Samsung TB331VDZ1S/XSA, Service Manual

Page: 94 / 158

Alignment and Adjustments (Electrical)
Samsung Electronics 5-11
5-5-3 Timing Chart of Program S/W
S/W A
(IC601-75)
S/W B
(IC601-74)
END
-SENSOR
(IC601-76)
START
-SENSOR
(IC601-77)
EJECT
CASS IN
UNLOAD RPS R.SLW STILL PB STOP F/R
E/S
L
H
-
-
-
-
-
-
-
S/S
L
L H
-
-
-
-
-
-
-
S/W A
L
L
L
L H
H
H L
L H
H
H L
S/W B
L
L
L H
H
H L
L
L
L H
H
POSITION
EJECT
CASS IN
UNLOAD
R.PS
R.SLOW
STILL
PLAY
STOP
FF/REW
ACTION MODE
EJECT
CASS IN
UNLOAD
R.PS, Z-R.PS
PINCH ROLLER OFF POSITION
STILL, SLOW, F-ADV
PB,T-STOP,REC, PAUSE, F.PS, Z-FPS
STOP, POWER OFF
FF, REW
PROGRAM S/W (SW601)
5-6 Module Deck Adjustment Process
5-6-1 H'D S/W Point Adjustment:
1. Load alignment tape (PAL signal, SPC-SD).
2. Connect oscilloscope, CH-1 to TP201 (H'D
S/W pulse), & CH-2 to TP302 (Video out)
3. Adjust VR201 (H'D S/W pulse) so that the
waveform looks like the one shown below:
6.5 0.5H
+_ VIDEO
OUTPUT
SWITCHING POINT
SW30Hz
PULSE
V.SYNC
CH-2
CH-1