Acer Extensa 610 Service Guide

							2-94Service GuideTable 2-17T62.062.C Electrical Characteristics Table (Continued)ParameterSymbolConditionMINTYPMAXUNITS SAFETY OPERATIONOver voltage
protect by SoftwareNiMH
LiB_lon16.2
13V
VNote 1: External Adapter:Voltage limit 20V1V with maximum 24V over voltage as well as over current
protection.2.9.5Pin Diagram
DC_BAT_OUT 1 o o 2DC_BAT_OUTDC_BAT_OUT 3 o o 4DC_BAT_OUTGND 5 o o 6GNDPERIPHERAL SYSTEM ON 7 o o 85VSB_OUTSYSTEM ON 9 o o 10DISABLEBT_QCHG11 o o 12AD5VSMI13 o o 14S.I.U.TH15 o o 16BL1#ID17 o o18BL2#GND19 o o20BAT_IN_USE#BT_VS21 o o22GNDBT+23 o o24BT+               BT+25 o o26BT+Figure 2-18T62.062.C Pin Diagram 
						

							Major Chips Description2-952.9.6 Pin Description
Table 2-18T62.062.C Pin Description tableItemPin NameI/ODescription SAFETY OPERATION1DC_BAT_OUTO/P.adapter power input and battery power output terminal(
 with 5 A short circuit protection) 2DC_BAT_OUTO/Psame as pin 13DC_BAT_OUTO/Psame as pin 14DC_BAT_OUTO/Psame as pin 15GNDground6GNDground7PERIPHERAL
SYSTEM ONI/Psystem power on ,input a high pulse. user have different
way to turn on sysem by peripheral device.85VSB_OUTO/Pcharger 5VSB output9SYSTEM ONO/Pconnecting to main system ‘power on ’ signal10DISABLEI/Plogic high to notice charger to turn off system11BT-QCHGO/Pcharge status, when quick charge output logic high. 12AD5VO/Pwhen adapter inserted, output +5V,10mA (max).13SMIO/Popen collector, when push power on switch then output
low. (delay 6040 mS)14S.I.U.I/Plogic high when system in use power15THI/Pconnecting to thermistor inside battery pack using 103AT-
2 (10K/25,1%).16BL1#O/Pwhen battery voltage lower than BL1 voltage then output
low (available when S.I.U).17IDI/Popen circuit when a 9 cells LIB battery inserted,
connecting to GND when a 9 cells NiMH battery inserted.18BL2#O/Pwhen battery voltage lower than BL2 voltage then output
low (available when S.I.U).19GND..20BAT-IN-USE#O/Plogic low when battery in use power
(available when S.I.U).21BT_VSI/Pconnecting to battery most positive terminal22GND 23BT+I/Oconnecting to battery most positive terminal24BT+I/Osame as pin 2325BT+I/Osame as pin 2326BT+I/Osame as pin 23 
						

							2-96Service Guide2.9.7Functions Description
2.9.7.1Charge Function
A. FOR NIMH BATTERYWhen the charger module charges a 9 cells NiMH battery, 0V and T/ t, max T and - v detentions
will be used as the main methods to determine the full charged battery. To ensure safety for the
battery and system, fast charging NiMH battery after long period of storage time, the module will
disable 0V detection during a short “ hold-off” period at the start of fast charging. Also when
‘charge in use’ the 0V and -V detection will be disabled during whole charging period.
When system not in use power, the quick charge current will be limited by the Adapter to
1.9A0.1A. If system in use the charge current will be limited by charger module to 0.650.07A.
When battery voltage lower than 1.0v/cell the charger module will precharge the battery (with 1/8
duty cycle/2HZ) and 50/150 minutes maximum timer.
When battery is fully charged, the charger module will offer 25mA 5mA trickle current to maintain
the battery at 100% capacity.
The BT-QCHG pin will send a logic high signal for LED indication by the charger, when precharge
or quick charge is on.
B. FOR LIB BATTERYWhen the charger module charges a 9 cells (3’s parallel , 3’s serial) LIB battery. The charger will
offer 1.90.1A charger current when system not in use power whereas 0.650.07A when system in
use power. Quick charge will be terminated when charge current less then 150mA60mA. Then
12.67V 0.05V constant voltage with one hour timer will be applied to charge battery. Also if battery
voltage lower than 7.50.2V the charger will precharge the battery, using 200mA60mA with 2 hours
maximum timer.
When battery is fully charged the charger module stop charge. But the charger module will
recharge the battery if  battery voltage lower then 11.4V 0.2V.
The BT-QCHG pin will send a logic high signal for LED indication, when precharge or quick charge
is on.
2.9.7.2Discharge Function
When system turned on, the charger will check AC power inserted or not . If AC power inserted,
then AC power will be the role of power provider. If not, the charger will discharge the battery
already inserted in the notebook system.
If system in use power when Adapter not inserted and battery voltage lower than BL1 voltage, the
charger module will indicate a battery Low 1 signal . And if battery voltage lower than BL2 voltage
, the charge will indicate a Battery Low 2 signal . 
						

