MSC Q7-MB-EP6
User Manual
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3.3.4.5 Backlight brightness control jumpers
are used in combination to select the type of brightness control signal
used for the LCD panel backlight inverter or LED driver. The signal coming from the
QsevenTM module is typically a PWM signal. This signal can be passed through unmodified,
or inverted. It can also be converted to an analog voltage level for backlights which do not
use a PWM signal for brightness control.
X80x Pins
Output signal
22-24
21-23
Analog level based on inverted PWM signal
Note: These jumpers are placed on one side only!
22-24
23-25
PWM signal (non-inverted) (default)
Note: These jumpers are placed on one side only!
24-26
21-23
Analog level based on non-inverted PWM signal
Note: These jumpers are placed on one side only!
24-26
23-25
PWM signal (inverted)
Note: These jumpers are placed on one side only!
Table 10
Jumper settings backlight brightness control X80x
3.3.4.6 EDID EEPROM address select jumper
An EDID EEPROM is available on the baseboard in order to configure a customized setting
for an LCD panel which is not available in the default BIOS LCD panel entries.
X80x pins
Function
28-30 Removed
(default)
EDID EEPROM disabled (A2 = 1)
28-30 Installed
EDID EEPROM enabled (A2 = 0)
Table 11
Jumper settings EDID EEPROM addresses X80x
3.3.4.7 Backlight control PWM signal jumper (J801)
The signal level for the PWM signal of LVDS can be set to 3.3V or 5V via the jumper
Figure 6 Jumpers J801
Jumper on pin
Function
1-2 (default)
PWM signal level set to 3.3V
2-3
PWM signal level set to 5V
Table 12
Jumper settings for PWM signal (J801)
