故障成因：電源線斷裂、開關燒毀、保險絲熔斷、內部變壓器故障、插蘇接觸不良。自用檢查：更換插座測試、檢查電源線外皮是否破損。維修更換零件：電源開關、保險管、變壓器、電源線。保養建議：避免拉扯電線，不要長時間滿負荷運轉。

Causes: Broken power cord, burnt power switch, blown fuse, faulty transformer, loose plug. Self-check: Test different wall socket, inspect cord damage. Replacement parts: power switch, fuse, transformer, power cable. Maintenance: Do not pull cord, avoid long full-load operation.

故障成因：刀盤被油垢咖啡粉完全堵塞、導粉通道積塊、豆倉下料口卡豆。自檢：清空豆倉拆開清潔刀盤與通道。維修零件：無需換件，深度清洗保養即可；長期堵塞會磨損刀盤需更換。保養：每週清理殘粉。

Causes: Burrs clogged by coffee oil, chute blockage, beans stuck at hopper outlet. Self-check: Empty hopper, disassemble & clean burrs. Parts: Usually deep clean only; heavy clog may need new burr set. Maintain: Weekly residue cleaning.

成因：刀盤變形、刀齒磨損、調節間隙偏移、刀盤固定螺絲鬆動。自檢：觀察刀盤齒是否缺損，重新鎖緊固定螺絲。維修：更換一組新刀盤、重新校正研磨刻度。保養：禁止研磨堅硬異物、石頭、金屬。

Causes: Deformed burrs, worn teeth, misaligned adjustment gap, loose burr screws. Self-check: Check broken teeth, retighten screws. Repair: Replace burr set, recalibrate grind scale. Maintain: Never grind stones/metal foreign objects.

成因：刀盤互相摩擦、內部進金屬雜質、馬達軸承磨損、固定支架鬆脫。自檢：清空豆倉手轉刀盤觀察卡異物。維修：更換軸承、刀盤、避震膠墊。保養：每次倒豆前檢查咖啡豆是否摻雜石頭。

Causes: Burr collision, metal debris inside, worn motor bearing, loose bracket. Self-check: Rotate burr manually after empty hopper. Repair: New bearing, burrs, anti-vibration pad. Maintain: Screen beans for stones before use.

成因：馬達過熱保護、內部短路、負荷過大堵塞、溫度感應器故障。自檢：停機半小時冷卻再試，清理堵塞粉塊。維修：更換溫控感應器、維修馬達繞組。保養：商用機避免連續半小時不停研磨。

Causes: Motor overheat protection, internal short circuit, heavy clog overload, faulty temperature sensor. Self-check: Cool down 30 mins, clear clog. Repair: Replace thermal sensor, rewind motor. Maintain: No non-stop grinding over 30 mins for commercial unit.

成因：調節齒輪斷齒、調節螺紋卡死、刻度軸脫位。自檢：觀察旋鈕連動結構是否跟隨轉動。維修：更換調節齒輪組、潤滑螺紋軸。保養：定期清潔調節機構殘粉油垢。

Causes: Broken adjustment gear, seized thread, detached shaft. Self-check: Observe linkage movement when turning knob. Repair: New gear set, thread lubrication. Maintain: Clean grind adjustment mechanism regularly.

成因：出粉膠圈老化變形、導粉管裂開、防飛粉墊脫落。自檢：查看膠墊是否硬化開裂。維修：更換防漏矽膠墊、導粉軟管。保養：每次清潔時檢查膠圈彈性。

Causes: Aged chute silicone ring, cracked powder tube, missing anti-splash pad. Self-check: Check hard/cracked seal. Repair: New silicone seal, powder tube. Maintain: Inspect seal elasticity during cleaning.

成因：刀盤嚴重磨損掉屑、內部金屬配件生鏽、雜金屬卡入研磨區。自檢：觀察刀盤齒邊是否磨平生鏽。維修：全套更換高硬度刀盤、除鏽內部金屬件。保養：每月深度除油清潔刀盤。

Causes: Heavily worn burrs shedding metal, rusted internal parts, metal debris in grinding chamber. Self-check: Check flat/rusted burr edges. Repair: Full new burr set, rust removal. Maintain: Deep degrease burr monthly.

成因：安全感應彈片彈性疲乏、感應光遮斷器積粉、蓋子凸點磨損。自檢：按壓感應彈片測試彈性，清潔感應窗口。維修：更換感應開關、彈片。保養：避免大力撞擊豆倉蓋。

Causes: Worn safety spring, dust covered optical sensor, worn lid bump. Self-check: Press spring, wipe sensor window. Repair: New safety sensor spring. Maintain: Avoid heavy impact on hopper lid.

成因：計時電路板故障、電磁閥卡粉、轉盤計量齒輪積垢、電源電壓波動。自檢：重新校準定量時間，清理計量轉盤。維修：維修主控板、更換計量閥。保養：每兩週清潔定量計量機構。

Causes: Fault timer PCB, clogged dosing solenoid, dirty metering gear, unstable voltage. Self-check: Recalibrate dose timer, clean metering wheel. Repair: Fix main PCB, replace dosing valve. Maintain: Clean dosing mechanism biweekly.

