Flowchart Of Failure Analysis For The Drive Assy - Pioneer PRO-607PU Service Manual

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5.1.4 FLOWCHART OF FAILURE ANALYSIS FOR THE DRIVE ASSY

Flowchart of Failure Analysis for The Drive Assy (1)
A
Failure analysis for the
drive system ⇒ DR1
Reset lighting is not displayed.
X/Y DRIVE Assys
Is the waveform normal when the
voltage is applied to the panel?
B
Yes
Are the panel FFC cables properly
connected to the X/Y DRIVE Assys?
Yes
Replace the panel chassis.
Failure analysis for the
drive system ⇒ DR2
C Abnormality across the whole
screen, such as luminescent spots
Yes
D
E
Another Assy may be in failure.
E
F
90
1
2
No
No
Properly connect the panel
FFC cables.
NG
Because it is difficult to identify which drive is in failure, follow the flowchart below to check each Assy.
Y DRIVE Assy / SCAN Assy
Are all the connectors properly
connected?
Yes
Is the VH set voltage (130 V)
correctly set?
Yes
Is the VYNRST set voltage
correctly set (set value: designated
for each panel)?
Yes
Is the VYRST set voltage correctly
set (set value: designated for
each panel)?
Yes
Is the input signal normal?
(See the oscilloscope photos.)
Yes
Is the waveform of the control
signal from the SCAN Assy
normal?
(See the oscilloscope photos.)
Yes
Replace the SCAN Assy.
PDP-6071PU
2
3
Are the FFC cables properly
connected?
Yes
Is the input signal normal?
Yes
Replace the X/Y DRIVE Assys.
X DRIVE Assy
C
No
No
No
No
Yes
Is the waveform normal when the
voltage is applied to the panel?
(See the oscilloscope photos.)
No
No
Replace the FFC cables.
No
Replace the Y DRIVE Assy.
3
4
No
Properly connect the FFC cables.
NG
No
Replace the FFC cables.
NG
Replace the DIGITAL Assy.
ADDRESS Assy
D
Reconnect the connectors.
NG
Set the VH voltage correctly.
NG
Set the VYNRST voltage correctly.
NG
Set the VYRST voltage correctly.
NG
NG
Replace the DIGITAL Assy.
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