Akai VS-2EGN - Page 54

© CH-2 CH-1 CH-2 CH-I SWITCHING PULSE
| | { t
|
+ | pe - + - 1C3 AN69I4 THRESHOLD LEVEL
| |
|
1 |
TRI7 THRESHOLD LEVEL
®
ee
|
ae
ee
|
"CHI"
V.PULSE
(D2
Cathode)
TRI THRESHOLD LEVEL
TRI7 THRESHOLD LEVEL
“CH2" V.PULSE (TRI Collector)
1 | QUASI-VERTICAL SYNC.
+
!
f
an
4
V.PULSE
OUT
(TRI7
Collector
)
Delayed
Fig. 7-57 Waveform at Each Point
3-4-2 REVIEW MODE,
With
the
REVIEW
mode,
when
TR16
is
turned
on,
C61
is
grounded
(See
Fig.
7-55).
SERVO 12V
RI30 10K
R129 100K
SWITCHING
6
f
irae
e
5
ok.
cee
BS
c62
1/50
QUASI-VERTICAL
SYNS
|
aneoia
—3@—
4t
{F-——O
PULSE OUT
aN
ae
ae
C22
0.0068
TRIT
Fig. 7-58 Quasi-Vertical Synchronization Pulse Generator
As a result, the Switching Pulse delay is increased to 720
US.
Service Manual VS-2EGN
Sl