What to do if Response exceeds range in Shimadzu Security Sensors?
- KKelly CollinsSep 9, 2025
If the Shimadzu Security Sensors response exceeds the range, restart the instrument and the PC.

What to do if Response exceeds range in Shimadzu Security Sensors?
If the Shimadzu Security Sensors response exceeds the range, restart the instrument and the PC.
What to do if Shimadzu SPD-M20A detector buffer memory overflow?
If the Shimadzu Security Sensors detector buffer memory overflowed, especially if a LAN or PC breakdown occurred during measurement and an extended period of analysis, restart the instrument and the PC.
What to do if error occurred during system check of Shimadzu Security Sensors?
If the Shimadzu Security Sensors experiences an error during the system check, which may be due to lamp failure, perform the system check again. If the same error occurs again, contact a Shimadzu Representative.
What to do if a leak was detected in Shimadzu SPD-M20A?
If a leak is detected in your Shimadzu Security Sensors, it indicates that the mobile phase is leaking inside the instrument. To resolve this, eliminate the leak and carefully check all plumbing connections.
What to do if TCP/IP communication timed out in Shimadzu Security Sensors?
If you encounter a TCP/IP communication timeout with your Shimadzu Security Sensors, this is likely due to a LAN or PC breakdown. Restart the instrument and the PC to resolve this issue.
What to do if Ethernet communication timeout occurred between CBM and SPD in Shimadzu SPD-M20A Security Sensors?
If the Shimadzu Security Sensors shows that Ethernet communication timeout occurred between CBM and SPD, it is likely due to a LAN or PC breakdown. A simple solution is to restart the instrument and the PC.
What to do if Polarity exceeds range in Shimadzu SPD-M20A?
If the polarity exceeds the range in Shimadzu Security Sensors, restart the instrument and the PC.
How to fix wavelength correction not performed in Shimadzu Security Sensors?
If wavelength correction was not performed on your Shimadzu Security Sensors, you need to perform automatic wavelength correction.
How to fix EEPROM data abnormal in Shimadzu SPD-M20A Security Sensors?
If the EEPROM data is abnormal in your Shimadzu Security Sensors, it's because the EEPROM was not initialized. You can initialize the EEPROM from the PDA Utility's Service Menu, under Instrument Information, then the System menu.
What to do if cell is overheated in Shimadzu Security Sensors?
If the cell is overheated in your Shimadzu Security Sensors, it means the temperature-controlled flow cell has overheated. You should repair or replace the temperature-controlled flow cell.
| Wavelength Accuracy | ±1 nm |
|---|---|
| Wavelength Repeatability | ±0.1 nm |
| Light Source | Deuterium lamp (D2 lamp) |
| Wavelength Range | 190 to 800 nm |
| Bandwidth | 8 nm |
| Cell Temperature Control | Optional |
Details the scope and purpose of the service manual.
States limitations regarding product modifications and part availability.
Records changes and updates made to the service manual over time.
Explains the meaning and usage of Warning and CAUTION symbols.
Details on wavelength range, resolution, noise level, and drift.
Information on cell volume, path length, pressure, and materials.
Lists safety mechanisms like thermistors and leak sensors.
Covers interface, dimensions, weight, operating conditions, and power voltage.
Explanation of how the detector functions and its light path.
Detailed breakdown of the optical components and their arrangement.
Directs user to the instruction manual for external appearance details.
Procedures for removing covers, ducts, and main frame components.
Steps for adjusting the front panel hinge and alignment.
Instructions for removing leak sensors, microswitches, and thermistors.
Details on handling PDA-CPU and PDA-POWER circuit boards.
Steps for removing the optical system unit and its internal parts.
Important safety and preparation steps before maintenance.
Procedures for initial setup, connection, and basic operational checks.
Detailed steps for adjusting optical components like mirrors and slits.
How to access and use various functions within the PDA Utility.
Performing checks for initialization, safety functions, and leak sensor.
Procedures for absorbance accuracy and linearity calibration.
Measuring and verifying the refractive index effect on the baseline.
Performing tests for sample injection consistency and peak variation.
Methods for upgrading the instrument's firmware via LAN or RS-232C.
Identifying and resolving issues based on error messages and system behavior.
List of parts considered consumable during normal operation.
Comprehensive list of parts for maintenance and repair.
Listing of mechanical components used in the instrument.
Listing of electrical and electronic components.
List of optional items available for the instrument.
Detailed parts breakdown for the main SPD-M20A unit.
Parts list specifically for the optical unit assembly.
Parts list for the control unit and its internal components.
Parts list for the temperature-controlled cell assembly.
Wiring diagram showing connections between major boards and components.
Schematic detailing the power supply circuitry.
Detailed circuit schematics for the PDA power section.
Detailed circuit schematics for the PDA CPU section.
Schematic illustrating the LED indicator circuitry.
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