4-55
PCS-1500/1500P
m
.
When entirely no pictures are outputted from the video system block, the
+
10 V power supply may be
defective.
IC904 and its peripheral supply the
+
10 V power. Confirm that the
+
10 V power is supplied to the
devices following the circuit diagram.
.
The iicwrite and iicread commands can be used when the diagnostics of the video block ends in fail and
is stopped, or when ends with ALL TEST PASS.
V-2
YES
V-3
YES
YES
NO
NO
NO
YES
NO
#diag
[|]
iicwrite
[|]
88
[|]
1D
[|]
00
↓
#diag
[|]
iicread
[|]
88
[|]
1D
↓
IIC Data = 00
#diag
[|]
iicwrite
[|]
88
[|]
1D
[|]
FF
↓
#diag
[|]
iicread
[|]
88
[|]
1D
↓
IIC Data = FF
Video encoder
color bar is OK?
The GOA test pattern
is OK?
Either AUX or
MONITOR is outputted
at least?
I
2
C control is
effective for the video
decoder?
(
*
1)
IC402 and its peripheral
IC353, X350, IC402 or
their peripheral
IC352, X350, IC402 or
their peripheral
MONITOR is not output
→
IC403, Q400, Q401, Q402, Q403 or
their peripheral
AUX is not outputted
→
IC404, Q404, Q405 or their peripheral
This test can be performed only when
the power of video block is turned on
and reset is released.
(
*
2) Enter the following commands and
confirm that the same data is
returned.
(
*
1) The waveform pictures of the Video Encoder (IC402)
up to the output terminal under this condition,
are shown at the end of this section.
4-2. Self-diagnostics Function
Summary of Contents for PCS-1500
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