13
ELECTRICAL ADJUSTMENT
1. SERVO/SYSCON CIRCUIT ADJUSTMENT METHOD
(1) VIDEO HEAD SWITCHING POSITION
Adjustment Part
Checking Point
Measuring Equipment
Mode
Test Tape
R595
TJ396P502 3PIN
Oscilloscope
Play
DN-1(Color Bar)
¥ Connection Method
¥ Adjustment Procedure
1) Play back the test tape.
2) Set the oscilloscope in the chop mode connect the CH1 to SW pulse(P502 3PIN), the CH2 to TJ396(video out) with
CH1 triggering.
3) Adjust R595 for the positive trigger until 6.5?0.5H cycle before the vertical SYNC pulse.
R595
P502
TJ396
CH-2
Oscilloscope
CH-1
CH2
CH1
Trigger Position
6.5H
0.5H
1H
0.5H
Vertical SYNC Signal
SW PULSE
(PT502
3PIN)
VIDEO OUT
(TJ396)
–
Summary of Contents for DQ-K2121N-P
Page 22: ...21 CIRCUIT OPERATION X RAY PROTECTION CIRCUIT DQ K2121N P...
Page 23: ...22 CIRCUIT INFORMATION 1 CONNECTION DIAGRAM DQ K2121N D P...
Page 24: ...23 CIRCUIT INFORMATION 2 POWER SCHEMATIC DIAGRAM DQ K2121N D P...
Page 25: ...24 CIRCUIT INFORMATION 3 RECODER A V SCHEMATIC DIAGRAM DQ K2121N D P...
Page 26: ...25 CIRCUIT INFORMATION 4 SERVO SYSCON SCHEMATIC DIAGRAM DQ K2121N D P...
Page 27: ...26 CIRCUIT INFORMATION 5 FBT CRT SCHEMATIC DIAGRAM DQ K2121N D P...
Page 28: ...27 CIRCUIT INFORMATION 6 LOGIC SCHEMATIC DIAGRAM DQ K2121N D P...
Page 29: ...28 CIRCUIT INFORMATION 7 JACK AUDIO SW SCHEMATIC DIAGRAM DQ K2121N D P...
Page 30: ...29 CIRCUIT INFORMATION 8 MULTIPLEXER SCHEMATIC DIAGRAM DQ K2121N D P...
Page 31: ...30 CIRCUIT INFORMATION 9 MONITOR A V SCHEMATIC DIAGRAM DQ K2121N D P...
Page 55: ...54 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW...
Page 56: ...55 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW...
Page 57: ...56 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW...
Page 58: ...57 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW...
Page 59: ...58 DISASSEMBLY...
Page 78: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp...
