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Acer 1800 User Manual

Page 34

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26

Chapter 1

NOTE: 1. Li-ion Battery: Connect 1K

% ohm resistor to GND in Battery PCB.

NOTE: B/I pin: Battery can be Charged/Discharged only while this pin is connected to GND.

LCD Inverter Specification

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 to turn on and off the lamp at rate of 150Hz. The effective
brightness is varied with the duty cycle.

Windows logo key

Yes

Internal & external keyboard work
simultaneously

Yes

Battery

Item

Specification

Vendor & model name

Panasonic/Sanyo

Battery Type

Li-ion

Pack capacity

60Wh

Cell voltage

3.7V/cell/2000mAh High discharge rate

Number of battery cell

8

Package configuration

Pin 1
Pin 2

BATT+: Battery+, Battery Positive Terminal

Pin 3

ID : Identify Pin (Note 1)

Pin 4

B/I : Battery-In Pin

Pin 5

TS : Connect to Thermister

Pin 6

SMD : SMBus data interface I/O pin

Pin 7

SMC : SMBus clock interface I/O pin

Pin 8
Pin 9

GND : Battery Negative Terminal

No.

Panel

Model

Type

Frequency

(KHz)

Current

(mA)

VS at 0 C

Work

Voltage

Brightness

1

LG

LP171W0

1-A4-K2

17” WXGA

45/60/70

3.5/6/6.5

1500Vrms

750 Vrms

at 6mA

130/160

2

Samsung

LTN170W

X-L01

17”WXGA

55/60/65

4/6/6.5

1800Vrms

730 Vrms

at 6mA

145/170

3

AU

B170PW0

1

17”WXGA

50/60/70

-/6/7

1500 Vrms 785 Vrms

at 6mA

160/190

4

LG

LP171W0

2-A3

17”WXGA

40/60/80

3/6.5/7

1560 Vrms 720 Vrms

at 6.5mA

145/170

Keyboard

Item

Specification

5

±

°