Ricoh M281 Series Service Manual page 573

MP 501/601 Electrical Components
No. Name
1 LDB
2 Toner cartridge connection PCB
3 Drum PCB
4 Drum heater PCB (Asia Only)
5 Toner cartridge PCB
6 Toner density sensor PCB
7 Controller board
SM
No. Name
11 IOB
12 Thermostat connection PCB
13 Power pack
14 Drum connection PCB
15 Connect-Left PCB
16 OPU board
17 Thermistor connection PCB
7-9
Product Overview
D255/D256/M281/M282