PDP-507CMX
99
5678
56
7
8
C
D
F
A
B
E
Is the TCP control signal normal?
(See the oscilloscope photos.)
No
NG
NG
Yes Yes
No
Are the FFC cables properly
connected?
Replace the DIGITAL Assy.
Properly connect the FFC cables.
The abnormality is associated with
one address or one TCP?
Diagnose the ADDRESS Assy.
In most cases of damage on one line,
the panel chassis must be replaced.
If the FFC cable that connects the DIGITAL and ADDRESS Assys is in failure,
the abnormality is associated with one address in most cases.
Care must be taken that no dirt or dust is attached or gets in.
(the SCAN IC may be damaged.)
Replace the panel chassis.
No
NG
Yes
Yes
Yes
Yes
NG
No
Is the cable connected properly
to the 15-pin connector?
No
Connect the cable properly.
Connect the cable properly.
Is the waveform of the SCAN IC
control signal from the Y DRIVE
Assy normal?
No
Replace the Y DRIVE Assy.
The abnormality is associated
with a single scan line.
Diagnose the SCAN A and B Assys.
Replace the SCAN Assy
Failure analysis for the
drive system ⇒
DR3
Failure analysis for the
drive system ⇒
DR4
Is the waveform normal when the
voltage is applied to the panel?
Is the cable connected properly
to the 90-pin connecter ?
To Next Page
Loading...
Need help?
General