Samsung troubleshooting guide for the Galaxy J7 model SM-J700H in PDF. TSHOO documents in Samsung service material normally cover fault-finding procedures with block…

AT command reference for the SIM900 GSM/GPRS module, provided as a 1.53 MB PDF. The manual lists the commands used to control calls, SMS, network registration, GPRS data…

Lesson nine of a Spanish phone-repair course on network unlocking and IMEI-based release, saved as a 619 KB PDF.

Portuguese PDF on the main rails or networks of a smartphone, converted from another format, 253 KB, with no model or brand named.

Datasheet for the Microchip ENC28J60, a stand-alone 10Base-T Ethernet controller with an SPI interface, as a 480 KB PDF.

Datasheet for the 1N4934GP rectifier, the glass passivated variant of the 1N4934 fast recovery diode, held in a 45.7 KB PDF.

Service schematic for the Samsung HomeSync GT-B9150, a home media and storage device, provided as a 2.87 MB PDF. The name states no board revision.

Datasheet of 243 KB in PDF for the 93C46B, a 1 Kbit serial EEPROM of the 93-series Microwire family; the B suffix generally identifies a version with fixed word…

Datasheet for the MT8870, a widely used DTMF receiver that decodes telephone keypad tones into a 4-bit code with a strobe output.

Datasheet for the RN-42 Bluetooth module, document version 2.32r, originally from Roving Networks and later Microchip.

Gigabyte GA-H81M-S motherboard schematic, revision 1.0, provided as a PDF within a 494 KB RAR archive.

PDF schematic for a board designated Z84FM, a variant within the Z84 code family. Nothing else is stated in the name: no revision, brand or laptop model.

Schematic PDF for PMP1012, a design marked as a TI-style power management reference design in the name.

PDF schematic for the Samsung GT-S3650, the Corby feature phone, at 741 KB. The name states no board revision.

Texas Instruments SN74ABT16823DGGR datasheet, a 36.9 KB PDF for an 18-bit bus interface flip-flop with 3-state outputs in the ABT logic family, packaged in DGG TSSOP and…

Schematic in PDF format for the Wistron Newgate board 15205-1M, the version fitted with GDDR3 graphics memory, packed in RAR.

Small 113 KB PDF for the Arduino Ethernet Shield, most likely the board schematic or a brief reference sheet rather than a lengthy datasheet.

Small PDF, 376 KB, whose Spanish title means converters, with no device, brand or model in the name.

Second chapter of a Spanish course introducing cellular phones and their technology, saved as a 503 KB PDF.

Schematic set in PDF covering the Nokia 6101 and 6102 mobile phones, two closely related clamshell models that share one circuit package here.

Service schematics covering the Nokia 1112 and its 1112i variant, packed into one 645 KB PDF.

Datasheet in PDF covering the 93C76 and 93C86 serial EEPROMs, the 8 Kbit and 16 Kbit members of the 93-series Microwire family, in a single combined document.

H46Y board schematic supplied as a PDF within a RAR archive of about 1.43 MB. No brand, model or revision appears in the name, so check the code printed on the…

MSI MS-V379 schematic, revision 5.0, delivered as a PDF packed in a RAR archive. The file name gives only the board code and revision, with no product or GPU listed, so…

Document bl8092 in PDF form, 600 KB, filed among schematics. The file name contains only the part code, so the device and manufacturer are not indicated and the contents…

Service manual for the Xiaomi Redmi Note 3, model code 3Z, a 9.52 MB PDF. Phone service manuals usually cover disassembly steps, exploded views, spare part lists…

Schematic section in PDF covering the Wi-Fi, Bluetooth and GPS circuitry of a handset, with the file name doubling the .pdf extension.

Opening topic 1 of a Spanish course on mobile telephony fundamentals, a 343 KB PDF. No phone model or brand appears in the name.

Samsung SM-A207F repair solution document in PDF format, packed in a 3.61 MB RAR archive and indexed as a schematic. SM-A207F is the Galaxy A20s model code.

Samsung SM-E700H schematic in PDF format, a fairly large 12.8 MB file. Apart from the model number, the name gives no revision or extra information.

Samsung SM-J710F schematic in a 6.27 MB PDF. The name supplies only the model number, with no board revision or region.

PDF schematics for the Samsung SM-A910F, 2.59 MB in size. The file name states only the model number, with no revision or extra details.

Orange Pi board schematic for the Allwinner A20-based model, revision 1.1, in a 354 KB PDF.

Service schematic in PDF form for the Samsung E1282T, a basic feature phone, at 589 KB. The name gives only the model, so no board revision is stated.

Service schematic for the Nokia 6120 mobile phone, supplied as a 788 KB PDF. The name gives no board revision or issue number, so compare the diagram against the PCB…

Small PDF document for the STK412-150, a Sanyo hybrid power amplifier module used in many home audio systems and mini hi-fi units.

Schematic in PDF format for a design called R9550L, with V10 in the name most likely indicating version 1.0 of the drawing.

Schematic for the Samsung Galaxy Core Prime SM-G360F, provided as a 3.84 MB PDF with no board revision in the name.

Datasheet PDF, 312 KB, for the LM324 quad op amp, listed in the schematic category without a manufacturer in the name.

Nokia E50 schematic diagrams in a 3.80 MB PDF. Only the model is identified by the name, with no PCB revision, so verify the board version before trusting part…