Automatic Backup Of Digital Video Assy Data - Pioneer PDP-433MXE Service Manual

7.1.3 AUTOMATIC BACKUP OF DIGITAL VIDEO ASSY DATA

Description
Auto copies data of EEPROM (IC1204/2k bit) on the DIGITAL VIDEO Assy as data for backup in the Assy replacement to one part of
EEPROM (IC5502/64k bit) of the RGB Assy (area A of figure below).
Therefore DIGITAL VIDEO Assy or main unit adjustment item in the RGB Assy replacement (data of EEPROM on DIGITAL VIDEO
Assy) is succeeded to Assy after replacement.
Note : COLOR and TINT are main unit adjustment items, but does not automatic backup because there are data in area C
(refer to figure below).
Contents of EEPROM on the DIGITAL VIDEO Assy
• Adjustment value of PANEL White Barance
PANEL-R HIGH : Main unit adjustment item
PANEL-G HIGH : Main unit adjustment item
PANEL-B HIGH : Main unit adjustment item
PANEL-R LOW : Main unit adjustment item
PANEL-G LOW : Main unit adjustment item
PANEL-B LOW : Main unit adjustment item
• Adjustment value of ABL
ABL LEVEL : Main unit adjustment item
• Adjustment value of drive system
X-SUS-B : Main unit adjustment item
X-SUS-G : Main unit adjustment item
Y-SUS-B : Main unit adjustment item
Y-SUS-G : Main unit adjustment item
V-SUS : Main unit adjustment item
V-OFFSET : Main unit adjustment item
• Pulse meter
• Hour meter
• Setting data of various FULL MASK
Flow of basic automatic backup
Use a key word, and judge each data (area A and B) whether it is the adjusted data or the not adjusted data, and perform the copy operation.
Perform automatic data backup
Perform automatic data backup
Perform automatic data backup
RGB Assy
EEPROM (IC5502)
For copy (backup)
Data of DIGITAL VIDEO
Assy
Area A
Data of RGB Assy
Save area
Area C
1 Perform the copy whenever enter the service factory mode. (There is not relation in a key word.)
2 In the power supply ON, confirm a key word, and perform the copy when a key word of DIGITAL
VIDEO Assy (area B) does not adjust and a key word of RGB Assy is adjustment complete.
PDP-433CMX, PDP-433MXE
DIGITAL VIDEO Assy
EEPROM (IC1204)
Data of DIGITAL VIDEO
1
Assy
2
Area B
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