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18
Ga (x74) \_ YES
YES
Emitter
Q5 (X74) base'
waveform
x
Q13, 14, 15, 46
D? (X73)
D10 (x74)
05, 6, 7, 8, 9,
10
U3c (X74)
Q4 (x74)
fr inte non-signal, and at AUTO
can
4U30 Pin 15
=3.3 VDC
(X74)
Waveform
oN
use Pin 4
1. VDC.
{x74}
'Waveform
YES
YES
U3a, b, d (X74)
Won
javetorm
2b Pin 14!
(X74)
Waveform
NO
Q19, 20, D23
(x74)
D2~5 (x74)
Us, D1 (X73)
Note: Check the signal refer to table right.
TROUBLESHOOTING
O35, 36, 37, 47
D16 (X73)
D114 (X74)
037, 38 D9 D13
an, 2
QM, 12,13, 14
G24, 12 (x74)
(X74)
D2& 27 (x74)
SpelX74)
x74)
w
05 (X74)
508
Base waveform
9
-0.3
U3e (X74)
Pin 14
ae
waveform
+33
Waveform which synchronized at the center of the signal when applied a sine wave signai for 6 div.
20 (X73)
1"
Q23 Collector
B20 (X73)
u2b
Q15, DI4 (X74)
3.3
U2b Pin 9, 14
B15, 24
Q16, U4a {x74}
U4b Pin 12
fe)
Wavetorm at auto free-run.
P14 (X74)
P14 (X74)
@LP7 |
ADD ues Pin 4 |Pin 15
P14 (X74)
e
ie]
t 8
=
Qa =x
nN
U2a, D6~8
(x74)
Le
es Oe
027 base
(X74) X signal
waveform
PB
Pin 2
(x74)
P5
Pin 1
x74)
85
70
55
€S-1022, C5-1020
#9 Pin 4 ,
(X74) K+, X=
waveform
027~35 021,
28, 29 (X74)
ws
Ww
fo
Ey
mash,
Pin 4
027
x74)
2
Base
=
aa
7a,
ad
0
*®
"3.36
Ps
a30
Pin 6
Base
-3.6
(x74)
(x73)
45
—3.84-
Condition
Apply a sine wave signal to X input for 6 div vertical amplifude.
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