1. Introduction
This manual provides comprehensive instructions for the safe and efficient assembly, operation, and maintenance of your Chief NEC 100013383 Pdmhm-L Mobile Display Cart, Model LPAUB. Please read this manual thoroughly before installation and use to ensure proper functionality and to prevent damage or injury. Keep this manual for future reference.

Image 1.1: The Chief NEC Pdmhm-L Mobile Display Cart. This image shows the complete mobile display cart with its central column, stable base with wheels, and the display mounting bracket at the top.
2. Safety Information
Observe the following safety precautions to reduce the risk of injury or damage to the product:
- Weight Capacity: Do not exceed the maximum weight capacity specified for the display mount. Overloading can cause instability and potential collapse.
- Stability: Ensure the cart is on a level surface before mounting a display. Always lock the wheels when the cart is stationary to prevent accidental movement.
- Assembly: Follow all assembly instructions carefully. Incorrect assembly can lead to product failure. Use appropriate tools and ensure all fasteners are securely tightened.
- Moving the Cart: When moving the cart, ensure the display is securely attached and any accessories are stable. Move slowly and carefully, especially over uneven surfaces.
- Cable Management: Route all cables safely to prevent tripping hazards and to avoid damage to the cables or connected equipment.
- Children: Keep children away from the assembly area. This product contains small parts that could be a choking hazard.
3. Package Contents
Verify that all components are present before beginning assembly. If any parts are missing or damaged, contact your supplier immediately.
- Mobile Cart Base with Wheels
- Vertical Column Assembly
- Display Mounting Bracket (VESA compatible)
- Hardware Kit (screws, washers, spacers for display mounting)
- Cable Management Clips/Channels
- Assembly Tools (e.g., Allen wrenches)
- Instruction Manual
4. Setup and Assembly
Assembly typically requires two people due to the size and weight of components. Ensure you have adequate space and all necessary tools.
4.1. Assemble the Base
- Unpack all components and lay them out on a clean, flat surface.
- Attach the support legs to the central base unit. Ensure all bolts are securely tightened.
- Install the locking caster wheels into the designated slots on the base legs. Ensure they are firmly seated.
4.2. Attach the Vertical Column
- Carefully lift the vertical column and align it with the mounting point on the assembled base.
- Secure the column to the base using the provided bolts and washers. Tighten all fasteners firmly.
4.3. Install the Display Mounting Bracket
- Attach the VESA-compatible display mounting bracket to the top of the vertical column.
- Ensure the bracket is oriented correctly for your desired display position (horizontal or vertical).
- Secure the bracket with the provided hardware.

Image 4.1: The mobile display cart with a display mounted horizontally. This image illustrates the cart with a flat-panel display attached to the mounting bracket in a landscape orientation.

Image 4.2: The mobile display cart with a display mounted vertically. This image shows the cart with a flat-panel display attached to the mounting bracket in a portrait orientation.
4.4. Mount the Display
- Attach the VESA adapter plates (if required by your display) to the back of your display using the appropriate screws from the hardware kit. The cart supports VESA 75x75 and larger patterns suitable for up to 40-inch displays.
- With assistance, carefully lift the display and hook it onto the mounting bracket on the cart.
- Secure the display to the bracket using the safety screws or locking mechanisms provided. Ensure the display is firmly seated and cannot be accidentally dislodged.
4.5. Cable Management
Utilize the integrated cable management channels or clips along the vertical column to route power and video cables neatly and safely. This prevents tangles and reduces tripping hazards.

Image 4.3: The mobile display cart with an optional shelf and PC enclosure. This image demonstrates the cart with additional accessories, including a shelf for peripherals and an enclosure for a small form-factor PC or media player, highlighting cable routing possibilities.
5. Operating Instructions
5.1. Moving the Cart
- Unlock all caster wheels before attempting to move the cart.
- Grasp the cart firmly by the column or base and push/pull it slowly to its desired location.
- Avoid sudden movements or pushing the cart over obstacles that could cause it to tip.
- Once in position, lock all caster wheels to prevent accidental movement.
5.2. Adjusting Display Height
The vertical column allows for height adjustment. Refer to the specific mechanism on your cart (e.g., spring-assisted, manual pin lock) for detailed instructions. Always ensure the display is stable and locked at the desired height before use.
5.3. Rotating the Display
The display mount allows for rotation (e.g., from landscape to portrait). Loosen any locking mechanisms, carefully rotate the display, and then re-secure it in the new orientation.
6. Maintenance
- Cleaning: Clean the cart surfaces with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish.
- Fastener Check: Periodically check all bolts and screws to ensure they remain tight. Re-tighten as necessary.
- Wheel Inspection: Inspect caster wheels for debris or damage. Clean or replace as needed to ensure smooth movement.
- Cable Integrity: Regularly inspect cables for wear or damage. Replace any damaged cables immediately.
7. Troubleshooting
7.1. Cart is Unstable
- Ensure the cart is on a level surface.
- Verify that all assembly bolts are securely tightened.
- Check that the display weight does not exceed the cart's maximum capacity.
7.2. Wheels Not Rolling Smoothly
- Check if the caster wheels are locked. Unlock them if necessary.
- Remove any debris (e.g., hair, lint) from the wheel axles.
- Ensure the wheels are properly seated in their sockets.
7.3. Display Not Secure
- Verify that the VESA adapter plates are correctly attached to the display.
- Ensure the display is properly hooked onto the mounting bracket.
- Confirm that all safety screws or locking mechanisms are engaged.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Chief |
| Manufacturer | NEC |
| Model Name | 100013383 Pdmhm-L |
| Model Number | LPAUB |
| Compatible Devices | Television |
| Standing Screen Display Size | Up to 40 Inches |
| Mounting Type | Wall Mount (referring to display mount type, cart is mobile) |
| Movement Type | Rotate |
| Color | Blackone |
| Product Dimensions | 121.41 x 81.28 x 197.87 cm; 36.74 kg |
| VESA Standard | VESA 75 x 75 (and larger compatible with 40-inch displays) |
| UPC | 841872155951 |
9. Warranty and Support
Warranty information for the Chief NEC 100013383 Pdmhm-L Mobile Display Cart (Model LPAUB) is not provided within this manual. For details regarding warranty coverage, terms, and conditions, please contact your original point of purchase or the manufacturer, Chief, directly. Support resources, including additional documentation or technical assistance, can typically be found on the Chief official website.





