Samsung OFFICESERV 7100 Service Manual page 130

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3.4.6.7 SIO Port Operation is Abnormal
The procedure for resolving the problem caused by the SIO port of the TEPRI2 board is as
follows:
Start
Signal is generated from
SMC1 TX PIN of TEPRI2
U12 H14?
Yes
U1(MAX3232) PIN14
TXO is generated?
Yes
Check connection up to RJ-45.
End
3-36
- Check MMC.
- Check S/W version.
No
- Check if other functions operate
properly.
- Replace CPU(U12).
No
Replace U1.
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