Fay / Fan (Adj. Commands Permission / Prohibition); Faj / Uaj / Cbu / Bcp (Backup Function For Adjustment Value) - Pioneer PDP-4280HD Service Manual

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9.3.14 FAY / FAN (ADJ. COMMANDS PERMISSION / PROHIBITION)

The commands FAY/FAN are for prohibiting/permitting panel/MTB-adjustment commands.
Command
Effective Operation
Format
Modes
Normal operation mode
[FAY]
while the power is on
During FAY
[FAN]

9.3.15 FAJ / UAJ / CBU / BCP (BACKUP FUNCTION FOR ADJUSTMENT VALUE)

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.
Command
Effective
Format
Operation Modes
[FAJ]
[UAJ]
During FAY
[CBU]
[BCP]
5
6
Operation
Control
Adjustment command is valid.
Adjustment command is invalid.
Operation
Control
To make the flag setting that Writing 00 to the 4 k byte ROM and
indicating that adjustment of the
copying to the 2 k byte ROM
panel unit has been completed
To make the flag setting that Writing F0 to the 4 k byte ROM
indicating that adjustment of the
main unit has not been completed
To make the flag setting that Writing F0 to the 2 k byte ROM
indicating that backup data
have not been copied
To copy Digital backup data to
Copying backup data
EEPROM
PDP-4280HD
6
7
Remarks
For details, refer to the section "6.1.3 FUNCTIONS WHEN
ENTERING THE SERVICE FACTORY MODE".
This takes at least 350 mS.
The backup ROM is
initialized.
7
8
A
B
C
Remarks
D
E
F
157
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