HP Envy TouchSmart 15 (Inventec 15SBGV2) Laptop Schematics

HP Envy TouchSmart 15 (Inventec 15SBGV2) Laptop Schematics

BASIC CHECKS:

TPS51225 3.3V and 5V
Pinsvreg3 vreg5
Check those pins for output. without those voltages on those pins the notebook will not power or charge the battery.

General keywords and problems related are NO POWER.
PinsEN_3V EN_5V equally important to vreg3 and vreg5. KEYWORDS – LDO Low-dropout Regulator

If there is 3.3v and 5v from TPS51225 and there is no EN voltage then replace TPS51225 and reflash BIOS.

HP DV6 DV7 AMD Discrete UT1 UT2 Quanta R53 Laptop Schematic

HP DV6 DV7 AMD Discrete UT1 UT2 Quanta R53 Laptop Schematic

HP DV6 DV7 AMD Discrete UT1 UT2 Quanta R53 Laptop Schematic

CHARGER ISL6251A – Charging IC

DCIN – The DCIN pin is the input of the internal 5V LDO.

VREF is a 2.39V reference output pin. It is internally
compensated.

VDD is an internal LDO output to supply IC analog circuit.

ACSET is an AC adapter detection input.

 

ACPRN Open-drain output signals AC adapter is present. ACPRN pulls low when ACSET is higher than 1.26V; and pulled high when ACSET is lower than 1.26V.

ICM is the adapter current output. The output of this pin produces a voltage proportional to the adapter current.

 

KBC Controller KB3926 U9

RSMRST# pin95 must drop down when power button its press. voltage equal to power button voltage.

SUSON – Suspended power on. SIO-KB3926 releases SUSON after power button its press.

HP Pavilion g4 g6 g7 (quanta r23 sabin rev 1a) Laptop Schematics

HP Pavilion g4 g6 g7 (quanta r23 sabin rev 1a) Laptop Schematics

HP Pavilion g4 g6 g7 (quanta r23 sabin rev 1a) Laptop Schematics

HP Pavilion g4 g6 g7 (quanta r23 sabin rev 1a) Laptop Schematics

EC KB3926U5

Critical check

RSMRST# must drop if power button its press

+5V/+3V RT8206B

 

ALWAYS VOTAGE

PL21 +3.3V_ALWP

PL20 +5V_ALWP

 

+VGACORE RT8208 1.8V

CHECK PL22 for GPU VOLTAGE

 

OZ8681 PU9 Charger IC

Check DCIN PIN 1 (must be 19v)

If not check PQ24 FDMC4435BZ and all the diodes aside connected to ground.

If all the voltage its present go to HP website and take the BIOS file and reflash the BIOS IC.

HP Probook 4431s (Inventec Roxette S3) Laptop Schematics

HP Probook 4431s (Inventec Roxette S3) Laptop Schematics

HP Probook 4431s (Inventec Roxette S3) Laptop Schematics

HP Probook 4431s (Inventec Roxette S3) Laptop Schematic

ROXETTE SEYMOUR-XT

DC & BATTERY CHARGER   
U1000 – BQ24726 QFN 20 Pins
Q1001 – AM7331P |Drain +VADPBL| ( Analog Power P-Channel 30-V (D-S) MOSFET)
Q1002 – AM7331P |Source +VBAT, Gate +VADPBL , Drain+VBDC| ( Analog Power P-Channel 30-V (D-S) MOSFET)
Q1000 – FDMC7692 | Gate –ACDRV pin4 from BQ24726, Source – +VADPBL from AM7331P, Drain – +VBAT | (N-Channel FET)

System Power +V5  +V3
U1018 –  TPS51123RGER QFN 24Pins

 

HP ProBook 4720s Wistron Laptop Schematics

HP ProBook 4720s Wistron Laptop Schematics
HP ProBook 4720s Wistron
Free Laptop Schematics
Thermal IC Control circuit U62 G781P8F-GP
Clock Generator U94 ICS9LRS3197
KBC 1098 U66 KBC1098-NU-GP
DC/DC Circuit U37 SI4800BDY-T1-GP Q25 DMN66D0LDW-7-GP
+5VALW to +5VS Transfer U96 SI4800BDY-T1-GP
DC & BATTERTY BT+ U51 AO4407AL-GP
CHARGER U19 BQ24740
5VALW/+3VALW U90 RT8205AGQW-GP
CPU CORE U103 ADP3212MNR2G-3-GP
VCC_GFX_CORE U4 ADP3211MNR2G-GP
+1.5VU / +0.75VS U69 RT8207GQW-GP
+1.8VS_VGA /+1.8VS_NB /+1D1V_REG U29 APL5930KAI-TRG-GP U104 APL5930KAI-TRG-GP U72 APL5930KAI-TRG-GP
RT8209B +1.05VS_VTT /+1.05V  U85 +1.05VS RT8209BGQW-GP U70 RT8209BGQW-GP
+VGA_CORE U76 RT8208AGQW-GP

HP Probook 6550b (Inventec Diesel 10 UMA) Laptop Schematics

HP Probook 6550b (Inventec Diesel 10 UMA) Laptop Schematics
HP Probook 6550b (Inventec Diesel 10 UMA)
Free Laptop Schematics

DC and BATTERTY CHARGER U7 TI_BQ24740_QFN_28P
SYSTEM POWER 3V/5V U2 TI_TPS51125_QFN_24P
SYSTEM POWER +V1.05M_LAN / +V1.5 U614 TI_TPS51117_QFN_14P
SYSTEM POWER +V1.8S U508 TI_TPS51124RGER_QFN_24P
SYSTEM POWER +VCCP U25 TI_TPS51218DSCR_SON_10P U509 RT9173DGSP_SOP_8P
CPU POWER VCC-CORE U21 ISL62883 CHRTZ_T_QFN_40P
GRAPHIC POWER +VGFX_CORE U14 ST PM6652TR VFQFPN_32P
CLOCK GENERATOR U29 SLG SLG8LV595 QFN_32P
SUPER I/O U15 SMSC LPC47N217N ABZJ_QFN_56P