Oki OKIPAGE 10ex Troubleshooting Manual

Also see for OKIPAGE 10ex: User guide Specification sheet User guide Setup guide Maintenance manual

Contents

Oki OKIPAGE 10ex Troubleshooting Manual Manual pdf 24 page image

40990901TH Rev.1 24 /3.12 Power Supply Board(1) Low voltage power supplyAn AC power from an inlet is input to a transformer via fuses, AC switch and noise filter andthen lowered to a 32 VAC power and a 10 VAC power. The 32 VAC power is converted toa +38 VDC output through a rectifying/smoothing circuit. A +5 VDC output is derived from theresultant +38 VDC power through a regulation circuit. The 10 VAC power is converted to a+8 VDC output and a -8 VDC output through a rectifying/smoothing circuit.(2) High voltage power supplyThe +5 VDC power supplied to the high voltage power supply unit via the cover openmicroswitch as source voltage. The high voltage power supply unit supplies necessaryvoltage for electro-photography print to output terminals CH, DB, SB, TR, and CB accordingto a control signal from the CPU. The table on the next page shows the relationship betweencontrol signals and high voltage outputs.Power supply boardF3F2F1LFGNThermal Fuse121, 23, 465AC Transformer+38VSmoothingCircuit+5VStabilizingCircuit+38 V 17, 18+5 V 11, 120 V 9, 15, 16+8 V 24-8 V 22Fuse RatingsAC InputFuseF1F2F3125 V 6.3 A125 V 1.6 A125 V 3.15 A120 V 230 V250 V 5 A–250 V 2.5 AACIN CN1 CN2±8VRectifying/SmoothingCircuitCN3FilterCircuit+3.3 VGeneratingCircuit13, 14+3.3 VSCLKSQCRDATA INDATA OUTCHDBSBTRCBCPUHigh VoltagePower SupplyUnit+5VCover Open SwitchTRSEL 3TRSEL 4TRSEL 5