16
CIRCUIT OPERATION
1. VIDEO PART
1-1) EE MODE
Video Signal which is output from monitor is input into pin 36 of IC301. It is amplified 6dB by AGC, then it is output
to pin 29 of IC301. The output signal is output to monitor through PJ301..
1-2) REC MODE
Video signal inputted from monitor will be recorded on the tape through head after FM modulated in IC.
1-3) PB MODE
FM signal pick uped through drum head from tape output to the pin 29 of IC301 as composite video signal after
60dB amplified and demodulation, then output to monitor through u-com OSD.
V-IN
V-OUT
REC
PB
AV SW JACK
Multiplexer
part
Servo Syscon
u-com OSD
MONITOR
PART
VIDEO
PART
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...