Pioneer KURO PDP-LX508D, Service Manual

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PDP-LX5080D
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8.2 BACKUP OF THE EEPROM (DIGITAL ASSY)
Outline
Adjustment data are stored in the EEPROM (4K) on the DIGITAL Assy in the production process. Those adjustment data are
also automatically stored in the EEPROM (for backup) on the PA
N EL SE N SOR Assy.
If the DIGITAL Assy is replaced, those adjustment data for backup can be copied from the EEPROM on the PA N EL SE N SOR
Assy to a new DIGITAL Assy.
Backed up data
• Drive voltage adjustment value
• Hour-meter count
• Pulse-meter count
• Panel white balance adjustment value • Serial N o.
• Drive waveform adjustment value
• P-O
N counter value
• PD/SD histories
How to copy backup data
1. When the DIGITAL Assy is replaced with one for service (usual service)
Adjustment data can be restored by copying the data backed up in the PA N EL SE N SOR Assy to the EEPROM on a new
DIGITAL Assy.
The EEPROM on the new DIGITAL Assy has no adjustment data, and the EEPROM for backup in the PA
N EL SE N SOR Assy
has adjustment data. After replacing the DIGITAL Assy, enter PA N EL FACT. mode, display the PA N EL I N FORMATIO N page,
then check if " N O DATA!" is set for "DIG. EEP" and "ADJUSTED" is set for "BACKUP". Then, proceed in the following steps:
(1) Copying, using the Factory menu
1
Plug in the AC cord, press the Power switch on the unit to set it to O N , then enter Standby mode.
2
Turn on the power, using the remote control unit, then enter Panel Factory mode.
Copy the backup data, as shown in the figure below.
(2) Copying, using the RS-232C commands
1
Turn on the unit, using the remote control unit or by issuing the PO N command. Then issue the FAY command.
2
Issue the BCP command to transfer the data stored in the EEPROM for backup.
3
Turn the power off.
3
Turn the power off.
• After the DIGITAL Assy is replaced with one for service, be sure to check if " N O DATA!" is set for "DIG. EEP" on the PA N EL
I N FORMATIO N page of the PA N EL FACT. mode.
• If copying of the backup data fails in the above procedure, the red LED lights, and the blue LED flashes, as a warning that
no backup data were copied.
• If both the DIGITAL and PA
N EL SE N SOR Assys are to be replaced, first replace the PA N EL SE N SOR Assy, turn the unit on
and back off again, then replace the DIGITAL Assy.
PA N EL I N FORMATIO N
ETC. (+)
BACKUP DATA : N O OPRT
Key Down 7th
SET
Right
SET (5 sec)
BACKUP DATA : TRA N SFER