Siemens SXG 75 Service Repair Documentation page 52

5 RD
6 WR
7 DAT0
8 DAT1
9 DAT2
10 DAT3
11 DAT4
12 DAT5
13 DAT6
14 DAT7
15 LCD_RESET
16 GND
17 DAT15
18 DAT14
19 DAT13
20 DAT12
21 DAT11
22 DAT10
23 DAT9
24 DAT8
25 LCD_VSYNC
26 VLCD
27 GND
28 VIO
29 GND
30 VLED+
LCD interface signals
11.1.3 Contrast and colour adjustment
Colour adjustment is achieved using the RGBSET command, which defines the look up table used
to map the input data to the corresponding 18-bit pixel colour.
Contrast adjustment is achieved by writing an 8-bit value to the display using the WRCNTR
command. The default value is 03F hex.
Technical Documentation
TD_Repair_L3_SXG75_R1.0.pdf
I OE2_N
I WE2_N
IO EBI2_D(0)
IO EBI2_D(1)
IO EBI2_D(2)
IO EBI2_D(3)
IO EBI2_D(4)
IO EBI2_D(5)
IO EBI2_D(6)
IO EBI2_D(7)
I RESOUT1_N OR
LCD_RST_N
(D2200 OR gate)
IO EBI2_D(15)
IO EBI2_D(14)
IO EBI2_D(13)
IO EBI2_D(12)
IO EBI2_D(11)
IO EBI2_D(10)
IO EBI2_D(9)
IO EBI2_D(8)
O LCD_VSYNC
I 2.9V from N2201
I VREG_MSME
I VREG_BCKLT
Company Confidential
2006©BenQ
Read signal
Write signal
D0 ～ D7:connects to the 8/16- bit standard
MPU data bus, using the 8/16-bit, bi-
directional data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
Initialized when set to "L".
D8 ～ D15:connects to the 16- bit standard
16-bit, bi-directional data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
EBI2 data bus
Synch Pin to avoid tearing effect
Power supply for logic
Power supply for I/O
Power supply for LED backlight
Release 1.0
01/2006
Page 52 of 73