LG G3 VS985 Service Manual PDF

The LG G3 VS985 is a Verizon-specific variant of the popular LG G3 smartphone, featuring a 5.5-inch Quad HD IPS display, Qualcomm Snapdragon 801 processor, 3GB RAM, 32GB storage, 13MP OIS+ camera with laser autofocus, and Verizon LTE connectivity. This service manual covers disassembly, component identification, troubleshooting, repair procedures, and technical specifications for technicians and repair professionals.

1. Device Overview 2. Technical Specifications 3. Disassembly Procedures 4. Component Identification 5. Troubleshooting Guide 6. Repair Instructions 7. Electrical Schematics 8. Parts List 9. Safety Precautions 10. Tools Required 11. Contact Information

Device Overview

Key components: 5.5-inch Quad HD IPS LCD display, Qualcomm Snapdragon 801 MSM8974AC processor, 3GB LPDDR3 RAM, 32GB internal storage, 13MP rear camera with OIS+ and laser autofocus, 2.1MP front camera, 3000mAh removable battery.

Component	Description
Display Assembly	5.5-inch Quad HD IPS LCD with Gorilla Glass 3
Main Board	Qualcomm MSM8974AC, 3GB RAM, 32GB storage
Camera Module	13MP with OIS+, laser autofocus, dual-LED flash
Battery	3000mAh Li-Polymer removable battery
Charging Port	Micro USB 2.0 with Quick Charge 2.0
Audio Jack	3.5mm stereo headphone jack
Buttons	Rear-mounted power/volume buttons
Connectivity	Verizon LTE, Wi-Fi 802.11ac, Bluetooth 4.0
Sensors	Accelerometer, gyro, proximity, compass
SIM Slot	Micro-SIM card slot

Technical Specifications

Display: 5.5-inch Quad HD IPS LCD (2560x1440, 538ppi)
Processor: Qualcomm Snapdragon 801 MSM8974AC 2.5GHz quad-core
Memory: 3GB LPDDR3 RAM, 32GB internal storage
Camera: 13MP rear with OIS+, laser AF; 2.1MP front
Battery: 3000mAh removable Li-Polymer
Connectivity: Verizon LTE, CDMA, Wi-Fi 802.11ac, Bluetooth 4.0
OS: Android 4.4.2 KitKat (upgradable to 6.0 Marshmallow)
Dimensions: 146.3 x 74.6 x 8.9 mm
Weight: 149g

Disassembly Procedures

Follow these steps for safe disassembly. Ensure device is powered off before beginning.

Remove back cover: Press release button and lift cover from bottom edge.
Remove battery: Lift battery from compartment using pull tab.
Remove SIM card: Push SIM tray ejector pin into hole to release tray.
Remove screws: Use T5 Torx screwdriver to remove 10 screws from frame.
Separate display assembly: Use plastic opening tools to carefully separate display from mid-frame.
Disconnect flex cables: Carefully disconnect display, digitizer, and camera flex cables.

WARNING! Use proper tools and anti-static precautions. Avoid damaging flex cables and connectors.

Component Identification

Main board components and their locations for repair reference.

Component	Location	Part Number
Power Management IC	Upper left corner	PM8941
RF Transceiver	Center right	WTR1625L
Audio Codec	Lower center	WM8994
Wi-Fi/BT Module	Upper right	BCM4339
Camera Connector	Top edge	FPC-20P
Display Connector	Center left	FPC-30P

Troubleshooting Guide

Symptom	Possible Cause	Corrective Action
No power	Battery/charging circuit	Check battery connection; test charging port; replace PMIC if needed
No display	Display/LCD damage	Test with known good display; check flex cable connection
Touch not working	Digitizer damage	Replace digitizer; check digitizer flex cable connection
No cellular signal	Antenna/RF circuit	Check antenna connections; test RF components; replace main board
Camera not working	Camera module	Replace camera module; check flex cable; clean connector
Overheating	Processor/thermal paste	Reapply thermal paste; check for short circuits; replace main board

Repair Instructions

Step-by-step repair procedures for common issues.

Display Replacement: Remove back cover, battery, screws; separate display; disconnect flex cables; install new display.
Battery Replacement: Remove back cover; lift battery using pull tab; install new battery.
Charging Port Replacement: Full disassembly required; desolder old port; solder new port.
Camera Replacement: Remove back cover, battery, screws; disconnect camera flex; install new camera.
Main Board Replacement: Complete disassembly; transfer all components to new main board.

CAUTION! Use ESD protection and proper soldering equipment for board-level repairs.

Electrical Schematics

Reference schematics for board-level troubleshooting and repair.

Power distribution circuit
RF and cellular circuit
Audio codec and amplifier circuit
Display and touch controller circuit
Camera and sensor circuits
Charging and battery management circuit

Note: Schematics available in full PDF manual download.

Parts List

Part Name	Part Number	Description
Display Assembly	EAC64109601	Complete LCD with digitizer
Main Board	EAX65757601	VS985 main logic board
Battery	BL-53YH	3000mAh Li-Polymer
Rear Camera	EAC64109001	13MP with OIS+
Front Camera	EAC64109101	2.1MP front-facing
Charging Port	EAC64109501	Micro USB assembly
Back Cover	EAC64109401	Rear housing assembly

Safety Precautions

Essential safety measures for repair technicians.

Always power off device and remove battery before disassembly
Use ESD wrist strap when handling electronic components
Keep work area clean and organized
Use proper tools to avoid damage to components
Dispose of damaged batteries properly
Avoid touching sharp edges during disassembly

WARNING! Lithium batteries can be hazardous if punctured or damaged.

Tools Required

T5 Torx screwdriver
Plastic opening tools
Spudger and tweezers
ESD-safe work mat and wrist strap
Soldering station with fine tip
Multimeter for electrical testing
Heat gun for adhesive removal
Microscope for board inspection

Contact Information

LG Electronics USA, Inc. - 1000 Sylvan Avenue, Englewood Cliffs, NJ 07632

Technical Support: 1-800-243-0000

Website: www.lg.com/us

Service Centers: Visit LG website for authorized service center locations

Warranty: 1-year limited warranty from date of purchase