LG AS986 Service Manual

The LG AS986 is a high-performance smartphone featuring advanced mobile technology, Qualcomm Snapdragon processor, high-resolution display, multiple camera systems, and comprehensive connectivity options. This service manual provides detailed technical information for service personnel, including disassembly procedures, troubleshooting guides, component specifications, and repair instructions.

1. Product Overview 2. Technical Specifications 3. Disassembly Procedures 4. Component Locations 5. Troubleshooting Guide 6. Circuit Diagrams 7. Replacement Parts 8. Software Recovery 9. Safety Precautions 10. Service Tools 11. Warranty Information

Product Overview

Key components: Main board assembly, display module, battery, camera modules, charging port, speaker assembly, and various sensors.

Component	Description
Main Board	Qualcomm Snapdragon processor with integrated modem
Display Assembly	5.5-inch IPS LCD touchscreen with Gorilla Glass protection
Battery	Li-Polymer 3000mAh removable battery
Rear Camera	13MP with autofocus and LED flash
Front Camera	5MP for video calls and selfies
Charging Port	Micro USB 2.0 with OTG support
Speaker	Mono speaker with amplifier circuit
Sensors	Accelerometer, proximity, light, gyroscope
Connectivity	Wi-Fi 802.11ac, Bluetooth 4.1, NFC, GPS
SIM/Memory	Dual SIM slots with microSD expansion

Technical Specifications

Model: LG AS986
Display: 5.5-inch IPS LCD, 1920x1080 resolution
Processor: Qualcomm Snapdragon 617 octa-core
Memory: 3GB RAM, 32GB internal storage
Cameras: Rear 13MP, Front 5MP
Battery: 3000mAh Li-Polymer
OS: Android 6.0 Marshmallow
Connectivity: 4G LTE, Wi-Fi, Bluetooth, NFC
Dimensions: 151 x 76 x 8.2 mm
Weight: 155 grams

Disassembly Procedures

Follow these steps carefully for proper disassembly and reassembly.

Power off the device and remove SIM card tray.
Remove back cover using plastic opening tool.
Disconnect battery connector from main board.
Remove screws securing main board and peripheral components.
Carefully disconnect flex cables for display, cameras, and buttons.
Remove main board assembly from chassis.
Separate display assembly from mid-frame.

WARNING! Use proper ESD protection. Handle components with care to avoid damage.

Component Locations

Main board components and their physical locations for service reference.

Component	Location	Part Number
Power IC	Upper left corner of main board	PMI8952
RF Transceiver	Center right section	WTR2965
Audio Codec	Lower left near connector	WCD9335
Camera Connectors	Top edge of main board	J2101, J2102
Display Connector	Center bottom edge	J2001

Troubleshooting Guide

Common issues and their solutions for service technicians.

Symptom	Possible Cause	Corrective Action
No power	Battery, charging circuit	Check battery voltage; test charging port; replace power IC if needed
No display	Display, flex cable, main board	Test with known good display; check flex cable connection; measure display voltages
No touch response	Touch digitizer, main board	Replace digitizer; check touch controller on main board
Camera not working	Camera module, software	Test with known good camera; update software; check camera connector
No network	Antenna, RF section	Check antenna connections; test RF components; reprogram device

Circuit Diagrams

Reference schematics for main board sections and power distribution.

Power management circuit
RF and baseband section
Audio amplifier circuit
Display and touch interface
Camera module connections
Charging circuit diagram

Note: Refer to detailed schematics in appendix for complete circuit analysis.

Replacement Parts

Authorized replacement parts with corresponding part numbers.

Component	Part Number	Description
Display Assembly	EAS654321	Complete LCD with touch digitizer
Battery	BAT345678	Original 3000mAh Li-Polymer
Rear Camera	CAM987654	13MP with autofocus
Main Board	MB123456	Complete main board assembly
Charging Port	USB234567	Micro USB assembly with flex

Software Recovery

Procedures for software troubleshooting and recovery.

Enter recovery mode: Power off, then hold Volume Down + Power.
Factory reset: Use recovery menu to wipe data/cache.
Firmware flash: Use LG Flash Tool with official KDZ file.
IMEI restoration: Use authorized tools for baseband repair.

CAUTION! Backup user data before software procedures. Use only official firmware.

Safety Precautions

Essential safety guidelines for service personnel.

Always use ESD protection when handling components
Disconnect battery before performing any repairs
Use only authorized replacement parts
Follow proper battery handling procedures
Keep work area clean and organized
Use appropriate tools for each procedure

WARNING! Lithium batteries can be hazardous if mishandled.

Service Tools

Recommended tools for servicing LG AS986.

Tool	Purpose
ESD wrist strap	Static protection
Plastic opening tools	Case disassembly
Precision screwdrivers	Component removal
Spudger tool	Flex cable disconnection
Heat gun	Display separation
Multimeter	Circuit testing

Warranty Information

LG standard warranty terms and service conditions.

Warranty Period: 12 months from date of purchase
Coverage: Manufacturing defects and component failures
Exclusions: Physical damage, liquid damage, unauthorized modifications
Service Centers: Authorized LG service locations only
Support: Contact LG customer service for warranty claims

For technical support: LG Electronics Service Division - 1-800-243-0000