Sharp XG-C50XE (serv.man11) Service Manual ▷ View online
34
XG-C50X
TROUBLE SHOOTING TABLE (Continued)
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Checking the RGB signal.
Are the RGB signals outputted from
pin(16), (18) and (20) of IC3101?
pin(16), (18) and (20) of IC3101?
Are their signals outputted from
pin(26), (28) and (30) of P3102?
pin(26), (28) and (30) of P3102?
Are their signals inputted into
pin(1), (5) and (25)?
pin(1), (5) and (25)?
Are their signals inputted into
pin(54), (58) and (62)?
pin(54), (58) and (62)?
Are their signals outputted from
pin(45)-(54), pin(57)-(66) and
pin(69)-(78) of P8001?
pin(45)-(54), pin(57)-(66) and
pin(69)-(78) of P8001?
Are their signals inputted into
IC1101, IC1102, IC1201, IC1202,
IC1301 and IC1302?
IC1101, IC1102, IC1201, IC1202,
IC1301 and IC1302?
Are their sgnals inputted into
SC1101, SC1201, SC1301?
SC1101, SC1201, SC1301?
Yes
Check the connection of LCD
panels
panels
And when video signal and OSD
are also not displaied, replace the
LCD panels.
are also not displaied, replace the
LCD panels.
Check IC 3101 and its peripheral
circuits.
circuits.
Check SC3102 and P3102 and
their peripheral circuits.
their peripheral circuits.
Check Q2419 and Q2420 and their
peripheral circuits.
peripheral circuits.
Check IC2401,Q2401 Q2402 and
Q2404 and their peripheral circuits.
Q2404 and their peripheral circuits.
Goto "Checking the PC I/F unit".
Check IC1101,IC1102,IC1201,
IC1202,IC1301 and IC1302 and
their peripheral circuits.
IC1202,IC1301 and IC1302 and
their peripheral circuits.
35
XG-C50X
TROUBLE SHOOTING TABLE (Continued)
No
No
No
Yes
Yes
Yes
Checking the RGB Sync.
Are the sync inputted into pin(2)
and (4) of SC3102?
and (4) of SC3102?
Are their signal inputted into pin(2)
and (12) of IC2404?
and (12) of IC2404?
Are their signal inputted into
pin(63) and (66) of P8002?
pin(63) and (66) of P8002?
Go to "Checking the PC I/F unit".
Check IC3152, IC3153, IC3154 and
IC3151and their peripheral circuits.
IC3151and their peripheral circuits.
Check P3102 and its peripheral
circuits.
circuits.
Check IC2404 and its peripheral
circuits.
circuits.
36
XG-C50X
TROUBLE SHOOTING TABLE for PC I/F UNIT
Checking of PC I/F UNIT
Check the video input.
Check the component input.
Check the RGB input.
Is the user menu displayed
onscreen?
onscreen?
End
Check the onscreen display.
Yes
Yes
Yes
Yes
Yes
0
37
XG-C50X
TROUBLE SHOOTING TABLE for PC I/F UNIT (Continued)
Is the STEP signal as specified?
Select the STEP signal.
Is the onscreen display color
normal?
normal?
No problem with the onscreen
display.
display.
In the process mode, make the
LCD line adjustment.
LCD line adjustment.
Is the user menu displayed
onscreen normally by the MENU
key?
onscreen normally by the MENU
key?
Is the signal compatible with the
STEP signal outputted at TL106
thru TL111?
STEP signal outputted at TL106
thru TL111?
Enter the process menu and select
PATTERN. Then select the COLOR
pattern.
PATTERN. Then select the COLOR
pattern.
No
Yes
No
Yes
Go to "Checking of GA4 and Its
Periphery".
Periphery".
Yes
Rewrite the onscreen display data.
No
Checking of Onscreen Display
0
Rewrite the onscreen display data.
Yes
IC8025 is defective.
No
0
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