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. If the TV set was on normal run mode before switching off, the microcontroller delivers
horizontal drive voltage at pin 33 and picture appears on screen.
. If the TV set was on stand-by mode before switching off, the microcontroller switches TV set
to stand-by mode, decreasing power pin voltage (pin 63). This matter will be explained on
paragraph 5-9-2-b.
* Reset pulse circuit
from I823
pin 3
R591
100
DC supply voltage
I823 pin 3
reset pulse
I501 pin 60
Q510
W
R592
10k
W
D591
D Z 2 . 4
0V
V
0
Reset pulse circuit and corresponding waveforms
Service manual CL2554AN / CL2854AN
R594
Q511
10K
W
R593
10K
W
3.0V
1.2V
3.0V
1.2V
- 50 -
C501
+
50V
10
F
m
to I501
pin 60
3.3V
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