成因：電源線斷裂、保險絲燒毀、內置電路板燒壞、開關接點氧化、插座供電異常。維修：更換電源線/保險絲、維修或替換主控板、清潔電源開關。保養：避免拉扯電源線，定期檢查插座電壓。

Cause: Broken power cord, blown fuse, burnt PCB, oxidized power switch, faulty socket. Repair: Replace cord/fuse/PCB, clean switch. Maintenance: Do not pull power cable roughly, check socket voltage regularly.

成因：馬達碳刷磨損、馬達線圈燒毀、齒輪卡死、安全開關脫落。維修：更換碳刷、維修馬達繞組、清理卡粉雜物、重裝安全感應開關。

Cause: Worn carbon brush, burnt motor coil, jammed gear, detached safety switch. Repair: Replace brush, rewind motor, clear coffee powder jam, reinstall safety switch.

成因：出粉通道積油結塊堵塞、刀盤間距調太細、導粉管生鏽黏粉、彈簧閥卡滯。維修：全機深度除油清潔、校正研磨刻度、拋光或替換導粉管路、維修單向彈簧閥。

Cause: Oil caked powder blockage, too fine grind setting, rusted chute, stuck spring valve. Repair: Deep degrease cleaning, calibrate grind dial, polish chute, fix one-way spring valve.

成因：刀盤鈍化崩齒、刀盤固定螺絲鬆動、上下刀盤偏移、刻度齒輪磨損。維修：打磨刀盤或更換全新刀盤、鎖緊固定螺絲、校正刀盤同心度、替換調節齒輪組。

Cause: Dull/broken burr teeth, loose burr screw, offset burr alignment, worn adjustment gear. Repair: Resurface or replace burrs, tighten screws, calibrate concentricity, swap gear set.

成因：金屬異物掉入刀盤、軸承磨損缺油、刀盤互相摩擦、機身避震墊老化。維修：取出金屬雜物、替換軸承加注食品級潤滑油、校正刀盤間距、更換避震膠墊。

Cause: Metal debris between burrs, worn dry bearing, burr collision, aged shock pad. Repair: Remove foreign objects, replace bearing with food-grade lube, adjust burr gap, swap shock rubber.

成因：馬達固定支架鬆動、刀盤失衡、底部防滑墊脫落、桌面不平。維修：鎖緊馬達固定螺絲、校正刀盤平衡、替換防滑避震墊。

Cause: Loose motor bracket, unbalanced burr, missing anti-slip pad, uneven countertop. Repair: Tighten motor mount, balance burr, replace anti-slip rubber.

成因：導粉口密封膠圈老化、靜電過大、出粉嘴變形、研磨速度過快。維修：更換密封膠圈、安裝靜電消除配件、校正出粉嘴形狀、調整馬達轉速。

Cause: Aged chute seal ring, heavy static electricity, deformed spout, high motor RPM. Repair: Swap seal ring, install anti-static tool, reshape spout, adjust motor speed.

成因：刀盤生鏽、軸承磨損脫金屬、機械螺絲脫落。維修：拋光除鏽或更換刀盤、替換軸承、檢查鎖緊全部內部螺絲。

Cause: Rusted burr, worn bearing shedding metal, loose internal screw. Repair: Polish rust or replace burr, swap bearing, retighten all inner screws.

成因：計時電路板故障、定量感應器髒污、出粉閥卡滯、轉速不穩。維修：重刷程式或替換計時板、清潔感應光電開關、保養定量彈簧閥。

Cause: Faulty timer PCB, dirty dose sensor, stuck dosing valve, unstable RPM. Repair: Reprogram or replace timer board, clean photo sensor, maintain dosing spring valve.

成因：豆倉膠墊老化裂開、豆倉鎖扣斷裂、進豆閥門變形。維修：替換密封膠圈、更換鎖扣零件、校正進豆閥門。

Cause: Cracked hopper rubber seal, broken lock clip, deformed bean inlet valve. Repair: Replace seal ring & clip, reshape inlet valve.

成因：調節齒輪磨平、刻度螺絲脫落、內部調節螺紋滑牙。維修：更換全套調節齒輪組、重裝鎖緊固定螺絲、修復或替換調節座。

Cause: Worn adjustment gear, loose dial screw, stripped inner thread. Repair: Full gear set replacement, retighten screw, repair adjuster base.

成因：馬達負載過大、散熱孔堵塞、溫度保護感應器故障、連續長時間研磨。維修：清理內部積粉疏通散熱、替換溫控開關、分時段間隔研磨使用。

Cause: Overloaded motor, blocked ventilation, faulty thermal sensor, non-stop grinding. Repair: Clear powder vents, replace thermal cut-off switch, grind intermittently.

成因：刀盤底座密封墊老化、軸承滲油、長期不清潔積油滲漏。維修：全機拆解除油、替換底座密封膠、更換防滲油軸承。保養：每2-4週深度清潔一次刀盤與機芯。

Cause: Aged burr base seal, leaking bearing oil, long-term oil buildup. Repair: Full disassembly degrease, swap base seal, oil-proof bearing replacement. Maintenance: Deep clean burr core every 2-4 weeks.

成因：進豆攪拌葉片斷裂、豆倉出口積油結塊、濕潤咖啡豆結團。維修：替換攪拌葉、高溫除油清潔進豆通道、使用乾燥咖啡豆。

Cause: Broken feed auger blade, oil blockage at bean inlet, clumpy moist beans. Repair: Replace auger, high-temp degrease inlet, use dry coffee beans.

成因：內部齒輪斷齒、刀盤卡粉固化、連接軸滑牙。維修：拆解深度清潔、替換金屬齒輪、修復傳動軸。

Cause: Broken inner gear, caked powder jam, stripped drive shaft. Repair: Disassemble deep clean, replace metal gear, fix drive axle.

成因：顯示面板排線鬆脫、驅動IC燒壞、電源供應電壓不穩。維修：重插加固排線、替換顯示模塊、維修穩壓電路。

Cause: Loose display cable, burnt driver IC, unstable power supply voltage. Repair: Reconnect cable, replace display module, fix voltage regulator circuit.

成因：咖啡粉滲入按鈕內部氧化、彈簧疲勞斷裂、按鈕塑膠變形卡滯。維修：拆解清潔除氧化、替換內部彈簧、更換全新開關按鈕模組。

Cause: Powder infiltration & oxidation, broken spring, deformed plastic button. Repair: Disassemble clean oxidation, replace spring & full button module.

成因：空氣乾燥、金屬導粉管未接地、出粉嘴無抗靜電設計。維修：加裝接地線、安裝抗靜電毛刷、更換木質/塑膠導粉嘴。保養：環境加濕減少靜電累積。

Cause: Dry air, ungrounded metal chute, no anti-static spout. Repair: Install ground wire & anti-static brush, swap plastic chute. Maintenance: Humidify working space.

解決方案：駿弘維修常備歐美、德意瑞進口原廠替換零件庫，刀盤、馬達、電路板、齒輪、密封件現貨供應，無需海外漫長訂貨，當天可完成更換維修。

Solution: JunHong stocks original EU/Germany/Italy/Switzerland spare parts including burrs, motors, PCB, gears & seals, same-day repair without long overseas order waiting.

每日：清潔出粉口、擦拭機身表面；每週：拆卸刀盤刷除殘粉；每月：食品級除油劑深度清洗刀盤與豆倉；每季：檢查軸承潤滑、鎖緊全部固定螺絲；商用機建議每半年到門店專業保養一次。