Backup Of The Eeprom (Digital Assy) - Pioneer KRP-500P Service Manual

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8.2 BACKUP OF THE EEPROM (DIGITAL ASSY)

Outline
Adjustment data are stored in the EEPROM on the DIGITAL Assy in the production process. Those adjustment data are also
automatically stored in the EEPROM (for backup) on the SENSOR Assy.
If the DIGITAL Assy is replaced, those adjustment data for backup can be copied from the EEPROM on the SENSOR Assy to
a new DIGITAL Assy.
Backed up data
• Drive voltage adjustment value
• Panel white balance adjustment value
• Drive waveform adjustment value
• Hour-meter count
How to copy backup data
1. When the DIGITAL Assy is replaced with one for service (usual service)
Immediately after the DIGITAL Assy is replaced, the EEPROM on the DIGITAL Assy is in the status "adjustment not
completed," and the EEPROM for backup on the SENSOR Assy is in the status "adjustment completed." The LED on the main
unit warns you that the adjustment data in the EEPROM for backup have not been copied to the EEPROM on the DIGITAL
Assy, by lighting the red LED and flashing the blue LED. In such a case, the adjustment data for backup can be used by
copying the data to the EEPROM on the DIGITAL Assy, with the following procedures:
(1) Copying, using the Factory menu
1 Turn on the power.
2 Enter the Panel Factory mode.
3 Display the PANEL INFORMATION page, then check if "NO DATA!" is set for "DIG. EEP" and "ADJUSTED" is set for
"BACKUP".
4 Copy the backup data, as shown in the figure below.
PANEL INFORMATION
Key Down 7th
ETC. (+)
SET
BACKUP DATA : NO OPRT
BACKUP DATA : TRANSFER
5 Check if "ADJUSTED" is set for "DIG. EEP" on the PANEL INFORMATION page.
6 Turn off the power.
(2) Copying, using the RS-232C commands
1 Turn on the power.
2 Issue the FAY command.
3 With the QS2 command, confirm that the main unit adjustment flag is "adjustment not completed" and that the adjustment
backup flag is "adjustment completed."
4 Issue the BCP command to transfer the data stored in the EEPROM for backup.
5 With the QS2 command, confirm that the main unit adjustment flag becomes "adjustment completed."
6 Turn off the power.
Note: If both the DIGITAL and SENSOR Assys are to be replaced, replace the SENSOR Assy first in order to store the
backup data. Then turn the unit on then back off again, then replace the DIGITAL Assy.
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6
Right
SET (5 sec)
KRP-500P
6
7
• Pulse-meter count
• P-ON counter value
• Serial No.
• PD/SD histories
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A
B
C
D
E
F
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