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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