Read Sharp PG-M20X (serv.man10) Service Manual online
27
PG-M20X
No
Lamp Does Not Light Up.
Yes
Is an appropriate voltage supplied
to SC9002?
to SC9002?
No
Is there the 180-Hz pulse signal at
pin (1) of P9002?
pin (1) of P9002?
Is any of SC9001, SC9002, P9002
and P9003 connectors
disconnected or in poor contact?
and P9003 connectors
disconnected or in poor contact?
Yes
Insert the connectors completely.
No
Go to "Checking of Input PWB"
Go to "Checking of Input PWB"
Go to "Checking of PC I/F unit"
Yes
Go to "Checking of Lamp" and
"Checking of Ballast"
"Checking of Ballast"
Yes
Is the color wheel rotating?
No
Go to "Color Wheel Does Not
Rotate."
Rotate."
Yes
Is the signal at pin (10) of IC9101
at High level?
at High level?
No
Are the signals at pins (69) and
(70) at High level?
(70) at High level?
Yes
No
Yes
Is the signal at pin (9) of IC9101
at High level?
at High level?
No
Trouble with IC9003
Trouble with 1C9101 or its
peripheral part.
peripheral part.
Yes
Is there the 180-Hz pulse signal at
pin (2) of P9003 when no input
signal is given?
pin (2) of P9003 when no input
signal is given?
No
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