JCID Schematic Tool

JCID Schematic — Mobile & Computer Repair Schematic Solution

5 min read

What is JCID Schematic?

JCID Schematic (jcid.com) is a professional schematic and board view platform developed by JCID — a company also known for their hardware repair tools (JCID Nand programmers, battery repair boards, face ID repair tools). JCID Schematic provides electronic circuit diagrams and PCB board views for mobile phones, tablets, laptops, and Apple Watch.

Core Features

Feature	Detail
Schematic Diagrams	Full circuit diagrams organized by functional block: PMIC power distribution, CPU/AP, baseband/modem, display/touch (MIPI DSI), charging (USB-C PD/Qi wireless), audio codec, camera ISP, WiFi/BT/GPS/NFC, SIM interface, NAND/UFS storage. Pin-level detail for every IC
PCB Board View	Interactive top/bottom PCB layouts with component identification. Click any component for part number, pin connections, connected nets. BGA pad-level visibility for micro-soldering repair
Bitmap View	High-resolution photographs of actual PCBs for visual reference — identify component markings, check for damage, compare against schematic
Signal Tracing	Highlight complete signal paths across PCB and schematic. Trace power rails, data buses (I2C, SPI, MIPI), and control signals
Component Search	Search by IC part number, component value, or net name for instant location

Device Coverage

Apple Devices (Primary Focus)

iPhone: 15 Pro Max/15 Pro/15/15 Plus through iPhone 6 — full schematic + board view for every model
iPad: iPad Pro (M1/M2/M4), iPad Air, iPad Mini, standard iPad — all generations
MacBook: MacBook Pro 14"/16" (M1/M2/M3 Pro/Max), MacBook Air M1/M2/M3
Apple Watch: Series 9/8/7/6/5/4 — specialized board view for the small Watch PCB

Android Devices

Samsung Galaxy: S/A/M/Note/Z/Tab series
Xiaomi, Huawei, Oppo, Vivo, OnePlus, Realme

Laptops

Apple MacBook: Intel and Apple Silicon boards
PC Laptops: Select HP, Dell, Lenovo, ASUS motherboard schematics

JCID Ecosystem

JCID Schematic integrates with JCID's hardware products for a complete Apple repair workflow:

JCID V1SE/JC Pro1000S: NAND programmers for iPhone storage chip data transfer and True Tone/Face ID calibration
JCID Face ID repair module: Hardware for reprogramming Face ID components after screen replacement
JCID battery boards: Battery activation and charging boards for testing

JCID Schematic uses a time-based subscription with unlimited access during the subscription period.

View JCID Schematic at Code-GSM

How to Use JCID Schematic: Step-by-Step

Purchase a JCID subscription from Code-GSM
Download and install JCID Schematic software
Log in
Search for your device — supports phones, tablets, and laptops
Navigate the schematic: Zoom, pan, click components for details
Use Board View for physical component location on the PCB
Trace signal paths to diagnose faults

Tips

JCID covers both mobile phones and computers — useful for shops doing laptop board repair too
JCID also makes hardware tools (battery testers, face ID programmers, etc.) — the schematic subscription is separate
Use the integrated component database to find replacement part numbers

Common iPhone Repair Diagnostics with JCID Schematic

Fault	JCID Schematic Approach
iPhone not powering on	1. Open Board View for your iPhone model. 2. Locate PMIC (Tigris/Maverick/Hazel for newer iPhones). 3. Open schematic PMIC section. 4. Test VBAT at battery connector (should show ~4.0–4.2V). 5. Trace PP_BATT_VCC → PP_VCC_MAIN through PMIC output. Short diode reading on PP_VCC_MAIN indicates a shorted rail or component
iPhone not charging	Locate USB-C or Lightning connector section. Trace VBUS → TIGRIS (Tristar/Hydra IC on older models). Check CC1/CC2 lines. Verify BVDD output from PMIC to charging IC. Many "no charge" faults are failed Tristar/Hydra ICs
No Touch ID / Face ID	For Face ID: find FPCCON connector in schematic. Trace Face ID module power rails and I2C communication lines (SDA/SCL) back to AP. Note: Face ID requires calibrated pairing — hardware signals must be intact AND software pairing valid
No WiFi / Bluetooth	Locate WLAN/BT combo chip (USI, Murata). Check: 1) 1.8V VDD from PMIC. 2) 26MHz or 40MHz clock from TCXO. 3) Antenna connector and RF matching circuit. 4) UART or PCIe bus to AP. Replace combo chip if VDD and clock are confirmed good
No SIM card detected	Trace SIM socket → SIM controller (found in baseband section). Check SIM_VDD, SIM_CLK, SIM_DATA, SIM_RST. Bent/corroded SIM tray pins cause intermittent SIM detection — visible in both Board View photograph and schematic pin map

Frequently Asked Questions

Q: Does JCID Schematic cover all iPhone 15 models including Pro Max?
A: Yes — JCID has full schematic + board view coverage for iPhone 15, 15 Plus, 15 Pro, and 15 Pro Max. MacBook Pro M3 series is also included.

Q: Can JCID Schematic be used offline?
A: JCID Schematic requires an internet connection while viewing schematics (server-side). Some versions may allow caching of recent views for limited offline access.

Q: Is the JCID hardware (JC Pro1000S) included with the Schematic subscription?
A: No — the Schematic subscription is for the software only. JCID hardware tools (Nand programmers, battery boards) are sold separately.

Q: Which is better: JCID Schematic, Borneo, or XinZhiZao?
A: JCID has the strongest Apple iPhone and MacBook coverage. Borneo has a large general database including Android brands. XinZhiZao is popular for Chinese market Android brands. Many repair shops subscribe to multiple platforms for full coverage.

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