Acer AL722 User manual

1. ELECTRICAL REQUIREMENTS..................................................................... 2
A. LCD Panel Specification............................................................................................................................................2
B. CONTROLS ..............................................................................................................................................................3
C. Power Management ...................................................................................................................................................3
D. Display Modes FOR Inspections ...............................................................................................................................4
2. VL-710 DISPLAY CONTROL BOARD............................................................. 5
A. Description.................................................................................................................................................................5
B. Features......................................................................................................................................................................5
C. BLOCK DIAGRAM..................................................................................................................................................5
D. Connector Locations ..................................................................................................................................................6
E. Connector Type..........................................................................................................................................................6
F. Connector pin assignment..........................................................................................................................................6
3. VK-715 Control Panel and Audio Board ............................................................ 9
E. Description.................................................................................................................................................................9
F. Electrical characteristics (Tamb=25°)........................................................................................................................9
G. Connector and Switch Locations ...............................................................................................................................9
H. Connector and Switch Locations ...............................................................................................................................9
I. Connector pin Assignment.........................................................................................................................................10
J. J2................................................................................................................................................................................10
K. Switch definition........................................................................................................................................................11
L. LED definition ...........................................................................................................................................................11
M. Variable resistor .........................................................................................................................................................11
4. DC/DC POWER and Audio CKT VM-517 ........................................................ 12
A. Input:..........................................................................................................................................................................12
B. Output: .......................................................................................................................................................................12
C. Efficiency: 80% min at Maximum Load....................................................................................................................12
D. Connector Locations ..................................................................................................................................................12
E. Connector type for VM-515.......................................................................................................................................12
F. Connector pin Assignment.........................................................................................................................................13
5. PK070011400/LIENHANG INVERTER BOARD............................................. 14
A. Description.................................................................................................................................................................14
B. Electrical characteristics ............................................................................................................................................14
C. Connector locations ...................................................................................................................................................15
D. Connector pin Assignment.........................................................................................................................................15
6. AC Adapter (LSL9901B12320)............................................................................ 16
A. Quick specification review ........................................................................................................................................16
7. CIRCUIT DESCRPTION .................................................................................... 16
A. Display-Controller .....................................................................................................................................................16
B. Circuit of Plug and Play.............................................................................................................................................16
C. Power Regulator ........................................................................................................................................................16
8. Introduction ........................................................................................................... 17
A. Front Panel Control and Led......................................................................................................................................17
B. Rear Panel connector Input Signals ...........................................................................................................................18
C. Rear Panel Cable and Connector ...............................................................................................................................18
9. TROUBLESHOOTING........................................................................................ 19
A. Main Procedure..........................................................................................................................................................19
Appendix A: Parts Lists ----------------------------------------------------------------------------------------
24
Appendix B: Display Unit Assembly ------------------------------------------------------------------------29
Appendix C: P.C.B.A Assembly ------------------------------------------------------------------------------
39
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1. ELECTRICAL REQUIREMENTS
A. LCD Panel Specification
Display: 17 inch (17” viewable image size): active matrix: thin film transistor
(TFT): liquid crystal display (LCD): 0.264 mm dot pitch: R.G.B.
Vertical stripe 200 cd//m2 white luminance, typical: 200:1 contrast
ratio, Min.
Compatibility: 640 x 350: VGA-350
720 x 400: VGA text
640 x 480: VGA, 60Hz to 75 Hz vertical refresh rate
800 x 600: 56Hz to 75 Hz vertical refresh rate
1024 x 768 non-interlaced: 60Hz to 75 Hz vertical refresh rate
1280 x 1024 non-interlaced: 60Hz to 75 Hz vertical refresh rate
Synchronization
Frequencies:
Horizontal: 24 kHz to 80 kHz
Vertical: 56 Hz to 75 Hz
Pixel Frequency: 21 Mhz 135 Mhz
Resolution: Horizontal: 1280 dots
Vertical: 1024 lines
Active Display
Area:
Horizontal: 337.92 mm
Vertical: 270.34 mm
Viewing Angles: Up 40deg down 80deg (TYP)
Left 60deg, Right 80deg (TYP)
CR ≥10
Display Colors: 16,777,216 (with FRC)
Power Supply: AC 100 to 240V worldwide input, 50 / 60Hz
Power Consumption: Typical:50W on mode +10 / -25%
Environmental: Operating temperature: 0ºC to 50ºC
Storage temperature: -20ºC to 65ºC
Relative Humidity: 20%~80%
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B. CONTROLS
B-1 Control panel (monitor front panel)
