PIONEER PDP-4280X - How to copy Bck-Up Data - HOW TO CLEAR HISTORY DATA

TO COPY BACKUP DATA

Adjustment data are stored in the EEPROM (IC3156/4K) on the DIGITAL Ass’y in the production process. Those adjustment data are also automatically stored in the EEPROM (for backup: IC3652) on the SENSOR Assy.  If the DIGITAL Ass’y is replaced, those adjustment data for backup can be copied from the EEPROM on the SENSOR Ass’y to a new DIGITAL Assy.

Backed up data

• Drive voltage adjustment value
• Hour-meter count
• Pulse-meter count
• Panel white balance adjustment value
• Serial No.
• Drive waveform adjustment value
• P-ON counter value
• PD/SD histories.

How to copy backup data

When the DIGITAL Assy is replaced with one for service (usual service).  Copying the data backed up in the SENSOR Assy to the EEPROM on a new DIGITAL Assy can restore adjustment data.  The EEPROM on the new DIGITAL Assy has no adjustment data, and the EEPROM for backup in the SENSOR Assy has adjustment data. After replacing the DIGITAL Assy, enter PANEL FACT. Mode, displays the PANEL INFORMATION page, then check if "NO DATA!" is set for "DIG. EEP" and "ADJUSTED" is set for "BACKUP". Then, proceed in the following steps:

Copying, using the Factory menu

• Plug in the AC cord, press the Power switch on the unit to set it to ON, then enter Standby mode.
• Turn on the power, using the remote control unit, then enter Panel Factory mode.   Copy the backup data, as shown in the figure below.

• Turn the power off.

1. After the DIGITAL Assy is replaced with one for service, be sure to check if "NO DATA!" is set for "DIG. EEP" on the PANEL  INFORMATION page of the PANEL FACT. mode.
2. 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.
3. If both the DIGITAL and SENSOR Assys are to be replaced, first replace the SENSOR Assy, turn the unit on and back off  again, then replace the DIGITAL Assy.

Copying, using the RS-232C commands

• Turn on the unit, using the remote control unit or by issuing the PON command. Then issue the FAY command.
• Issue the BCP command to transfer the data stored in the EEPROM for backup.
• Turn the power off.

In a case where normal backup data are not stored in the backup EEPROM because  the EEPROM on the DIGITAL Assy is defective, etc., and where manually adjusted  values are to be applied to the product.

It is assumed that settings for various items have been completed, using Factory menu or RS-232C commands.

Method using the Factory menu

• Set various setting/adjustment values.
• Proceed in the following steps.

• Turn the power off.

Note: When a DIGITAL Assy with an EEPROM in which adjustment data are stored is mounted, this step is not required after manual adjustment. ("DIGITAL EEPROM: REPAIR" is not indicated.)

TO CLEAR HISTORY DATA

Clearance of various logs after the Assys are replaced.

Besides adjustment data, data on accumulated power-on time and logs on defective parts of the product are backed up.  Some of those data must be cleared after the Assys are replaced for service.

Clearance of logs, using the RS-232C commands

CLICK ON THE CHART TO ZOOM

Notes: As the pulse-meter count is used for each correction function, it must be cleared when an Assy relevant to   correction functions is replaced.

When clearing logs, using the RS-232C commands, first enter Factory mode (by issuing FAY or PFY), then issue   the corresponding command. (2) Clearance of logs, using the Factory menu

1. Plug in the AC cord, press the Power switch on the unit to set it to ON, then enter Standby mode.
2. Turn on the power, using the remote control unit, then enter Panel Factory mode.

Delete various logs, as shown in the figure below: