Ricoh B253 MP7500SP MT-C3

The amounts mentioned (K=1,000) as the PM interval indicate the number of prints or copies unless stated otherwise. These numbers are based on the PM counter.

Symbol key: C: Clean, R: Replace, L: Lubricate, I: Inspect, EM: Emergency Maintenance

SCANNER OPTICS
	EM	300K	450K	600K	Expected K	Note
1st, 2nd, 3rd Mirror		C	C	C		Optics cloth
Exposure Glass	C	C	C	C		Dry cloth or alcohol
Scanner Guide Rails		L	L	L		After cleaning with alcohol, lubricate scanner guide rails with Launa Oil.
Toner Shield Glass	C	C	C	C		Optics cloth
Reflector		C	C	C		Optics cloth

 

AROUND THE DRUM
	EM	300K	450K	600K	Expected K	Note
Charge Corona Grid		R		R	450	Blower brush.
Charge Corona Wire		R	C	R	450	Alcohol, or clean damp cloth.
Charge Wire Cleaning Pad		R		R	450
Cleaning Blade		R		R	500
Cleaning Brush		R		R	500
Charge Corona Casing		C		C		Alcohol, or clean damp cloth.
Internal Dust Filter		C	C	C		Blower brush.
ID Sensor		C	C	C		Blower brush. Do SP 3001 002 after cleaning.
Pick-off Pawls		I		I		Replace if necessary.
Potential Sensor		C	C	C		Blower brush.
Quenching Lamp		C	C	C		Dry cloth.
Transfer Entrance Stay		C	C	C		Dry cloth.
Ozone Filter (Top)		R		R
Cleaning Filter		R		R
Cleaning Side Seal		C	C	C		Dry cloth.
Cleaning Entrance Seal		C	C	C		Dry cloth.

 

DEVELOPMENT UNIT
	EM	300K	450K	600K	Expected K	Note
Developer		R		R		(^ 3.7.1) PM cycle is 350K.
Development Roller Shaft		C		C		Clean with blower brush and dry cloth every time the developer is replaced.
Development Roller		C		C
Development Filter		R	I	R		Blower brush.
Development Sleeve Surface		C	C	C		Dry cloth.
Drive Gears		C	C	C		Blower brush.
Entrance Seal		C	C	C		Blower brush, dry cloth.
Side Seals		C	C	C		Blower brush, dry cloth.
Toner Bottle Holder		C	C	C		Dry cloth.
Paddle Roller Shaft		C	C	C		Blower brush, dry cloth.
Used Toner Separation Unit		I		R