A failing Hitachi Aloka ASU-1001 does not always mean buying a new probe. Use the fault table below to match what you are seeing on screen to a likely cause, then check what a repair assessment would need.
| Manufacturer | Hitachi Aloka |
|---|---|
| Model | ASU-1001 |
| Probe type | Convex array |
| Compatible systems | Aloka SSD-3500, Aloka SSD-4000 |
You will usually see the ASU-1001 running on Aloka SSD-3500, Aloka SSD-4000. Mention the console model with the fault description – connector and revision differences matter.
On convex probes such as the ASU-1001, the curved acoustic window wears unevenly under pressure-heavy scanning; lens condition is the first thing to check when image quality drops.
Common failure modes for the ASU-1001
Match what you are seeing against the table below. The right-hand column reflects how faults of this kind typically assess – the actual verdict always depends on the individual probe.
| What you see | Likely cause | Typically repairable? |
|---|---|---|
| Intermittent signal that changes as the cable moves | One or more conductors broken inside the cable bundle | Case by case |
| Strain relief separated, split or stiff | Flex fatigue where the cable meets the probe or connector | Usually repairable |
| Dark bands or dropout lines in the image | Failed transducer elements or a broken conductor in the cable | Case by case |
| Split seams or impact marks on the probe body | Impact damage; housing can usually be replaced or resealed | Usually repairable |
| Fuzzy or noisy image that cleaning does not fix | A worn lens surface or elements beginning to degrade | Case by case |
| Outer cable sheath showing cracks, kinks or staining | Jacket wear; conductors may still be intact underneath | Usually repairable |
| Air pockets or peeling visible on the acoustic lens | The lens separating from the acoustic stack underneath | Usually repairable |
Check these before you ship the probe
- Check the strain reliefs at both ends for splits, stiffness or separation from the cable.
- Run the system’s built-in probe test or element check if your console provides one.
- Photograph the complete manufacturer label – the exact revision matters for parts compatibility.
- Compare penetration and uniformity against a known-good probe on the same preset.
- Examine the connector for bent or corroded pins, cracks and a working locking mechanism.
Repair, exchange or replace — which applies to your ASU-1001
For the ASU-1001, think in terms of damage depth: surface and cable-level faults are usually repairable at a fraction of replacement cost; acoustic stack failures are evaluated case by case; extensive element loss generally means replacement. Send the symptoms and photos first – that determines the path before anything ships.
What we need to quote your ASU-1001 repair
- A clear photo of the complete manufacturer and model label on the probe
- A description of the fault: what you see on screen and when it started
- The ultrasound system (console) the probe is used with
- Screenshots or photos of the image problem, if the fault is visual
- Photos of any physical damage – lens, housing, cable or connector
Product imagery on this page is representative of the ASU-1001 probe family and is not a photograph of your specific unit. This page does not claim OEM authorization or universal compatibility. Repair feasibility, turnaround and commercial terms are confirmed in writing after assessment of the actual probe.






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