成因：內部電線皮老化破損、接地線脫落、主板受潮短路。自檢：立即停止使用，切斷電源，切勿繼續操作。維修：重新包裹線路絕緣、修復接地、除濕主板。保養：避免機器淋水、放置潮濕位置。

Causes: Cracked wire insulation, disconnected ground wire, damp shorted PCB. Self-check: Stop using immediately, cut power supply. Repair: Rewire insulation, fix ground, dehumidify circuit board. Maintain: Keep unit away from water/humidity.

成因：咖啡豆油脂黏附倉壁、下料口尺寸窄、轉動撥豆片斷裂。自檢：擦拭豆倉油垢，手動輔助撥豆測試。維修：更換撥豆攪拌片、打磨下料口。保養：高油深烘豆縮短清潔週期。

Causes: Coffee oil stuck on hopper wall, narrow feed opening, broken bean agitator. Self-check: Wipe oily hopper wall, test manual stirring. Repair: New agitator fin, polish feed chute. Maintain: More frequent cleaning for dark oily roast beans.

成因：馬達碳刷磨損、電壓不足、軸承生鏽阻力大、內部繞組老化。自檢：觀察碳刷長度，檢查插座電壓。維修：更換碳刷、軸承、維修馬達。保養：商用機每年檢查一次碳刷狀態。

Causes: Worn motor carbon brush, low supply voltage, rusted bearing resistance, aged winding. Self-check: Inspect brush length, test socket voltage. Repair: New carbon brush, bearing, motor rewinding. Maintain: Annual carbon brush inspection for commercial grinders.

成因：控制面板供電線脫落、LCD驅動板燒毀、按鍵薄膜受潮氧化。自檢：重插內部排線，擦乾面板水氣。維修：更換觸控面板、驅動主板。保養：禁止濕抹布直接擦拭屏幕。

Causes: Loose panel cable, burnt LCD driver board, damp oxidized membrane button. Self-check: Reconnect ribbon cable, dry panel moisture. Repair: New touch control PCB, display board. Maintain: Do not wipe screen with wet cloth directly.

成因：底部避震膠腳老化硬化、刀盤不平衡、內部配重脫落。自檢：檢查四個膠腳是否磨平。維修：全套更換避震腳、校正刀盤平衡。保養：放置平整堅固台面使用。

Causes: Hardened anti-vibration rubber feet, unbalanced burr set, loose internal weight. Self-check: Inspect worn rubber pads. Repair: Full new rubber feet, rebalance burrs. Maintain: Operate on flat solid countertop.

成因：導粉管彎曲積粉、刀盤腔室死角多、防殘粉刮片缺失。自檢：拆卸導粉管沖洗殘粉。維修：更換防殘粉刮片、修整導粉管路。保養：每次研磨完輕敲機身抖落殘粉。

Causes: Curved chute trapping powder, dead space inside burr chamber, missing wiper blade. Self-check: Disassemble & rinse chute residue. Repair: New wiper blade, reshape powder tube. Maintain: Tap grinder lightly post-grind to drop leftover grounds.

成因：馬達線圈過載燒蝕、殘粉積碳烘烤、電路板短路發熱。自檢：立即斷電，勿持續使用避免起火。維修：維修馬達繞組、清理內部積碳、更換故障電路板。保養：定期清理機身內部殘粉。

Causes: Overloaded burnt motor coil, carbonized leftover grounds, shorted PCB heat up. Self-check: Cut power immediately to avoid fire hazard. Repair: Rewind motor, clean carbon residue, replace faulty circuit board. Maintain: Regular internal residue clearance.

成因：傳動齒輪磨損滑牙、刀盤卡油垢、中心軸螺絲鬆脫。自檢：拆開清理刀盤，鎖緊中心螺絲。維修：更換傳動齒輪、潤滑軸心。保養：手磨每次使用後簡單刷除殘粉。

Causes: Worn slipping drive gear, oily clogged burrs, loose central shaft screw. Self-check: Disassemble clean burrs, retighten shaft screw. Repair: New drive gear, shaft lubrication. Maintain: Brush residue after every use for manual grinders.

成因：刀盤嚴重磨損間隙變大、調節底座移位、限位卡扣斷裂。自檢：查看刀盤齒是否磨平無鋒利邊緣。維修：更換全新刀盤、重新校正調節底座。保養：禁止長期超粗刻度研磨加劇磨損。

Causes: Widened gap from worn burrs, shifted adjustment base, broken limit clip. Self-check: Inspect dull flat burr teeth. Repair: Brand new burr set, recalibrate adjustment base. Maintain: Avoid long-term extra-coarse grind to reduce wear.

成因：潮濕環境金屬刀盤、軸承生鏽卡死，殘粉吸濕凝固。自檢：勿強行開機燒毀馬達，需拆開除鏽。維修：金屬部件除鏽潤滑、嚴重生鏽直接更換刀盤軸承。保養：長期停用前徹底清潔乾燥存放防潮。

Causes: Rusted burrs & bearing from humid storage, damp solidified coffee residue. Self-check: Do not force power on to burn motor, disassemble rust removal required. Repair: Rust treatment & lubrication, full burr/bearing replacement for heavy rust. Maintain: Deep clean & fully dry before long storage.