![background image](http://html1.mh-extra.com/html/viewsonic/ve510s-b-1/ve510s-b-1_service-manual_1021037022.webp)
d)
MTV312 Micro controller: The MTV312 micro controller(MCU) serves as the system micro controller. It’s
programs the RTD2013 and manages other devices in the system such as the keypad, the backlight, LED,
audio and non-volatile RAM. using general purpose input/output (GPIO) pins.
Pin number
Pin Name
Pin Number Usage
1
P5.2
Key / Power on ,off
13
P3.4
NV_RAM (U4) SDA
14
P3.5
NV_RAM (U4) SCL
41
P5.4
Key_down
40
P5.5
Key_right
42
P5.3
Key_up
34
P5.6
Key_left
9
P6.3
Key_mute
2
P5.1
Key_select
27
P6.0
LED_red
26
P6.1
LED_green
16
P6.2
LCD panel power1 on / off control
17
P1.0
Backlight on / off control
e)
Panel Power Sequencing ( PANEL_PW12,3) ( Pin 16, 18) : The MTV312 has two dedicated outputs
VDDCTRL1 and 2 ( Pin32 and Pin3) to control LCD power sequencing once data and control signals
are stable.
f)
Panel interface (Pin73~94) : The RTD2013 driver interface is highly programmable. It supports dual bus /
dual port for XGA drivers.
6.1.2 Power Regulator AIC1563 (U2),AIC1739-25CX(U10) : The AIC1563 is a monolithic control IC
containing the primary functions required for DC to DC converters. The device consists of an
internal temperature compensated reference, comparator, controlled duty cycle.
Oscillator with an active current sense circuit. Desired output voltage are determined by the equation,
Volt = 1.25 ( 1 + R11 / R12), In this case, the output voltage are 3.3Volts
The AIC1563 is a low dropout positive adjustable regulator with minimum of 1A output current capability.
So it is well suited for 2.5 V Regulator.
6.1.3 Power Regulator AIC1739-25CX(U10) : The AIC1739-25CX is a monolithic control IC containing the
primary functions required for DC to DC converters. The device consists of an internal
temperature compensated reference, comparator, controlled duty cycle.
Oscillator with an active current sense circuit. Desired output voltage are determined by the fixed
output function, the output voltage are 2.5 Volts for scaler power.
6.2 Power(Inverter) Board
This is a specific power(inverter) power board for L5VC monitor 30W 12V 2.5A output power and backlight
which converters 12 Vdc to drive two cold cathode fluorescence tubes.
6.2.1 Inverter Electrical specification described as below.
Rated Input Voltage
12Vdc
Input Voltage Range
11.4 ~ 12.6 Vdc
Input Current
<1.5A
Input
19
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Summary of Contents for ve510s/b-1
Page 36: ...3 Read DDC data from Monitor 33 ViewSonic Corporation Confidential Do Not Copy VE510s b 1...
Page 57: ...11 PCB Layout Diagrams Main Board 54 ViewSonic Corporation Confidential Do Not Copy VE510s b 1...
Page 58: ...Control Board 55 ViewSonic Corporation Confidential Do Not Copy VE510s b 1...