故障原因：電源線斷裂、保險絲燒毀、開關觸點氧化、主板變壓器損壞。自檢：更換插座測試、檢查電源插頭。維修：更換電源線、保險絲、電源開關、維修驅動主板。保養建議：避免拉扯電源線，定期清理插頭灰塵。

Causes: Broken power cord, blown fuse, oxidized power switch, damaged transformer PCB. Self-check: Test another power socket. Repair: Replace cord/fuse/switch, fix mainboard. Maintenance: Do not pull cord violently, clean plug regularly.

故障原因：刀盤堵塞積油垢、進料口卡豆、傳動齒輪打滑、出粉通道卡死。自檢：清空豆倉，拆洗刀盤。維修：拆解清洗研磨組、更換磨損齒輪、疏通出粉管路。保養：每週清理殘粉油垢。

Causes: Burr clogged by coffee oil, beans stuck in hopper, slipping drive gear, blocked chute. Self-check: Empty hopper, clean burrs. Repair: Disassemble & clean grinding unit, replace worn gears, unclog chute. Maintenance: Clean residual powder weekly.

故障原因：刀盤變形崩齒、刀盤固定螺絲鬆動、調節刻度座偏移、防震膠老化。維修：校準刀盤、更換磨損刀盤、鎖緊固定件、替換老化膠墊。保養：禁止研磨堅硬物體撞擊刀盤。

Causes: Damaged burr teeth, loose burr screws, misaligned adjustment ring, aged shock pad. Repair: Recalibrate burr, replace worn burrs, fasten fittings, renew rubber pad. Maintenance: Never grind hard foreign objects.

故障原因：金屬異物卡入刀盤、軸承磨損缺油、齒輪缺潤滑油、機殼防震墊老化。維修：取出異物、更換軸承、補充食品級潤滑油、替換防震膠。保養：勿將金屬器具放入豆倉。

Causes: Metal foreign object stuck between burrs, worn dry bearing, unlubricated gear, aged shock absorber. Repair: Remove debris, replace bearing, add food-safe lubricant, renew rubber mount. Maintenance: No metal tools inside hopper.

故障原因：馬達過載發熱、溫控保護開關跳脫、主板過流保護、刀盤卡死負荷過大。維修：拆解清潔減輕負載、更換溫控開關、維修主板電路。保養：避免長時間連續研磨，間歇散熱。

Causes: Overheated motor, tripped thermal cut-off, overcurrent PCB protection, jammed burr overload. Repair: Deep clean to reduce load, replace thermal switch, repair circuit board. Maintenance: Avoid non-stop long grinding, allow cooling intervals.

故障原因：調節齒條斷齒、調節環卡扣斷裂、刀盤座卡死無法移動。維修：更換調節齒輪組、修復卡扣、拆解潤滑滑動座。保養：調節時輕轉刻度盤，勿大力硬扭。

Causes: Broken adjustment rack, cracked dial clip, jammed burr mount slide. Repair: Replace adjustment gear set, fix clip, lubricate sliding base. Maintenance: Turn dial gently, do not force twist.

故障原因：出粉防飛濺膠圈老化變形、通道積粉氣流衝擊、接粉杯密封不良。維修：更換防飛濺膠圈、疏通積粉通道、替換接粉杯密封墊。保養：每次使用後擦拭出粉口殘粉。

Causes: Deformed anti-splash rubber ring, clogged chute air turbulence, loose portafilter seal. Repair: Renew splash guard rubber, clear powder blockage, replace seal pad. Maintenance: Wipe chute residue after each use.

故障原因：豆倉卡扣斷裂、底部密封膠圈硬化、豆倉螺絲鬆動。維修：更換卡扣、替換密封膠、鎖緊固定螺絲。保養：拆卸豆倉時輕拿輕放，避免摔撞。

Causes: Broken hopper clip, hardened bottom rubber seal, loose mounting screws. Repair: Replace clip & seal, fasten screws. Maintenance: Handle hopper gently, avoid dropping impact.

故障原因：刀盤生鏽、軸承潤滑油滲漏污染咖啡、殘粉長時間發霉。維修：拋光除鏽或更換刀盤、清洗研磨組更換食品潤滑油、深度除霉。保養：3天內清空殘粉，保持機體乾燥。

Causes: Rusted burrs, leaking bearing grease contaminating powder, moldy residual coffee. Repair: Polish rust or replace burrs, deep clean grinding unit & renew food-grade lube, mold removal. Maintenance: Empty leftover powder within 3 days, keep machine dry.

故障原因：定量感應器髒污、計時主板故障、下料閥門卡滯、電壓不穩。維修：清潔感應探頭、維修/更換計數主板、疏通下料閥。保養：每兩週清潔定量感應區域。

Causes: Dirty dose sensor, faulty timer PCB, stuck dosing gate, unstable voltage. Repair: Clean sensor probe, repair/replace timer board, unclog dosing valve. Maintenance: Clean sensor area biweekly.

