6-3-2 RF Adjustment
1. AFT
1) Apply 38.9MHz (90dbu) to W415 connected TM
Block (U401) pin 12 with pattern generator.
2) Connect voltmeter to the pin 15 of IC401.
3) Adjust TL401 for DC2.6 ± 0.1V.
4) Connect voltmeter to the pin 15 of IC402
5) Adjust TL402 for DC2.6 ± 0.1V.
2. AGC
1) Receive CH2 (48.25MHz, 70dBu:B/G) with TV CH
generator at E-E mode.
2) Connect DC voltmeter to W424
3) Adjust VR401 for DC4.3 ± 0.2V.
Alignment and Adjustment
6-4
Samsung Electronics
6-3 Electrical Adjustment
6-3-1 Servo Adjustment
1. Head S/W
Note :
Only remote control ass’y can adjust.
1) Connect a jumper or solder land (2 point) at
service option (W750) on the timer PCB.
2) Press the speed button within 6 seconds Head
S/W adjustment is operated automatically.
3) After completing repairs, turn power off in order
to reset.
* Composition for RF AGC adjustment
PAL Color bar
signal out
PAL Pattern
generator
TV CH Generator
CH 2 (48.25MHz)
Attenuator
DC Voltmeter
VCR
ANT IN
W424
70dBu
IF PCB (Component side)
Pattern generator
GROUND
BNC Cable
Содержание SV-4000W
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Страница 111: ...Schematic Diagrams Samsung Electronics 12 7 IC601 HD6433977RAF ...
Страница 113: ...Schematic Diagrams Samsung Electronics 12 9 IC301 SS11501M IC302 LA7411 IC303 SS23378M ...
Страница 114: ...Schematic Diagrams 12 10 Samsung Electronics 12 6 Hi Fi Audio ...
Страница 115: ...Schematic Diagrams Samsung Electronics 12 11 IC501 TA1246F IC502 LA7256 ...
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Страница 117: ...Schematic Diagrams Samsung Electronics 12 13 12 8 IF ...
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Страница 119: ...Schematic Diagrams Samsung Electronics 12 15 IC901 LC74761 9682 ...
Страница 120: ...Schematic Diagrams 12 16 Samsung Electronics 12 10 I O PB PROCESS EE PROCESS ...
Страница 122: ...Schematic Diagrams 12 18 Samsung Electronics 12 12 Decoder ...
Страница 124: ...Schematic Diagrams 12 20 Samsung Electronics 12 13 Encoder ...
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