Pioneer PDP-4270XA Service Manual page 160

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9.3.13 OTHER COMMANDS
• SETTING FOR FACTORY MODE PERMISSION / PROHIBITION o o o [FAY / FAN]
A
The commands FAY/FAN are for prohibiting/permitting panel-adjustment commands.
Command
Effective Operation
Format
Normal operation mode
[FAY]
while the power is on
During FAY
[FAN]
B
• BACKUP FUNCTION FOR ADJUSTMENT VALUE FOR THE MAIN UNIT o o o [FAJ / UAJ / CBU / BCP]
When the DIGITAL Assy is to be replaced, adjustment values can be copied from the backup EEPROM to the EEPROM
of the Assy for service.
C
Command
Effective
Format
Operation Modes
[FAJ]
[UAJ]
During FAY
[CBU]
D
[BCP]
E
F
160
1
2
Operation
Control
Modes
Adjust command is valid.
Adjust command is invalid.
Operation
To make the flag setting that
indicating that adjustment of the
panel unit has been completed
To make the flag setting that
indicating that adjustment of the
main unit has not been completed
To make the flag setting that
indicating that backup data
have not been copied
To copy Digital backup data
to EEPROM
2
3
Mask indications will be forcibly turned off.
Control
Writing 00 to the 4 k byte ROM and
copying to the 2 k byte ROM
Writing F0 to the 4 k byte ROM
Writing F0 to the 2 k byte ROM
Copying backup data
PDP-427XD
3
4
Remarks
Remarks
This takes at least 350 ms.
The backup ROM is
initialized.
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