1. Power LED
2. Adjust decrease.
3. Adjust increase.
4. Function select counter-clockwise.
5. Function select clockwise.
6. Power ON/OFF switch, push to ON and push to OFF. (toggle switch)
7. Ear phone jack.
8. Volume Control.
C. Power Management
C-1 Power Management
1. Meet VESA DPMS proposal
2. Power Consumption
Meet VESA DPMS Proposal
On mode 54 Wmax Green
Stand-by 5 Wmax Yellow
Suspend 5 Wmax Yellow
Off mode 5 Wmax Yellow
DC power off 5 Wmax Dark
disconnection 5 Wmax
Dark (DC power off)
Yellow (DC power
on)
 Power saving states are measured with speakers attached but not worked.
 The recovery time from stand by /suspend/off mode to on mode is 3 seconds maximun.
C-2 Power Consumption
Meet VESA DPMS Proposal
On mode 54 Wmax
Stand-by 5 Wmax
Suspend 5 Wmax
Off mode 5 Wmax
DC power off 5 Wmax
disconnection 5 Wmax
1. Measured from AC input end of AC power adapter.
2. Power saving states are measured with speakers attached but not worked.
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D. Display Modes FOR Inspections
D-1 Supported Timing
TIMING
FH(KH
Z)
SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL
FV(HZ) POLARITY (DOT/LINE) (DOT/LINE) WIDTH PORCH PORCH FOREQ.(MHZ)
(DOT/LINE) (DOT/LINE) (DOT/LINE)
640x350 31.469
＋ 800 640 96 16 48 25.175
VGA-350 70.087
－ 449 350 2 37 60
640x400 24.83
－ 848 640 64 64 80 21.05
NEC PC9801 56.42 － 440 400 8 7 25
640x400 31.5
－ 800 640 64 16 80 25.197
NEC PC9821 70.15 － 449 400 2 13 34
640x480 31.469
－ 800 640 96 16 48 25.175
VGA-480 59.94
－ 525 480 2 10 33
640x480 35
－ 832 640 40 24 128 31.5
APPLE MAC-
480
66.67 － 520 480 3 9 28
640x480 37.861
－ 832 640 40 16 120 31.5
VESA-480-72Hz 72.809 － 520 480 3 1 20
640x480 37.5
－ 840 640 64 16 120 31.5
VESA-480-75Hz 75 － 500 480 3 1 16
720x400 31.469
－ 900 720 108 18 54 28.322
VGA-400-TEXT 70.087 ＋ 449 400 2 12 35
832x624 49.725
－ 1152 832 64 32 224 57.2832
APPLE MAC-
800
74.55 － 667 624 3 1 39
800x600 35.156
＋ 1024 800 72 24 128 36
SVGA 56.25
＋ 625 600 2 1 22
800x600 37.879
＋ 1056 800 128 40 88 40
VESA-600-60Hz 60.317 ＋ 628 600 4 1 23
800x600 48.077
＋ 1040 800 120 56 64 50
VESA-600-72Hz 72.188 ＋ 666 600 6 37 23
800x600 46.875
＋ 1056 800 80 16 160 49.5
VESA-600-75Hz 75 ＋ 625 600 3 1 21
1024x768 48.363
－ 1344 1024 136 24 160 65
XGA 60.004
－ 806 768 6 3 29
1024x768 53.964
＋ 1328 1024 176 16 112 71.664
COMPAQ-XGA 66.132 ＋ 816 768 4 8 36
1024x768 56.476
－ 1328 1024 136 24 144 75
VESA-768-70Hz 70.069 － 806 768 6 3 29
1024x768 60.023
＋ 1312 1024 96 16 176 78.75
VESA-768-75Hz 75.029 ＋ 800 768 3 1 28
1024x768 60.24
－ 1328 1024 96 32 176 80
APPLE MAC-
768
75.02 － 803 768 3 3 29
1280x1024 64
＋ 1688 1280 112 48 248 108
VESA-1024-
60Hz
60 ＋ 1066 1024 3 1 38
1280x1024 80
＋ 1688 1280 144 16 248 135
VESA-1024-
75Hz
75 ＋ 1066 1024 3 1 38
If the input timing is not a supported timing listed above but within the supported frequency range
(Horizontal:80KHz,Vertical:75Hz),this monitor will select a closest mode instead,But the display
quality may not be optimized.
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2. VL-710 DISPLAY CONTROL BOARD
A. Description
The VL-710 display control board is design to directly convert the analog RGB signals from
standard VGA display card to optimum LCD timing signals so as to construct a high display
quality LCD monitor.
