SHIMADZU 228.24735-91 Pcb Board Lc Io 228-23684 228-23685 P/n

( Brand: Shimadzu ), ( Manufacturer Part Number: 228.24735-91 ), ( Part Type: Board )

Review SHIMADZU Assy Pcb Pc Board Pb i Lc io P/n

The **Shimadzu 228-24735-91, 228-23684, and 228-23685 PCB Boards (PB-I LC-IO)** are high-precision, custom-engineered printed circuit boards (PCBs) designed exclusively for Shimadzu s advanced liquid chromatography (LC) instrumentation, specifically the **Prominence LC-IO series**. These boards serve as critical interface and control components, facilitating seamless communication between the system s core hardware such as pumps, autosamplers, and detectors and the central processing unit (CPU). Manufactured to Shimadzu s stringent quality standards, these PCBs incorporate **high-density multilayer construction**, featuring finely routed signal and power traces optimized for minimal electromagnetic interference (EMI) and signal degradation. The **228-24735-91** is the primary logic board, housing essential microcontroller circuits, memory modules, and analog-to-digital converters (ADCs) that regulate chromatographic operations, while the **228-23684** and **228-23685** are specialized input/output (I/O) expansion boards tailored for analog and digital signal processing, respectively. These boards are equipped with **high-reliability surface-mount components (SMDs)**, including low-drift operational amplifiers, precision resistors, and high-speed MOSFETs, ensuring stable performance under the demanding conditions of high-pressure liquid chromatography (HPLC) and ultra-performance liquid chromatography (UPLC). The **PB-I LC-IO** series is built with **RoHS-compliant materials**, ensuring environmental safety and long-term durability, while its **gold-plated connectors** and **shielded vias** enhance signal integrity and reduce wear from repeated connections. These PCBs are integral to Shimadzu s **Prominence LC-IO** systems, enabling precise control of flow rates, pressure regulation, and detector response, making them indispensable for applications in pharmaceutical development, environmental analysis, and biotechnology research. Their modular design allows for easy integration into existing Shimadzu LC setups, ensuring compatibility with a wide range of detectors, columns, and software interfaces, such as Shimadzu s **LabSolutions** and **LCsolution** platforms. Whether used in routine analytical workflows or cutting-edge scientific research, these PCBs exemplify Shimadzu s commitment to **precision engineering and reliability**, delivering consistent performance for decades with minimal maintenance.

### **Analysis of Shimadzu PCB Board (Part Numbers: 228.24735-91, 228-23684, 228-23685 PB-I LC-IO)**

#### **Overview**

The Shimadzu **PB-I LC-IO** is a printed circuit board (PCB) used in Shimadzu s **Prominence LC-20 series** liquid chromatography systems. These boards control communication between the system s components, including the pump, autosampler, and detector modules. They are critical for maintaining system performance, data acquisition, and integration with external devices.

---

### **Pros of Buying a Replacement PCB**

1. **Compatibility and Reliability**

- These PCBs are **direct replacements** for the original Shimadzu boards, ensuring full compatibility with the LC-20 series (e.g., LC-20A, LC-20AT, LC-20AD).

- Shimadzu s proprietary design reduces the risk of **software/hardware incompatibility** issues that may arise with aftermarket or generic replacements.

- High-quality soldering and component selection minimize **electrical noise and signal degradation**, which is critical for accurate chromatographic data.

2. **Warranty and Support**

- Purchasing from **authorized Shimadzu distributors or service centers** often includes a **limited warranty** (typically 1 3 years), covering defects in materials or workmanship.

- Access to **Shimadzu s technical support** ensures proper installation, troubleshooting, and firmware updates if needed.

- Some distributors offer **on-site installation and testing**, reducing downtime.

3. **Long-Term Durability**

- Shimadzu PCBs are built to withstand **industrial-grade environmental conditions** (temperature fluctuations, humidity, and vibration), which is essential for laboratory settings.

- The use of **high-reliability components** (e.g., surface-mount resistors, capacitors, and connectors) reduces the likelihood of **early failure** compared to cheaper alternatives.

- The board s design supports **future firmware upgrades**, extending the lifespan of the LC system.

4. **Data Integrity and System Performance**

- The PCB manages **signal processing, communication protocols (e.g., RS-232, Ethernet), and integration with Shimadzu s software (LabSolutions, Class-VP)**.

- A faulty PCB can lead to **data corruption, failed injections, or inconsistent retention times**. A replacement ensures **consistent chromatographic performance**.

- Some models (e.g., 228-23685) include **enhanced I/O capabilities**, such as additional analog/digital ports for external sensors or actuators.

5. **Resale and Trade-In Value**

- Shimadzu equipment retains **higher resale value** when fully functional, including original components. A replaced PCB may improve the system s perceived value.

- Some leasing or financing programs require **original manufacturer parts** to maintain coverage.

---

### **Cons of Buying a Replacement PCB**

1. **High Cost**

- Shimadzu PCBs are **not inexpensive**. Prices typically range from **$1,500 to $3,500 USD**, depending on the model and supplier.

- The cost may be **prohibitive for small labs or budget-conscious users**, especially if the system is older and nearing end-of-life.

- Additional expenses may include **shipping, installation, and diagnostic fees** if purchased from a third party.

2. **Long Lead Times**

- Shimadzu does not stock all part numbers globally, leading to **extended wait times** (weeks to months) for delivery.

- Urgent replacements may require **express shipping**, further increasing costs.

- Some distributors may **discontinue support** for older part numbers, forcing users to rely on eBay or salvage markets with unknown reliability.

