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Acer AL2002 AL2002 Service Guide - Page 23

Power, Ddc Interface, Scaler Gm5766h, Panel Interface

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11.3 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_TOP 1 2 3 3.VGA & DDC INTERFACE VCC5V A VCC5V RIN GNDR GIN GNDG BIN GNDB RIN GNDR GIN GNDG BIN GNDB HS_IN VS_IN HS_IN VS_IN B DDC_SCL_VGA DDC_SDA_VGA DDC_SCL_VGA DDC_SDA_VGA DDC_WPn VGA_DETn DDC_WPn VGA_DETn 4 5 6 5.SCALER GM5766H RIN GNDR GIN GNDG BIN GNDB HS_IN VS_IN RIN GNDR GIN GNDG BIN GNDB HS_IN VS_IN DDC_SCL_VGA DDC_SDA_VGA DDC_WPn VGA_DETn DDC_SCL_VGA DDC_SDA_VGA DDC_WPn VGA_DETn C 3.VGA & DDC INTERFACE 4.DVI & DDC INTERFACE D DDC_WPn DDC_WPn DVI_DETn DVI_DETn VCC5V RX2+ VCC5V RX2+ RX2- RX2- RX1+ E RX1+ RX1- RX1RX0+ RX0+ RX0- RX0- RXC+ RXC+ RXC- RXC- DDC_SCL_DVI F DDC_SCL_DVI DDC_SDA_DVI DDC_SDA_DVI 4.DVI & DDC INTERFACE G DVI_DETn DVI_DETn RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC- RX2+ RX2RX1+ RX1RX0+ RX0RXC+ RXC- DDC_SCL_DVI DDC_SDA_DVI DDC_SCL_DVI DDC_SDA_DVI AUDIO_EN VOLUME 1 2 3 4 5 6 7 8 9 CH3P_LV_E CH3N_LV_E CH2P_LV_E CH2N_LV_E CH1P_LV_E CH1N_LV_E CH0P_LV_E CH0N_LV_E CLKP_LV_E CLKN_LV_E CH3P_LV_O CH3N_LV_O CH2P_LV_O CH2N_LV_O CH1P_LV_O CH1N_LV_O CH0P_LV_O CH0N_LV_O CLKP_LV_O CLKN_LV_O CH3P_LV_E CH3N_LV_E CH2P_LV_E CH2N_LV_E CH1P_LV_E CH1N_LV_E CH0P_LV_E CH0N_LV_E CLKP_LV_E CLKN_LV_E CH3P_LV_O CH3N_LV_O CH2P_LV_O CH2N_LV_O CH1P_LV_O CH1N_LV_O CH0P_LV_O CH0N_LV_O CLKP_LV_O CLKN_LV_O LED_B LED_A LBADC_IN1 LBADC_IN2 NC LED_B LED_A LBADC_IN1 LBADC_IN2 BKLT_ADJ BKLT_EN PANELVCC_EN BKLT_ADJ BKLT_EN PANELVCC_EN VCC5V VCC3V3 VCC1V8 VCC5V VCC3V3 VCC1V8 5.SCALER GM5766H 7 8 9 10 11 12 13 6.KEY & PANEL INTERFACE CH3P_LV_E CH3N_LV_E CH2P_LV_E CH2N_LV_E CH1P_LV_E CH1N_LV_E CH0P_LV_E CH0N_LV_E CLKP_LV_E CLKN_LV_E CH3P_LV_E CH3N_LV_E CH2P_LV_E CH2N_LV_E CH1P_LV_E CH1N_LV_E CH0P_LV_E CH0N_LV_E CLKP_LV_E CLKN_LV_E A B CH3P_LV_O CH3N_LV_O CH2P_LV_O CH2N_LV_O CH1P_LV_O CH1N_LV_O CH0P_LV_O CH0N_LV_O CLKP_LV_O CLKN_LV_O CH3P_LV_O CH3N_LV_O CH2P_LV_O CH2N_LV_O CH1P_LV_O CH1N_LV_O CH0P_LV_O CH0N_LV_O CLKP_LV_O CLKN_LV_O VCC5V C LED_B LED_A LBADC_IN1 LBADC_IN2 LED_B LED_A LBADC_IN1 LBADC_IN2 NC VCC5V VCC3V3 VLCD VCC3V3 VLCD D 6.KEY & PANEL INTERFACE 2.POWER E BKLT_ADJ BKLT_EN PANELVCC_EN BKLT_ADJ BKLT_EN PANELVCC_EN VCC5V VCC5V VCC3V3 VCC3V3 VCC1V8 VCC1V8 VLCD F VLCD VDD VDD 2.POWER G 10 11 12 13 PCB No. 6832174000P01 ACER AL2002W 22 Go to cover page

