OfficeServ 7100 Service Manual
© SAMSUNG Electronics Co., Ltd.
3-27
3.4.5.2 C.O. line Call cannot be Originated
The procedure for resolving the problem that occurs when C.O. line call cannot be
originated is as follows:
Yes
Yes
Yes
No
Check the power after disconnecting
the C.O. line from the board.
No
Yes
Yes
Check if RELAY control
signal is normal.
No
No
No
Check if the absolute power
between TIP-RINGs exceeds 30 V
in the hook-on status.
Replace C.O. line loop HYBRID.
Replace RELAY.
Repair the C.O. line.
Replace TMC
(LINE1~4: U5, LINE 5~8: U6)
Replace TMC
(LINE1~4: U5, LINE 5~8: U6)
Is the power normal?
When the C.O. line is occupied,
check if RELAY operates by sound.
RELAY operation is normal?
HOS is HIGH?
Power between TIP-
RINGs exceeds 30 V?
Check RELAY control signal.
HOS signal is HIGH?
Summary of Contents for OFFICESERV 7100
Page 1: ...Ed 00 OfficeServ 7100 Service Manual ...
Page 33: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 1 15 ...
Page 189: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 3 Soldering Side ...
Page 195: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 9 5 7 TEPRI2 Board Part Side ...
Page 197: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 11 5 8 8COMBO Part Side ...
Page 199: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 13 5 9 16DLI2 Part Side ...
Page 201: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 15 5 10 MGI16 MGI32 Part Side ...
Page 203: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 17 5 11 16SLI2 16MWSLI Part Side ...
Page 205: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 19 5 12 8TRK Board Part Side ...
Page 207: ...OfficeServ 7100 Service Manual SAMSUNG Electronics Co Ltd 5 21 5 13 PLIM Board Part Side ...