3. **Complex Installation and Testing**

- Proper **desoldering and resoldering** of connectors (risk of damage to traces or components).

- **Firmware reprogramming** (some Shimadzu boards require specific tools or software).

- **System calibration** post-installation to ensure accurate flow rates, pressure, and detector response.

- Labs without in-house service technicians may need to **outsource installation**, adding to costs.

4. **Potential for Counterfeit or Mismatched Parts**

- **Counterfeit PCBs** with poor-quality components.

- **Incorrect revision numbers** (e.g., a PCB for LC-20A instead of LC-20AT), leading to **software or hardware conflicts**.

- **Salvaged parts** from dismantled systems, which may have **hidden damage or wear**.

- Always verify the **part number, revision, and supplier authenticity** before purchasing.

5. **System Obsolescence**

- The **LC-20 series is nearing end-of-life**, with Shimadzu phasing out support for some models.

- Future **software updates or service contracts** may no longer be available, limiting long-term usability.

- Investing in a PCB replacement may be **less cost-effective** than upgrading to a newer system (e.g., LC-30A, Nexera series).

6. **Risk of Recurring Issues**

- If the original failure was due to **system-wide degradation** (e.g., power supply issues, poor grounding), replacing just the PCB may **not resolve underlying problems**.

- Some failures (e.g., **corroded connectors, damaged traces**) may persist unless the entire system is inspected.

---

### **Alternatives to Consider**

1. **Remanufactured or Refurbished PCBs**

- Some authorized service providers offer **remanufactured Shimadzu PCBs**, which are **tested, cleaned, and reconditioned** at a lower cost ( 30 50% cheaper).

- Risk: **Warranty may be limited**, and quality varies by provider.

2. **Aftermarket or Generic Replacements**

- **No Shimadzu warranty or support**.

- **Potential compatibility issues** with software or firmware.

- **Higher risk of failure** if not properly tested.

3. **System Upgrade Instead of Repair**

- If the LC-20 system is **frequently failing**, upgrading to a **newer Shimadzu model (e.g., LC-30A, Nexera X2)** may be more cost-effective long-term.

- **Better sensitivity, automation, and data handling**.

- **Longer warranty periods (5 10 years)**.

- **Compatibility with modern software and peripherals**.

4. **Rental or Leasing Options**

- Some companies offer **LC system rentals**, allowing labs to **test newer technology** without a large upfront investment.

- Useful for **short-term projects** or labs unsure about long-term needs.

---

### **Conclusion and Recommendation**

- **The system is critical for ongoing work**, and downtime is unacceptable.

- **You have access to an authorized Shimadzu distributor** with a reliable warranty.

- **The PCB is confirmed as the root cause** of the failure (diagnosed by Shimadzu or a certified technician).

- **The LC-20 system is still in active use**, and upgrading is not immediately feasible.

- **You are prepared for the cost and potential installation challenges**.

- **The system is old (pre-2010s)**, and Shimadzu support is limited.

- **Budget constraints** make the PCB cost prohibitive compared to upgrading.

- **Multiple components are failing**, suggesting a **system-wide issue** rather than a PCB problem.

- **You lack in-house technical expertise** for installation and troubleshooting.

- **Long-term reliability is a concern**, and you prefer newer technology.

1. **Verify the exact failure** (e.g., communication errors, power issues, detector misalignment) before purchasing a PCB. A **Shimadzu service technician** should diagnose the problem to avoid unnecessary expenses.

2. **Purchase from an authorized Shimadzu distributor** (e.g., **Shimadzu Scientific Instruments, LabLogic, or a local Shimadzu service center**) to ensure authenticity and warranty coverage.

3. **Budget for installation and testing** consider hiring a technician if in-house expertise is lacking.

4. **Assess the long-term viability** of the LC-20 system. If it is **frequently requiring repairs**, weigh the cost of the PCB against the **total cost of ownership (TCO)** of upgrading to a newer model.

5. **Document the replacement** for future reference, as Shimadzu may require proof of maintenance for warranty claims or service contracts.

- If the system is **recently purchased or still under warranty**, contact **Shimadzu s technical support** they may offer a **repair or replacement program** at a lower cost.

- If the system is **older but functional**, a **remanufactured PCB from a trusted provider** may be the most cost-effective solution.

- If the system is **failing repeatedly**, **upgrading

Details:

This PCB is ideal for use in various industrial and business applications where precise electronic control essential. The Shimadzu 228-23684 C assay 228-23685 PCB PC Board PB-I LC-IO is a printed circuit board designed specifically for electronic components and semiconductors. It is manufactured by the trusted brand Shimadzu, ensuring high quality and reliability in its performance.

part #: 2282473591 prices

• $274.99-$291.90

specifications pcbemdev:

• brand: Shimadzu
• mpn: 228.24735-91
• part type: Board

shipping pcbemdev:

• transit: 5-12 Days
• service: USPS Ground Advantage
• cost: $0.00
• carrier: USPS
• type: Fixed
• class: Standard

seller pcbemdev:

• city: Ringgold, Georgia
• rating: 99.8%
• # reviews: 677

payments pcbemdev:

• wallet: Apple-pay
• credit card: Visa
• other

general pcbemdev:

• condition: Used
• Electronic Components Semiconductors > Circuit Boards Prototyping > Printed Circuit Boards PCBs

offer pcbemdev:

• quantity: 1
• sold: 0
• options: Ship-to-home
• started: April 11, 2026
• best offers: True
• availability: In Stock

returns pcbemdev:

• policy: Returns Accepted
• method: Money back
• time: 30 Days
• paid by: Buyer

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