B. Features
• On board embedded micro-processor to detect display timings and control user functions.
• Using MXIC design to generate optimum LCD timings.
• Using E
2
PROM to memorize every adjusted parameter.
• support up to 22 display modes from VGA to SXGA.
• Offer full screen expansion function on non-SXGA mode (automatic).
• flexible color temperature selection function including 9300,6500 and user mode.
• Support OSD functions.
• Support VESA DPMS function.
• Support DDC1/2B functions.
• Support 5 languages for OSD description.
• The longest time for mode change is 3 seconds.
C. BLOCK DIAGRAM
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D. Connector Locations
E. Connector Type
Location Type Maker Number of pins
CN1 DZ11A91-L8 P1.524 FEMALE 15
JP1 85205-1200 ACES 12
J1 85205-1400 ACES 4
J2 85205-1000 ACES 10
J3 E&T 46213-4001D-40P-P1.25 E&T 40
F. Connector pin assignment
F-1 CN1
Pin NO. Signal Comment
1 R-Video Red Video Input.
2 G-Video Green Video Input.
3 B-Video Blue Video Input.
4 N. C.
5 PCDETECT PCDETECT Input.
6 Ground Ground.
7 Ground Ground.
8 Ground Ground
9 5VCC DDC Power Input.
10 Ground Ground.
11 NC
12 SDA DDC 1/2B
13 HS Horizontal Sync Input.
14 VS Vertical Sync Input.
15 SCL DDC 2B
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F-2 CN7
Terminal No. Symbol Function
1, 3, 5, 7 VDD 5V POWER SUPPLY
2 TXE0- LVDS EVEN OUTPUT DATA PAIRS
4 TXE0+ LVDS EVEN OUTPUT DATA PAIRS
6 TXE1- LVDS EVEN OUTPUT DATA PAIRS
8 TXE1+ LVDS EVEN OUTPUT DATA PAIRS
10 TXE2- LVDS EVEN OUTPUT DATA PAIRS
12 TXE2+ LVDS EVEN OUTPUT DATA PAIRS
14 TXECLK- LVDS EVEN OUTPUT DATA PAIRS
16 TXECLK+ LVDS EVEN OUTPUT DATA PAIRS
18 TXE3- LVDS EVEN OUTPUT DATA PAIRS
20 TXE3+ LVDS EVEN OUTPUT DATA PAIRS
22 TXO0- LVDS ODD OUTPUT DATA PAIRS
24 TXO0+ LVDS ODD OUTPUT DATA PAIRS
26 TXO1- LVDS ODD OUTPUT DATA PAIRS
28 TXO1+ LVDS ODD OUTPUT DATA PAIRS
30 TXO2- LVDS ODD OUTPUT DATA PAIRS
32 TXO2+ LVDS ODD OUTPUT DATA PAIRS
34 TXOCLK- LVDS ODD OUTPUT DATA PAIRS
36 TXOCLK+ LVDS ODD OUTPUT DATA PAIRS
38 TXO3- LVDS ODD OUTPUT DATA PAIRS
40 TXO3+ LVDS ODD OUTPUT DATA PAIRS
9, 11, 13, 15 GND Ground
17, 19, 21, 23 GND Ground
25, 27, 29, 31 GND Ground
33, 35, 37, 39 GND Ground
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F-3 CN3
Pin NO. Signal Comment
1,2,3 12 VCC Inverter Power Output.
4 BLON Bright Light ON/OFF.
5,6,10,11,12 GND GND
7,8 5 VCC Inverter Power Output.
9 BRIGHT Brightness Adjustment.
F-4 CN8
Pin NO. Signal Comment
1 12 VCC 12 VCC Power Input
2 5 VCC 5V Power Input
3 GND GND
4 GND GND
F-5 CN4
Pin NO. Signal Comment
1 MUTE Volume adjust power input
2 LED-Y Power saving mode
3 LED-G Monitor is ON
4 GND GND
5 KEY-UP Function select counter-clockwise key
6 KEY-DOWN Function select counter-clockwise key
7 KEY-R Adjust up key
8 KEY-L Adjust down key
9 KEY-POWER Power ON/OFF key
10 GND GND
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3. VK-715 Control Panel and Audio Board
E. Description
The VK-715 is designed to offer a user interfaced control panel which passes and receives signals to and from
VL-710 display control board. Also there is a stereo audio amplifier to drive a pair of speakers. When in power
saving mode the audio circuit can be turned off by the control signal from VL-710 board.
F. Electrical characteristics (Tamb=25°)
Audio amplifier(USE Panasonic VP-7723A Audio Analyzor.
Spec.
