Acer AL1722 AL1722 Service Guide - Page 56

MCU/ Key Board Connector 2 VCPU VCPU VCPU U603 MAX810STR (NC) 3 VCC RST 2 R643 NC 1 GND Reset Circuit C605 0.1uF U602 1 2 3 4 A0 A1 A2 GND VCC WP SCL 8 7 6 5 SDA 24C16 VCPU R642 NC C603 + 10uF/16V D601 LL4148 R603 4 10K` 1/16W R604 R605 R615 R641 10K` 1/16W 10K` 1/16W 10K` 1/16W 0` 1/16W R601 R602 C601 0.1uF 10K` 1/16W 10K` 1/16W C602 22pF U601 Y601 35 EA/VP 20MHz 21 XTAL1 C604 22pF 20 XTAL2 10 RESET INT R608 R609 100` 1/16W 100` 1/16W 12 14 15 P4.3 INT0/P3.2 INT1/P3.3 33 32 2 3 4 ALE/P PSEN P1.0 P1.1 5 6 7 8 P1.2 P1.3 P1.4 P1.5 9 P1.6 P1.7 W78E65P-40 22 VSS VCC 44 RP601 10K` 1/16W 43 P0.0 P0.1 P0.2 P0.3 42 41 40 39 P0.4 38 P0.5 P0.6 P0.7 37 36 24 P2.0 P2.1 P2.2 P2.3 P2.4 P2.5 P2.6 P2.7 25 26 27 28 29 30 31 16 T0/P3.4 T1/P3.5 P3.6/WR P3.7/RD 17 18 19 13 P3.1/TXD 11 P3.0/RXD 7 AUDIO_SD R626 10K` 1/16W C612 0.1uF 3 ST_DET1 3 ST_DET2 2 onAUDIO 2 onPANEL_12V 5 4 6 3 7 2 8 1 4 3 2 1 5 R606 R607 R610 R611 R634 R635 6 7 8 R637 R638 R639 RP602 10K` 1/16W 10K` 1/16W 10K` 1/16W 10K` 1/16W POWER MENU RIGHT LEFT AUTO LED_B LED_O LED_G 10K` 1/16W 10K` 1/16W NC NC 100` 1/16W 100` 1/16W VCPU R636 100` 1/16W HWRESET 4 onPANEL_5V/3.3V 2 onBACKLITE 2 CSZ 4 SCL 4 SDA 4 AD0 4 AD1 4 AD2 4 AD3 4 DDC_DAT 3 DDC_CLK 3 TXD 3 RXD 3 VCPU CN603 1 2 3 4 NC R612 NC R613 10K` 1/16W C613 0.1uF VCPU 4.7K` 1/16W R619 LED_O 1 2 R618 120` 1/16W Q602 PMBS3906 3 CN604 VCPU R617 120` 1/16W LED_GRN 1 2 K_RIGHT 3 4 K_AUTO 5 6 K_POWER 7 8 LED_BLUE 9 10 EAR_R 11 12 OUT_R 13 14 4.7K` 1/16W R616 LED_G 1 2 Q601 PMBS3906 CONN CN602 3 LED_GRN 1 9 RIGHT R622 0` 1/16W K_RIGHT 3 4 AUTO R620 0` 1/16W K_AUTO 5 6 POWER R621 0` 1/16W K_POWER 7 8 LED_ORANGE 2 10 EAR_R 11 12 C608 C606 C607 OUT_R 13 14 0.001uF 0.001uF 0.001uF CONN(NC) LED_ORANGE K_LEFT K_MENU EAR_L OUT_L LED_BLUE K_LEFT K_MENU EAR_L OUT_L C610 C609 0.001uF 0.001uF R640 R623 R624 C614 1uF VCPU 470` 1/16W 0` 1/16W 0` 1/16W LEFT MENU 3 2 R628 0` 1/16W 4.7K` 1/16W R629 1Q603 PMBS3906 LED_B 7 EAR_R 7 OUT_R 56 EAR_L 7 OUT_L 7