故障原因：觸發開關短路、主板繼電器燒粘、觸控面板程式故障。維修：更換觸發開關、替換繼電器、重刷/維修觸控主板。保養：避免液體潑濺控制面板。

Causes: Short-circuited trigger switch, welded PCB relay, touch panel firmware error. Repair: Replace trigger switch & relay, repair touch control board. Maintenance: Prevent liquid spillage on control panel.

故障原因：面板進水受潮、觸控IC燒毀、排線鬆脫斷線。維修：乾燥除濕、更換觸控板、重接/替換排線。保養：清潔面板使用微濕布，勿直接潑水。

Causes: Water damaged panel, burnt touch IC, loose broken ribbon cable. Repair: Dehumidify internal parts, replace touch PCB, reattach ribbon wire. Maintenance: Clean panel with slightly damp cloth, no direct water spray.

故障原因：馬達碳刷磨損、電容衰減、內部積粉增加負載、軸承阻力過大。維修：更換碳刷與啟動電容、深度拆解清潔、替換磨損軸承。保養：定期清理機身內殘粉減少負荷。

Causes: Worn motor carbon brush, degraded capacitor, heavy residual powder load, high bearing friction. Repair: Replace brush & start capacitor, full deep clean, renew bearing. Maintenance: Regular internal powder cleaning to reduce motor load.

故障原因：防震腳墊脫落老化、刀盤不平衡、馬達固定支架鬆動。維修：替換全套防震膠腳、校準刀盤平衡、鎖緊馬達固定支架。保養：避免放置凹凸不平檯面使用。

Causes: Missing/aged anti-vibration feet, unbalanced burr assembly, loose motor bracket. Repair: Renew full rubber feet set, balance burr group, fasten motor mount. Maintenance: Use on flat even countertop only.

故障原因：環境乾燥、出粉金屬通道未接地、殘粉堆積增強靜電。維修：安裝接地導電膠條、深度清洗通道殘粉。保養：室內適度保濕，每次清潔出粉通道。

Causes: Dry environment, ungrounded metal chute, thick residual powder buildup. Repair: Install conductive anti-static strip, deep clean chute. Maintenance: Maintain mild room humidity, clean chute after every use.

故障原因：紅外感應頭被咖啡油垢遮蓋、感應元件損壞、排線接觸不良。維修：酒精擦拭感應鏡頭、更換感應模組、重接排線插頭。保養：每週擦拭豆倉感應窗口。

Causes: IR sensor lens covered by coffee grease, damaged sensor module, loose ribbon connector. Repair: Wipe lens with alcohol pad, replace sensor unit, reattach connector. Maintenance: Wipe hopper sensor window weekly.

故障原因：通風口堵塞積粉、馬達持續過載、散熱片灰塵堆積。維修：疏通散熱風道、清理馬達散熱片、修復過載研磨組。保養：每月清理機身散熱孔灰塵。

Causes: Clogged ventilation vents, continuous motor overload, dusty heat sink. Repair: Clear air vents, clean motor heat sink, fix overloaded grinding unit. Maintenance: Clean cooling holes monthly.

故障原因：刀盤殘粉油垢凝固、傳動軸缺油、異物卡入研磨組。維修：全拆解浸泡清洗、軸承補充食品潤滑油、取出卡入雜物。保養：手搖磨建議每兩週完整拆洗一次。

Causes: Solidified coffee grease on burrs, dry drive shaft, foreign debris jammed inside. Repair: Full disassembly soak cleaning, lubricate shaft bearing, remove stuck debris. Maintenance: Full hand grinder deep clean biweekly.

故障原因：殘粉潮濕積存、密閉研磨組不透氣、長時間不清理。維修：食品級除霉劑完整拆解消毒、所有配件浸泡清洗、烘乾組裝。保養：每日清空剩粉，每週深度清潔刀盤。

Causes: Damp trapped residual powder, airtight grinding chamber, long-term neglect. Repair: Full disassembly sanitize with food-safe mold remover, soak all parts, fully dry before reassembly. Maintenance: Empty leftover powder daily, deep clean burr weekly.

故障原因：只處理表面症狀未更換磨損核心零件、清洗不徹底殘留油垢、調校參數不標準。駿弘優勢：全套替換耗損件、完整拆解清洗、標準工廠級校準，提供維修保固。保養：遵循技師保養週期建議，定期回店檢查。

Causes: Only surface fix without worn core parts replacement, incomplete grease cleaning, uncalibrated settings. Junghong Advantage: Full wear part replacement, total disassembly cleaning, factory-standard calibration with repair warranty. Maintenance: Follow technician maintenance schedule, periodic shop inspection.