The name 31DQ05 suggests a discrete diode part number, so this 75.9 KB PDF, although catalogued as a schematic, is probably a single-part datasheet.

A very small 12.3 KB PDF catalogued as a schematic and titled 27LV256-20I, a low-voltage 256 Kbit EPROM part number with what appears to be a 200 ns speed and industrial…

PDF of 96.4 KB labelled 30CTQ060L, a part-number style name that points to a component datasheet rather than a laptop or motherboard schematic.

PDF document, 103 KB, titled 30BQ040, a code that reads as a component part number rather than a motherboard number, so it should be treated as a datasheet despite the…

PDF datasheet of 297 KB for the 24AA65, 24LC65 and 24C65 serial EEPROMs, a 64 Kbit I2C family.

A 333 KB PDF datasheet for the 24AA16 and 24LC16B, 16 Kbit serial EEPROMs using the I2C bus.

A PDF datasheet for the 24AA04 and 24LC04B, 4 Kbit I2C serial EEPROMs commonly used to hold small configuration or calibration data.

Short PDF of 17.5 KB titled 23SC4428, catalogued under schematics. The name gives only a part number, and its 4428 suffix resembles that of a known smart-card memory…

A 122 KB PDF named 23c512, filed as a schematic though the name indicates a component document for a part numbered 23C512.

A 309 KB PDF listed under schematics and identified only by the code 22DGQ045. No device model, board number or revision appears in the name, and the string looks more…

Short 77.9 KB PDF in the schematic section, named only 22CGQ045, with no brand, model or board revision given.

Code 20ETF-HV is the only information in the name of this 99.5 KB PDF, which is catalogued as a schematic. It gives no brand, model, board number or revision.

A small 71.5 KB PDF with the very short name 16f, indexed as a schematic. The name is too terse to tell what device, series or component it covers, so the contents need…

Schematic PDF of 328 KB whose name, 8CLJQ045, reads like a component or part code and gives no laptop model, brand or board number.

Schematic in PDF form, 1.32 MB, for the UL20A according to its short name. No revision or board number beyond that code is stated, so read the cover page to confirm the…

A 986 KB PDF schematic identified only as T30, with no brand, revision or board number stated in the file name.

Schematic for the Lenovo NM-A191 mainboard, a PDF inside a RAR archive of 1003 KB. NM-numbered boards are LCFC designs, the ODM owned by Lenovo.

Schematic for Compal motherboard LA-G871P, supplied as a PDF inside a 651 KB RAR archive. The name does not give the laptop brand, model or revision.

Schematic of the IBM ThinkPad A31 motherboard, saved as a PDF of around 1.00 MB. The file name states the model only and gives no board number or revision, so compare…

PDF schematic of about 1004 KB for a motherboard labeled F83VF, with the r11 token most likely pointing to revision 1.1.

Schematic set for the Samsung SM-F946B in a ZIP of about 1.92 MB, the model code used for the Galaxy Z Fold5 international version. No revision is given.

Samsung SM-F700U schematic diagrams, about 2.06 MB in a ZIP archive, for the US version of the original Galaxy Z Flip. The name gives no board revision.

PDF schematic for the ASUS A7Sv notebook, a fairly detailed document at 7.56 MB. No board revision is stated in the name, so compare the revision silkscreened on the…

PDF schematic in a 2.16 MB RAR archive for board 14238-1, a number following the Wistron pattern.

Service schematic in PDF form, 6.22 MB, for the Panasonic TH-L22C31D LCD television, as identified by the file name. No chassis or board revision is stated.

Inventec schematic for the 15SBGV2 / 15SBGV2D mainboard, part number 6050A2548101, built on the Intel Shark Bay platform with a PGA processor socket and labelled PV…

Schematic PDF for an Apple Mac mini logic board 820-3227, project code J50I. Apple identifies its boards with 820-xxxx numbers, and that number is the key to finding the…

Schematic diagram in PDF format for board BM5968, revision 1.4 as read from the name; the brand and device it belongs to are not stated.

Schematic PDF for the Dell OptiPlex 3020, Wistron board 12125-2, 2.54 MB. Wistron is the ODM behind this five-digit numbering with a dash revision.

Schematic PDF for the Dell T1700 motherboard, platform name Amazon MT, revision A00, with a 2013-01-29 date code in the title, about 2.30 MB.

Topic 6 of a Spanish smartphone repair course, focused on diagnosing and solving hardware faults, in a 308 KB PDF. No model or board number is stated.

Small PDF of about 3 KB titled as a DC power supply amperage guide, indexed as a schematic but likely a reference sheet rather than a board diagram.

SIM card circuit page from the Samsung SM-A30S (Galaxy A30s) schematic set, saved as a 4.29 MB PDF.

Network or RF section from the Samsung Galaxy A30s (SM-A30S) schematic collection, as a 4.29 MB PDF file.

Audio page of the Samsung SM-A30S (Galaxy A30s) schematic, covering microphone, loudspeaker and earpiece circuits, saved as a 4.30 MB PDF.

Network and RF section schematic for the Samsung SM-A23, a 2.78 MB PDF from a series of per-function sheets.

Cellular network section schematic for the Samsung SM-A22 5G, a 5.26 MB PDF. It covers the RF chain, including transceiver, power amplifiers, antenna switches and the…

LCD circuit schematic for the Samsung SM-A22 5G, delivered as a 5.26 MB PDF. The sheet documents the display connector, MIPI data lanes, panel power rails and control…

Front camera schematic for the Samsung SM-A21s, PDF, 3.82 MB. It shows the selfie camera connector together with its power rails and data connections to the main board.

Component naming reference for the Samsung SM-A10, a 2.24 MB PDF. It maps designators to parts on the board, so you can locate a capacitor, coil or chip referenced in…