Ricoh A250 Service Manual page 696

3.8.2 EXTENDED MEMORY BOARD INSTALLATION
PROCEDURE ................................................................................ 3-31
3.9 DRUM HEATER INSTALLATION (OPTION) .......................................... 3-32
3.10 OPTICS ANTI-CONDENSATION HEATER INSTALLATION
(OPTION).............................................................................................. 3-33
3.11 TRAY HEATER INSTALLATION .......................................................... 3-34
SERVICE TABLES
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 SERVICE PROGRAM MODE ................................................................... 4-3
4.2.1 SERVICE PROGRAM MODE OPERATION .................................... 4-3
4.1.2 SERVICE PROGRAM MODE TABLES ........................................... 4-4
4.1.3 TEST PATTERN PRINTING (SP5-902)......................................... 4-38
4.1.4 INPUT CHECK (SP5-803) ............................................................. 4-39
4.1.5 OUTPUT CHECK (SP5-804) ......................................................... 4-44
4.1.6 COPY JAM HISTORY DISPLAY (SP7-903) .................................. 4-46
4.1.7 ORIGINAL JAM HISTORY DISPLAY (SP7-905) ........................... 4-47
4.1.8 SYSTEM PARAMETER AND DATA LISTS (SP5-992).................. 4-48
4.1.9 MEMORY ALL CLEAR (SP5-801) ................................................. 4-49
4.1.10 PROGRAM UPLOAD/DOWNLOAD............................................. 4-50
4.1.11 NVRAM DATA DOWNLOAD ....................................................... 4-53
4.1.12 APS AND PLATEN/DF COVER SENSOR OUTPUT DISPLAY
(SP4-301)..................................................................................... 4-55
4.1.13 DF APS SENSOR OUTPUT DISPLAY (SP6-901) ....................... 4-56
4.1.14 DISPLAY LANGUAGE (SP5-808)................................................ 4-57
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
5. PREVENTIVE MAINTENANCE SCHEDULE ............................... 5-1
SM iii
Rev. 10/99
A250