Product Overview
The WATERS TSL1-4 is a Com Express V2 printed circuit board used as an embedded computing/baseboard assembly in Waters instrumentation. Available product records identify it as a Com Express EPC Baseboard – Typhoon (Quad), with Revision C and board identification MA4325-202DC40PL.
The board is also associated with several additional part numbers, including 4325202DC4D, 151020008C, 510000849, MA4325-202R1D, MA4325-202P1D, MA4325-202L1D, MA4325-202R2D, MA4325-202P2D and MA4325-202L8D. These identifiers can be useful when matching a replacement against an existing instrument assembly.
This is a specialized legacy electronics assembly, so the safest replacement method is to match the complete board marking, revision, unit number and connector arrangement rather than relying on the TSL1-4 model alone.
Key Features
- Manufacturer: Waters
- Model / MPN: TSL1-4
- Product type: Com Express V2 Printed Circuit Board
- Revision: C
- Board / Assembly No.: MA4325-202DC40PL
- Unit Number: 279O03326
- Associated part number: 4325202DC4D
- Additional part number: 151020008C
- Additional part number: 510000849
- Application description: Com Express EPC Baseboard – Typhoon (Quad)
- Approximate weight: 1.020 kg
- Suitable for replacement and maintenance of compatible Waters equipment
Technical Datasheet
| Parameter | Specification |
|---|---|
| Brand | WATERS |
| Model | TSL1-4 |
| Product Type | Com Express V2 Printed Circuit Board |
| Revision | Rev C |
| Main Board No. | MA4325-202DC40PL |
| Unit Number | 279O03326 |
| Assembly Description | Com Express EPC Baseboard – Typhoon (Quad) |
| Associated P/N | 4325202DC4D |
| Associated P/N | 151020008C |
| Associated P/N | 510000849 |
| Related Board No. | MA4325-202R1D |
| Related Board No. | MA4325-202P1D |
| Related Board No. | MA4325-202L1D |
| Related Board No. | MA4325-202R2D |
| Related Board No. | MA4325-202P2D |
| Related Board No. | MA4325-202L8D |
| Approx. Weight | 1.020 kg |
| Condition in referenced listing | New / Open Box or New Other |
The 1.020 kg weight, Revision C, Unit Number 279O03326 and the primary associated part numbers are shown in current marketplace records.
Installation & Replacement Notes
This board should be replaced only after comparing the original assembly carefully.
Before installation:
- Confirm TSL1-4 on the existing board.
- Check the revision marking. This listing is identified as Rev C.
- Verify MA4325-202DC40PL or the applicable associated part number.
- Compare the connector positions and board layout.
- Record cable and connector locations before removing the original board.
- Use appropriate ESD protection when handling the PCB.
- Confirm compatibility with the specific Waters instrument configuration.
Do not assume that every board carrying a similar MA4325 number is electrically interchangeable. The related numbers shown in available records may represent associated board or assembly variants rather than direct substitutes.
Application
The available description associates this board with the Com Express EPC Baseboard – Typhoon (Quad). It is therefore best treated as a dedicated embedded computing/control board for compatible Waters instrumentation rather than as a general-purpose industrial PC motherboard.
Typical maintenance use includes:
- Waters instrument repair
- Legacy analytical equipment maintenance
- Embedded computer board replacement
- Control electronics troubleshooting
- Spare-parts inventory
- System restoration where the original board is obsolete or difficult to source
Maintenance Recommendations
Keep spare boards in ESD-safe packaging and avoid unnecessary handling of exposed circuitry.
For installed equipment:
- Check connectors for oxidation or mechanical damage.
- Inspect the PCB for burnt components or discoloration.
- Verify that cooling and airflow are unobstructed.
- Check cables before reconnecting the board.
- Record revision and serial/unit information during maintenance.
- Compare the replacement board with the removed board before powering the system.
Because detailed electrical specifications such as input voltage, processor configuration and connector pinout were not confirmed in the available public records, those values should be taken from the equipment’s service documentation rather than estimated.
FAQ
Q: What is the main model number?
A: The main model/MPN is TSL1-4.
Q: What is the board revision?
A: The referenced board is Revision C.
Q: What is MA4325-202DC40PL?
A: It is the main board/assembly identification associated with the TSL1-4 Com Express V2 PCB.
Q: What is the unit number?
A: The available listing identifies Unit Number 279O03326.
Q: What other part numbers are associated with this board?
A: Available records list 4325202DC4D, 151020008C and 510000849, along with several MA4325-202 variants.
Q: Is this a general-purpose Com Express motherboard?
A: No. Although it uses the Com Express V2 designation, the available description identifies it specifically as a Waters Com Express EPC Baseboard – Typhoon (Quad).
Q: What does TSL1-4 identify?
A: TSL1-4 is the MPN/model identification used for this Waters board.
Q: What is the approximate weight?
A: The listed weight is approximately 1.020 kg.
Q: Can I replace another MA4325 board with this one?
A: Not automatically. Match the complete part number, revision, unit number, connectors and system configuration before installation.
Related Identification Numbers
For procurement and replacement searches, the following identifiers are useful:
- WATERS TSL1-4
- MA4325-202DC40PL
- 4325202DC4D
- 151020008C
- 510000849
- MA4325-202R1D
- MA4325-202P1D
- MA4325-202L1D
- MA4325-202R2D
- MA4325-202P2D
- MA4325-202L8D
These numbers should be treated as identification/reference numbers. They should not be assumed to be interchangeable without checking the actual equipment configuration.
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WATERS TSL1-4 | Com Express V2 PCB Rev C MA4325-202DC40PL 4325202DC4D
