Alignment and Adjustment
Samsung Electronics
2-3
2-2-2 Linearity adjustment
(Guide roller S, T adjustment)
1) Playback the Mono Scope alignment tape (SP mode).
2) Observe the video envelope signal on an oscillo-
scope (triggered by the video switching pulse).
3) Make sure the video envelope waveform (at its
minimum) meets the specification shown in
Fig. 2-6.
If it does not, adjust as follows :
Note :
a=Maximum output of the video RF envelope.
b=Minimum output of the video RF envelope at the
entrance side.
c=Minimum output of the video RF envelope at the
center point.
d=Maximum output of the video RF envelope at the
exit side.
4) If the section A in Fig. 2-7 does not meet the speci-
fication, adjust the guide roller S up or down.
5) If the section B in Fig. 2-7 does not meet the speci-
fication, adjust the guide roller T up or down.
Fig. 2-6 Envelope Waveform Adjustment
a
a b c d
c,b,d/a
63%
b
c
d
Fig. 2-7 Adjustment Points
A
B
A
B
H'D SWITCHING
PULSE
ENVELOPE
6) Play back the Mono Scope alignment tape (SP mode).
7) Connect an oscilloscope CH-1 to the Envelope and CH-2 to the HÕD SW Pulse for triggering.
8) Turn the guide roller heads with a flat head ( ) driver to obtain a flat video RF envelope as shown in Fig. 2-8.
Fig. 2-8 Guide Roller S, T Height Adjustment
IDEAL ENVELOPE
S HEIGHT
TOO HIGH
S HEIGHT
TOO LOW
T HEIGHT
TOO LOW
T HEIGHT
TOO HIGH
GUIDE ROLLER S
GUIDE ROLLER T
Summary of Contents for SV-DVD1EA
Page 8: ...Product Specifications 2 2 Samsung Electronics MEMO ...
Page 40: ...Troubleshooting 5 20 Samsung Electronics MEMO ...
Page 50: ...Exploded View and Parts List 6 10 Samsung Electronics MEMO ...
Page 62: ...7 12 Electrical Parts List Samsung Electronics MEMO ...
Page 63: ...Samsung Electronics 8 1 8 Block Diagram ...
Page 64: ...Block Diagram 8 2 Samsung Electronics MEMO ...
Page 66: ...PCB Diagrams 9 2 Samsung Electronics 9 1 S M P S ...
Page 67: ...PCB Diagrams 9 3 Samsung Electronics 9 2 VCR Main ...
Page 68: ...PCB Diagrams 9 4 Samsung Electronics 9 3 DVD Main COMPONENT SIDE SOLDER SIDE ...
Page 69: ...PCB Diagrams 9 5 Samsung Electronics 9 4 Function Timer 9 5 DVD Deck ...
Page 70: ...PCB Diagrams 9 6 Samsung Electronics MEMO ...
Page 71: ...Samsung Electronics 10 1 10 Wiring Diagram ...
Page 72: ...Wiring Diagram 10 2 Samsung Electronics MEMO ...
Page 75: ...Schematic Diagrams 11 3 Samsung Electronics 11 1 S M P S ...
Page 76: ...Schematic Diagrams 11 4 Samsung Electronics 11 2 Power Drive ...
Page 77: ...11 3 Function Timer Schematic Diagrams 11 5 Samsung Electronics ...
Page 78: ...Schematic Diagrams 11 6 Samsung Electronics 11 4 System Control Servo ...
Page 79: ...Schematic Diagrams 11 7 Samsung Electronics 11 5 A V ...
Page 80: ...Schematic Diagrams 11 8 Samsung Electronics 11 6 TM Blcok ...
Page 81: ...Schematic Diagrams 11 9 Samsung Electronics 11 7 Digital Audio ...
Page 82: ...Schematic Diagrams 11 10 Samsung Electronics 11 8 Hi Fi ...
Page 83: ...Schematic Diagrams 11 11 Samsung Electronics 11 9 OSD ...
Page 84: ...Schematic Diagrams 11 12 Samsung Electronics 11 10 Input Output ...
Page 85: ...Schematic Diagrams 11 13 Samsung Electronics 11 11 A2 NICAM ...
Page 86: ...Schematic Diagrams 11 14 Samsung Electronics 11 12 SECAM OPTION ...
Page 87: ...Schematic Diagrams 11 15 Samsung Electronics KEY OPTION 11 13 DVD Main Micom AV Decoder ...
Page 88: ...Schematic Diagrams 11 16 Samsung Electronics 11 14 Servo ...
Page 89: ...Schematic Diagrams 11 17 Samsung Electronics 11 16 DVD Deck ...
Page 90: ...Schematic Diagrams 11 18 Samsung Electronics MEMO ...
Page 115: ...2 6 Samsung Electronics Alignment and Adjustment MEMO ...