50
KRP-500P
1
2 3 4
A
B
C
D
E
F
1
2 3 4
Is the waveform normal when the
voltage is applied to the panel?
(See the oscilloscope photos.)
No
Is the output value of each voltage
from the X DRIVE Assy appropriate?
Another Assy may
be in failure.
Ye s
Replace the X DRIVE Assy.
Replace the DIGITAL Assy.
NG
No
Ye s
No
Is the input signal normal?
(See the oscilloscope photos.)
Replace the FFC cables.
* Waveform such as the
signal is OK for an
LVDS signal.
No
Are all the connectors properly
connected?
Reconnect the connectors.
B
D
Ye s
X DRIVE Assy
No
Are all the connectors properly
connected?
Reconnect the connectors.
No
C
No
Ye s
Is the TCP control signal normal?
(See the oscilloscope photos.)
Ye s
ADDRESS Assy
Replace the panel chassis.
Replace the DIGITAL Assy.
Ye s No
NG
Replace the FFC cables.
Is the input signal normal?
(See the oscilloscope photos.)
• Compare the measurement value at the last output stage of each
voltage against the value calculated using the measurement value
of the DAC output voltage. (See the table below.)
• There may be a case where the setting of a Adjustable resistor on
the Assy is out of range.
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