Ricoh Aficio 2035e Service Manual page 16

5.4.1 SELF-DIAGNOSTIC MODE AT POWER ON ...............................5-114
5.4.2 DETAILED SELF-DIAGNOSTIC MODE .......................................5-115
5.5 USER PROGRAM MODE .....................................................................5-117
5.5.1 HOW TO USE UP MODE.............................................................5-117
5.6 DIP SWITCHES.....................................................................................5-120
5.7 USING THE DEBUG LOG.....................................................................5-121
5.7.1 SWITCHING ON AND SETTING UP SAVE DEBUG LOG ...........5-121
5.7.2 RETRIEVING THE DEBUG LOG FROM THE HDD .....................5-125
5.7.3 RECORDING ERRORS MANUALLY ...........................................5-125
DETAILED DESCRIPTIONS
6. DETAILED SECTIOIN DESCRIPTIONS ...................................... 6-1
6.1 BOARD STRUCTURE...............................................................................6-2
6.1.1 BLOCK DIAGRAM............................................................................6-2
6.1.2 CONTROLLER .................................................................................6-4
6.2 IMAGE PROCESSING ..............................................................................6-7
6.2.1 OVERVIEW ......................................................................................6-7
6.2.2 SBU (SENSOR BOARD UNIT).........................................................6-8
6.2.3 AUTO IMAGE DENSITY (ADS) ........................................................6-9
6.2.4 IPU (IMAGE PROCESSING UNIT).................................................6-10
Overview.............................................................................................6-10
6.2.5 IMAGE PROCESSING MODES .....................................................6-11
6.2.6 SUMMARY OF IMAGE PROCESSING FUNCTIONS ....................6-13
6.2.7 IMAGE PROCESSING STEPS AND RELATED SP MODES.........6-14
Text Mode...........................................................................................6-14
Text/Photo Mode ................................................................................6-15
Photo Mode ........................................................................................6-16
Pale (Low-Density Mode)....................................................................6-17
Generation Copy Mode.......................................................................6-18
6.2.8 PRE-FILTERING ............................................................................6-19
6.2.9 BACKGROUND ERASE.................................................................6-20
6.2.10 INDEPENDENT DOT ERASE ......................................................6-21
6.2.11 LINE WIDTH CORRECTION........................................................6-22
6.2.12 FILTERING ...................................................................................6-23
Interactive SP Codes ..........................................................................6-23
Text Mode MTF Filter..........................................................................6-27
Text/Photo, Photo Mode Filter ............................................................6-28
Pale, Generation Mode Filter ..............................................................6-29
Photo Mode Smoothing for Dithering ..................................................6-30
Photo Mode Grayscale .......................................................................6-30
Photo Mode Image Quality .................................................................6-31
6.2.13 OTHERS.......................................................................................6-32
Vertical Black Line Correction.............................................................6-32
Density Settings ..................................................................................6-32
ADS Level...........................................................................................6-33
6.2.14 PRACTICAL APPLICATION OF SP MODES ...............................6-34
Solving Problems ................................................................................6-34
B135/B138 iv
Rev. 07/2004
SM