Trm Module - Samsung OFFICESERV 7100 Service Manual

3.4.3 4TRM Module

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