Samsung SV-A130 IK, Manual

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2 SAMSUNG SV-A130 IK
2-1-4 How to Connect X-5 chassis jig
1. Unplug the power cord from AC outlet.
2. Remove the deck ass’y from main PCB
3. To emulate the function of the sensors, place
a jumper or solder land (two point) at service
option (W750) on the function-timer PCB.
(see diagram below).
Note: After completing repairs, SW715 on the
function PCB in order to reset.
4. Insert wafers of drum motor, capstan motor
and loading motor on X-5 chassis jig into
each of the connectors of deck ass’y, and
then secure with three screws.
5. Solder the 3 leads of the jig cable to “CN605”
on the main PCB.
6. Apply power to the function PCB.
7. Insert a test tape into the housing ass’y.
8. Simultaneously touch the start and end
sensor LEDs on the PCB, so that the tape
loads automatically. After the tape is loaded,
all of the function buttons on the function PCB
can be used.
9. If the test tape is ejected while the jig is in
use, attempt to re-load the tape by simultane-
ously touching the start and end sensor
LEDs. If the tape still does not load, reset the
function PCB by pressing SW715.
Alignment & Adjustment
Note: After replacing the ass’y full deck, the
ass’y main, the cylinder ass’y and the micom
(IC601), the remote control ass’y can be used to
adjust the “X-point (tracking center) adjustment”
and “Head S/W point” adjustment.
5-1 Reference
5-1-1 The type of remote control ass’y
1. Remote control ass’y (AC93-10039Y/69099-
633-252) is specified as a service jig in the
service manual of X-5 /X-6(DX5-R/DX5-RC/
DX6-R/DX6-RC) chassis.
(See Fig. 5-1)
2. Normal remote control ass’y for X-7/X-8
(DX7-R/DX7-RC/DX8-R/DX8-RC) chassis.
(See Fig. 5-2)
5-1-2 How to identify between normal remote
Connecting X-5 Jig
control ass’y and multi remote control ass’y
for X-71X-8 chassis (See Fig. 5-2)
1. The color of some buttons related to TV
function are gold.
2. Audio button is added instead of the test
button hidden behind of inlay.
3. The positions of some buttons are different.
Fig. 5-1 Remote Control Assy Jig for X-5/X-6
Chassis (AC93-1 0039Y169099-633-252)
Fig. 5-2 Remote Control Assy for X-7/X-8
Chassis
Mechanical Adjustment
5-2-1 The number and position of test point
Fig. 5-3 The position of test point (Main PCB-
Component side)
5-2-2 X-Point(Tracking center) adjustment (See
the 2-2-1 (d) AC HEAD POSITION(X-POINT)
ADJUSTMENT
5-2-2 (a) IF THE REMOTE CONTROL ASSY IS
NOT AVAILABLE
1. Playback the colorbar alignment tape.
2. Connect CH-1 scope probe to “TP02” and
CH-2 scope probe to “TP03”. And then, trigger
head switching pulse.
3. Set tracking preset to llmsec (2head 2.7msec,
4, 6head: llmsec) 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 “TP03” 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 adjust-
ment. After adjustment is completed, tighten the
screw.
Fig. 5-4 Tracking preset adjustment
Fig. 5-5 Tracking preset adjustment
Fig. 5-6 Location of A/C Head adjustment screw
5-2-2 (b) IF THE REMOTE CONTROL ASSY
(AC93-10039Y/69099-633-252) IS AVAILABLE
Note: How to use the “TEST” button.
1. Disattach the inlay of remote control assy.
(See Fig. 5-1 and Fig. 5-2)
2. Press the “TEST” button with the pincers and
the precise driver as shown in Fig. 5-1 and 5-
2)
1. When using the “INPUT” button of remote
control ass’y;
1) Simultaneously press the “INPUT” button and
“1” button in PB mode. This will adjust the
tracking center automatically.
2) Set the tracking preset using the“FINE
(Tracking, TRK)” button of remote control.
