Sharp XV-Z2000E (serv.man12) Service Manual ▷ View online
38
XV-Z2000
DT-400
DT-400
Checking the lamp light-up
Does each cooling fan
function?
function?
Check the power supply circuit
or fan circuit on the main circuit.
or fan circuit on the main circuit.
Is the rotating sound of the
color wheel heard?
color wheel heard?
Check Q9401 to Q9403,
IC9401(motor driver IC)
and their peripheral ciruits.
IC9401(motor driver IC)
and their peripheral ciruits.
Go to "Checking the
peripheral circuits of
the formatter".
peripheral circuits of
the formatter".
Replace the color wheel.
Is the discharging sound
heard?
heard?
Is the lamp tight in the
socket?
socket?
Replace the lamp.
Securely insert the
connectors.
connectors.
Is DC voltage of approx.
370V applied to both ends
of the ballast power supply?
370V applied to both ends
of the ballast power supply?
Is pin (2) of P1707 at the
"H" level?
"H" level?
Go to "Checking the
power unit".
power unit".
Go to "Checking the
peripheral circuits of the
formatter".
peripheral circuits of the
formatter".
Check Q8002, Q8006 and
their peripheral circuits.
their peripheral circuits.
NO
YES
NO
ABNORMAL
YES
NORMAL
YES
NO
YES
NO
NO
YES
YES
NO
39
XV-Z2000
DT-400
DT-400
Adjustment by "Process
Menu"
Menu"
→
"DLP"
→
"INDEX". The failure state
remains unchanged.
remains unchanged.
Display in trouble
Screen with spectral
colors
Color production of R,
G and B is not correct.
colors
Color production of R,
G and B is not correct.
Black screen
Are the sockets SC2001
and SC9001 connected
correctly?
and SC9001 connected
correctly?
Are the socket SC2001
and SC9001 connected
correctly?
and SC9001 connected
correctly?
Are the contact terminals
of the DMD, formatter
PWB and cLGA dirty?
of the DMD, formatter
PWB and cLGA dirty?
Are the SC2001 and
SC9001 connected
correctly?
SC9001 connected
correctly?
Does the color wheel
turn?
turn?
Does P9402 have the
correct motor drive
voltage waveform?
correct motor drive
voltage waveform?
Is the waveform at pins
(18) and (20) of IC9202
the 400MHz sine wave?
(18) and (20) of IC9202
the 400MHz sine wave?
IC9202, IC9101, X9101
or their peripheral
circuits are faulty.
or their peripheral
circuits are faulty.
Does the pin (3) of
IC9201 have the correct
voltage +1.8V?
IC9201 have the correct
voltage +1.8V?
Are the signals fed to the
terminating resistance
(39W) of RDRAM
(IC9203)?(DQA8 and
DQB8 are unused.)
terminating resistance
(39W) of RDRAM
(IC9203)?(DQA8 and
DQB8 are unused.)
Re-assemble the DMD,
the optical mechanism
and the formatter unit.
the optical mechanism
and the formatter unit.
Do the colors return to
correct colors when the
process menu is
entered?
correct colors when the
process menu is
entered?
Poor adjustment should
be a likely cause.
Perform readjustment
according to the
adjustment method.
be a likely cause.
Perform readjustment
according to the
adjustment method.
Color wheel is faulty.
IC2002 is faulty.
IC9401 or its peripheral
circuits are faulty.
circuits are faulty.
Is the lamp lit on?
Check the color wheel
sensor unit.
sensor unit.
IC2001, IC2007 or their
peripheral circuits are
faulty.
peripheral circuits are
faulty.
Is the correct voltage is
supplied to the each
connector of power and
ballast unit?
supplied to the each
connector of power and
ballast unit?
Check the ballast unit
and the power unit.
and the power unit.
Does pin (2) of P2004
have 150Hz pulse signal
in no-signal state?
have 150Hz pulse signal
in no-signal state?
Does pin (9) of IC9301
have the correct voltage
(+23~+26V)?
have the correct voltage
(+23~+26V)?
