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3.4.7.2 When the Power Is Not Supplied
The method to solve the problem when the power is not supplied to the 8COMBO port is
as follows:
Yes
No
Check if -34 V or more is
supplied to PIN7 of RELAY.
Yes
No
End
Check or repair the POWER control
port of SBS9401.
Check or repair -48 V from the 30PIN
connector.
Check the voltage of both ends
of TIP-RING.(-30 V or more)
Is the voltage -34 V or more?
Replace PZTA42.
PIN of LD0-15 is HIGH?
Содержание OFFICESERV 7100
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