PDP-5050SX
139
5
6
7
8
5
6
7
8
C
D
F
A
B
E
7.1.6 BACKUP WHEN THE MAIN UNIT IS ADJUSTED
Outline
The data on the adjustment values for the main unit are stored in an EEPROM (IC5206, 4 kbits) on the DIGITAL VIDEO Assy. Part
of the data (area A in the figure below) are automatically copied to an EEPROM (IC7405, 2 kbits) mounted on the MAIN BOARD Assy
for backup. When the DIGITAL VIDEO Assy is replaced, the backup data on the adjustment values for the main unit stored in
the MAIN BOARD Assy can be copied to the new DIGITAL VIDEO Assy, thus enabling you to omit newly performing adjustments on
the main unit. The logs for the product (power-down log, etc.) can also be copied.
Basic flow of automatic backup
Using a keyword, the data in areas A and B are judged as to whether they have been adjusted or not, then copying is performed.
Actual automatic backup operations by RS-232C command
1. When the DIGITAL VIDEO Assy is replaced with a new DIGITAL VIDEO Assy for service
Changing of keywords is not required. Replace the DIGITAL VIDEO Assy with an Assy for service, and send the "BCP" RS-232C
command. Thus, the backup data in the EEPROM on the MAIN BOARD Assy are copied to the EEPROM on the DIGITAL VIDEO Assy
for service.
Note:
To remind you to send the "BCP" command after replacing the DIGITAL VIDEO Assy with one for service, a warning by the
LEDs (the red LED lit and the green LED flashing at intervals of 200 ms) is indicated until the "BCP" command is issued.
2. When a repaired DIGITAL VIDEO Assy is mounted on another unit (reuse of the repaired DIGITAL VIDEO Assy)
The keyword of the DIGITAL VIDEO Assy to be reused must be changed to "not adjusted" using the "UAJ" RS-232C command.
Note 1: If a repaired DIGITAL VIDEO Assy is mounted in another unit (Unit 2) without this change of keyword, and the power to the unit 2 is
turned off, the data in force before the repair of the DIGITAL VIDEO Assy will be copied to Area B of the MAIN BOARD Assy of Unit 2,
overwriting the data necessary for Unit 2. Once overwritten, the original data will not be restored.
Data to be backed up in the digital EEPROM (area A)
• Margin adjustment values (Vsus, Vofset)
• Power upper-limit adjustment value (ABL)
• PANEL white-balance adjustment values
(PANEL-R HIGH, PANEL-G HIGH, PANEL-B HIGH, PANEL-R LOW, PANEL-G LOW, PANEL-B LOW)
• Drive waveform adjustment values
(X-SUS-U1, X-SUS-U2, X-SUS-D1, X-SUS-D2, Y-SUS-U1, Y-SUS-U2, Y-SUS-D1, Y-SUS-D2, Y-SUS-D3, Y-SUS-D4)
• Hour meter
• Pulse meter
• Serial Number
• Number of times the power has been turned on
• PD/SD logs
EEPROM on the DIGITAL VIDEO Assy
Backup data for the
DIGITAL VIDEO Assy
(Area A)
Backup data for the
DIGITAL VIDEO Assy
(Area B)
1
Power off
2
"BCP" command
2
"BCP" command
DIGITAL VIDEO Assy for service
MAIN BOARD Assy
Other data
(Area C)
EEPROM on the MAIN BOARD Assy (for backup)
1
The keyword on the DIGITAL VIDEO Assy is checked when the power is turned off, and if it is "adjusted", automatic backup is performed.
2
If the keyword on the MAIN BOARD Assy (Area B) is "adjusted," copying can be performed with the "BCP" RS-232C command.
Data in the EEPROM on the
DIGITAL VIDEO Assy
(Area A)
(Not adjusted
→
Adjusted)
Data in the EEPROM on the
DIGITAL VIDEO Assy
(Area B)
(Adjusted)