Is pulse wave in voltage
at pin (14) of P1701?
at pin (14) of P1701?
IC9301 or its peripheral
circuits are faulty.
circuits are faulty.
Miscellaneous
Equally spaced white or
black vertical stripes
Black horizontal band
black vertical stripes
Black horizontal band
IC9203, IC9101 or their
peripheral circuits are
faulty.
peripheral circuits are
faulty.
IC2007, IC2002 or their
peripheral circuits are
faulty.
peripheral circuits are
faulty.
Does pin (13) of IC9301
have the correct voltage
(-26V)?
have the correct voltage
(-26V)?
Does pin (49) of IC9301
have the correct voltage
(+7V)?
have the correct voltage
(+7V)?
Is the fan rotating?
Check the fan circuit.
Double-check DMD and
cLGA units.
cLGA units.
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
»
Formatter Unit Troubleshooting
40
XV-Z2000
DT-400
DT-400
Input the digital signal from INPUT5.
Select digital with the keys on the main body or the
remote control.
Select digital with the keys on the main body or the
remote control.
Check the Formatter unit.
Is the picture disturbed?
Is picture outputted?
Is the signal coming to pins (10)-
(77) of IC502?
(77) of IC502?
YES
NO
Check between the input terminals
and IC502.
and IC502.
NO
NO
YES
YES
Is the signal coming to pins (26)-
(54) and (66)-(94) of SC2001?
(54) and (66)-(94) of SC2001?
Check IC8001 and its peripheral
circuits.
circuits.
NO
YES
Checking the digital input
End.
1
Input the analog RGB signal from INPUT5.
Select INPUT5 with the keys on the main body or the
remote control.
Select INPUT5 with the keys on the main body or the
remote control.
Check IC3102 and its peripheral
circuits.
circuits.
Are pins (76), (77) and (78) of
IC3102 outputting and the signals
inputted to pins (73), (74) and (75)?
IC3102 outputting and the signals
inputted to pins (73), (74) and (75)?
Is the picture disturbed?
Is picture outputted?
YES
NO
NO
YES
NO
Is the picture signal coming to
pins (3), (4) and (5) of IC3102?
pins (3), (4) and (5) of IC3102?
Check between the input terminals
and IC3102.
and IC3102.
NO
YES
YES
Checking the analog RGB input
End.
1
3
41
XV-Z2000
DT-400
DT-400
YES
NO
Check IC3102, IC3106 and
their peripheral circuits.
their peripheral circuits.
Check IC3104 and its
peripheral circuits.
peripheral circuits.
Check IC3102 and its
peripheral ciruit.
peripheral ciruit.
NO
NO
Check IC6004 and its
peripheral circuits.
peripheral circuits.
NO
Check IC8001 and its
peripheral circuits.
peripheral circuits.
NO
Checking the Component
Send component signals to
INPUT1 or INPUT2. Use keys
on the main unit or remote
control to select INPUT1 or
INPUT2.
INPUT1 or INPUT2. Use keys
on the main unit or remote
control to select INPUT1 or
INPUT2.
Is video signal inputted into
pins (3) to (5) of IC3102 at the
time of INPUT1 selection, and
is inputted into pins (15) to
(17), respectively at the time of
INPUT2 selection?
pins (3) to (5) of IC3102 at the
time of INPUT1 selection, and
is inputted into pins (15) to
(17), respectively at the time of
INPUT2 selection?
Are video signals inputted to
pins (1), (3) and (5) of
IC3104?
pins (1), (3) and (5) of
IC3104?
YES
Are video signals inputted to
pins (43), (48) and (54) of
IC6004?
pins (43), (48) and (54) of
IC6004?
YES
Are video signals outputted
from pins (2)-(9), (12)-(19)
and (70)-(77) of IC6004?
from pins (2)-(9), (12)-(19)
and (70)-(77) of IC6004?
YES
Is signal outputted to each
even number pin of pins (21)-
(54) and (66)-(94) of SC2001?
even number pin of pins (21)-
(54) and (66)-(94) of SC2001?
YES
Check Formatter unit again.
YES
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