Samsung SV-4000W, Service Manual

Page: 22 / 127

Alignment and Adjustment
Samsung Electronics 6-3
6-2-2 X-Point(Tracking center) adjustment
(See the 2-2-1 (d) AC HEAD
POSITION(X-POINT) ADJUSTMENT
on page 2-3 of the mechanical
manual)
6-2-2 (a) IF THE REMOTE CONTROL ASS’Y IS
NOT AVAILABLE
1. Playback the color bar alignment tape.
2. Connect CH-1 scope probe to “TP02” and CH-2
scope probe to “TP01”. And then, trigger head
switching pulse.
3. Set tracking preset to 11msec (2head : 2.7msec,
4, 6head : 11msec) using the “ FINE(Tracking,
TRK) ” button / of the other remote control
ass’y except the remote control ass’y jig for X-5/
X-6 chassis and the normal remote control ass’y for
X-7/X-8 chassis.
4. Connect CH-1 scope probe to “TP02” and the CH-2
to “TP01” trigger on CH-1.
5. Insert the adjusting driver (+) into X-position
adjusting gear. Adjust the driver in either direction
for maximum envelope waveform.
Note : Since the adjusting gear unit may be damaged, do
not adjust by force when adjusting the X-point using the
adjusting driver (+). After turn the X-point adjusting screw
(D) counterclockwise a little, perform the adjustment.
After adjustment is completed, tighten the screw.
6-2-2 (b) IF THE REMOTE CONTROL ASS’Y
(SV-4000W UNIT) IS AVAILABLE
1. Connect a jumper or solder land (2 point) at service
option (W750) on the timer PCB.
2. Press the No. 5 (Tracking center) button within 6
seconds of remote control ass’y.
3. Adjust it with FINE (Tracking max.)/ (Tracking
min.) button of remote control ass’y.
4. After completing repairs, turn power off in order
to reset.
<Setting of scope>
- Volt/div. : CH-1 = 0.1V - Time/div. : 5msec
CH-2 = 0.2V
CH-2 Probe
TP01
H’D S/W Pulse
CH-1 Probe
TP02
CTL Pulse
Fig. 6-3 Tracking preset adjustment
REMOTE
BUTTONS
TRACKING
TRACKING
CONTROL PULSE REMOVE
PUSH
PUSH
Fig. 6-4 Tracking preset adjustment
SCREW(C)
TILT ADJUST
X-POSITION
ADJUST GEAR
HOLE
SCREW(A)
HEIGHT ADJUST
SCREW(B)
AZIMUTH ADJUST
SCREW(D)
X-POINT LOCKING
Fig. 6-5 Location of A/C Head adjustment screw
2.7msec(2 head), 11msec(4, 6 head)