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Image signals are input, but images are not output properly.
Narrow down possible faulty point by using the
self diagnosis program (dial all). Refer to "Self-
diagnosis and Error Message" for the diagnosis
command.
No
Result of diagnosis
Is an error message output?
Yes
(1) No image appears.
(2) An image appears, but the color is poor.
Display method of test pattern
1) Press the PATTERN button.
2) Press the cursor button and then
the type of the necessary pattern.
1) There is an error in IC7 or 13
of CSP2 P.C.B., in the
Replace faulty parts according
memory IC connected to this
to the error message or replace
IC or in the periphery parts
the P.C.B. where an error has
such as the oscillator IC.
occurred.
2) There is an error in IC974 of
Refer to "Self diagnosis and
FMT P.C.B. or in the
Error Message".
periphery parts connected to
this IC.
Yes
Is "No Signal" displayed?
No
(3) The image flashes.
(4) An image appears, but it is
unidentifiable.
Have the test pattern displayed.
Refer to "Self diagnosis and Error Message".
No
Did the test pattern
appear?
Yes
No
VIDEO/S VIDEO input?
Yes
Apply a signal by changing from VIDEO/S VIDEO
to INPUT A, B or D4 input.
No
Does an image appear?
Yes
On CSP2 P.C.B.
On ADP P.C.B.
1) Signal is not output properly
IC1, IC4 or peripheral part
connected to either IC is faulty,
from IC705 or the signal
or the input stage of IC7 or its
input/output terminal of
IC709 is faulty.
peripheral part has failed.
2: CB701 has failed.
No
DVI input?
Yes
<Test pattern check>
• This check determines roughly whether an error is in the IC7
(AMDP2) input stage of CSP2 P.C.B. or in the later stage by
having the test pattern displayed properly.
• The test pattern can be selected by using the PATTERN
button, PATT button on the remote controller or from the menu
items. Also, it is possible to have it displayed by inputting a
command through the PC. It is output through IC7 (AMDP2) of
CSP2 P.C.B.
No
DVI input?
Yes
On ADP P.C.B.
1) Component input
There is an error in parts between INPUT SELECT of IC937,
938, 939 and the output buffer of IC924, 925, 926.
2) PC input
There is an error in the parts between INPUT SELECT of
IC937, 938, 939 and IC906, 907, 908, 909 through the
selector of IC945 and 8bit A/D.
3) There is an error in IC900 (APLD), IC35 of CSP2 P.C.B. or
parts related to the control line.
On CSP2 P.C.B.
1) Poor contact of the CB1 connector
2) There is an error in IC1, IC4 or its peripheral parts, or in the
IC7 input stage or its peripheral parts.
No
VIDEO/S VIDEO input?
Yes
On ADP P.C.B.
1) The error is located between the VIDEO input
terminal and IC706 or between IC706 signal
output and IC705.
2) IC709 has failed.
INPUT A, B, D4 input
On ADP P.C.B.
1) IC900, 958, 961 or 957 has failed.
2) In the case of SOG input, IC937, 938, 939
or its peripheral part has failed.
3) In the case of H/V, CS, there is an error in
On CSP2 P.C.B.
IC949, 950, 951 or in parts between IC949,
1) There is an error in IC22, 19
950 and IC958, 961.
or 20 and its periphery parts
4) In the case of the control system, there is an
2) There is an error in IC35 and
error in IC35 of CSP2 P.C.B.or in parts
its periphery parts.
related to the control line.
DPX-1000
43
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