AL1716v Service Guide
Page 45
D704 SMAL140 P.S: The 1N4148 Vf=0.7V~1V can not meet LDO spec. For RSDS and Panel VCC=12V VLCD 5 +5V +3V3 R721 0` 1/16W R722 NC R727 10K` 1/16W 4 on_Panel_12V +5V +5V +12V VLCD_12V R718 NC/10K R729 ... you want to SSM12L(schottky diode). The BAT42, Vf is about 200mA and 1.8V is OK but the If=200mA(forward current) can 't meet current spec. So when system power on, the system loading is about 400mA (3.3V is about 200mA), So D35 changed from 1N4148(or BAT42) to suppoert DDC...
D704 SMAL140 P.S: The 1N4148 Vf=0.7V~1V can not meet LDO spec. For RSDS and Panel VCC=12V VLCD 5 +5V +3V3 R721 0` 1/16W R722 NC R727 10K` 1/16W 4 on_Panel_12V +5V +5V +12V VLCD_12V R718 NC/10K R729 ... you want to SSM12L(schottky diode). The BAT42, Vf is about 200mA and 1.8V is OK but the If=200mA(forward current) can 't meet current spec. So when system power on, the system loading is about 400mA (3.3V is about 200mA), So D35 changed from 1N4148(or BAT42) to suppoert DDC...
AL1716W Service Guide
Page 3
...) x 100% Pre-Defined Timing Plug and Play Power Saving Input Signal Counter tolerance Normal Operation Standby, Suspend, Active Off Power Off Front Panel Buttons SPEC H 31kHz ~ 83kHz V 56Hz ~ 76Hz 205MHz 0.7Vp-p 75Ω Separate SYNC, Composite Sync 50Ω AC 100V ~ AC 220V ±...90VAC~240VAC) POWER, MENU, SELECT, + , - 35% typical 18 VESA DDC2B DPMS H ±1kHz, V ±1 Hz The use of the monitor. 2 ACER AL1716W Go to the interface board. 1.2 General Requirements: 1.2.1 Test Condition Brightness level at max & contrast level at default full white pattern test mode following...
...) x 100% Pre-Defined Timing Plug and Play Power Saving Input Signal Counter tolerance Normal Operation Standby, Suspend, Active Off Power Off Front Panel Buttons SPEC H 31kHz ~ 83kHz V 56Hz ~ 76Hz 205MHz 0.7Vp-p 75Ω Separate SYNC, Composite Sync 50Ω AC 100V ~ AC 220V ±...90VAC~240VAC) POWER, MENU, SELECT, + , - 35% typical 18 VESA DDC2B DPMS H ±1kHz, V ±1 Hz The use of the monitor. 2 ACER AL1716W Go to the interface board. 1.2 General Requirements: 1.2.1 Test Condition Brightness level at max & contrast level at default full white pattern test mode following...
AL1716W Service Guide
Page 9
8 ACER AL1716W Go to measure the maximum and minimum luminance in front of the visible surfaces. and 1500 lux. It shall be at least 30 minutes ... after at the LCD panel is between spots of monitor after at least 15mm apart. 2.6 Optical Characteristics: 2.6.1 Brightness uniformity: The uniformity is determined by panel spec, therefore, we don't define the specification for the smaller spot. The contrast ratio is defined as below . CR=(Max. full black luminance) CR = 500: 1(ty...
8 ACER AL1716W Go to measure the maximum and minimum luminance in front of the visible surfaces. and 1500 lux. It shall be at least 30 minutes ... after at the LCD panel is between spots of monitor after at least 15mm apart. 2.6 Optical Characteristics: 2.6.1 Brightness uniformity: The uniformity is determined by panel spec, therefore, we don't define the specification for the smaller spot. The contrast ratio is defined as below . CR=(Max. full black luminance) CR = 500: 1(ty...