Pioneer PDP-506PG Service Manual page 60

5
7 Backup function for adjustment values for the main unit • • • [FAJ/UAJ/CBU/BCP]
When the HD DIGITAL Assy is to be replaced, adjustment values can be copied from the backup EEPROM to the
EEPROM of the Assy for service.
Command
Effective
Format
Operation Modes
[FAJ]
[UAJ]
During FAY
[CBU]
[BCP]
When the flag indicating that the line adjustments (SUS waveform, voltage margin, and panel WB) for the main unit have
been completed is set to on, data stored from Addresses 0x0000 to 0X00FF in the digital EEPROM are copied to the same
addresses of the backup EEPROM. Copying will be executed immediately before the relay of normal operation is off.
• When the command BCP is received while a warning indicating that backup copying has not been completed is displayed
(conditions: main EEPROM = not adjusted, and backup EEPROM = adjusted), backed-up data will be copied to the main
EEPROM, and various adjustment values related to Factory mode will be readjusted. Then LED warning indication will be
shut off, and normal LED indication will be restored.
• If the backup EEPROM has not been adjusted when the command BCP is received (0x0063 is not written to all three
addresses of the key data), copying of the backup data is not possible, and "XXX" is returned.
EEPROM for the module
Address
microcomputer
0x0000
Data that need backup, such as
adjustment values for the main
unit and the data from the hour
0x00FF
meter
0x0100
Data that do not need backup,
such as raster mask color
0x01FF
Note:
• When the command FAJ, UAJ, or CBU is executed, only high-order one-byte (0x00 or 0xF0) key data will be written to the
EEPROM, and lower-order one-byte (0x63) data will not be changed.
• It takes at least 350 ms from reception of the command FAJ until an echo is sent back, because data are copied to the
backup EEPROM.
7 Factory presetting • • • [PFS]
Command
Effective
Format
Operation Modes
[PFS] During FAY
• When this command is executed, the values not stored in the EEPROM are initialized, mask indication is set to OFF,
control of the power for line aging is set to OFF, and detection of the system cable is set to ON.
5
6
Operation
Control (by the microcomputer itself)
To make the flag setting that
Writing 00 to the 4-kbyte ROM and
indicating that adjustment of the
copying to the 2-kbyte ROM
main unit has been completed
To make the flag setting that
Writing F0 to the 4-kbyte ROM
indicating that adjustment of the
main unit has not been completed
To make the flag setting that
Writing F0 to the 2-kbyte ROM
indicating that backup data
have not been copied
To make the flag setting that
Copying backup data
indicating that backup data
have been copied
Writing when the power is
off, etc.
Executing copying with the
command BCP
Operation
Control (by the microcomputer itself)
Initialized to factory-preset values
PDP-506PE
6
7
Remarks
This takes at least 350 ms.
The backup ROM is
initialized.
EEPROM for data backup
Data that need backup, such as
adjustment values for the main
unit and the data from the hour
meter
Remarks
7
8
A
B
C
Address
0x00
0xFF
D
E
F
57
8