Acer RA19WAANU, Service Manual

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1. Product Specification (continued)
1.3.1.3 Audio Jack (option)
This jack shall connect the audio input from
host computer.
1.3.2 Video Input Signals
Video Input Signal Ranges
1.3.2.1 Video Signal Amplitudes
The three video inputs consist of Red ,Green , and Blue
signals, each with its own coaxial cable terminated at the
monitor. These video signals are analog levels, where 0
V corresponds to black , and 700 mV is the maximum
signal amplitude for the respective color, when each
signal is terminated by a nominal 75.0 ohms .For a given
monitor luminance levels are measured using this
defined video amplitud driving a monitor meeting the
termination requirements .The signal amplitude is not to
be readjusted to compensate for variations in termination
impedance.
1.3.2.2 Video Signal Termination Impedance
This analog video signal termination shall be 75 1%
which shall be resistive with a negligible reactive
component
1.3.2.3 Synchronization ( Sync ) Signals
The Horizontal Sync (HS) TTL signal is used to initiate
the display of a horizontal line. HS may be either active
high or active low, depending upon the timing .The
Vertical Sync (VS) TTL signal is used to initiate the
display of a new frame .VS may be either active high or
active low, depending on the timing
1.3.2.4 Sync Signal Levels
The monitor must accept sync signals from both 3.3 and
5 volt TTL logic families.The inputs shall sense a logic 0
when the input is 0.8 volt or less and shall sense a logic
1 when the input is 2.0 volts or greater. In addition to
these level requirements, there shall also be a minimum
of 0.3 volt hysteresis provided for noise immunity
(typically by using a Schmitt Trigger input ).That is , the
input level at which the monitor actually detects a logic 0
shall be at least 0.3 volt lower than the level at which it
actually detects a logic 1.If the monitor sync processing
circuits are designed around the 3.3 volt logic family
,then the sync inputs must be 5 volt tolerant .
Ω+/-
.
DVI-I/DVI-D(If using DVI-D cable,C1,C2,C3,C4,C5 is NC)
Note 1) Schmitt-Triggers Input, Supported 3.3V device
H(&V) sync output from PC
N o . S y m b o l I t e m M i n N o r m a l M a x U n it R e m a r k
1
F h S c a n n in g H o r i z o n ta l F r e q u e n c y 3 0 9 4 k H z M in im u m r a n g e
2 F v S c a n n in g V e r tic a l F r e q u e n c y 5 5 7 6 H z M in im u m r a n g e
3 V ih H i L e v e l I n p u t 2 5 N o t e 1 )
4 V il L o w L e v e l I n p u t 0 0 .8 V N o t e 1 )
5 V id e o R G B A n a l o g V id e o L e v e l 0 .0 0 .7 1 .0 V 7 5 Ω to G r o u n d
N o t e 1 ) S c h m itt- T r ig g e r s I n p u t , S u p p o r te d 3 .3 V d e v ic e H ( & V ) s y n c o u tp u t f r o m P C .
V i d e o I n p u t S i g n a l
Pin Signal Pin Signal Pin Signal
1
Red-Video
6
Red-GND
11
NC
2 Green-Video 7 Green-GND 12 DDC-SDA
3 Blue-Video 8 Blue-GND 13 H-SYNC
4 NC 9 + 5V 14 V-SYNC
5
Connection Detect
10
GND
15
DDC-SCL
Pin Name Description
1 Red-Video Red video signal input
2 Green-Video Green video signal input
3 Blue-Video Blue video signal input
4 NC Not connect
5 Connection Detect Deteck VG A Cable have Connected or not
6 Red-GND Analog signal ground for the Red video
7 Green-G ND Analog signal ground for the Green video
8 Blue-GND Analog signal ground for the Blue video
9 +5V +5V input from host system for the VESA DDC 2Bi function
10 Sync-G ND Signal ground
11 NC Not connect
12 NCDDC-SDA SDA signal input for the VESA D DC 2Bi function
13 H-SYNC Horizontal signal input from the host system
14 V-SYNC Vertical signal input from the host system
15 DDC-SCL SCL signal input for the VESA D DC 2Bi function
Connector Pin Description
D-SUB Description
Pin Signal Pin Signal Pin Signal
1 RX2- 13 NC C1 Analog Red(NC)
2 RX2+ 14 5V C2 Analog Green (NC)
3 GND 15 DVI Connect C3 Analog Blue (NC)
4 NC 16 HP C4 Analog H-Sync (NC)
5 NC 17 RX0- C5 GND
6 SCL 18 RX0+
7 SCA 19 GND
8 Analog V-Sync(NC) 20 NC
9 RX1- 21 NC
10 RX1+ 22 GND
11 GND 23 RXC+
12 NC 24 RXC-
DVI-I/DVI-D Connector Pin Description
Pin Name Desription
Pi
n Name Desription
1 RX2- TMDS link #0 channel #2 differential pair 16 HP Hot plugging
2 RX2+ TMDS link #0 channel #3 differential pair 17 RX0- TMDS link #0 change #1 differential pair
3 GND GND for no link share 18 RX0+ TMDS link #0 change #1 differential pair
4 NC NC 19 GND GND for no link share
5 NC NC 20 NC NC
6 SCL Clock line for DDC interface 21 NC NC
7 SDA Data line for DDC interface 22 GND Clock shield
8 Analog V-Sync V-sync for analog interface 23 RXC+ TMDS clock differential pair
9 RX1- TMDS link #0 change #1 differential pair 24 RXC- TMDS clock differential pair
10 RX1+ TMDS link #0 change #1 differential pair C1 Analog Red Analog Red signal
11 GND GND for no link share C2 Analog Green Analog Green signal
12 NC NC C3 Analog Blue Analog Blue signal
13 NC NC C4 Analog H-Sync H-Sync for analog interface
14 5V +5V input from host system for DDC 2B function C5 Analog GND Analog GND
15 DVI Connect Using as Detect Cable
No. Symbol Item Min Normal Max Unit Remark
1 Fh Horizontal Frequency 31 83 kHz Minimum range
2 Fv Vertical Frequency 56 75 Hz Minimum range
3 Vih Hi Level Input 2.0 5.0 V Note 1)
4 Vil Low Level Input 0 0.8 V Note 1)
5 Video
RGB Analog Video
Level 0.0 0.7 0.1 V 75Ω to Ground
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ACER X193HQ