Item Audio Input Freq.
Min. Typ. Max.
Comment
Input Voltage(V) 8.4 9 9.6
Input Current(m A) - 500 800
Audio Voltage Gain 50m Vrms 1KHz - - 14d B Volume Max.,load 8 Ω
Frequency Response 100m Vrms 50Hz-20KHz -3dB - +3d B Volume Max.,load 8 Ω
Signal to Noise ratio 500m Vrms 1KHz - - -70d B Volume Max.,load 8 Ω
Cross talk 100m Vrms 1KHz - - -60d B Volume Max.,load 8 Ω
Distortion 500m Vrms 1KHz - - 1% Volume Max.,load 8 Ω
Output Watt. 500m Vrms 1KHz - - 0.5W Volume Max.,load 8 Ω
Volume Control - - - Analog
Speakers⇒model:4Ø28CP
2X2w speaker; Impedance 8 Ωat 1KHz
G. Connector and Switch Locations
H. Connector and Switch Locations
Location Type Maker Number of pins
J1 96113-0813 E&T 8
J2 SCJ-0348-C SC 9
J3 87502-0200 ACES 2
J4 87502-0200 ACES 2
J5 96113-1013 E&T 10
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I. Connector pin Assignment
E-1 J1
Pin NO. Signal Comment
1 VOL Audio Volume Adjust
2,5,8 GND GND
3 OUTL - Left side audio signal
4 OUTL + Left side audio signal
6 OUTL - Right side audio signal
7 OUTL + Right side audio signal
E-2 J5
Pin NO. Signal Comment
1 MUTE Volume adjust power input.
2 LED-Y Power saving mode.
3 LED-G Monitor on mode.
4,10 GND
5 KEY-UP Function select up to VL-515
6 KEY-DOWN Function select down to VL-515
7 KEY-R Function select right to VL-515
8 KEY-L Function select left to VL-515
9 KEY-PWR Power ON/OFF signal to VL-515
E-3 J3 and J4
Pin NO. Signal Comment
1 LO (RO) Speaker out
2 OUTL- (OUTR-) Speaker out
J. J2
Pin NO. Signal I/O Comment
1 GND Ground
2 LI 2 Earphone out L
3 RI 2 Earphone out R
4 LI 1 Earphone out L
5 LO Speaker out L
6 NC No connector
7 RI 1 Earphone out R
8 RO Speaker out R
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K. Switch definition
Location Definition
S1 Power ON/OFF
S2 Function select by clockwise direction
S3 Function select by counter-clockwise direction
S4 Adjust up
S5 Adjust down
L. LED definition
Location Definition
D1 Green for ON mode; Yellow for OFF mode; yellow for Power Saving mode; Dark for
DC power OFF mode.
M. Variable resistor
VR1: Volume control, clockwise for increasing; counter-clockwise for decreasing
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4. DC/DC POWER and Audio CKT VM-517
A. Input:
12V ±5% from adapter (LSE 9901B1260)
B. Output:
ITEM Output Voltage Max Load. Min Load Tolerance Ripple & Noise(max)
VCC +5V 1.9A 0.25A
±5% 150mVpp
C. Efficiency: 80% min at Maximum Load.
D. Connector Locations
E. Connector type for VM-515
Location Type Maker Number of pins
J801 DC-IN SC 2
J3 SCJ-0345-1-X-S SC 3
J2 96113-0803 E&T 8
J802 B4B-XH-A JST 4
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F. Connector pin Assignment
F-1 J801 DC 12V Input
Pin No Signal Comment
Pin 1 +12V From adapter output cable
Pin 2 GND From adapter output cable
F-2 J802 FOR I/F CKT
Pin No Signal Comment
Pin 1 +12V From adapter +12V power
Pin 3, 4 GND GND
Pin 2 +5V Supply for I/F CKT
F-3 J3 FOR Audio input
Pin No Signal Comment
Pin 1 GND GND
Pin 2 Audio IN (1) From Audio output (1)
Pin 3 Audio IN (2) From Audio output (2)
F-4 J2 TO Speaker CKT
Pin No Signal Comment
Pin 2, 5, 8 AGND GND
Pin 1 Volume voltage To adjustment volume
Pin 3 Audio out L- From AMP L-
Pin 4 Audio out L+ From AMP L+
Pin 6 Audio out R- From AMP R-
Pin 7 Audio out R+ From AMP R+
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5. PK070011400/LIENHANG INVERTER BOARD
A. Description
The LI-2098 Inverter board is designed for lighting up the back-lights of LCD module.
