OfficeServ 7100 Service Manual
© SAMSUNG Electronics Co., Ltd.
3-29
3.4.5.4 C.O. line Call cannot be Connected
The procedure for resolving the problem that occurs when C.O. line call cannot be connected
is as follows:
No
Check the signals of HWR
(PIN6 of CODEC) and BCLKX
(PIN9,10 of CODEC)
No
Is TX signal generated?
Check the P3 signal
of the CODEC.
Yes
Check the abnormal part by
tracking up to C.O connector.
Yes
No
Check the signals of HWX
(PIN11 of CODEC) and BCLKX
(PIN9,10 of CODEC).
No
Is the RX signal detected?
Check the PIN 14 of the CODEC.
Yes
Check the abnormal part by
tracking up to C.O connector.
Yes
No
Is PIN3(TX) abnormal?
Check TX and RX signals on
PIN3 and PIN14 of
corresponding CODEC.
Yes
Check PIN9/10(BCLKX),
PIN5/12(FS), PIN6(HWR), and
PIN11(HWX) of CODEC.
Yes
Yes
Is PIN14(RX) abnormal?
Check PIN9/10(BCLKX),
PIN5/12(FS), PIN6(HWR), and
PIN11(HWX) of CODEC.
No
End
End
╋
╋
No
Start
Check if TX is abnormal
while RX is normal?
Check if TX and RX
are abnormal?
Check if TX is normal while
RX is abnormal?
Содержание OFFICESERV 7100
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