成因：電源線斷裂、開關燒毀、保險絲熔斷、馬達燒壞、內部接線脫落。保養建議：避免長時間連續運轉，定期檢查電源插頭。維修方案：更換電源線、開關、保險絲或重繞馬達。

Cause: Broken power cord, burnt switch, blown fuse, burnt motor, loose internal wiring. Maintenance: Avoid long continuous operation, check plug regularly. Repair: Replace cord, switch, fuse or rewind motor.

成因：傳動齒輪磨損、傳動皮帶斷裂、連接軸滑牙。保養：定期清潔磨盤殘粉，不要投放硬物。維修：更換齒輪/皮帶/傳動軸。

Cause: Worn drive gear, broken belt, stripped drive shaft. Maintenance: Clean residual powder regularly, never grind hard objects. Repair: Replace gear/belt/shaft.

成因：磨盤鬆動、軸承磨損、金屬異物卡入磨盤、避震墊老化。保養：每兩個月清潔磨盤，檢查螺絲。維修：更換軸承、避震墊、重新固定磨盤。

Cause: Loose burrs, worn bearing, metal foreign object stuck, aged shock pad. Maintenance: Clean burrs bi-monthly, check screws. Repair: Replace bearings & shock pads, re-tighten burrs.

成因：出粉口積油結塊、靜電嚴重、磨盤間距調整過細、潮濕咖啡豆。保養：每周清潔出粉通道，存放咖啡豆保持乾燥。維修：拆解除油垢、更換防靜電配件。

Cause: Oily residue blockage, static buildup, too fine grind setting, damp beans. Maintenance: Clean chute weekly, store beans dry. Repair: Disassemble & remove oil, replace anti-static parts.

成因：調節齒條卡粉生鏽、定位彈簧斷裂、旋鈕滑牙。保養：定期清潔調節結構，少量潤滑食品級潤滑油。維修：除鏽、更換彈簧與調節齒輪。

Cause: Clogged & rusted adjustment rack, broken spring, stripped knob teeth. Maintenance: Clean adjuster regularly, use food-safe lubricant. Repair: De-rust, replace springs & gears.

成因：密封膠圈老化、機殼卡扣斷裂、磨盤罩變形。保養：避免大力拆解機殼，定期更換膠圈。維修：替換密封墊、修復機殼卡扣。

Cause: Aged sealing ring, broken shell clip, deformed burr cover. Maintenance: Avoid forceful disassembly, replace gaskets periodically. Repair: New gaskets & shell clip repair.

成因：磨盤刀齒磨鈍、磨盤偏移、調節間距左右不一致。保養：每6-12個月檢查磨盤鋒利度。維修：打磨或直接更換全新磨盤。

Cause: Dull burr teeth, offset burr alignment, uneven gap. Maintenance: Inspect burr sharpness every 6-12 months. Repair: Resurface or replace burr set.

成因：計時板故障、定量馬達失靈、出粉閥門卡粉、感應器髒污。保養：每日清潔定量閥門。維修：維修控制電路板、更換計量馬達。

Cause: Faulty timer board, dose motor failure, clogged dosing gate, dirty sensor. Maintenance: Clean dosing gate daily. Repair: Fix PCB or replace dosing motor.

成因：馬達線圈老化、散熱孔堵塞、連續研磨負荷過大、溫度保護器故障。保養：保持散熱孔通風，分次研磨。維修：清理散熱、更換溫控保護器、維修馬達。

Cause: Aged motor coil, blocked vents, overloading, faulty thermal protector. Maintenance: Keep vents clear, grind in batches. Repair: Clear vents, replace thermal cut-off, repair motor.

成因：安全開關彈片變形、感應磁鐵脫落、接線斷開。保養：不要大力撞擊豆倉蓋。維修：校正彈片、重新固定磁鐵、修復線路。

Cause: Deformed safety switch spring, detached magnet, broken wiring. Maintenance: Avoid heavy impact on hopper lid. Repair: Re-align spring, reattach magnet, fix wiring.

成因：軸心生鏽、磨盤殘粉卡緊、螺絲過緊。保養：定期拆解清潔，軸心塗食品級潤滑油。維修：除鏽、調整螺絲鬆緊度。

Cause: Rusted axle, powder clog, overtightened screws. Maintenance: Disassemble & clean regularly, lubricate axle with food-safe oil. Repair: De-rust, adjust screw tension.

成因：環境乾燥、出粉通道無導電防靜電設計、咖啡豆烘培度深油脂多。保養：室內加濕，每次研磨前輕噴少量清水於豆表。維修：加裝防靜電金屬配件。

Cause: Dry environment, no anti-static chute, dark oily roasted beans. Maintenance: Humidify room, mist beans lightly before grinding. Repair: Install anti-static metal parts.

成因：面板受潮、電路板氧化、觸控晶片故障。保養：避免水蒸氣噴濺機身，擦拭面板用乾布。維修：烘乾除濕、更換觸控板/主控板。

Cause: Moisture damage, oxidized PCB, faulty touch IC. Maintenance: Keep away from steam, wipe panel with dry cloth. Repair: Dehumidify circuit, replace touch/main board.

成因：豆倉閥門彈簧疲勞、閥門墊片磨損、豆倉變形。保養：不要重壓豆倉閥門。維修：更換彈簧與密封墊片。

Cause: Fatigued hopper gate spring, worn gasket, deformed hopper. Maintenance: Do not press gate hard. Repair: New spring & sealing gasket.

成因：磨盤崩齒、金屬異物磨損刀盤、軸承磨損脫屑。保養：每次加豆前檢查豆倉無金屬雜物。維修：全套更換磨盤與軸承。

Cause: Chipped burr teeth, metal foreign objects scratch burrs, worn bearing shedding metal. Maintenance: Check hopper for metal debris before adding beans. Repair: Full burr & bearing replacement.

成因：散熱不良、馬達保護啟動、出粉通道大面積堵粉。保養：營業時分段研磨，每3小時清潔一次出粉口。維修：疏通通道、升級散熱結構。

Cause: Poor heat dissipation, motor thermal protection, heavily clogged chute. Maintenance: Grind in batches during business hours, clean chute every 3 hours. Repair: Unclog chute, upgrade cooling structure.

成因：底部避震腳墊硬化脫落、馬達偏心、磨盤不平衡。保養：定期檢查底部防滑墊。維修：更換全套避震墊、校正馬達平衡。

Cause: Hardened detached anti-slip pads, unbalanced motor, uneven burr set. Maintenance: Inspect bottom rubber pads regularly. Repair: New full shock pad set, motor balance calibration.

成因：香港潮濕氣候金屬零件氧化生鏽、殘粉吸濕結塊卡緊機構。保養：長期不用需清空豆倉、徹底清潔後放置乾燥櫃。維修：全機拆解除鏽、潤滑傳動零件。

Cause: Humid HK climate causes metal rust, damp residual powder jams gears. Maintenance: Empty hopper & deep clean before long storage, store in dry cabinet. Repair: Full disassembly de-rust & lubricate transmission parts.

成因：線路受潮破皮、馬