OfficeServ 7100 Service Manual
© SAMSUNG Electronics Co., Ltd.
3-23
3.4.3 4TRM Module
3.4.3.1 Ring Detection is not Available
Check the line and replace 4TRM.
No
Yes
Replace the line and check the
pattern/part up to the port termial.
Yes
Yes
No
Yes
Start
Transistor(Q101)
Emitter is normal?
Inverter(U104) output is normal?
CPC5623 Pin 10 is normal?
Pin 13, 14 of
CPC5623 are normal?
Ring detection is
performed in the entire
port?
End
Replace the transistoer.
Replace the inverter.
Replace CPC5623.
No
Yes
No
No
Содержание OFFICESERV 7100
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