Schematic in PDF for the Toshiba Satellite C850 and C855, which share a mainboard design.

Circuit diagram in PDF for the Gigabyte GA-M57SLI-S4 motherboard, revision 2.03. The model name points to an NVIDIA nForce 570 SLI chipset for AMD processors, but check…

Schematic PDF for what appears to be a Gigabyte EP45-DS4 desktop board, revision 1.03, with 0502 likely being a document date code.

Samsung service document for the SM-G925F, the Galaxy S6 Edge, provided as a 6.59 MB PDF; the TSHOO token in the name indicates the troubleshooting section of the…

PDF schematic for the Samsung NP-R423 laptop, about 1.12 MB. The name gives only the model, without a board number or revision, so look for the BA41 code in the drawing…

Circuit schematics for the Nokia 6021, provided as a 1.23 MB PDF without a revision in the name.

First part of a Nokia 5110 schematic set, a 746 KB PDF marked number 1, meant to be used alongside the second part of the same series.

Drawing package for the X121E notebook, carrying the DM NOTE HR FL8 project label, revision B and a 20110131A date, apparently the same design used for the related…

Lenovo E255 schematic in PDF form, with the name giving only the model and no board number, manufacturer code or revision.

Another schematic set for the Dell Vostro 1500, this one about 1010 KB in PDF. The file name gives no revision, and since other versions of this model circulate at…

Service schematic in PDF form for the Dell Inspiron 1720 notebook, a 1.24 MB document. The name mentions a version but gives no number, and no motherboard number or…

ASUS A3N laptop motherboard schematic supplied as a 1.01 MB PDF. No board revision appears in the name, so compare the revision printed on the mainboard with the title…

Schematic in PDF for a Sony FJ-series notebook, the name pointing to the FJ67C model and an Intel-based mainboard marked RD1, MB, 0702A.

Asus repair guide for the model listed as Zenbook X453SA, in a 1.08 MB PDF. No board revision is stated in the name.

Repair guide in PDF format for the ASUS N552VX notebook, catalogued with the schematics.

Repair guide in PDF form for the ASUS K42JA notebook, catalogued alongside schematics. The name gives no board number or revision, so treat it as a service companion…

Quanta ZRP schematic, revision A1A, for the Acer Aspire V5-551G, delivered in PDF format at about 1.42 MB.

Full-size 2.47 MB copy of the Quanta Usopp SLS schematic for the Acer Aspire T5000 desktop, offered in PDF form.

Quanta ZYW schematic for the Acer Aspire E5-731 and E5-771, board DA0ZYWMB6E0, revision 3A, as a 1.17 MB PDF.

Lenovo IdeaPad Z570 schematic from Wistron, project LZ57 at revision 1.0, a 3.08 MB PDF.

Compal LA-1691 notebook motherboard schematic at revision 0.4, a 981 KB PDF. The name gives only the ODM board number and revision; brand and model are not stated.

Maxim datasheet for the MAX1909 and MAX8725, two related parts covered in one 1.05 MB PDF.

PDF reference of about 247 KB on BIOS beep codes, catalogued under schematics although by its name it is a diagnostic chart rather than a circuit diagram.

Schematic PDF for the Acer Aspire 5943G laptop, based on the Compal LA-5981P motherboard, revision 1.A.

Circuit diagrams for the Acer Aspire R5-571TG mainboard, the Pegatron P5HCJ project at revision 1.2, supplied as a PDF.

PDF schematic of 5.39 MB whose name is just an automatic messaging-app document number, so it reveals no brand, model or board number.

Schematic in PDF, 3.04 MB, for Lenovo board NM-C511 revision 1.0. NM-prefixed numbers belong to LCFC, the Lenovo-Compal joint venture that designs many Lenovo laptop…

Sheet for the 2SB156, labelled in the name as a PNP transistor rated -20 V and -500 mA, provided as a 39.7 KB PDF and indexed under schematics.

Reference PDF for the BD136, BD138 and BD140 transistor series, catalogued as a schematic but in practice a component datasheet of 51.2 KB.

Schematics in a 13.8 MB PDF for a board marked 330S_KBL_MB, version V06 at MP revision, carrying the code 431204223050.

Schematic diagram in PDF for the ASUS X553MA laptop, with an RG suffix in the name whose meaning is not stated.

A PDF of 119 KB filed under schematics, though its name is simply the Japanese part number 2SC4364, which points to a component datasheet rather than a board diagram.

A 100 KB PDF whose name is simply the part number 2SC4171; despite the schematic label it is best treated as a transistor datasheet.

Datasheet for the 1N4933 fast recovery rectifier, saved as a 44.2 KB PDF whose name points to revision 3 of the document.

Listed as a schematic, this 524 KB PDF carries the part numbers 25AA080A/B and 25LC080A/B, the Microchip 8 Kbit SPI EEPROM family, so its content is a component…

Manufacturer datasheet, in PDF form, for the 128 Kbit serial EEPROM sold as 24AA128, 24LC128 and 24FC128.

Datasheet in PDF for the 24AA64 and 24LC64, 64 Kbit serial EEPROMs on the I2C two-wire bus.

Datasheet PDF covering the Power Integrations TinySwitch family: TNY274PN through TNY280PN plus TNY176PN, filed in the index as a schematic.

Schematic in PDF format for the X453MA mainboard, about 1.43 MB, marked RG, which on ASUS-style files usually denotes the revision release; no brand or revision number…

Lenovo E40 circuit diagram in PDF, approximately 1.38 MB, with no board number or revision stated in the file name.