LG AS985 Service Manual

The LG AS985 is a high-performance mobile device featuring advanced communication capabilities, robust hardware specifications, and comprehensive service features. This manual provides detailed information for service technicians including technical specifications, disassembly procedures, troubleshooting guidelines, and maintenance instructions to ensure proper servicing and repair of the device.

Technical Specifications

Complete technical specifications and hardware details for the LG AS985 device.

Feature	Specification
Model	LG AS985
Network	4G LTE, CDMA, GSM
Display	5.5-inch HD IPS LCD
Processor	Quad-core 2.5GHz
Memory	3GB RAM, 32GB Storage
Camera	13MP Rear, 5MP Front
Battery	3000mAh Li-ion
Connectivity	Wi-Fi, Bluetooth 4.0, GPS
Operating System	Android 6.0 Marshmallow
Dimensions	151 x 76 x 8.9 mm

Safety Precautions

Essential safety guidelines for service technicians.

1. Always disconnect power source before servicing.
2. Use approved tools and equipment for repairs.
3. Handle lithium-ion batteries with extreme care.
4. Work in static-free environment using ESD protection.
5. Follow proper disposal procedures for components.

WARNING! Failure to follow safety procedures may result in personal injury or device damage. Always use proper personal protective equipment.

Disassembly Procedures

Step-by-step disassembly instructions for the LG AS985.

1. Power off device and remove SIM card tray.
2. Remove rear cover using plastic opening tools.
3. Disconnect battery connector from main board.
4. Remove motherboard screws and carefully lift board.
5. Disconnect display and camera flex cables.
6. Remove display assembly from front housing.

CAUTION! Use proper tools to avoid damaging components. Follow sequence precisely to prevent component damage.

Component Identification

• Main Board: Contains processor, memory, and primary circuitry.
• Display Assembly: LCD panel with digitizer and front camera.
• Battery: 3000mAh lithium-ion rechargeable battery.
• Camera Modules: 13MP rear camera and 5MP front camera.
• Audio Components: Speaker, microphone, and headphone jack.
• Connectivity: Wi-Fi/Bluetooth module, GPS antenna.
• Buttons & Sensors: Power/volume buttons, proximity sensor.

Circuit Diagrams

Detailed circuit schematics and board layouts.

Power Circuit: Battery management, charging circuit, voltage regulation.

RF Circuit: Cellular, Wi-Fi, and Bluetooth radio circuits.

Audio Circuit: Speaker, microphone, and audio codec circuits.

Display Circuit: LCD driver, backlight, and touch controller.

Refer to separate schematic diagrams for complete circuit details and component values.

Troubleshooting Guide

Common issues and diagnostic procedures.

Symptom	Possible Cause	Corrective Action
No power	Battery/charging circuit	Check battery voltage; test charging port; replace power IC.
No display	LCD/digitizer damage	Test display connector; replace LCD assembly; check display IC.
No network	RF circuit/antenna	Check antenna connections; test RF components; replace RF module.
Camera not working	Camera module/circuit	Test camera flex cable; replace camera module; check camera IC.
Overheating	Processor/battery issue	Check thermal paste; test processor; replace battery if swollen.

Replacement Parts

Authorized replacement components and part numbers.

1. Display Assembly: LG-AS985-DSP-001
2. Battery: LG-AS985-BAT-001
3. Main Board: LG-AS985-MB-001
4. Camera Module (Rear): LG-AS985-CAM-R-001
5. Camera Module (Front): LG-AS985-CAM-F-001
6. Housing Assembly: LG-AS985-HSG-001

Note: Use only authorized LG replacement parts to maintain device integrity and warranty coverage.

Software Recovery

Software troubleshooting and recovery procedures.

1. Enter recovery mode: Power off, then hold Volume Down + Power.
2. Factory reset: Use recovery menu to wipe data/cache.
3. Firmware flash: Use LG Flash Tool with official firmware.
4. Software update: Download latest firmware from LG support.

Tip: Always backup user data before performing software recovery procedures.

Testing Procedures

Post-repair testing and quality assurance.

• Functional Test: Verify all hardware components operational.
• Network Test: Test cellular, Wi-Fi, and Bluetooth connectivity.
• Battery Test: Verify charging and battery life performance.
• Display Test: Check for dead pixels and touch responsiveness.
• Audio Test: Verify speaker, microphone, and headphone functionality.

Warranty Information

Warranty terms and service policies.

Standard warranty: 12 months from date of purchase. Service warranty: 90 days on repaired components. Warranty void if device shows signs of liquid damage, physical abuse, or unauthorized modifications. Keep original proof of purchase for warranty claims.

Contact Information

LG Electronics support and service contacts.

LG Customer Support: 1-800-243-0000
LG Service Website: www.lg.com/us/support
Email Support: [email protected]
Authorized Service Centers: Visit LG website for locations

Service Hours: Monday-Friday 8:00 AM - 9:00 PM EST