Oki OF5300, Service Manual

Page: 8 / 560

Table of Contents Page
........5-6-3 TR1 and TR2 241
........5-6-4 CH 242
........5-7 Photosensors 243
A3.7 UNC5 (NCU) Circuit Diagram 244
....Block Diagram of UNC (Figure A3.7.1) 245
A3.8 TELU Circuit Diagram (option) 246
....Block Diagram of TEL-U (option) (Figure A3.8.1) 247
A3.11 MEMO (memory) Circuit Diagram 248
....Related Signals of Memory Board (option) (Figure A3.11.1) 249
A3.12 CTR Circuit Diagram (PC interface unit: option) 250
....Related Signals of P050 (PC interface unit) (Figure A3.12.1) 251
....Block Diagram of 2nd Tray (Figure A3.13.1) 252
A3.13 TQSB (Second tray) Circuit Diagram: option 253
B Print Operation Description
Overview 254
B2.1 Mechanical Components 255
....1) Image drum cartridge 256
....2) Resist motor 257
....3) Drum motor 258
....4) LED head 259
....5) Fuser 260
....Layout of Print Station Components (FigureB2.1) 261
B2.2 Description of Print Operations 262
....B2.2.1 Process Operations 263
........1) Hopping and feeding 264
........2) Charging 265
........3) Exposure 266
........4) Developing 267
........5) Transfer 268
........6) Fusing 269
........7) Cleaning 270
........8) Cleaning of rollers 271
....B2.3 Errors 272
........B2.3.1 Errors List 273
........B2.3.2 Major Trouble Errors 274
............B2.3.2.1 Fuser Error (Print Alarm 4) 275
............B2.3.2.2 Fan Error (Print Alarm 3) 276
............B2.3.2.3 Paper Feed Monitoring 277
............B2.3.2.4 2'nd Tray Communication Error (Printer Alarm
2) 278
............B2.3.2.5 Cover Open 279
........B2.3.3 Recoverable Errors 280
............B2.3.3.1 Toner Low Detection 281
............Composition 282