Ricoh FW780 Service Manual page 218

5.5 FUSING ..................................................................................................... 5-7
5.5.1 FUSING UNIT REMOVAL........................................................................................... 5-7
5.6 T & S CORONA UNIT................................................................................ 5-9
6.5.1 TRANSFER AND SEPARATION CORONA WIRE REPLACEMENT......................... 5-9
5.8 COPY QUALITY ADJUSTMENT ............................................................. 5-11
5.8.4 REGISTRATION ADJUSTMENT .............................................................................. 5-11
6. TROUBLESHOOTING.................................................................. 6-1
6.2 SERVICE CALL CONDITIION................................................................... 6-1
6.2.12 SC CODE E-14: ZERO CROSS SIGNAL DETECTION ABNORMAL ...................... 6-1
6.2.13 SC CODE E-15: MAIN SWITCH ABNORMAL (U.S.A. VERSION ONLY) ................ 6-1
6.3 BLOWN FUSE TABLE .............................................................................. 6-2
6.3.1 POWER SUPPLY UNIT .............................................................................................. 6-2
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