3) After adjustment is completed, press the
“POWER” button to release.
2. When using the “TEST” button of remote
control ass’y;
1) Simultaneously press the “TEST” button and
“5” button in PB mode. This will adjust the
tracking center automatically.
2) Set the tracking preset using the “FINE
(Tracking, TRK) button of remote control.
3) After adjustment is completed, press the
“POWER” button to release.
5-2-2 (b) IF THE NORMAL REMOTE CONTROL
ASSY OF X-71X-8(DX7-RIDX7-RCl DX8-R/
DX8-RC) CHASSIS IS AVAILABLE
Note 1: Two kinds of remote control ass’y are
used for X-7/X-8(DX7-R/DX7-RC/DX8-R/DX8-
RC) chassis.
1. One is a normal remote control ass’y, the
other is a multi remote control ass’y
2. All adjustments are adjusted by normal
remote control ass’y only.
3. For the identification of normal remote control
ass’y and multi remote control ass’y.
Note 2: How to use the “TEST” button.
1. Disattach the inlay of remote control ass’y.
(See Fig. 5-1 and Fig. 5-2)
2. Press the “TEST” button with the pincers and
the precise driver as shown in Fig. 5-1 and 5-
2)
1. When using the “INPUT” button of remote
control ass’y;
1) Simultaneously press the “INPUT” button and
“1” button in PB mode. This will adjust the
tracking center automatically.
2) Set the tracking preset using the
“FINE(Tracking,
TRK)” button of remote control.
3) After adjustment is completed, press the
“POWER” button to release.
2.When using the “TEST” button of remote
control ass’y;
1) Simultaneously press the “TEST” button and
“5” button in PB mode. This will adjust the
tracking center automatically
2) Set the tracking preset using the “FINE
(Tracking, TRK) button of remote control.
3) After adjustment is completed, press the
“POWER” button to release.
Electrical Adjustment
5-3-1Head S/W Adjustment
Note: Only remote control ass’y can adjust.
5-3-1 (a) IF REMOTE CONTROL ASSY (AC93-1
0039Y/69099-633-252) IS AVAILABLE
1. When using the “INPUT” button of remote
control ass’y;
1) Insert an SP tape into the housing ass’y.
2) Press the “PLAY” button.
3) Press the “INPUT” button and “3” button
simultaneously.
4) This will adjust the head S/W point adjust-
ment automatically.
5) After the adjustment is completed, press
“POWER” button to release.
2. When using the “TEST” button of remote
control ass’y;
1) Insert an SP tape into the housing ass’y.
2) Press the “PLAY” button.
3) Press the “TEST” button and “SPILP” buttons
simultaneously.
4) This will adjust the head S/W point adjust-
ment automatically.
5) After adjustment is completed, press the
“POWER” button to release.
5-3-1 (b) IF NORMAL REMOTE CONTROL
ASSY FOR X-71X-8(DX7-RIDX7-RC/DX8-R/
DX8-RC) CHASSIS IS AVAILABLE
1. When using the “INPUT” button of remote
control ass’y;
1) Insert an SP tape into the housing ass’y.
2) Press the “PLAY” button.
3) Press the “INPUT” button and “3” buttons
simultaneously.
4) This will adjust the head S/W point adjust-
ment automatically.
5) After the adjustment is completed, press
“POWER” button to release.
2. When using the “TEST” button of remote
control ass’y;
1) Insert an SP tape into the housing ass’y.
2) Press the “PLAY” button.
3) Press the “TEST” button and “SPEED”
buttons simultaneously.
4) This will adjust the head S/W point adjust-
ment automatically.
5) After adjustment is completed, press the
“POWER” button to release.
5-3-2 RF AGC Adjustment
5-3-2 (a) ADJUSTMENT PROCEDURES
1. “F-F” (stop mode), RF signal.
2. TP07 and VR401.
3. Apply PAL color bar signal to the video input
terminal of the TV channel generator and set