Human Touch HT-135/136 Backrest Actuator Replacement

Introduction

These instructions detail the procedure for replacing the backrest actuator on Human Touch massage chairs. For repairs to be fully consistent with manufacturing practices, Human Touch requires the use of only factory-new parts and adherence to these repair instructions.

Tools Required

• Small Phillips-head screwdriver
• Short-handled Phillips-head screwdriver

Important: SAVE ALL REMOVED PARTS FOR USE DURING REASSEMBLY.

Preparation

GET READY

1. Push down on the backrest release lever, then fold the backrest forward onto the chair seat. [Diagram 1: Illustrates the backrest release lever and the backrest folded forward.]
2. Power off the chair and unplug it.

Removing the Actuator

1. Locate the connector box underneath the chair on the right-hand side. [Diagram 2: Shows the connector box location on the right side of the chair base.]
2. Using a small Phillips-head screwdriver, remove the two screws securing the connector box cover, then remove the cover.
3. Disconnect the larger of the two connectors inside.
4. Lying on your back underneath the right-hand side of the chair, locate the backrest actuator. [Diagram 3: Depicts the backrest actuator and its cable, viewed from the underside of the chair.]
5. Using a short-handled Phillips-head screwdriver, remove the five screws and their washers. Note: A short-handled screwdriver helps maintain a straight angle to prevent stripping screws.
6. Remove the actuator from the chair base.

Installing the New Actuator

1. Lying on your back underneath the right-hand side of the chair, place the new actuator into position on the bottom of the chair base, aligning all five mounting holes. Note: The backrest may have shifted after the actuator was removed, requiring slight adjustment to align the holes.
2. Replace the five screws and hand-tighten them.
3. Secure the screws using a short-handled Phillips-head screwdriver.
4. Reconnect the actuator cable.
5. Position the actuator cable connector inside the connector box, ensuring cables are in the cable guides.
6. Replace the connector box cover using a small Phillips-head screwdriver and the two screws previously removed.
7. Power on the chair and verify that the new actuator functions correctly.