Acer TravelMate 430 TravelMate 430 Service Guide - Page 35

System Board Major Chips Item Keyboard controller RTC NS 87591L ICH3-M Controller Keyboard Item Keyboard controller Keyboard vendor & model name Total number of keypads Windows logo key Internal & external keyboard work simultaneously Specification NS 87591L Acer proprietary keyboard w/o launch button embeded 87/88/90 keys with 101/102 key emulation Yes Yes Battery Item Vendor & model name Battery Type Pack capacity Cell voltage Number of battery cell Package configuration Package voltage Specification Sanyo/Sony Li-ion 69.93Wh 3.7V/cell 9 Pin 1,2: BATT+: Battery positive power pin Pin 3: Floating pin (3S3P) Pin 4: B/I: Enable LI-ion battery output, connect to 1k Ω resistor to GND in system. Pin 5: TS: connect 10K Ω ohm Thermistor to GND Pin 6: EC_SMD1: SMbus DATA Pin 7: EC_SMC1: SMbus CLOCK Pin 8, 9: GND: battery ground power pin 11.1V LCD Inverter Specification This inverter is designed to light up the CCFL of LCD for TravelMate 430 series notebook. It should be supported the following LCD panels. No. Supplier 1 CPT 2 AU 3 CPT 4 AU 5 Hannstar 6 AU 7 IBM 8 Hitachi Model CLAA141XF01 B141XN04 CLAA150XH01 B150XG01 HDS150PX14-A B150PG01 ITSX95C TX38D91VC1FAC Type TFT, 14.1" XGA TFT, 14.1" XGA TFT, 15.0" XGA TFT, 15.0" XGA TFT 15.0" XGA TFT, 15.0 SXGA+ TFT 15.0" SXGA+ TFT, 15.0" SXGA+ There are two control signals that come form system to control lamp brightness. One signal is named DAC_BRIG, which limits current to meet LCD lamp current specification. Another one is named PWM, which adjusts lamp brightness. This inverter brightness is adjusted by PWM burst Chapter 1 27