Q7C3 LCD Monitor Service Guide
Alignment Procedure
4
Read User R-Gain data from NVRAM
A3
6C
XX
checksum
Read User G-Gain data from NVRAM
A3
6D
XX
checksum
Read User B-Gain data from NVRAM
A3
6E
XX
checksum
Change Color Temperature to C1
CC
1
XX
checksum
Change Color Temperature to C2
CC
2
XX
checksum
Change Color Temperature to C3
CC
3
XX
checksum
Change C/T to User
CC
4
XX
checksum
User mode to factory mode
1A
5A
XX
checksum
Auto Color (Offset1, Offset2, Gain)
1B
5A
XX
checksum
Factory mode to User mode
1E
5A
XX
checksum
Clear user area data
1F
5A
XX
checksum
Off burn in mode
CE
2
XX
checksum
Change Language Setting
66
0~7
XX checksum
Read EEPROM Contrast
A3
92
XX
checksum
Read EEPROM Brightness
A3
93
XX
checksum
Read EEPROM C/T Point
A3
94
XX
checksum
Read EEPROM OSD-Hpos
A3
95
XX
checksum
Read EEPROM OSD-Vpos
A3
96
XX
checksum
Read EEPROM Language
A3
97
XX
checksum
Read EEPROM OSD Timer
A3
98
XX
checksum
Read EEPROM Volume
A3
99
XX
checksum
Table 1
When PC Host sends 0x7D command to MCU, MCU must return as following (2 bytes)
Return Code
R-Byte1
R-Byte2
Checksum error code
FC
AA
Normal return code
the above Byte3
(/data) FC
If normal return code is exact FCh
FC
CF
