Epson 1390 Carriage Return Motor Failure: Does Adding a Fan Help, and What Else Prevents CR Motor Burnout?

Q: I watched your video about finding the best Epson 1390 CR motors. I'm dealing with CR motor failure issues and noticed you mentioned a fan. Is adding that fan really an option? I haven't seen that before, but it seems like a great idea-does it actually help?

A: 

Yes-the fan absolutely helps, and in many Epson 1390 setups (especially DTF/DTG conversions or heavy-duty printing), adding airflow can be one of the simplest ways to reduce repeat CR motor failures. But it works best when you combine it with a few other "must-do" mechanical checks, because overheating is often a symptom of excess load, not the root cause by itself.

Below is a detailed breakdown of why the CR motor fails, where the fan helps, and what else you should do so the new motor doesn't burn out again.

Why Epson 1390 CR Motors Fail So Often

On the Epson 1390, the CR motor drives the printhead carriage back and forth via a belt and geartrain. The motor is most likely to fail when it's forced to work harder than it was designed to.

The most common contributors are:

1) Excess friction on the carriage path (rails/rod)

If the carriage doesn't glide smoothly, the motor draws more current, runs hotter, and eventually weakens or fails. This friction can come from:

• Dry or dirty carriage rail/rod

• Old grease turning sticky (it can look "greasy" but still be high-friction)

• Ink mist, DTF powder residue, dust, or lint building up on the rod

• Worn bushings/bearings in the carriage assembly

What helps:

• Apply a light, appropriate grease to the rail and rod

• Keep the printhead carriage path clean and lubricated

• Manually slide the carriage (with power off) to confirm it moves smoothly with consistent resistance

This is one of the biggest reasons motors fail repeatedly even after replacement: the printer still has a mechanical drag problem, so the new motor gets punished the same way.

2) Heat buildup from long print sessions

DTF/DTG workflows often mean:

• Longer continuous duty cycles

• More frequent carriage movement

• Higher ambient heat inside the printer chassis

As heat rises, motor efficiency drops, current draw increases, and you can get a runaway situation where the motor is constantly operating near its stress limit.

Does Adding a Fan Help? Yes-Here's Why

A fan helps because it reduces internal temperatures around:

• The CR motor area

• The driver electronics nearby

• The general hot air trapped in the chassis during long runs

Lower temperatures can:

• Extend motor life

• Reduce thermal stress on gears and nearby parts

• Improve reliability during long print jobs

But here's the key point:
A fan doesn't fix the reason the motor is overheating. It mainly reduces the temperature after the motor is already working hard. That's why the best results come when you use a fan and reduce friction/load.

Practical fan guidance (conceptually)

• Aim airflow across the motor zone and out of the printer so heat doesn't just circulate.

• Secure wiring carefully and keep it away from moving parts (belt, carriage path).

• Don't introduce dust into sensitive areas-if the environment is dusty, consider filtered airflow.

The Most Important Preventative Fix: Lubrication and Carriage "Load" Reduction

Since you mentioned the fan-and yes it helps-the next most important steps are the ones you already flagged:

1) Grease the rail and rod correctly

• Clean first (remove old sticky residue).

• Apply a thin, even coat-too much grease attracts debris.

• After lubrication, slide the carriage across the full range to spread it evenly.

2) Keep the carriage assembly moving freely

Even if the rail looks fine, the carriage can bind due to:

• Belt tension issues

• Misalignment from wear or previous repairs

• Foreign debris on the belt teeth or pulley

If you feel "tight spots" while moving the carriage by hand, that's a warning sign. The motor will be forced to fight that tight spot repeatedly.

About the "Better Motor" Option and Gear Transfer

You're also correct that we're working on a better motor option. The main catch is exactly what you pointed out:

• It will likely require transferring the gear from the old motor to the new motor.

• Not everyone has the tools to do this safely (gear puller/press, proper support, and the technique to avoid cracking the gear or bending the shaft).

If the gear is damaged during transfer, it can introduce noise, backlash, binding, or premature failure-so it's not a beginner-friendly upgrade unless you have the right tools and are comfortable doing precision mechanical work.

Quick checklist to avoid repeat CR motor failures

If you want a simple "prevention stack," this is the order that matters most:

1. Reduce friction first: clean + lightly grease the rail/rod and confirm smooth carriage travel

2. Inspect belt/pulley path: check for debris, damage, or binding

3. Add cooling: the fan helps most when the system is already running smoothly

4. Upgrade motor (optional): best results, but gear transfer may require tools and skill

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems, so we're not able to provide remote troubleshooting, suggestions, or support for printer repairs. We do offer an in-person evaluation and repair service through our local diagnostic facility, printer repair service (https://bchtechnologies.com/printer-repair-service). Because demand is high, we operate on a first-come, first-served basis, and it can take a few weeks before we're able to accept a drop-off. Our services are set up to repair either an entire printer or specific parts, with clear instructions on how to proceed. That said, we recognize our rates aren't the most economical, so we strongly recommend self-help through online research. You can start by checking YouTube or visiting our channel homepage, BCH Technologies on YouTube (https://youtube.com/@bchtechnologies). To find topic-specific videos quickly, use the search icon next to "About" on the right-hand side of the menu bar. I receive dozens of requests every day asking for videos on specific issues, and after nine years of creating content, it's difficult to remember every single one-YouTube's search function is the fastest approach. Plus, YouTube may suggest other relevant videos from other creators that can also help.

Thanks again for reaching out and for supporting the channel. I'm glad you caught the fan detail-it really can make a difference, especially when paired with proper lubrication and a smooth carriage path.