PROCEDURE.................................................................................3-31
3.10 OPTICS ANTI-CONDENSATION HEATER INSTALLATION
(OPTION) ..............................................................................................3-33
3.12 KEY COUNTER.....................................................................................3-40
4. SERVICE TABLES...................................................................... 4-1
4.1 GENERAL CAUTION ................................................................................4-1
4.1.1 AIO CARTRIDGE (ALL-IN-ONE CARTRIDGE) ................................4-1
4.1.2 TRANSFER ROLLER UNIT..............................................................4-1
4.1.3 SCANNER UNIT...............................................................................4-1
4.1.4 LASER UNIT.....................................................................................4-2
4.1.5 FUSING UNIT...................................................................................4-2
4.1.6 PAPER FEED ...................................................................................4-2
4.1.7 OTHERS...........................................................................................4-2
4.2.1 SERVICE PROGRAM MODE OPERATION.....................................4-3
4.1.12 APS AND PLATEN/DF COVER SENSOR OUTPUT DISPLAY
(SP4-301) .....................................................................................4-55
4.1.15 SERIAL NUMBER INPUT (SP5-811) ...........................................4-57
4.3 USER TOOLS .........................................................................................4-58
4.1.1 HOW TO ENTER AND EXIT USER TOOLS ..................................4-58
4.1.2 USER TOOLS TABLE ....................................................................4-58
4.4 LEDS .......................................................................................................4-60
4.5 SPECIAL TOOLS AND LUBRICANTS ....................................................4-60
4.5.1 SPECIAL TOOLS ...........................................................................4-60
4.5.2 LUBRICANTS .................................................................................4-60
4.6 ROM HISTORY ........................................................................................4-61
PREVENTIVE MAINTENANCE
SM
iii
Rev. 01/2001
A250