Alignment and Adjustment
5-6
Samsung Electronics
Test point
5-3-2 RF AGC Adjustment
Step Adjustment Item
1. Mode and input signal/
alignment tape
2. Test point and ADJ. part
3. Result and Remarks
ADJ. point
5-3-2 (a) ADJUSTMENT PROCEDURES
1. ÒE-EÓ (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
channel selector to CH 2 (48.25MHz).
4. Adjust the point signal level so that the output of
attenuator is 70dBu.
5. Apply the output of attenuator to the ANT IN
terminal of VCR.
6. Set the channel of VCR to CH 2.
7. Connect DC voltmeter to TP07.
8. Adjust VR401 for DC 3.7 ± 0.1V.
* 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
TP07
70dBu
GND
CTL
TP01
H'D SW
V.ENV
A.OUT
V.OUT
AGC
SCART CTL
TP02
TP03
TP04
TP05
TP06
TP07
TP08
VR401
Main PCB (Component side)
Summary of Contents for SV-A20GK
Page 7: ...Reference Information 2 4 Samsung Electronics MEMO ...
Page 17: ...Disassembly and Reassembly 4 8 Samsung Electronics MEMO ...
Page 25: ...Alignment and Adjustment 5 8 Samsung Electronics MEMO ...
Page 35: ...Exploded View and Parts List 6 10 Samsung Electronics MEMO ...
Page 43: ...7 8 Samsung Electronics Electrical Parts List MEMO ...
Page 45: ...Block Diagrams 8 2 Samsung Electronics 8 1 Overall Block Diagram ...
Page 46: ...Block Diagrams Samsung Electronics 8 3 8 2 System Control ...
Page 47: ...Block Diagrams 8 4 Samsung Electronics 8 3 Video ...
Page 48: ...Samsung Electronics 10 1 10 Wiring Diagram ...
Page 51: ...Schematic Diagrams Samsung Electronics 11 3 11 1 S M P S POWER OPTION OPTION ...
Page 52: ...Schematic Diagrams 11 4 Samsung Electronics 11 2 System Control Servo ...
Page 53: ...Schematic Diagrams Samsung Electronics 11 5 IC601 HD6433977 RA10F ...
Page 55: ...Schematic Diagrams Samsung Electronics 11 7 IC301 SS11511M IC302 LA7411 IC303 SS23377M ...
Page 57: ...Schematic Diagrams Samsung Electronics 11 9 IC301 SS11511M IC302 LA7416 IC303 SS23377M ...
Page 58: ...Schematic Diagrams 11 10 Samsung Electronics 11 5 IF SYSCON SERVO SMPS POWER ...
Page 59: ...Schematic Diagrams Samsung Electronics 11 11 IC401 TDA9800 ...
Page 60: ...Schematic Diagrams 11 12 Samsung Electronics 11 6 I O ...
Page 61: ...Schematic Diagrams Samsung Electronics 11 13 11 7 VPS ...
Page 64: ...Schematic Diagrams 11 16 Samsung Electronics 11 11 Remote Control ...