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Abbreviation of Laptop motherboard's schematics symbols & letters

S.NoCodeAbbreviation
1ACAlternative Current
2ACDRVAdapter current drive
3ACGOODValid adapter active -low detect logic open drain output
4ACINAdapter current input
5ACNAdapter current negative ( taken from current sensing resistor )
6ACPAdapter current positive ( taken from current sensing resistor )
7ACOPAdapter current over current protection
8ACOVAdapter current over voltage protection
9ADP+Adapter positive supply
10ADP_IDAdapter Identity
11AGNDAnalog Ground
12ALWPAlways on Power
13B+Adapter or Battery power rail to power the circuit ( this is the point motherboard takes power to all the other areas of the motherboards power requirement)
14BATTBattery
15BAT+Battery power rail to power circuit
16BAT_DRVBattery MOSFET's gate driver
17BAT_VBattery voltage
18BOMBill of material management
19BTButton
20BT_ENBloototh Enable
21BUZERIt means connected
22BYPBypass
23CHGENCharge enable active-low logic input
24CINInput Capacitor
25CLK_ENClock Enable
26CNConnector
27CRTCathode Ray Tube
28CSINCurrent Sensor Input Negative
29CSIPCurrent sensor input positive
30DCDirect Current
31DMDIM Socket / Socket Memory / DDR Socket
32DOCKDocking Socket
33ECEmbedded Controller
34EC_ONEmbedded Controller Enable / IO Enable / SIO enable
35EMIElectromagnetic Interference
36ENEnable
37ENTRIPEnable Terminal
38FFuse
39FSELFrequency Select input
40GATETrigger Mosfet Gate
41GNDGround
42GPGround Pin
43GPIGeneral Power Input
44GPIOGeneral power input and output
45HDMIHigh definition multimedia interface
46IDContinuous Drain Current
47IDMPulsed Drain Current
48IINOperating supply current
49IIN (SHDN)Shutdown supply current
50IIN (STBY)Standby Supply Current
51ISContinuous source current
52IVINBattery Supply Current at VIN pin
53JPJumper Point ( there are few jumper points will be there on the motherboard for troubleshooting and separating circuits, this jumper point help us to troubleshoot easily )
54KBCKeyboard Controller / IO / SIO / EC - all are same
 

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