Pioneer PRO-141FD Service Manual page 53

5
Are all the connectors properly
connected?
Is the output value of each voltage
from the X DRIVE Assy appropriate?
D
Another Assy may
Is the waveform normal when the
be in failure.
voltage is applied to the panel?
(See the oscilloscope photos.)
Is the input signal normal?
(See the oscilloscope photos.)
Replace the FFC cables.
Replace the DIGITAL Assy.
Are all the connectors properly
connected?
Is the TCP control signal normal?
(See the oscilloscope photos.)
5
6
B
X DRIVE Assy
No
Reconnect the connectors.
Yes
No
• Compare the measurement value at the last output stage of each
Yes
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.
No
Yes
Replace the X DRIVE Assy.
No
NG
C
ADDRESS Assy
No
Yes
No
Yes
Replace the panel chassis.
PRO-141FD
6
7
Reconnect the connectors.
No
Is the input signal normal?
(See the oscilloscope photos.)
Yes No
Replace the FFC cables.
NG
* Waveform such as the
signal is OK for an
LVDS signal.
Replace the DIGITAL Assy.
7
8
A
B
C
D
E
F
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