Pioneer DV-48AV Service Manual page 27

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Symptoms That May Occur When Any Of The Following ICs Is In Failure
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IC
EEPROM
(DVD MT PCB Assy : IC4001)
16M Flash ROM
(DVD MT PCB Assy : IC4004)
DVD IC
(DVD MT PCB Assy : IC4002)
64M SDRAM
(DVD MT PCB Assy : IC4005)
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User's data cannot be stored in memory.
The ID number is lost.
The power cannot be turned on.
Downloading of the firmware cannot be performed.
Any kind of symptoms (no power, a failure in any of the servo, video and audio systems, etc.) may be
generated, because the DVD processing is performed by a single chip.
No power.
Block noise is generated during playback.
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Symptoms
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DV-48AV
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