Samsung SV-A130B, Service Manual

Page: 26 / 78

Alignment and Adjustment
Samsung Electronics 5-3
5-2-2 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)
5-2-2 (a) IF THE REMOTE CONTROL ASS’Y IS
NOT AVAILABLE
1. Playback the colorbar alignment tape.
2. Connect CH-1 scope probe to ÒTP02Ó and CH-2
scope probe to ÒTP03Ó. And then, trigger head
switching pulse.
3. Set tracking preset to 11msec (2head : 2.7msec,
4, 6head : 11msec) using the Ò FINE(Tracking,
TRK) Ó button / of the other remote control
assÕy except the remote control assÕy jig for X-5/
X-6 chassis and the normal remote control assÕy for
X-7/X-8 chassis.
4. Connect CH-1 scope probe to ÒTP02Ó and the CH-2
to ÒTP03Ó 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.
5-2-2 (b) IF THE REMOTE CONTROL ASS’Y
(AC93-10039Y/69099-633-252) IS
AVAILABLE
Note : How to use the Ò TEST Ó button.
1. Disattach the inlay of remote control assÕy.
(See Fig. 5-1 and Fig. 5-2)
2. Press the ÒTESTÓ button with the pincers and the
precise driver as shown in Fig. 5-1 and 5-2)
1. When using the Ò INPUT Ó button of remote
control assÕy;
1) Simultaneously press the Ò INPUT Ó button and Ò 1 Ó
button in PB mode.
This will adjust the tracking center automatically.
2) Set the tracking preset using the Ò FINE ( Tracking,
TRK )Ó button of remote control.
3) After adjustment is completed, press the
Ò POWER Ó button to release.
2. When using the Ò TEST Ó button of remote
control assÕy ;
1) Simultaneously press the Ò TEST Ó button and Ò 5 Ó
button in PB mode.
This will adjust the tracking center automatically.
2) Set the tracking preset using the Ò FINE ( Tracking ,
TRK ) button of remote control.
3) After adjustment is completed, press the
Ò POWER Ó button to release.
<Setting of scope>
- Volt/div. : CH-1 = 0.1V - Time/div. : 5msec
CH-2 = 0.2V
CH-2 Probe
TP02
H’D S/W Pulse
CH-1 Probe
TP03
CTL Pulse
Fig. 5-4 Tracking preset adjustment
REMOTE
BUTTONS
TRACKING
TRACKING
CONTROL PULSE REMOVE
PUSH
PUSH
Fig. 5-5 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. 5-6 Location of A/C Head adjustment screw
2.7msec(2 head), 11msec(4, 6 head)