Nokia 3210 schematics in a 981 KB PDF, with no board revision mentioned in the name. This classic handset is still repaired by collectors and technicians, and the sheets…

Nokia 2300 schematic diagram, a PDF of 317 KB with no revision or board version mentioned in its name.

Circuit diagram for the Lenovo ThinkPad Edge E420, a 1.22 MB PDF with no board number or revision stated in the name.

Schematic for the Lenovo 3000 G230, marked in the name as the DDR3 version, so the memory pages apply to boards using DDR3 rather than older RAM.

Schematic for the IBM ThinkPad A31, a 1.00 MB PDF whose name gives only the model. No board number or revision is mentioned, so compare the PCB markings with the…

Circuit diagram for the Z94 board, revision 1.1, as a 902 KB PDF. No brand or full board number appears in the name, so the cover page should be consulted to confirm the…

ASUS F5Z laptop schematic, an 863 KB PDF identifying the model but not the board revision or number.

Quanta-designed Sony VAIO mainboard MBX-216, project GD3, documented in this PDF schematic of about 1.09 MB.

Schematic for Sony motherboard MBX-187, also carrying the IRX-5040 code, delivered as a compact 735 KB PDF.

Schematic for Compal function board LS-4498P, part of the KAL90 project, revision 1.0, in a 24 KB PDF.

Repair guide for the Asus X450JN notebook in a 1.01 MB PDF. The motherboard revision is not stated in the name, so confirm it from the document.

Schematic for Quanta project TT9, revision R1A, in an 820 KB PDF, the second copy of an identical document.

Short PDF document of 124 KB titled DMI process, catalogued as a schematic but more likely a procedure guide. No laptop brand or model is named.

Samsung GT-I9300 Galaxy S III service manual, revision 1.0, 9.31 MB PDF. Manuals of this type generally cover specifications, disassembly, block diagrams, schematics…

Schematic in PDF for the Gigabyte H410M H V3 desktop motherboard, revision 1.1. The drawings cover the circuits of this board, so a technician can follow CPU and memory…

Schematic PDF of about 990 KB with a generic messaging-app style filename that gives no model information, though board number 6050A2364601 has been identified for it.

Schematic PDF for the HP TX1000 notebook. The file name gives only the model, with no board number, ODM project code or revision, so confirm the motherboard markings…

PDF schematic labelled only CQ32, which most likely refers to the HP Compaq Presario CQ32 notebook, though the name gives no board number, ODM or revision.

Repair guide for the G750JH gaming notebook, RG in the name, in a 999 KB PDF. Such guides typically show the mainboard with highlighted parts, expected voltages at test…

PDF for the KIA324P, a KEC quad operational amplifier compatible with the widely used LM324, in a DIP package as the P suffix suggests.

PDF for the KA4558, a dual operational amplifier in the KA series, equivalent in function to the familiar 4558 dual op amp, size 121 KB.

PDF reference on the 2SC4517 transistor, the name noting it as NPN; the file is 26.9 KB and indexed as a schematic.

Catalogued as a schematic, this 27.2 KB PDF carries only the code 3LP01SS, which looks like a component part number with a two-letter SS suffix.

PDF reference of 221 KB for the 2SK2909, catalogued as a schematic. Only the part number is present in the name, with no maker or revision indicated.

The 2SK2750 is covered by this 394 KB PDF, indexed as a schematic but most likely the component datasheet, since 2SK is the JIS prefix for N-channel FETs.

Datasheet-style PDF for the 2SK669, a part number in the JIS 2SK series used for N-channel field-effect transistors, listed in the index as a schematic.

Small 31.3 KB PDF covering the 2SC5265LS, filed as a schematic. The 2SC prefix in the JIS system identifies an NPN bipolar transistor, and the LS suffix marks a variant…

Datasheet in PDF form for the 2SC4696, filed in the index under schematics although the name points to a discrete part document rather than a board diagram.

The 2SC4163 part number is all this 98.9 KB PDF name reveals, so although labelled a schematic it is best read as a transistor datasheet.

Named in lowercase for the 2sc4132, this 63.0 KB PDF is classed as a schematic but is better understood as the datasheet for an NPN bipolar transistor, which is what the…

A 129 KB PDF filed under schematics, though its name, 2SC3807, is simply a transistor type number.

At 192 KB this PDF is somewhat larger than its neighbours and covers the 2SC3142 transistor, an NPN bipolar part under JIS 2SC numbering.

PDF of 41.2 KB for the 2SC3130, with an extra E suffix in the name whose meaning is not stated; it may mark an edition, language or variant, so check inside.

Compact 128 KB PDF bearing the part number 2SC2983, indexed as a schematic. Under the Japanese JIS naming convention a 2SC number denotes an NPN bipolar transistor, so…

Catalogued among schematics, this 54.5 KB PDF is named for the 2SB642, which the JIS 2SB prefix marks as a PNP transistor; the document is therefore expected to be a…

Reference PDF for the 2SA1127 transistor, 41 KB, filed in the schematic category, with an _E suffix in the name whose meaning is not stated.

Datasheet for the 2SA879 in a 49.9 KB PDF; the trailing _E in the name probably denotes an English version, though the name does not confirm it.

Short 49.9 KB PDF document for the 2N6284, a JEDEC-registered discrete semiconductor, catalogued as a schematic though it is most likely the part's datasheet.

File for the 2N3904 with a _3 suffix, 51.2 KB PDF; the suffix probably distinguishes it from another copy or edition, but the name does not state its meaning.

Part number 1SS181 gives this 70.1 KB PDF its name, and the index places it among schematics.