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- Model:F631D9K90HP
- SKU:F631D9K90HP
Genuine Panasonic Microwave Grill Light Bulb (Part Number: F631D9K90HP / Position No. 72)
For Premium Inverter Steam Microwave Ovens: NN-DS592M, NN-DS596, and NN-DS59N Series.
Ensure complete and bright illumination inside your microwave oven cavity using this genuine component from Panasonic. The F631D9K90HP lamp (Position No. 72 on the factory service schematic) is a high-tech spare part specifically adapted to operate under intensive combination modes, including "Steam + Grill + Convection."
Technical Specifications:
| Parameter | Value |
| Part Number | F631D9K90HP |
| Schematic Number | No. 72 (according to official technical documentation) |
| Type | Heavy-duty, heat-resistant halogen appliance bulb (custom factory spec) |
| Placement | Cooking cavity (High-heat / thermal stress zone) |
| Compatibility | Panasonic NN-DS592M, NN-DS596, NN-DS59N |
| Construction | Heat-proof glass envelope with a moisture-resistant base/socket assembly |
What Makes the Genuine F631D9K90HP Lamp Stand Out?
Resistance to "Steam Blast" Effects: during active steam cooking cycles in the NN-DS592M and similar ovens, a high concentration of hot moisture is generated. This bulb features reinforced insulation on its contact group, effectively preventing oxidation and short circuits under extreme humidity.
Operation Under Direct Thermal Radiation: positioned right in the high-heat zone of the upper grill, Lamp No. 72 is built to endure. Its specialized glass envelope will not cloud, discolor, or deform under intense infrared waves, maintaining maximum transparency throughout its entire lifespan.
Energy Efficiency & Superior Brightness: the bulb's specialized gas-fill mixture produces a brilliant luminous flux, allowing you to clearly monitor the texture and readiness of your food through heavy steam and the door's protective mesh screen.
Vibration Protection: the reinforced heavy-duty filament is engineered to resist continuous physical vibrations caused by the high-power inverter magnetron and the internal convection system.
When Is a Replacement Necessary?
Partial loss of interior lighting (e.g., when either Lamp No. 71 or Lamp No. 72 has burned out).
Unusual odors or visible sparking originating from the lamp cover/housing area.
Hairline cracks or physical fractures on the bulb's glass surface caused by mechanical damage or severe thermal stress.
Origin & Quality Assurance:
Brand: Panasonic (Japan)
Quality Grade: Genuine Service Part (Certified Original OEM)
Testing Control: every component undergoes rigorous factory inspection and testing for sustained performance in environments of up to 100% humidity.
Invest in genuine Panasonic spare parts—the ultimate guarantee for the safety, efficiency, and longevity of your premium kitchen appliance!

