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XG-MB67X

8 – 9

Send component signal or 
RGB signal of 1080i (or 720P) 
from INPUT 1 or INPUT 2. 
Select INPUT 1 or INPUT 2 
using keys on the main unit or 
the remote control.

YES

Is image displayed normally?

YES

End

NO

Are picture signals sent to 
TL3201, TL3204, and 
TL3205?

NO

Check IC3002 and the peripheral 
circuits (check IC3052 for INPUT 
2).

YES

Is 3.3V applied to TL1792?

NO

Check IC1792 and peripheral cir-
cuits.

YES

Is 3.3V applied to TL1762?

NO

Check IC1763 and peripheral cir-
cuits.

YES

Check IC3201 and peripheral 
circuits.

XG-MB67X

8 – 10

Send S-Video signal 
(color signal) from 
INPUT 3. Select INPUT 
3 using keys on the 
main unit or the remote 
control.

Send VIDEO signal from 
INPUT 4. Use buttons 
on the main unit or the 
remote control to select 
INPUT 4.

Is image displayed nor-
mally?

YES

End

Is image displayed nor-
mally?

YES

End

NO

NO

Is image displayed in 
black and white?

YES

Check S-VIDEO ter-
minal and peripheral 
circuits of Q3311.

Is VIDEO signal sent to 
C3326?

NO

Check VIDEO termi-
nal and peripheral cir-
cuits of Q3321.

NO

YES

Is S-VIDEO signal (Y) 
sent to R3306?

NO

Check S-VIDEO ter-
minal and peripheral 
circuits of Q3301.

Is 1.8 V applied to 
TL3358?

NO

Check IC3352  and 
peripheral circuits.

YES

YES

Is 1.8 V applied to 
TL3358?

NO

Check IC3352 and 
peripheral circuits.

Is 3.3 V applied to 
TL1792?

NO

Check IC1792 and 
peripheral circuits.

YES

YES

Is 3.3 V applied to 
TL1792?

NO

Check IC1792 and 
peripheral circuits.

Is 1.5 V applied to 
TL1762?

NO

Check IC1763 and 
peripheral circuits.

YES

YES

Is 1.5 V applied to 
TL1762?

NO

Check IC1763 and 
peripheral circuits.

Check IC3351 and 
peripheral circuits.

YES

Check IC3351 and 
peripheral circuits.

XG-MB67X

8 – 11

LAN communication is disabled even 
though connecting the control PC with a 
LAN cable. The LINK LED (green) does not 
light up.

YES

Are the connection of connecting cable and 
the settings of IP address, sub-net address 
and default gateway correct?

NO

Check the connecting cable and LAN settings. If the LAN 
settings are unknown, contact the network administrator. 
If the network settings cannot be saved, replace IC8003 
(EEP ROM) as it may be defective.

YES

Note: When IC8003 (EEP ROM) is replaced, the MAC 
address returns to default. Refer to "Resetting after replac-
ing IC8003 (EEP ROM)" to reset.

Are the network device (e.g. Hub) between 
the control PC and XG-MB67X and cable 
normal?

NO

Repair defective parts in the network.

YES

When data is sent from the control PC, do 
pins (30) and (31) of IC8201 (PHY receiver) 
receive signals?

NO

Check the peripheral circuit of J8201 (RJ-45 jack with built-
in transformer).

YES

Check the PHY receiver IC8201 and the 
peripheral circuits of the microprocessor 
IC8001.

XG-MB67X

8 – 11

LAN communication is disabled even 
though connecting the control PC with a 
LAN cable. The LINK LED (green) does not 
light up.

YES

Are the connection of connecting cable and 
the settings of IP address, sub-net address 
and default gateway correct?

NO

Check the connecting cable and LAN settings. If the LAN 
settings are unknown, contact the network administrator. 
If the network settings cannot be saved, replace IC8003 
(EEP ROM) as it may be defective.

YES

Note: When IC8003 (EEP ROM) is replaced, the MAC 
address returns to default. Refer to "Resetting after replac-
ing IC8003 (EEP ROM)" to reset.

Are the network device (e.g. Hub) between 
the control PC and XG-MB67X and cable 
normal?

NO

Repair defective parts in the network.

YES

When data is sent from the control PC, do 
pins (30) and (31) of IC8201 (PHY receiver) 
receive signals?

NO

Check the peripheral circuit of J8201 (RJ-45 jack with built-
in transformer).

YES

Check the PHY receiver IC8201 and the 
peripheral circuits of the microprocessor 
IC8001.