							Major Chips Description2-97When system on if Adapter not inserted and battery voltage lower than BL3 voltage , then system
will be turned off by the charger module.
In addition, when system sends a ‘disable’ signal to charger module, system will be turned off by
the charger module immedietly.
2.9.7.3Safety Concerns
For safety, the charger module inhibits charging until the battery voltage and temperature are
within the configured ranges. If the voltage is less than the low voltage threshold , the charger
module provides trickle current to charge the battery . This prevents fast charging could possibly
damage the battery. Also when the temperature of battery pack is over the temperature threshold,
the charger module will not charge the battery until its temperature within a configured range. This
prevents reducing the battery’s service life.
Concludely, in order to ensure safety for the battery and system, charge may be terminated when
the battery temperature over a threshold or after a safety time period. 
						

							2-98Service Guide2.10T62.061.C DC-DC Converter
This compact, high efficiency DC/DC Converter features +5V, +3.3V, 2.35V/2.45V/2.9V/3.1V,
+12V and +6V five outputs up to 22 watts. And it accepts input from 7V to 21V, suitable for 3 cells
Lithium Ion or 10 cells NiMH battery input Pentium based Notebook PC.
The converter also supplies P.G. signal, 2.35V/2.45V/2.9V/3.1V switch for CPU and ON/OFF
control.
2.10.1Pin DiagramFigure 2-19T62.061.C Pin Diagram
2.10.2Pin Assignment
Table 2-19T62.061.C Pin DescriptionsPin No.Description1,2GND3DC-IN4P.G.Vcc5+5.0V6GND7+6V8+12V9GND10+3.3V115VSB12ON/OFF13P.G.14,15Vcpu16,17GND 
						

							Major Chips Description2-992.10.3Specifications
Input:
· DC BATT_IN:7V-8V DC
Output:
· +5V:Load:0~2A
· +12V:Load:0~0.12A
· The other conditions same as 2.2.1
Input:
· DCBATT_IN:8V-21VDC
Output:
· +5V: Load: 0A-3.2ARegulation: +5%, -5%
· Ripple: 50mV (max)
· Noise: 100mV (max)
· OVP: 6.5-8.2V
· Short-circuit protection
· Fuse protection
· *Ripple(max)=75mV when regulate in IDLE mode
· +3.3V: Load : 0A-3.3ARegulation: +5%, -5%
· Ripple:50mV (max)
· Noise:100mV (max)
· OVP:4.5-6.2V
· Short-circuit protection
· Fuse protection
· *Ripple(max)=75mV when regulate in IDLE mode
· +2.9V:(3.1V) Load: 0A-3.0ARegulation: +5%, -4%
· Ripple: 50mA (max)
· Noise: 100mV (max)
· OVP: 3.3-5.0V
· Short-circuit protection
· Fuse protection
· *Ripple(max)=75mV when regulate in IDLE mode 
						

