V
4.7V
7
4.7V
8
0V
7
5.0V
8
5.0V
16
5.0V
2.2V
7
0.1V
8
Q2107
Q2108
4.1V
E
3.6V
E
9.1V
C
0V
C
4.9V
B
3.1V
B
9.1V
0V
5.6V
IC361-pin19
<V sync in>
2V/div.
2ms/div.
DC=0V
IC2381-pin7
<V drive>
0.5V/div.
2ms/div.
DC=0V
0V
9
0.1V
5.1V
0V
9
0.1V
0V
Q2109
2.9V
E
3.6V
9.1V
C
9.1V
3.5V
B
4.3V
Service Manual EH1 chassis
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