3Table of ContentsAbout the Lift Chair Service Guide........…………………………………………………...……….4Lift Chair Components…………………………………………………………………….............4-6General Trouble Shooting and Tools Required..........................................................................7Models Quick Reference........………………………………………………………………………..8Replacement Instructions..............……………………………………………………………9-21Smart Tek® Hand Control.....………………………………………………………………………..9Hand Control Extension............................................................................................................9Back Assembly........…………………………………………………………………………………10Control Box..............…………………………………………………………………………………11Lift Motor.........……………………………………………………………………………………10-11Lift Frame............……………………………………………………………………………………11Arm Assembly...........…………………………………………………………………………....12-13Scissor Mechanism...........……………………………………………………………………...13-14Recline Bar............……………………………………………………………………………....14-15Seat Assembly...........…………………………………………………………………………...15-16Recline Straps...........……………………………………………………………………………….16Fork Head...............................................................................................................................17Spacer Bar.........................................................................................................................18-19Headrest Motor (Model: UC680).............................................................................................20Head Pillow (Model: UC680)...................................................................................................21Scissor Mechanism Parts..........…………………………………………………………….......22OKIN Lift Motor Comparison Old Style vs. New Style..............................................................23Electrical Systems...........……………………………………………………………………...24-35Heat and Massage........................………………………………………………………….....36-42Trouble Shooting with Smart Tek®............………………………………………………………..43Lift Frames................……………………………………………………………………………44-67StellarComfort ReclineStellarComfort ReclinePower Connections...........…………………………………………………………………….........70Back Installation...........……………………………………………………………………….....71-72Hand Controls...........…………………………………………………………………………….73-76Smart Tek® LED lighting system............................................................................................77AutoFlex Hand Control and Parts.............................................................................................78AutoFlex Wiring Diagram..........................................................................................................79Shiatsu Hand Control and Parts...............................................................................................80Shiatsu Component Replacement.......................................................................................81-82Shiatsu Wiring Diagram............................................................................................................83UC486 Hand Control and Wiring…………………………………………..………………………84Footrest Extension Installation.............................................................................................85-86Grease Points..........………………………………………………………………………………....87Procedure for Lubricating Recline Bars....................................................................................88Lift Chair Cut Away..........…………………………………………………………………………...89Lift Chair Boxing Instructions..........…………………………………………………………….90-91UC540M-26, UC542M-26, UC542-ME6 Boxing Instructions..............................................92-93