43
TROUBLESHOOTING FLOW CHART
3. AUDIO CIRCUIT
A. TROUBLESHOOTING OF PB MODE
YES
Check monitor PART
No sound in the
playback mode.
NO
NO
YES
Is signal input pin 5 of IC 301?
Is AUDIO ON key set to ON?
Check PJ 201
&
Check C223, C203.
Set AUDIO ON key to ON.
YES
NO
Is signal output
pin 96 of IC 301?
Check IC 301 adjacent circuit.
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...
