F301 is open.
XP301 is open.
XP302 is open.
Power cord isn't inserted firmly
or power cord is open.
START
Normal
Is C328 AC 220V?
Is C301 DC 310V?
Is XP303 normal?
Checkiftransformeris damaged.
Checksecondary commutecircuit.
Check secondaryfeedback circuit.
Check if secondary short.
Check V304.
Replace N301.
Are transformer secondary
6V, 15V output?
Are2,3pinofN301resistance
highimpedance?
Check regulatedcircuit.
Check N302 andperipheral
components.
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
A
Power Circuit abnormal
Check commute circuit.
Check L301 andL302.
6
Содержание DS-2000N
Страница 13: ...C Open close abnormal 8 ...
Страница 21: ...4 WAVEFORMS ON VIDEO CIRCUIT 16 ...
Страница 22: ...17 ...
Страница 23: ...18 ...
Страница 24: ...19 ...
Страница 25: ...20 ...
Страница 26: ...21 ...
Страница 35: ...7 CIRCUIT DIAGRAM 30 ...
Страница 39: ...8 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 34 ...
Страница 40: ...35 ...
Страница 41: ...36 ...
Страница 42: ...37 ...
Страница 43: ...38 ...
Страница 44: ...39 ...