COMPONENTS CODE

C : Capacitor
D : DIODE
L : Inductor
PC : POWER Capacitor
PD : POWER Diodes / DIODE
PL : POWER inductor
PQ : POWER TRANSISTOR
PR : POWER RESISTOR
PU : POWER INTEGRATED CIRCUIT
Q : TRANSISTOR
R : RESISTOR
T : Transformers
U : INTEGRATED CIRCUIT
X : Terminal strips , terminations , joins
Y : Crystal ( crystal clock oscylator )

LANGUAGE OF LAPTOP MOTHERBOARD SCHEMATIC

AC           : Alternating current
ACDRV    : AC adapter to system – switch driver output
ACGOOD : Valid adapter detect active-low open – drain logic output
ACN        : Adapter current sense negatif
ACP        :Adapter current sense positif
ACOP      : Input Over – Power Protection
ACOV      : Input Overvoltage Protection
ACP        : Adapter current sense resistor , positive input .
ALWP      : ALWAYS ON POWER
+ B        : AC POWER RAIL OR BAT FOR POWER CIRCUIT
BATT       : BATTERY
BOM        : BILL OF MATERIALS MANAGEMENT
BT           : BUTTON
CHGEN     : Charge active-low enable input logic
CIN         : Input Capacitor
CLK_EN   : CLKOCK ENABLE
CON        : CONECTOR
CRT        : Cathode ray tube
DC          : Direct current
DM          : DIM / DIM SOCKET / SOCKET MEMORY / JACK DDR
DOCK       : DOCKING SOCKET
EMI         : Electromagnetic Interference ( ELECTROMAGNETIC INTERFERENCE )
F             : FUSE
FSEL        : Frequency Select Input .
GND         : Ground
GP           : GROUND PIN
HDMI       : High – Definition Multimedia Interface
ID            : Continuous Drain Current
IDM         : Pulsed Drain Current
IIN           : Operating Supply Current
IIN ( SHDN ) : Shutdown Supply Current
IIN ( STBY ) : Standby Supply Current
IS            : Continuous Source Current ( Diode Conduction )
Ivin          : Battery Supply Current at VIN pin
JP            : JUMPER POINT
LCDV        : LCD POWER
LGATE      : Lower -side MOSFET gate signal
LPC          : Low Pin Count
LVDS        : Low – voltage differential signaling ( SYSTEM PENSIGNALAN )
MBAT       : MAIN BATTERY
ODD         : OUTPUT DISC DRIVE
PCI           : Peripheral Component Interconnect
PGOOD     : Power good open – drain output
PIR           : IMPROVED PRODUCT RECORD
PSI #        : Current input indicator
PVCC        : positive power supply IC
RTC          : REAL TIME CLOCK
TD            : Death Time
THRM        : THERMAL SENSOR
TMDS        : Transition Minimized Differential Signaling ( DATA TRANSMISSIONS teknology )
TP             : TEST POINT
TPAD         : THERMAL PAD
UVLO         : Input undervoltage lock -out
V               : vOLTAGE
+ V            : PWR MORE ( +3 V = MORE THAN 3Volt )
VADJ          : Output voltage regulation
VALW         : ALWAYS ON POWER
VALWP       : VALW PAD
VBAT          : BATTERY POWER
VCCP          : power chip ( ich , graphic chips )
VCORE        : POWER processors ( vCPU )
VDD            : control power supply
VDDR          : POWER DDR ( VDRAM / VRAM / Vmem )
VDS            : DRAIN SOURCE VOLTAGE
VFB            ; feedback inputs Power
VGS            : GATE VOLTAGE SOURCES
VIN             : Input Voltage Range
VIN             : ADAPTER power supply ( vol_in )
VL              : Power Lock
VL              : voltage across the load / resistor load voltage
VLDOIN       : Power supply of the VTT and VTTREF output stage ( to Powermos ) VOT            : Volt_out
VRAM          : Power Random acses memory
VREF           : POWER REFERENCES / SCHEMA REFERENCE / DEMAND SCHEME
VS               : SUITCH POWER/voltage on switch
VS +            : VOLTAGE SUPPORT
VSB             : POWER SWITCH BUTTON
VSS             : Signal ground .
VSW            : POWER SWICT
VUSB           : USB POWER/voltage USB
VVGA           : POWER VGA ( VGPX / VGPU / VCVOD