故障原因：電源線斷裂、開關燒毀、保險絲熔斷、馬達線路脫落、變壓器損壞。
維修方案：更換電源線/開關/保險絲，重接內部線路，維修或替換變壓器。
Fault Reason: Broken power cord, burnt switch, blown fuse, loose motor wire, damaged transformer. Repair: Replace cord/switch/fuse, rewire internal circuit, repair transformer.

故障原因：刀盤卡滿殘粉堵塞、傳動齒輪磨損斷裂、進料口卡豆、調研磨度過緊卡死。
維修方案：徹底清潔刀盤粉槽、更換磨損齒輪、疏通進料口、重置研磨刻度。
Fault Reason: Burr clogged with old coffee powder, worn drive gear, bean jam, over-tight grind setting. Repair: Deep clean burr chamber, replace gear, unclog hopper, reset grind dial.

故障原因：出粉通道積油結塊、刀盤間隙偏移、攪拌撥片老化、豆倉進氣不足。
保養維修：拆解清洗整個出粉管道、校正刀盤平行度、更換撥粉片、疏通豆倉透氣孔。
Fault Reason: Oil blockage on chute, misaligned burrs, worn agitator, blocked hopper vent. Repair: Full chute deep clean, calibrate burr gap, replace agitator, clear vent hole.

故障原因：刀盤金屬相撞、軸承磨損缺油、馬達軸鬆動、異物掉入刀盤。
維修方案：取出異物、校正刀盤間距、替換軸承、馬達軸加固潤滑。
Fault Reason: Metal burr collision, dry worn bearing, loose motor shaft, foreign object inside burr. Repair: Remove debris, calibrate gap, replace bearing, lubricate motor shaft.

故障原因：調節齒盤滑牙、固定螺絲鬆脫、刻度環斷裂、調節軸卡死積粉。
維修方案：鎖緊固定螺絲、替換損壞調節齒、拆解清潔調節結構。
Fault Reason: Stripped adjustment gear, loose lock screw, cracked dial ring, clogged adjust shaft. Repair: Tighten screw, replace adjust gear, full disassembly clean.

故障原因：馬達過熱保護、風扇散熱堵塞、電容衰減、內部短路漏電。
維修方案：清潔散熱風道、更換啟動電容、檢查線路絕緣、散熱風扇維修。
Fault Reason: Motor overheat protection, blocked cooling fan, degraded capacitor, internal short circuit. Repair: Clean vent, replace capacitor, re-inspect wiring, fix cooling fan.

故障原因：靜電過大、出粉膠圈老化變形、撥粉片損壞、粉倉密封失效。
保養維修：更換密封膠圈、安裝靜電消除配件、替換撥粉片。
Fault Reason: Static buildup, deformed chute rubber seal, broken agitator, bad powder chamber seal. Repair: Replace rubber gasket, install anti-static part, change agitator.

故障原因：刀盤嚴重磨損、刀盤固定螺絲鬆動脫落、軸承金屬碎屑掉落。
維修方案：全套更換進口刀盤、鎖緊刀盤固定件、替換磨損軸承。
Fault Reason: Heavily worn burr, loose burr screw, bearing metal debris falling into powder. Repair: Full burr replacement, fasten burr lock, swap bearing.

故障原因：豆倉卡扣斷裂、彈簧鬆脫、底座卡槽磨損。
維修方案：替換卡扣彈簧、維修底座卡槽、更換全新豆倉。
Fault Reason: Cracked hopper clip, loose spring, worn base lock slot. Repair: Replace clip spring, repair slot, new hopper swap.

故障原因：計時板故障、電磁閥卡滯、定量撥輪磨損、感應器髒污。
維修方案：校正定量電路板、清洗/更換電磁閥、清潔光感應器。
Fault Reason: Faulty timer board, stuck solenoid valve, worn dosing wheel, dirty optical sensor. Repair: Calibrate PCB, clean/replace solenoid, wipe sensor lens.

