Sharp PG-C45X (serv.man11) Service Manual ▷ View online
33
PG-C45X
TROUBLE SHOOTING TABLE (Continued)
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Checking the S-video system
Is the lamp on ?
Is specified voltage EA
connectors?
connectors?
Is the video signal inputted into the
pins (19) and (21) of P3102?
pins (19) and (21) of P3102?
Is the Y-signal outputted from the
pin (7) of IC4502?
pin (7) of IC4502?
Is the C-signal outputted from the
emitter of Q4513?
emitter of Q4513?
Is the signal inputted into pins(72)
and (73) of P8002?
and (73) of P8002?
Go to "Checking the PC I/F unit".
Go to "Lamp fails to light-up".
Check power circuit and its parts.
Check the video terminal and its
peripheral circuits.
peripheral circuits.
Check IC4502 and its peripheral
circuits.
circuits.
Check Q4513 and its peripheral
circuits.
circuits.
Check Q4502 and its peripheral
circuits.
circuits.
34
PG-C45X
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
pins(26), (28) and (30) of P3102?
pins(26), (28) and (30) of P3102?
Are their signals inputted into
pins(1), (5) and (25)?
pins(1), (5) and (25)?
Are their signals inputted into
pins(54), (58) and (62)?
pins(54), (58) and (62)?
Are their signals outputted from
pin(45)-(54), pins(57)-(66) and
pins(69)-(78) of P8001?
pin(45)-(54), pins(57)-(66) and
pins(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 signals inputted into
SC1101, SC1201 and SC1301?
SC1101, SC1201 and 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 IC3101 and its peripheral
circuits.
circuits.
Check SC3102, P3102 and
their peripheral circuits.
their peripheral circuits.
Check Q2419, Q2420 and their
peripheral circuits.
peripheral circuits.
Check IC2401, Q2401, Q2402 and
Q2404 and their peripheral circuits.
Q2404 and their peripheral circuits.
Go to "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
PG-C45X
TROUBLE SHOOTING TABLE (Continued)
No
No
No
Yes
Yes
Yes
Checking the RGB Sync.
Are the sync inputted into pins(2)
and (4) of SC3102?
and (4) of SC3102?
Are their signal inputted into pins(2)
and (12) of IC2404?
and (12) of IC2404?
Are their signal inputted into
pins(63) and (66) of P8002?
pins(63) and (66) of P8002?
Go to "Checking the PC I/F unit".
Check IC3152, IC3153, IC3154,
IC3151 and their peripheral circuits.
IC3151 and their peripheral circuits.
Check P3102 and its peripheral
circuits.
circuits.
Check IC2404 and its peripheral
circuits.
circuits.
36
PG-C45X
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
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