SRAM Quarq DZero Basic Troubleshooting page 10

Install a new CR2032 coin cell battery into the battery compartment,
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positive side facing outward.
Keep the battery out of reach of children. Do not put the battery in
your mouth. If ingested, seek medical attention immediately. Do not
disassemble, damage, or puncture the battery. Consult the battery
manufacturer for safe handling instructions.
Install the battery compartment lid until it is handtight. Watch for the
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LED to blink on; green for DZero™ power meters, and red for Legacy
power meters.
If the LED blinks on, connect the power meter to the appropriate Qalvin™ version and update the power meter firmware, if needed.
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DZero™ Power Meter: Compatible with
Legacy Power Meter: Compatible with
If the LED does not blink on and the power meter will not pair to a head unit or Qalvin:
DZero™ Power Meter: Contact
Legacy Power Meter: Perform the
This completes the troubleshooting for the Power Meter Reboot service.
⚠ WA RNI NG
Qalvin BLE only.
Qalvin Legacy only.
Quarq® customer support or your Quarq® dealer.
Spider Inspection steps in the following section.
CR2032
Green LED DZero
Red LED Legacy
Power Meter Reboot 10