故障原因：線路絕緣皮破損、接地線脫落、馬達繞組老化漏電。
維修方案：重新包覆線路絕緣、修復接地、維修馬達繞組或更換馬達。
Fault Reason: Damaged wire insulation, detached ground wire, aging motor winding leakage. Repair: Rewire insulation, restore ground, repair motor winding.

故障原因：馬達過載燒線、電容鼓包燃燒、線路互相高溫熔化。
維修方案：斷電全面檢查線路，更換燒毀電容與電機，重佈內部線路。
Fault Reason: Overloaded burnt motor wire, swollen burnt capacitor, melted internal wiring. Repair: Full wiring inspection, replace capacitor & motor, rewire machine.

故障原因：內置隔音棉脫落、軸承缺油、刀盤間距偏移產生金屬碰撞、防震墊老化。
維修保養：補裝隔音棉、替換軸承、校正刀盤、更換底部防震膠墊。
Fault Reason: Fallen sound insulation cotton, dry bearing, misaligned burr, aged anti-vibration pad. Repair: Reinstall soundproof cotton, swap bearing, calibrate burr, new anti-vibration mat.

故障原因：觸控PCB受潮氧化、排線鬆脫、顯示屏燒毀、按鍵彈片老化。
維修方案：乾燥除鏽線路板、重插排線、維修觸控板或替換面板總成。
Fault Reason: Moist oxidized touch PCB, loose ribbon cable, burnt LCD screen, worn key spring. Repair: Dry & clean circuit board, reinsert cable, replace touch panel assembly.

故障原因：咖啡油脂結垢固化卡死刀盤、軸承生鏽、金屬氧化黏連。
保養維修：拆解浸泡專用清潔劑、去除油垢鏽跡、潤滑軸承，嚴重則換刀盤軸承。
Fault Reason: Solidified coffee oil jam burr, rusted bearing, metal oxidation stick. Repair: Disassemble soak with grinder cleaner, remove rust, lubricate bearing, replace burr if damaged.

故障原因：傳動皮帶斷裂、聯軸器滑牙、驅動齒輪磨平打滑。
維修方案：更換皮帶/聯軸器/傳動齒輪三件組。
Fault Reason: Broken drive belt, stripped coupler, worn flat drive gear slipping. Repair: Full replacement of belt + coupler + drive gear set.

故障原因：密封墊老化滲油、刀盤底座積油溢流、機體內部油路無定期清潔。
保養方案：整機深度除油清潔，替換所有密封橡膠墊，定期3個月保養一次。
Fault Reason: Aged oil seal gasket, overflow oil on burr base, lack of regular deep clean. Maintenance: Full degrease cleaning, replace all rubber gaskets, quarterly maintenance recommended.

故障原因：內部齒輪滑牙、中軸生鏽、刀盤卡死、搖柄固定螺絲脫落。
維修保養：拆解除鏽潤滑，替換損壞齒輪與中軸配件。
Fault Reason: Stripped internal gear, rusted spindle, jammed burr, loose crank screw. Repair: Disassemble de-rust lubricate, swap damaged gear & spindle parts.

家用機：每1個月簡單清潔，3個月深度拆解保養；商用機（咖啡店）每7日清潔，每月深度保養。
保養步驟：清空殘豆→拆豆倉、刀盤、出粉槽→專用刷清粉→食品級清潔劑除油→徹底晾乾再組裝。
Home grinder: Monthly light clean, quarterly deep service. Commercial shop grinder: Weekly clean, monthly full maintenance. Steps: Empty beans → disassemble hopper/burr/chute → brush residual powder → food-safe degrease → fully dry before reassemble.

1. 確認插座供電正常、插頭無鬆脫；2. 清空豆倉檢查是否卡異物；3. 清理出粉口殘粉；4. 檢查研磨刻度是否調至過緊；5. 觀察機身是否有漏油、燒焦痕跡；6. 檢查電源線是否破皮。
若以上檢查後故障依舊，建議送至觀塘門店專業拆解維修，避免自行拆機損壞精密零件。
Self-check list: Power socket, bean jam, clogged chute, over-tight grind dial, oil leakage, damaged cord. If fault persists, bring to Kwun Tong workshop for professional disassembly to avoid damaging precision parts.