B. Electrical characteristics
B-1 FOR FUJITSU PANEL (FLC44SXC8V)
MIN. TYP. MAX. COMMENT
INPUT VOLTAGE 11.4V 12.0V 12.6V 12V±5%
INPUT CURRENT -------- 2.1A _ Vin=12V,Vbrite=3.7
5V
Normal BACKLIGHT
VOLTAGE -------- 700 Vrms. --------
LAMP CURRENT
4m 6mArms 7m Each CCFL
DRIVING
FREQUENCY 40KHz 50KHZ 60KHz
EFFICIENCY -------- 78% --------
Vin = 12V,max
brightness
PWM dimming
frequency 160Hz 180Hz 200Hz
Vin ON/OFF
sequence -------- 0.5S --------
OLP TIME -------- 1S _ Open lamp
protection time
BRIGHTNESS
RANGE 30% -------- 100%
Brightness control 0V _ 3.75V 3.75V, brightness
max
Brightness 170 cd/m2220cd/m2 _
Strike voltage at 0°C _ _ 1500 Vrms
Strike voltage at 25°C _ 1300 Vrms 1500 Vrms
Operating life time 50,000 hrs _ _ (note)
Note:
Life time (hr) can be defined as the time in which it continues to operate under the condition:
Ta=25±2°C, IL =12 mArms until one of the following event occurs:
1. When the brightness becomes 50 %
2. When the startup voltage (Vs) at 0°C becomes higher than the maximal value of Vs specified above.
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C. Connector locations
D. Connector pin Assignment
D-1 CN1(ACES, 85205-1200 12P)
Pin NO. Signal Comment
1,2,3 BP+ +12V
5,6,10,11,12 GND GND
4 BLT_ON Back-light ON/OFF control , high active(5V)
7 +5VS +5VS
9 BRITE BRITE Brightness (0-5V)control from I/F
0V for max. brightness
8 NC NC
D-2 CN2,CN3 (JST SM04(4.0)B-BHS-14P)
Pin NO. Signal Comment
1 HV High voltage for lamp
2 HV High voltage for lamp
3 NC NC
4 LV Low voltage (common)
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6. AC Adapter (LSL9901B12320)
A. Quick specification review
• Input voltage
Single phase, 50/60HZ, 100VAC to 240VAC ±10%
• Input current
1.5A (max), at 90VAC input and full load 0.75A (max), at 264 VAC input and full
load.
• Inrush current @ cold start
30A(0-peak)@ 110Vac ,50A(0-peak) @ 220Vac
• Output
Tolerance Output Current
Output Volt - MIN MAX
Volt Tolerance
+12Vdc ±5% 0A 5A 11.4~12.6Vdc
• Total output power: 60 Watt max.
• Efficiency
80% min. @115V/230VAC, maximum load.
• Dimension: 110Lx63Wx31H
7. CIRCUIT DESCRPTION
A. Display-Controller
The U6 is image processor. The functions of the CHIP support as below:
1. Hight quality image scalar
2. On screen display
3. Automatic image optimizer
B. Circuit of Plug and Play
Plug and play allows the serial communication of host PC and peripherals offering minimal
configurations to end users. This monitor supports DDC2B communication protocal.
C. Power Regulator
1. The U5 (APL5883) & U14(APL1085)are linear requlator that transfer input voltage from
5V to 3.3V.
2. The U7 (APL1117) is linear requlator that transfer input voltage from 5V to 2.5V.
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8. Introduction
A. Front Panel Control and Led
Front Panel Controls
Item Control Function
1 Stereo Speakers PC Audio Stereo output.
2 Speaker Volume Control Increase Volume - Turn the knob clock wise.
Decrease Volume - Turn the knob counter clock wise.
3
DC Power Switch
Press the power switch to switch the monitor ON/OFF.
4
DC Power-On Indicator
LED lights Green color --- Power is ON.
LED lights Yellow --- Monitor is in "Power Saving Mode".
LED is off --- Power is OFF.
5 Function Select Buttons Press either left or right control button for OSD (On Screen Display) menu
selection.
6 Adjustment Control Buttons Press the left button to decrease the OSD setting and press the right button to
increase the OSD setting.
7 External Headphone Jack The monitor speakers will be disabled when using an external headphone or
external speakers.
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B. Rear Panel connector Input Signals
C. Rear Panel Cable and Connector
Item Cable / Connector Function
1 Signal Connector Connectors the video cable
2 Power Connector Connectors the adapter cable
3 Audio connector Connector the audio cable
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9. TROUBLESHOOTING
A. Main Procedure
CM67B
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Power Circuit Troubleshooting
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