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3.
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3.3.1.3 PLL Operation is Abnormal
The procedure for resolving the problem caused by Phase Locking Loop(PLL) operation is
as follows:
If PLL fails, a call can be connected but there is noise while calling.
Is DUTY of FOI signal steady?
No
Yes
Is REFERENCE
clock selection MMC selected?
No
Yes
Is the REFERENCE
clock normal?
No
Yes
Is 2 kHz norma?
No
Yes
Start
Check if the corresponding channel
signal of highway TX is generated.
Set the REFERENCE clock.
Check the REFERENCE clock of
TEPRI board, main board and
MP10/11 board.
- If REFERENCE clock sometimes
shakes, TEPRI line is abnormal.
- If REFERENCE clock does not
shake, repair the VCO circuit.
MP10/11: Composed of U23, U24,
and Y1.
- MP10/11: Check PINT2 of U22.
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 ...