Service manual

1.1 Scope:
This document defines the design and performance
requirements for the Liteon standard 17” wide flat
panel monitor. The display element shall be a 17” inch
diagonal, WXGA (1440 x 900) resolution, TFT-LCD
(Thin Film Transistor Liquid Crystal Display). Video
input signals are Analog D-sub with non-interlaced
signaling. Power saving function complies with the
DPMS (Display Power Management Standard).
1.1.1 General display parameters
1.1.2 Optical Characteristics
The panel model name is HSD170MGW1-A
supplied by Hannstar.
1.2.3 Electrical
This section describes the electrical requirement of
the monitor. The block diagram in Figure 1 illustrates
the various electrical sub–system.
1.2 General Requirements:
1.2.1 Test Condition
Brightness level at max & contrast level at default
full white pattern test mode following spec. Warm
up more than 30min, ambient light < 1 Lux,
Luminance meter CA210 or BM7 or compatible
equipment.
1.2.2 Test Equipment
The reference signal source is a calibrated
Chroma 2326 or Quantum 801GD video
generator. The use of other signal generators
during qualification and production is acceptable
provided the product complies with this
specification.
The LCD monitor will contain an interface board, a
Power/Inverter board, and a function key board. The
interface block will house the flat panel control logic,
brightness control logic, and DC-DC conversion to
supply the appropriate power to the whole board and
LCD panel, and transmitting LVDS signals into LCD
Module to drive the LCD display circuit. The inverter
block will drive the two CCFLs (Cold Cathode
fluorescent Tube). The power block will provide the
DC power to interface board and LCD panel. The
function key block will provides the OSD control
signal, power ON/OFF and LED indicator to the
interface board.
Display Area 17” diagonal,367.2(H)x229.5(V)
Resolution 1440 x 900 pixels
Display Color Number 16.2M colors
Display Type a-Si TFT active-matrix
Contrast Ratio 500 : 1 typ.
Brightness
250cd/m
2
typ.
Response Time (Ton + Toff) 8 ms typ.
Pixel Pitch 0.255mm x 0.255mm RGB Vertical Stripes
130 degrees typ,
CR>10
140 degrees typ,
CR>10
Vertical Viewing
Horizontal Viewing
LCD Panel
Function Key Board
Scaler IC
GM5726H
Regulator
5V ~ 3.3V
5V ~ 1.8V
EEPROM
24C02
D-SUB
XTAL
14.318MHz
EEPROM
24CL16
SST25VF01
Power & Inverter
AC 110/220V
Input
Inverter Output
Analog Video
Input
+5V & DIM & Enable
LVDS
DIM & Enable
+5V Vcc
R.G.B & Hs, Vs
5V
SPEC
H 31kHz ~ 83kHz
V 56Hz ~ 76Hz
Max Pixel clock 205MHz
RGB Input Level 0.7Vp-p
RGB Input Impedance 75Ω
Sync Input Signal Separate SYNC, Composite Sync
Sync Input Impedance 50Ω
AC power
AC 100V ~ AC 220V ± 10% 50/60Hz, 3 pin
AC power cord
Input connectors D-SUB 15 pin
AC IN 90~264V
Standby, Suspend,
Active Off
Power Off < 1W @ (90VAC~240VAC)
User’s Control Front Panel Buttons POWER, MENU, SELECT, + , -
18
VESA DDC2B
DPMS
H ±1kHz, V ±1 Hz
Normal Operation
ITEM
Analog Signal Input
Frequency Ranges
Connectors
Power Consumption
35W Max
<2W
Dimming control range
Power Saving
Input Signal Counter tolerance
(max-min/max) x 100%
35% typical
Pre-Defined Timing
Plug and Play
1. Product Specification
2
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ACER AL1716W