Samsung SV-A20GK Service Manual page 20

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 ÒFINE(Tracking,
TRK)Ó button /
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.
<Setting of scope>
- Volt/div. : CH-1 = 0.1V
CH-2 = 0.2V
CH-2 Probe
TP02
H'D S/W Pulse
CH-1 Probe
TP03
CTL Pulse
2.7msec(2 head), 11msec(4, 6 head)
Fig. 5-4 Tracking preset adjustment
REMOTE
CONTROL PULSE REMOVE
BUTTONS
PUSH
TRACKING
TRACKING
PUSH
Fig. 5-5 Tracking preset adjustment
Samsung Electronics
of the other remote control
- Time/div. : 5msec
SCREW(B)
AZIMUTH ADJUST
SCREW(A)
HEIGHT ADJUST
Fig. 5-6 Location of A/C Head adjustment screw
5-2-2 (b) IF THE REMOTE CONTROL ASS'Y
(AC93-10039Y/69099-633-252) IS
AVAILABLE
Note : How to use the ÒTESTÓ 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 ÒINPUTÓ button of remote
control assÕy;
1) Simultaneously press the ÒINPUTÓ button and Ò1Ó
button in PB mode.
This will adjust the tracking center automatically.
2) Set the tracking preset using the ÒFINE(Tracking,
TRK)Ó button of remote control.
3) After adjustment is completed, press the
ÒPOWERÓ button to release.
2. When using the ÒTESTÓ button of remote
control assÕy ;
1) Simultaneously press the ÒTESTÓ button and Ò5Ó
button in PB mode.
This will adjust the tracking center automatically.
2) Set the tracking preset using the ÒFINE (Tracking,
TRK) button of remote control.
3) After adjustment is completed, press the
ÒPOWERÓ button to release.
Alignment and Adjustment
SCREW(C)
TILT ADJUST
X-POSITION
ADJUST GEAR
HOLE
SCREW(D)
X-POINT LOCKING
5-3