Troubleshooting, Black BoxLB1350A/LB1351A, No power, Thru S4

Black Box®LB1350A/LB1351A

If the register bit is a 1, the priority is high and if 0, the priority is low.

Thus the DSCP value classifies the packet service level.

When more than one scheme is enabled, priority conflicts are resolved by the following order : 802.1p based priority overrides port based priority and TOS based priority overrides 802.1p based priority

15- TROUBLESHOOTING

Problem	Indication	Corrective Action

No power	Power LED not	Check that the power supply cable is firmly
	lit	connected to the device		and the wall
		power socket.
		Check that the AC input power source is
		between 100 and 240VAC.
Network problems	No	On the “mode setup switches”, check that
	communication	S9 is in the UP position. ( converter normal
	on network	operation mode )
		Reset the device using S9
Any problem related to port		Set device to TEST mode (S8 Down), reset
4 (3) or F/O port		device (S9).If problem not solved remain in
		TEST mode and perform troubleshooting.
TP link not working	Link LED not lit	On the “mode setup switch” move S9 to
		the DOWN position, and move it back to
		the UP position after one second.
		Check that the connected device is
		working properly at 100Mbps or 10Mbps.
		Check that the connection cable is well
		connected at both ends.
TP link not working at 100M	Both Link LED	On the “setup mode switches”, check that
when Black Box®LB1350A	and	respective switches	S1	thru S4	are in
LB1351A connected to	100BaseTX LED	down position ( Auto-Negotiation mode )
100Mbps or 10/100Mps	not lit
device
		Interchange between the suspected port
		and another port 1 thru 4
		Check that the connected device is
		working properly at 100Mbps.
		Check the interconnection between the
		Black Box®LB1350A LB1351A and the
		device.
		Use for suspected link the preferred port
		and force it to 100Mbps (S4 up, S5 down)
TP link not working at 10M	Link LED not lit	If suspected port	is 1	thru 3,	move
when the Black		respective switch (S1 thru S3)			to up
Box®LB1350A LB1351A		position , if port 4 – move S4 up and S5 up
connected to 10M device
(copper side).
		Reset the device using S9
		Check that the connected device is
		working properly at 10Mbps

15- TROUBLESHOOTING

No power

Check that the power supply cable is firmly

connected to the device

and the wall

power socket.

Check that the AC input power source is

between 100 and 240VAC.

Network problems

On the “mode setup switches”, check that

communication

S9 is in the UP position. ( converter normal

on network

Reset the device using S9

Any problem related to port

Set device to TEST mode (S8 Down), reset

4 (3) or F/O port

device (S9).If problem not solved remain in

TEST mode and perform troubleshooting.

TP link not working

Link LED not lit

On the “mode setup switch” move S9 to

the DOWN position, and move it back to

the UP position after one second.

Check that the connected device is

working properly at 100Mbps or 10Mbps.

Check that the connection cable is well

connected at both ends.

TP link not working at 100M

On the “setup mode switches”, check that

when Black Box®LB1350A

respective switches

thru S4

are in

LB1351A connected to

down position ( Auto-Negotiation mode )

100Mbps or 10/100Mps

not lit

device

Interchange between the suspected port

and another port 1 thru 4

working properly at 100Mbps.

Check the interconnection between the

Black Box®LB1350A LB1351A and the

Use for suspected link the preferred port

and force it to 100Mbps (S4 up, S5 down)

TP link not working at 10M

If suspected port

thru 3,

move

when the Black

respective switch (S1 thru S3)

to up

Box®LB1350A LB1351A

position , if port 4 – move S4 up and S5 up

connected to 10M device

(copper side).

working properly at 10Mbps