![background image](http://html1.mh-extra.com/html/viewsonic/ve510s-b-1/ve510s-b-1_service-manual_1021037021.webp)
Monitor Range Limits:
Min Vertical Freq - 50 Hz
Max Vertical Freq - 85 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 62 KHz
Pixel Clock - 80 MHz
Secondary GTF - Not Supported
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(108-125) Detailed Timing / Descriptor Block 4:
Monitor Name:
VE510s
(126) No Extension EDID Block(s)
(127)
CheckSum OK
6. THEORY OF OPERATION
This section describes the function of the LCD monitor per functional block.
This monitor includes MB board, power board and button board.
6.1 MB BOARD
The MB board is a two-layer, single-landed design with ground and internal planes provided. DC power from the
power board enter the board through a 6P cable. Other connector on the board is for button board .The VGA cable
is a signal cable that contains video signal, sync signal and DDC signal from PC VGA adapter. This system board
consists of 4 functional areas : flat panel controller, MCU with flash ROM , power regulator .
6.1.1 Flat panel controller… RTD2013(U7)
The heart of the system board is Realtek RTD2013. The RTD2013 is a graphics processing IC for LCD monitor.
It provides all key IC functions required for LCD panel. On-chip functions include a high-speed triple-ADC , PLL,
high scaling engine, OSD controller.
a)
Clock Generation :
Crystal Input Clock (TCLK and XTAL). This is the input pair to an internal crystal oscillator and
corresponding logic. A 24.576 MHz crystal is recommended.
b)
Analog to Digital Converter:
The RTD2013 chip has three ADC's (analog-to-digital converters), one for each color (red, green and
blue) .The analog RGB signals are connected to RTD2013 as described below
Pin Name
Pin Number
Red +
37
Red -
38
Green +
34
Green -
35
Blue +
30
Blue -
31
c)
OSD : The RTD2013 has a fully programmable ,high-quality OSD controller. The on-chip static
RAM(4096 words by 24 bits) stores the cell map and the cell definitions.
18
ViewSonic
Corporation
Co
nfidential
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Do
Not
Copy
VE510s/b-1
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...