Service flow & 7-year parts

SERVICE-FLOW.md

Inbound Diagnostic

Equipment Needed:

• WanderBulb Diagnostics Kit (WB-DK)
• Model: WB-DK01
• Components:
• Diagnostic Tool (DT-WBD)
• Firmware Version: v2.3
• Serial Number: S/N-7856
• Voltage Meter (VM-WB)
• Range: DC 0V to 10V, ±0.01V accuracy
• Serial Number: VM-SN09

Testing Procedures:

1. Power-On Self Test (POST) — Ensure bulb operates at default settings.

• Test Case:
• Input Voltage: 240V AC
• Expected Output: Bulb should light up with white color, brightness l

level at 50%

• Tolerance: ±5% on voltage input and ±10% on brightness output

2. Functional Testing — Verify all features are operational.

• Test Case:
• Input Signal: Command sent via HomeKit App
• Expected Output: Bulb should change to preset color (e.g., blue)
• Tolerance: Color accuracy must match reference RGBW values within ±1

±15%

3. Environmental Stress Testing — Simulate extreme conditions.

• Test Case:
• Temperature Range: 0°C to 40°C
• Humidity Range: 20% to 90%
• Expected Output: Bulb should continue operation without failure or d

degradation of performance

Field-Replaceable Units (FRUs)

List of FRUs:

1. LED Module — LMT-WB01

• Part Number: WB-LM01A
• Vendor: Luxeon (LSN)

2. Microcontroller Unit (MCU) — MCU-NRF52840

• Part Number: 3320-0100
• Vendor: Nordic Semiconductor

3. Power Supply Module (PSM) — PSM-WB01

• Part Number: WB-PSM01A
• Vendor: Mean Well (MWD)

4. Mesh Radio Unit (MRU) — MRU-MDBT50Q

• Part Number: MDBT50Q-1MV2
• Vendor: Raytac

Testing Procedures:

• LED Module:
• Replace with new LMT-WB01 and verify light output matches original.
• Tolerance: ±3% on luminous flux, ±5% on color temperature
• MCU:
• Replace MCU-NRF52840 with spare unit (must be from approved batch).
• Test POST for correct firmware version and functionality.
• Power Supply Module:
• Disconnect existing PSM-WB01 and reconnect new module; test voltage sta

stability.

• Tolerance: ±2% on DC output, ±5% under load conditions
• Mesh Radio Unit:
• Replace MRU-MDBT50Q with new unit from spare inventory.
• Verify signal strength and connection quality using DT-WBD.

Battery Service

Service Description:

WanderBulb does not utilize internal batteries; however, certain mesh commu communication modules may use small coin cells for backup power during firm firmware updates or radio maintenance. Replacement of these batteries is re required every 12 months under heavy usage conditions to ensure optimal per performance.

Procedure Steps:

1. Disassemble Bulb:

• Remove the base ring and disconnect all connectors.
• Serial Number: Engraved inside ring (visible only when bulb is removed

removed).

2. Battery Removal:

• Use provided screwdriver set WB-DR02 to carefully extract coin cell CR

CR2430 from MRU-MDBT50Q module.

3. Replacement:

• Insert new battery, ensuring correct polarity.
• Tolerance: ±1mm on insertion depth

4. Reassembly & Testing:

• Reconnect all internal connectors and reattach base ring.
• Power-on test to verify radio functionality; expect nominal signal str

strength.

Firmware Roll-Back

Procedure Steps:

1. Backup Existing Firmware:

• Utilize DT-WBD to capture current firmware image (version v2.0).
• Store backup on secure network drive with timestamp and serial number

labeling.

2. Prepare Rollback Image:

• Download previous version of firmware from internal server.
• Ensure compatibility by verifying checksums match known good values.

3. Update Procedure:

• Flash rollback image onto MCU using DT-WBD tool in recovery mode.
• Tolerance: ±5 seconds on update duration

4. Verification & Testing:

• Post-update test all functional aspects of bulb to confirm no loss in

features or performance.

• Record results in service log.

Decommission + Secure Wipe

Procedure Steps:

1. Isolate Bulb from Network:

• Remove WanderBulb from any connected mesh networks (e.g., HomeKit, Mat

Matter).

• Verify disconnection through DT-WBD tool.

2. Wipe Data:

• Initiate secure data wipe sequence via DT-WBD.
• Confirm success by attempting to re-establish network connection; oper

operation should now fail due to erased credentials.

3. Physical Disassembly:

• Remove internal components for disposal or recycling, starting with LE

LED module and moving outward.

• Document serial numbers of major parts before removal.

4. Degaussing:

• Perform degaussing on PCB using industrial degausser WDG-01 to elimina

eliminate residual magnetic fields that could interfere with subsequent man manufacturing processes or storage procedures.

• Tolerance: ±2 Gauss reading post-degaussing

5. Documentation & Reporting:

• Complete decommission form (WB-DL03) detailing all actions taken and s

serial numbers involved.

• Submit report to compliance officer for auditing.

Ambassador Signature Provenance

Verification Steps:

1. Ambassador Identification:

• Ensure the bulb has been manufactured by an authorized ambassador asse

assembly line.

• Look inside base ring for engraved signature (visible only when remove

removed).

2. Signature Integrity Check:

• Compare the actual engraving against a digital copy of the ambassador'

ambassador's verified signature stored in the internal database WB-DB01.

• Use optical character recognition software OCSR-02 to match signatures

signatures.

3. Ambassador Background Verification:

• Query background check records of each ambassador from centralized HR

management system WHRM-05.

• Ensure no red flags or discrepancies exist regarding the identity and

integrity of the assembler.

Cost + 10% Parts Table

| Part Number | Description | Unit Cost (USD) | Quantity Per Per Bulb | Total Cost (USD) | Additional 10% Cost |

| WB-LM01A | LED Module | 5.98 | 1

5.98	0.60

| 3320-0100 | MCU - Nordic nRF52840 | 2.76 | 1

2.76	0.28

| WB-PSM01A | Power Supply Module | 3.12 | 1

3.12	0.34

| MDBT50Q-1MV2| Mesh Radio Unit | 4.69 | 1

4.69	0.52

| WB-DK01 | Diagnostic Kit | 18.75 | 0 (as needed needed) | N/A | N/A | | VM-SN09 | Voltage Meter | 3.00 | 0 (as needed needed) | N/A | N/A |

Notes:

• Parts are sourced from tier-one vendors as per SOURCING.csv.
• Additional cost accounts for potential spares and warranty replacements o

over product lifecycle.

• Total Cost +10% = $16.59

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Appendices

A1 - Diagnostic Tool Software Requirements

• DT-WBD Firmware v2.3 or later required for all diagnostic procedures.

A2 - Environmental Specifications

Refer to WANDERBULB-FAMILY-SPEC.md for full environmental specifications, i including temperature and humidity ranges.

Open STL files

WanderBulb — Open Mechanical Files

Per the WanderVerse 7-year repair commitment, every mechanical file required to fabricate replacement parts is published here under CC-BY-SA 4.0.

Files

• enclosure-front.stl, enclosure-back.stl — outer case
• pcb-mount-bracket.stl, battery-tray.stl — internal mounts
• pcb-3d-step.step — full mechanical PCB outline
• drawings.pdf — assembly drawings + tolerance sheet

Engraved signature stays inside; do not place wordmarks on the exterior.