Schematic Diagrams
B - 1
B.Schematic Diagrams
Appendix B: Schematic Diagrams
Table B - 1
SCHEMATIC
DIAGRAMS
This appendix has circuit diagrams of the NP50HH / NP50HJ / NP50HK / NP55HH / NP55HJ / NP55HK notebook’s
PCB’s. The following table indicates where to find the appropriate schematic diagram.
Diagram - Page Diagram - Page Diagram - Page
System Block Diagram - Page B - 2 GPU GND - Page B - 23 1V8_RUN/AON, NV3V3, 3.3VA - Page B - 44
Processor 1/6 - Page B - 3 mDP - Page B - 24 3V, 5V, 3VS, 5VS - Page B - 45
Processor 2/6 - Page B - 4 Panel, Inverter - Page B - 25 1.8V, 1.8VS, 1.8VA, C10 - Page B - 46
Processor 3/6 - Page B - 5 HDMI - Page B - 26 VCCST, VCCSTG - Page B - 47
Processor 4/6 - Page B - 6 PCH 1/7 - Page B - 27 VNN / V1.05 - Page B - 48
Processor 5/6 - Page B - 7 PCH 2/7 - Page B - 28 VCCIN - Page B - 49
Processor 6/6 - Page B - 8 PCH 3/7 - Page B - 29 VCCIN Output - Page B - 50
DDR4 CHA SO-DIMM_0 - Page B - 9 PCH 4/7 - Page B - 30 AC_In, Charger - Page B - 51
DDR4 CHB SO-DIMM_0 - Page B - 10 PCH 5/7 - Page B - 31 VCCIN AUX - Page B - 52
VGA PCI Express - Page B - 11 PCH 6/7 - Page B - 32 DDR 1.2V / 0.6VS, 2.5V - Page B - 53
GPU Frame Buffer Partition - Page B - 12 PCH 7/7 - Page B - 33 NVVDD1 - Page B - 54
Frame Buffer A - Page B - 13 Audio Codec - Page B - 34 NVVDD2 - Page B - 55
Frame Buffer A - Page B - 14 M.2 WLAN+BT, PCIE 4X SSD - Page B - 35 PEX_VDD - Page B - 56
Frame Buffer B - Page B - 15 Type-C & A - Page B - 36 FBVDDQ - Page B - 57
Frame Buffer B - Page B - 16 Card Reader RTS5227S RTD3 - Page B - 37 OVRM - Page B - 58
VGA NVVDD Coupling - Page B - 17 LAN RTL8111H RTD3 - Page B - 38 Audio Board + Redriver - Page B - 59
Straps and XTAL - Page B - 18 HDD, Click TP, Audio - Page B - 39 LED Board - Page B - 60
IFP I/O Interface - Page B - 19 LED, CCD, TPM, Power SW Bd. - Page B - 40 Power SW Board - Page B - 61
Misc - GPIO, I2C and VBIOS - Page B - 20 KBC-ITE IT5570 - Page B - 41 17” LED Board - Page B - 62
NVIDIA Power Sequence - Page B - 21 RGB KB - Page B - 42 Power Sequence - Page B - 63
GPU NVVDD, FBVDDQ - Page B - 22 VDD3, VDD5 - Page B - 43
Version Note
The schematic dia-
grams in this chapter
are based upon version
6-7P-NP705-002. If your
mainboard (or other
boards) are a later ver-
sion, please check with
the Service Center for
updated diagrams (if re-
quired).