Section	Page
acer_lcd_al2002w_SM061206V0_ch1_11.pdf	1
Cover Page	1
Important Safety Notice	2
1. Product Overview	3
2. GENERAL REQUIREMENTS	3
2.1 Test Condition	3
2.2 Test Equipment	4
3. ELECTRICAL RELATED INFORMATION	4
3.1. Product Block Diagram	4
3.2. Product Specification	5
3.3. Interface Connectors	5
3.3.1. Power Connector and Cables	5
3.3.2. Signal Connectors and Cable	6
3.3.3. Connector Pin Assignment	6
3.4. Input Signals (Analog RGB Signal Input)	7
3.4.1. Video Input Signal Ranges	7
3.4.2. Video Signal Amplitudes	8
3.4.3. Video Signal Termination Impedance	8
3.4.4. Synchronization (Sync) Signals	8
3.4.5. Sync Signal Levels	8
3.4.6. Sync Signal Loading	8
3.4.7. Abnormal Signal Immunity	8
3.5. Interface Boards (Digital TMDS Input)	9
3.5.1. Introduction	9
3.5.2. Video Signal Amplitudes	9
3.5.3. Video Signal Termination Impedance	9
3.5.4. Signal Connector (DVI-D 24 pin)	9
3.6. User Controls and Indicators	9
3.6.1. Power On / Off Switch	9
3.6.2. Power Indicator LED	9
3.6.3. On-Screen Display	9
3.7. Monitor Modes and Timing Capability	10
3.7.1. Format and Timing	10
3.7.2. Factory Assigned Display Modes	10
3.7.3. Mode Recognition Pull-in	10
3.7.4. User Display Modes	10
3.8. Controller Requirements	11
3.8.1. General Requirements	11
3.8.2. Video Stretching	11
3.8.3. Panel Timing and Interface	11
3.9. DC - AC Inverter Requirements	11
3.10. Power Supply Requirements	11
3.11. Display Communications Channel	12
4. FLAT PANEL	13
4.1. General Requirements	13
4.2. Panel Timings	13
4.3. Polarizer Hardness	13
4.4. Backlight Requirements	13
4.4.1. General Requirements	13
4.4.2. Lamps Startup Time	13
4.5. Defects	14
4.5.1. Visual Inspection	14
4.5.2. Display Degradation	14
4.5.3. Light Leakage	14
4.5.4. Allowable Defects	14
4.5.5. Defect Terminology	14
4.5.6. Smudges, Streaks and Smears	15
4.5.7. LCD Inspection	15
5. Optical Characteristics	15
5.1. Brightness uniformity	15
5.1.1. Panel 9 test points	15
5.1.2. Brightness Uniformity	15
5.2. Contrast ratio (CR)	16
5.3. Response time	16
5.4. Viewing angles	16
5.5. Chromaticity	17
5.6. Brightness	17
6. Environmental Requirements	17
6.1. Temperature Ranges	17
6.2. Humidity	17
6.3. Altitude	17
6.4. Vibration Test Procedure	18
6.4.1. Vibration System	18
6.4.2. Fixturing	18
6.4.3. Test Axes	18
6.4.4. Random Vibration Spectrum	18
6.4.5. Acceptance Criteria	18
7. RGB settings	18
8. Color grayscale linearity	18
9. PACKING EXPLODED DRAWING	19
10. PRODUCT EXPLODED DIAGRAM	20
11. Schematics and Layouts	21
11.1 ACER_AL2002W (T20BAUW-G1)_BLOCK DIAGRAM	21
11.2 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_POWER BOARD	22
11.3 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_TOP	23
11.4 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_POWER SOURCES CIRCUIT	24
11.5 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_VGA&DDC INTERFACE	25
11.6 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_DVI&DDC INTERFACE	26
11.7 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_SCALER GM5766H	27
11.8 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_KEY & PANEL INTERFACE	28
11.9 ACER_AL2002W (T20BAUW-G1)_SCHEMATICS_KEYPAD	29
11.10 ACER_AL2002W (T20BAUW-G1)_LAYOUTS_POWER BOARD	30
11.11 ACER_AL2002W (T20BAUW-G1)_LAYOUTS_INTERFACE BOARD	31
11.12 ACER_AL2002W (T20BAUW-G1)_LAYOUTS_KEYPAD	32
appendix_4_spare_parts_4092531143P.pdf	49

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