Sharp XV-Z200U/E Service Manual page 36

XV-Z200U/E, XV-Z201E
DT-300
» Formatter Unit Troubleshooting
Screen with spectral
colors
Color production of R,
G and B is not correct.
Adjustment by "Process
Menu" →"DLP" →
"INDEX". The failure state
remains unchanged.
Yes
Is the flexible cable of
SC9001 connected
correctly?
Yes
IC2002 is faulty.
Do the colors return to
correct colors when the
process menu is
entered?
Yes
Poor adjustment should
be a likely cause.
Perform readjustment
according to the
adjustment method.
IC9401 or its peripheral
circuits are faulty.
Check the color wheel
sensor unit.
IC9301 or its peripheral
circuits are faulty.
Display in trouble
Black screen
Are the sockets P9101
and SC9001 connected
correctly?
Yes
Does the color wheel
turn?
No
No
Does P9402 have the
correct motor drive
voltage waveform?
Yes
Color wheel is faulty.
Is the lamp lit on?
Yes
No
Does pin (2) of P9102
have 150Hz pulse signal
in no-signal state?
Yes
Does pin (9) of IC9301
No
have the correct voltage
(+23~+26V)?
Yes
No
Does pin (13) of IC9301
have the correct voltage
(-26V)?
Yes
Does pin (49) of IC9301
No
have the correct voltage
(+7V)?
Yes
Double-check DMD and
cLGA units.
Miscellaneous
Is the socket SC9001
connected correctly?
Yes
Does the pin (3) of
Yes
IC9201 have the correct
voltage +1.8V?
Yes
Are the signals fed to the
terminating resistance
(39W) of RDRAM
(IC9203)?(DQA8 and
DQB8 are unused.)
Yes
Is the waveform at pins
(18) and (20) of IC9202
the 400MHz sine wave?
Yes
IC9203, IC9101 or their
peripheral circuits are
faulty.
No
Does pin (1) of the main
PWB P2002 have 5V or
300Hz pulse wave?
Yes
Is the correct voltage is
supplied to the
connector CN1001?
Yes
Is the fan rotating?
Yes
IC2007, IC2002 or their
peripheral circuits are
faulty.
36
Equally spaced white or
black vertical stripes
Black horizontal band
Are the contact terminals
of the DMD, formatter
PWB and cLGA dirty?
Re-assemble the DMD,
the optical mechanism
and the formatter unit.
No
IC9202, IC9101, X9101
or their peripheral
circuits are faulty.
No
Is the connector of
P2002 connected
No
Check the ballast unit
and the power unit.
No
Check the fan circuit.