PIONEER PDP-4280HD
Service Manual

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Recovery flowchart (1-1)...Changing the Vol Offset setting voltage
Note: Disregard the discharge that may appear during voltage-change setting.

[From the main flowchart (1)]

Display RST MASK 09 (light blue). / [MKS S59]

� If RST MASK 09 (light blue) is already displayed, skip this step.

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Set VOL OFFSET to the setting value 000. / [VOF 000] � This setting becomes VOL OFFSET_min1.

Gradually increase the VOL OFFSET value until disappear the discharge (lit cell). The VOL OFFSET value must be 245 or less.

VOL OFFSET_min1
Note: Make a note of this VOL OFFSET_min1 value.

VOL OFFSET_min1
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155?

No

Replacement of abnormal circuits or re-replacement of the panel required

Yes Display RST MASK 10 (light purple). / [MKS S60]

Set VOL OFFSET to the setting value 000. / [VOF 000] � This setting becomes VOL OFFSET_min2.

Gradually increase the VOL OFFSET value until disappear the discharge (lit cell). The VOL OFFSET value must be 245 or less.
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VOL OFFSET_min2
Note: Make a note of this VOL OFFSET_min2 value.

VOL OFFSET_min2

155?

No

Replacement of abnormal circuits or re-replacement of the panel required VOL OFFSET_min

Yes Choose the higher value between VOL_OFFSET_min1 and VOL_OFFSET_min2, and set it as VOL_OFFSET_min.

[To the Recovery flowchart (1-2)]
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PDP-4280HD
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