Acer 420 manual Battery, LCD Inverter Specification, CPT CLAA141XF01, TX38D91VC1FAC, IBM ITSX95C

Keyboard

Item	Specification
Windows logo key	Yes
Internal & external keyboard work simultaneously	Yes

Battery

Item	Specification
Vendor & model name	Sanyo/Sony/Panasonic
Battery Type	Li-ion
Pack capacity	69.93Wh
Cell voltage	3.7V/cell
Number of battery cell	9
Package configuration	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
Package voltage	11.1V

LCD Inverter Specification

This inverter is designed to light up the CCFL of LCD for TravelMate 420 series notebook. It should be supported the following LCD panels.

No.	Supplier	Model	Type
1	AU	UB141X01	TFT, 14.1” XGA
2	CPT	CLAA141XF01	TFT, 14.1” XGA
3	AU	B150PG01	TFT, 15.0 SXGA+
4	Hitachi	TX38D91VC1FAC	TFT, 15.0” SXGA+
5	AU	B150XG01	TFT, 15.0” XGA
6	IBM	ITSX95C	TFT 15.0” SXGA+
7	Hannstar	HDS150PX14-A	TFT 15.0” XGA

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 mode. The PWM burst mode is that turning on and off the lamp at rate of 150Hz. The effective brightness is a function of the duty cycle.

Features

1.Wide range 9V to 21V input voltage.

2.Birghtness adjustment by PWM duty mode.

3.Close loop controls lamp current.

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