Acer AL1751 AL1751 Service Guide - Page 49

3 VCPU VCPU VCPU U404 MAX810STR 3 VCC RST 2 1 GND Reset Circuit VCPU C435 0.22uF U403 1 2 3 4 A0 A1 A2 GND VCC WP SCL SDA 8 7 6 5 AT24C16N-10SC-2.7 R409 C444 C431 10K` 1/16W 0.1uF 10K` 1/16W C432 22pF X402 + C433 10uF/16V 20MHz C434 22pF U402 35 EA/VP 21 XTAL1 20 XTAL2 10 RESET D401 R411 LL4148-GS08 10K` 15/16W INT R413 10K` 1/16W R414 R416 10K` 1/16W R417 R418 100` 1/16W R421 NC R423 10K` 1/16W R425 10K` 1/16W 100` 1/16W 100` 1/16W 12 14 15 P4.3 INT0/P3.2 INT1/P3.3 33 32 2 3 4 5 6 7 8 9 ALE/P PSEN P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 W78E65P-40 22 VSS VCC 44 P0.0 43 42 P0.1 P0.2 P0.3 P0.4 41 40 39 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 T0/P3.4 T1/P3.5 P3.6/WR P3.7/RD P3.1/TXD 16 17 18 19 13 11 P3.0/RXD 8 AUDIO_SD 8 AUDIO_MU R426 R429 10K` 1/16W 10K` 1/16W Standby Mute C437 0.1uF C438 0.1uF 4 ST_DET1 4 ST_DET2 4 5 3 6 2 7 1 8 5 6 7 8 RP401 RP402 10K` 1/161W0K` 1/16W 1 2 3 4 POWER ENTER RIGHT LEFT AUTO LED_O LED_B R410 R412 R415 10K` 1/16W 10K` 1/16W R419 R420 R422 R424 NC NC 100` 1/16W 100` 1/16W 100` 1/16W HWRESET 5 onPANEL_5V/3.3V 3 onBACKLITE 3 CSZ 5 SCL 5 SDA 5 VCPU AD0 5 AD1 5 AD2 5 AD3 5 DDC_DAT 4 DDC_CLK 4 TXD 4 RXD 4 R427R428 C436 0.1uF NC 10K` 1/16W R440 22K` 1/16W R441 10K` 1/16W DDC_WP 4 C B Q403 PMBS3904 E C445 0.1uF/16V VCPU VCPU LED_B R437 1 4.7K` 1/16W VCPU 3 3 2 R433 120` 1/16W Q401 PMBS3906 LED_GRN D402 BAV99 R434 120` 1/16W 2 Q402 PMBS3906 LED_ORANGE 3 R438 1 LED_O 4.7K` 1/16W DP1 DUAL LED 3 D403 BAV99 1 3 2 1 2 1 C451 1000pF 2 C452 1000pF ENTER R430 470` 1/16W RIGHT R431 470` 1/16W AUTO R432 470` 1/16W LEFT R435 470` 1/16W POWER R436 470` 1/16W D404 BAV99 C443 0.001uF D405 BAV99 C442 0.001uF 49 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 D406 BAV99 C441 0.001uF D407 BAV99 C440 0.001uF KEY_MENU KEY_RIGHT KEY_AUTO KEY_LEFT KEY_ONOFF D408 BAV99 C439 VCPU SW401 LCD ONOFF SW402 KEY LEFT 0.001uF SW403 SW404 KEY AUTO KEY RIGHT SW405 KEY MENU Title TSU56AK FOR ACER Size Document Number B MPU Date: Wednesday, January 19, 2005 Sheet 7 Rev D of 8