HP V2000 Schematics
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HP laptop v2000 dv1000 notebook power detail Step with timing
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DV1000/V2000/ POWER ON DETAIL
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INTERSOFT LAPTOP CHIP LEVEL TRAINING +91 9824144698, 91 261 2424396
Y8
Power Button
2
AC Charge
1
NBSWON#
7
N
O
R
W
P
7
North Bridge
D6
PCI RESET
8
CPU VIO
VRON
Pin7
SHDN
MAX1907
VRM
VRM
P
CPU PWRGD
W
7
R
O
N
32.768KHZ
AC6
AB6 AC6 AC6
Y6
HWPG
ON1
Pin7
Pin12
South Bridge
ON2
SECONDRY VOLTAGE
Pin11
MAX1845
Pin6
DNBSWON #
5VAL
6 SHDN
18, 5 VAL
3, 4 on
SUSB
SUSC
2 Pgood
3 4
28
Pin4
160
POWERCHIP
Pin2
PC87591L
I/O
5
6
HWPG
SUS ON
SUS ON
HWPG
PRIMARY VOLTAGE
MAX1999/8734
BATTERYCHIP
MAX1772
EET
VREF 3V/5V
1
158
PD21
PQ44
VIN18V
VIN
VIN
25 AMP
1.36V
CPU CORE
CORE
VCC
MAIN
+1.5V
1.5V
VIN
MAIN
+5V
5VSUS
2.5V SUS
SUSP
VIN
VIN
MAIN
3V
3VSUS(AL4)
SUSP
ALWAYS
ON
3V PCU
5V PCU
V 2000/ DV1000/ M2000 MOTHERBOARD TRACING DETAIL
Battery
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INTERSOFT LAPTOP CHIP LEVEL TRAINING +91 9824144698, 91 261 2424396
5VPCU tube and connected to
First Step is to check whether normal voltage VA is generated. (VA is the voltage through PJ1 Power
Connector Adapter for Input Voltage.)If the Diode PD21, PD22 is open then VA voltage will not be
generated in normal circumstance.
Second Step is to check whether the VIN voltage is normal. VIN voltage is the voltage from the VA
conduction through the controlling MOSFET PQ44.
Third Step is to check 3.3/5 VPCU voltage is normal at Max 1999/8734. VIN voltage is generated as
3.3/5 VPCU in the basic premise of the system voltage. However, it only produces the two basic
voltages necessary for the condition to up the power section.
Here, we take the MAX8734/1999 chip as an example :
1. Check whether the MAX 1999/8734 20 PIN has 19V input.
2. Check whether the chip’s first 6 PIN SHDN has high 5V. When the pin is low, the MAX8734
/1999 will shut down and stop working.
3. Check whether the chip 5V-AL PIN 18 of MAX 1999/8734 generates a linear voltage. Here we
have to note that the section of 5V-AL voltages should not be taken to mean 5VPCU voltage. As
a linear voltage, it’s current output is very small, which is available in the 3.3/5 VPCU voltage
generator’s start voltage before it. When the 3.3/ 5VPCU voltage stabilizes, the 5V-AL output
PIN voltage will be 5VPCU and will take over to provide power. If the PIN has normal voltage
output, then we can say that the MAX 1999/8734 internal line is up and working. If not, with the
exclusion of other chip pin under exceptional circumstances, consider replacing the MAX
1999/8734 power chip.
4. Now, check chip section On PIN 3,4 the ON3 and ON5 signal should be high.
The role of these two pins is to open the 3.3 VPCU and 5 VPCU voltages. If these 2 pins show
low here then they certainly would not have 3.3/ 5 VPCU voltage.
5. Check 3.3/5VPCU output voltage, short circuit to ground to check impedance of
the existence of such anomalies. If the voltage output is short circuit,
MAX1999/8734 will soon be in line to protect their own state, to stop the output
voltage.
6. Voltages examined on both sides of the MOS 3.3/
control circuit is abnormal. We can examine and control ON3 and ON5 pins.
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