Sharp XG-C330X Service Manual ▷ View online
XG-C330X/C430X
5 – 5
RGB and component signal
check
check
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.
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.
Are picture signals sent to
TL2502, TL2503, and
TL2504?
TL2502, TL2503, and
TL2504?
NO
Check IC2403 and peripheral cir-
cuits .
cuits .
YES
Is 3.3V applied to TL1702?
NO
Check IC1703 and peripheral cir-
cuits.
cuits.
YES
Is 3.3V applied to TL1703?
NO
Check IC1708 and peripheral cir-
cuits.
cuits.
YES
Check IC2505 and peripheral
circuits.
circuits.
XG-C330X/C430X
5 – 6
S-VIDEO (INPUT 3)
check
check
VIDEO (INPUT 4)
check
check
Send S-Video signal
(color signal) from
INPUT 3. Select INPUT
3 using keys on the
main unit or the remote
control.
(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.
INPUT 4. Use buttons
on the main unit or the
remote control to select
INPUT 4.
Is image displayed in
black and white?
black and white?
YES
Check S-VIDEO ter-
minal and pin(43) of
IC3103.
minal and pin(43) of
IC3103.
Is VIDEO signal sent to
C3137?
C3137?
NO
Check VIDEO termi-
nal and peripheral cir-
cuits of Q3104 and
Q3107.
nal and peripheral cir-
cuits of Q3104 and
Q3107.
NO
YES
Is S-VIDEO signal (Y)
sent to C3139?
sent to C3139?
NO
Check S-VIDEO ter-
minal and peripheral
circuits of IC3103.
minal and peripheral
circuits of IC3103.
Is 5 V applied to
TL1701?
TL1701?
NO
Check IC1701 and
peripheral circuits.
peripheral circuits.
YES
YES
Is 5 V applied to
TL1701?
TL1701?
NO
Check IC1701 and
peripheral circuits.
peripheral circuits.
Check IC3103 and
peripheral circuits.
peripheral circuits.
YES
Check IC3103 and
peripheral circuits.
peripheral circuits.
XG-C330X/C430X
5 – 7
Checking the LAN
LAN communication is disabled even
though connecting the control PC with a
LAN cable. The LINK LED (green) does not
light up.
though connecting the control PC with a
LAN cable. The LINK LED (green) does not
light up.
Are the connection of connecting cable and
the settings of IP address, sub-net address
and default gateway correct?
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 IC6708
(EEP ROM) as it may be defective.
settings are unknown, contact the network administrator.
If the network settings cannot be saved, replace IC6708
(EEP ROM) as it may be defective.
YES
Note: When IC6708 (EEP ROM) is replaced, the MAC
address returns to default. Refer to "Resetting after replac-
ing IC6708 (EEP ROM)" to reset.
address returns to default. Refer to "Resetting after replac-
ing IC6708 (EEP ROM)" to reset.
Are the network device (e.g. Hub) between
the control PC and XG-C430X and cable
normal?
the control PC and XG-C430X 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?
pins (30) and (31) of IC8201 (PHY receiver)
receive signals?
NO
Check the peripheral circuit of J8201 (RJ-45 jack with built-
in transformer).
in transformer).
YES
Check the PHY receiver IC8201 and the
peripheral circuits of the microprocessor
IC8001.
peripheral circuits of the microprocessor
IC8001.
XG-C330X/C430X
6 – 1
XG-C330X
Service Manual
CHAPTER 6.
BLOCK DIAGRAM/OVERALL WIRING DIAGRAM
[1] BLOCK DIAGRAM
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SYSTEM BLOCK DIAGRAM
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