e004TEC B-SA4T

Toshiba TEC B-SA4T Error E004: Battery Failure

The Toshiba TEC B-SA4T error E004 warns of a failure in the memory (SRAM) or the Real Time Clock (RTC) backup battery. When this battery drains or the backup circuit fails, the printer cannot retain customized settings after power cycles. Knowing what the E004 error means on your Toshiba is key to understanding why your printer returns to factory defaults.

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Common causes

  • 1Depletion of the internal coin-cell backup battery on the mainboard.
  • 2Long-term power storage leading to full discharge of the memory backup.
  • 3Hardware failure of the onboard memory storage chip.
  • 4Memory corruption due to unexpected electrical fluctuations.

Solutions

Diagnóstico rápido

The E004 error points to an internal data retention issue. If your printer reverts to factory settings every time it powers on, the backup battery is likely failing to hold a charge. This error is distinct from printing failures and is related to the mainboard's logic chip.

Solución paso a paso

  1. Reboot: Power off and disconnect for 10 minutes to clear residual memory errors.
  2. Configure: Access the menu and manually re-enter network parameters or label settings.
  3. Charge: Leave the unit powered on for several hours; the internal battery may need to recharge after long storage.
  4. Verify: Power cycle the printer; if settings are held, the fix is successful.

Prevención y mantenimiento

Avoid long periods (months) of storage without power. Maintain stable environmental conditions to avoid stressing the internal electronic components.

Cuándo llamar a un técnico

If the printer continues to lose settings after several power cycles, the soldered internal backup battery needs replacement. Contact a professional to avoid damaging the motherboard.

Ficha técnica del equipo

  • Technology: Industrial thermal printer
  • Memory: SRAM with backup battery
  • Connectivity: USB/Ethernet
  • Consumibles: B-SA4T Labels
  • Use Case: Warehouse / Industrial
  • Drivers / official firmware

Steps to follow

  1. 1

    Reboot

    Power off and wait for 5 minutes for a cold reboot.

  2. 2

    Configure

    Re-enter network parameters and label formats if lost.

  3. 3

    Service

    If the error persists, contact technical support for an internal battery replacement.

Frequently asked questions

The E004 error indicates a fault in the SRAM or RTC backup battery, causing loss of saved printer configurations upon shutdown.

It depends. If the printer works but loses settings, it's a minor nuisance. If it blocks functionality, it's a critical memory failure.

Consumables are not linked to this error; keep using original supplies to ensure overall hardware health.

If the battery is depleted, it requires professional replacement due to the soldering on the motherboard.