Mitsubishi C3470 14-inch CRT to LCD Upgrade Guide
The Mitsubishi C3470 is a 14-inch colour CRT display module built by Mitsubishi and fitted to Mazak Mazatrol controls. The same physical display also carries the Mazak part number CD1472-D1M, which is why a search for either number lands on the same unit β they are two names for one display, not two products.
That dual numbering is the single most common source of confusion when ordering a replacement. This guide sets out what the C3470 actually is, how it differs from the FANUC-style displays (it runs on AC mains, not DC 24V, and uses a different connector), and exactly what the Kongto LCD module changes.
C3470 / CD1472 Cross-Reference
Use the table to match the marking on your display to the right replacement. All entries below are the same 14-inch colour CRT family fitted to Mazak Mazatrol systems.
| Marking on Display | Brand of Record | CRT Type | Interface | Supply | Replacement |
|---|---|---|---|---|---|
| Mitsubishi C3470 | Mitsubishi | 14" Colour CRT | Mazak 3-row 15-pin (10-pin used) | AC 110V-220V | $350 |
| Mazak CD1472-D1M | Mazak | 14" Colour CRT | Mazak 3-row 15-pin (10-pin used) | AC 110V-220V | $350 |
| Mazak C5470NS | Mazak | 14" Colour CRT | Mazak 3-row 15-pin | AC 110V-220V | See product page |
| Mazak DR5614 | Mazak | 14" Colour CRT | Mazak 3-row 15-pin | AC 110V-220V | See product page |
If your label reads C5470, C5470NS or DR5614, use the matching product page instead β those are separate listings with their own module configuration. The C3470 and CD1472-D1M entries above are the pair that share one module.
Mazak Mazatrol Systems Using the C3470 / CD1472-D1M
| System Family | Display Fitted | Upgrade Path |
|---|---|---|
| Mazatrol systems with a C3470 display | Mitsubishi C3470 14" colour CRT | 12.1" TFT-LCD module, $350 |
| Mazatrol systems with a CD1472-D1M display | Mazak CD1472-D1M 14" colour CRT | 12.1" TFT-LCD module, $350 |
Because Mazak sourced the display from Mitsubishi and applied its own part number, the control hardware behind the display is identical across both listings. Confirm the display marking, not the machine badge, when ordering.
C3470 CRT vs Kongto LCD β Technical Comparison
| Specification | Original Mitsubishi CRT | Kongto LCD Upgrade |
|---|---|---|
| Display Technology | 14-inch Colour CRT | 12.1-inch TFT-LCD Industrial Panel |
| Resolution | 640x480 | 800x600 |
| Brightness | ~200 cd/m2 | 400 cd/m2 |
| Lifespan | ~15,000 hrs | 50,000+ hrs |
| Power Supply | AC 110V-220V | AC 110V-220V (compatible) |
| Interface | Mazak 3-row 15-pin (10-pin used) | Mazak 3-row 15-pin (10-pin, direct compatible) |
| Signal Type | RGB analog | RGB analog |
| Safety | High voltage (10-15kV) | Low voltage DC |
| Weight | β | 3.5 kg |
Three rows separate this upgrade from a FANUC-style retrofit. The C3470 is an AC mains display rated 110V-220V, not a DC 24V unit β so the module keeps the mains input rather than asking for a new power run. The signal is RGB analog over a Mazak 3-row 15-pin connector with 10 pins populated, which is a different interface from the 20-pin Honda used on FANUC displays. And the assembly is heavier, at 3.5 kg, reflecting the larger steel chassis Mazak mounts it in.
CRT Failure Symptoms on Mazak Displays
| Symptom | Likely Cause | Repairable? | Solution |
|---|---|---|---|
| Colour cast or tint across the whole screen | Gun imbalance or shadow mask distortion | No | LCD upgrade |
| Coloured fringes on text and edges | Convergence drift in the deflection yoke | Rarely, by adjustment | LCD upgrade |
| Dim picture despite brightness at maximum | Phosphor and cathode aging | No | LCD upgrade |
| Black screen with the control still running | Flyback transformer or high-voltage failure | Sometimes | LCD upgrade (removes HV section) |
| Intermittent picture when the cabinet warms up | Cracked solder joints on the display board | Sometimes | LCD upgrade (permanent) |
| Whine or arcing from the display housing | Aging high-voltage insulation | No | LCD upgrade (safety) |
On a Mazatrol machine an intermittent display is worse than a dead one, because the operator keeps trusting a screen that drops out mid-cycle. If the picture comes and goes with cabinet temperature, treat it as a failing display rather than a nuisance, and plan the swap before it fails inside a job.
Mitsubishi and Mazak LCD Upgrade Products
14" Colour CRT to 12.1" TFT $350 Mazak CD1472 Series
14" Colour CRT to 12.1" TFT $350 Mitsubishi C5470
14" Colour CRT to 12.1" TFT $480
Installation Steps
1. Isolate the Cabinet
Switch off the Mazak control and disconnect the machine from mains. This is an AC-powered display, so isolate at the cabinet supply, not at a DC rail.
2. Photograph the Label
Record the C3470 or CD1472-D1M marking and the cable entry before removal. This confirms the listing and gives a reference for reassembly.
3. Remove the CRT
Undo the four mounting screws and withdraw the 14-inch CRT from the bezel. Unplug the Mazak 3-row 15-pin cable and the AC supply leads. No soldering is required.
4. Fit the 12.1-inch Module
Mount the LCD module in the original frame. The screw pattern matches the CRT footprint and the panel sits behind the original bezel opening.
5. Reconnect and Check
Reconnect the 3-row 15-pin cable and the AC supply, then power the control. The picture appears without parameter changes; set brightness on the module.
Allow 10 to 15 minutes. Because the module keeps the original AC 110V-220V input and the original RGB analog signal path, the Mazatrol control is untouched β no parameters, no ladder changes, no re-homing.
Frequently Asked Questions
A: Either. They are the same 14-inch colour display under two numbering systems, and both take the same $350 module. Quote the marking printed on the display itself.
A: No. C5470 and C5470NS are separate listings with their own module configuration. Use the C5470NS product page if that is what your label reads.
A: No. The C3470 is an AC mains display rated 110V-220V, and the replacement is compatible with that same AC input.
A: Yes. Brightness rises from roughly 200 cd/m2 to 400 cd/m2, and resolution from 640x480 to 800x600, so text and graphics are noticeably sharper on the same screen size class.
A: Yes. The module is built to fit the original C3470 bezel opening using the original mounting screws and the original 3-row 15-pin cable.