							2-100Service Guide· +2.35V:(2.45V)  Load: 0A-4.2ARegulation: +5%, -4%
· Ripple:50mA (max)
· Noise: 100mV (max)
· OVP:3.3-5.0V
· Short-circuit protection
· Fuse protection
· *Ripple(max)=75mV when regulate in IDLE mode
· +12V: Load: 0A-0.15A Regulation: +/-5%
· Ripple: 100mV (max)
· Noise: 200mV (max)
· OVP:14-20V
· *The +12V max load condition is available only when the +5V output load is greater than
0.5A.
· +6V: Load: 0A~0.1ARegulation: 5.5V~7.5V
· Ripple: 300mV (max)
· Noise: 500mV (max)
· OVP: 7-9 V
· *The +6V max load condition is available only when the +5V output load is greater than
0.5A.
· 5VSB:Load: 5mARegulation:+/-10%
· Ripple: 75mV(max)Noise: 250mV(max)
· P.G.:Active high within 100ms to 500ms after system’s +5V, 3.3V and Vcpu are all in
regulation.
· Driving capability:12uA(source)200uA(sink)
2.10.4Control
· VCPU Control:Control switch can switch Vcpu output voltage to 2.35V2.45V2.9 or 3.1V.
· ON/OFF:A logic low will turn off +5V,+3.3V, 2.35V/2.45V/2.9V/3.1V,+12V and +6V
main o/p.  The DC/DC converter draws about 30uA when the notebook computer is in
shutdown  mode.
2.10.5 Application:
Input filter capacitor
The recommended value is two pieces of 10uf/50V ceramic capacitor(or the same grade
capacitor, such as SANYO OS-CON capacitor) with less than 150mohm ESR. And it should be
located less than 10mm away from DCBATT_IN pin. 
						

							Major Chips Description2-101Output filter capacitor
The recommended value is 30uF/Amps TAN or OS-CON CAP.
Efficiency:
90%(MIN) at 12V input and 5V/1.5A , 3.3V/0.8A , 2.9V/0.6A load.
Environment:
· Operating
· Temperature:0  to  65
· Relative Humidity:10% to 95%
· Shipping/Storage
· Temperature:25 to 85
· Relative Humidity:10%   to 95% 
						

							2-102Service Guide2.11T62.064.C DC-AC Inverter (11.3)
THIS IS A DC-AC INVERTER UNIT TO DRIVE BACKLIGHT CCFT FOR NOTEBOOK
COMPUTERS
Table 2-20MAXIMUM RATINGSITEMSYMBOLMINMAXUNITREMARKINPUT
VOLTAGEVin722VINPUT
CURRENTIin--0.6A2.11.1Electrical Specifications
Electrical Characteristics
Table 2-21Electrical CharacteristicsITEMSYMBOLMINTYPMAXUNITREMARKINPUT VOLTAGEVin7.0--22.0VINPUT CURRENTIin----600mANO LOAD VOLATAGEVs----1400VrmsWORKING
FREQUENCYf45--60KHzTUBE CURRENT
(OUTPUT MAX.)Iout5.56.06.5mArmsPWM
100%TUBE CURRENT
(OUTPUT MIN.)Iout0.51.01.5mArmsPWM
25%CONTRAST VOLTAGE
(OUTPUT MAX)VEE2.152.32.45VrmsPWM
100%CONTRAST VOLTAGE
(OUTPUT MIN)VEE1.351.51.65mArmsPWM
25%Tc=25 Vin=7.0V TO 22.0V 
						

							Major Chips Description2-103Operation Conditions
· OPERATING TEMPERATURE0 TO +50
· OPERATING HUMIDITY90% MAX. R.H
· STORAGE TEMPERATURE10 TO +85
· STORAGE HUMIDITY90% MAX. R.H
· MTBF50000 HRS
2.11.2Pin & Connector Assignment
J1: 52103-1217 (MOLEX)
Table 2-22Pin DescriptionPIN NO.SYMBOLDESCRIPRION1DCBATTINDC (7.0V ~ 21.0V)2GNDPOWER GND3CCFTONPWM SIGNAL FOR ON/OFF AND
BRIGHTNESS CONTROL 4DATAID X24C02 DATA5+5.0V+5.0V ± 10%6SGNDLOGIC GND FOR X24C027N.C.8CKCLOCK FOR X24C029N.C.10VEEVEE OUTPUT11CTENCONTRAST ON/OFF TTL LEVEL ²H² ON12CTVRENPWM SIGNAL FOR CONTRAST VOLTAGEJ2:SM02(8.0)B-BHS-1-TB2P (JST)
Table 2-23Pin DescriptionPIN NO.SYMBOLDESCRIPRION1VOUT1Lanp , Input HV2NC3VOUT2Lanp , Input LV