Acer AL2021 AL2021 Service Guide - Page 42

DVI CONNECTOR CN8 25 RX2RX2+ GND RX4RX4+ SCL SDA VS 1 2 3 4 5 6 7 8 RX1- 9 10 RX1+ 11 GND RX3RX3+ 5V 12 13 14 15 GND HP 16 RX0- 17 18 RX0+ GND RX5RX5+ 19 20 21 22 GND 23 RXC+ RXC- 24 RED GRN BLU HS GND C1 C2 C3 C4 C5 26 GND DVI-I RX2-IN RX2+IN DVISCL DVISDA RX1-IN RX1+IN DVI_5V R115 HOT_PLUG RX0-IN RX0+IN 10K/6 RXC+IN RXC-IN GND TP312-TP327 are the only through hole parts as GND test Probes on Board. Spread these TH TPs evenly across the Board. The rest of TPs are Surface mount DVI Test Points are just SMTobservation points on the traces with no stub R111 R112 R99 R107 10K/6 10K/6 100/6 100/6 U12 1 8 2 3 4 A0 A1 A2 GND VCC WP SCL SDA 7 6 5 24AA02 GND DIGITAL DDC GND GND DVI_5VD9 DAN202U 1 +5V 2 3 VGA_5V D8 1 DAN202U +5V 2 VGA_SCL VGA_SDA R101 100/6 VGASCL R102 100/6 VGASDA CN7 15 14 13 12 11 VGA_5V 5 10 4 9 3 8 2 7 1 6 DB15 HD GND A-BLUE A-GREEN A-RED C98 0.1uF/6 3 R108 100K/6 RX2- 4 RX2+ 4 RX1- 4 RX1+ 4 RX0- 4 RX0+ 4 RXC+ 4 RXC- 4 DVI_CAB 4 GND DVI_SCL 4 DVI_SDA 4 R88 R90 R91 R93 20/6 1% 20/6 1% 20/6 1% 20/6 1% GND R106 0/6/NS C89 0.01uF/6 C90 0.01uF/6 C91 0.47uF/6 C92 0.01uF/6 C69 0.01uF/6 C94 0.01uF/6 C93 0.01uF/6 VGA_SCL 4 VGA_SDA 4 VGA_CAB 4 BLUE+ 4 BLUE- 4 SOG 4 GREEN+ 4 GREEN- 4 RED+ 4 RED- 4 75/6 1% 75/6 1% 75/6 1% R89 56/6 1% R83 56/6 1% R92 56/6 1% R100 R104 R103 U10 1 2 A0 3 4 A1 A2 GND VCC WP SCL SDA 24AA02 GND ANALOG DDC C88 R86 0.1uF/6 10K/6 8 7 GND 6 5 GND 3 D7 5.6V 3 R98 10K/6 D6 5.6V 1 1 GND GND A-HS A-VS A-VS R97 A-HS R96 GNDGNDGND Near VGA pins 22/6 R95 0/6 22/6 3 3 C108 47p/6 C100 47p/6 5.6V 5.6V R105 510/6/NS D5 D4 1 1 GND RGB SIGNAL GNDs at 2-mm from respective RGB series Capacitors GNDGNDGND R94 0/6 U11 1 2 1A 3 4 1Y 2A 2Y 5 6 3A 8 9 3Y 4Y 4A 6A 13 12 6B 5A 5B 11 10 VCC GND 14 7 SN74LVC14A/NS C107 0.1uF/6 GNDGND AHS 4 AVS 4 +3.3V PROJECT : L0T Quanta Computer Inc. Title 03. Graphic Inputs Size Date: Document Number 03. Graphic Inputs Friday, July 11, 2003 L0T Rev 1A Sheet 3 of 8 - 42 -