Ricoh C249, Service Manual

Page: 16 / 486

C249/C264 iv SM
5.7.8 SP6-64: MASTER PUSHING VALUE (NOT USED).......................5-18
5.7.9 SP6-100 TO 107: PAPER REGISTRATION - EACH SPEED.........5-19
5.7.10 SP6-116 TO 123: PAPER MIDDLE BUCKLE (NOT USED) .........5-20
5.7.11 SP6-124 TO 131: PAPER FRONT BUCKLE (NOT USED) ..........5-22
5.8 MAIN MENU NO.7: MEMORY CLEAR....................................................5-25
5.8.1 SP TABLE ......................................................................................5-25
5.8.2 SP7-1: FACTORY SETTINGS CLEAR...........................................5-25
5.9 MAIN MENU NO.8: SYSTEM TEST........................................................5-26
5.9.1 SP TABLE ......................................................................................5-26
5.9.2 SP8-1: DOWNLOAD MAIN FIRMWARE ........................................5-26
5.9.3 SP8-2: UPLOAD MAIN FIRMWARE...............................................5-27
5.9.4 SP8-10: TEST PATTERNS ............................................................5-27
5.9.5 SP8-21: PAPER FEED TEST (15 RPM).........................................5-27
5.9.6 SP8-22: FREE RUN PAPER FEED (15 RPM) ...............................5-27
5.9.7 SP8-18: TEMPORARY SECURITY ................................................5-28
DETAILED DESCRIPTIONS
6. DETAILED SECTION DESCRIPTIONS ....................................... 6-1
6.1 MECHANISM OVERVIEW ........................................................................6-1
6.1.1 COMPONENT LAYOUT ...................................................................6-1
6.1.2 ELECTRICAL COMPONENT LAYOUT ............................................6-2
6.1.3 DRIVE LAYOUT ...............................................................................6-7
6.2 MASTER EJECT UNIT..............................................................................6-8
6.2.1 OVERVIEW ......................................................................................6-8
6.2.2 MASTER CLAMPER OPENING MECHANISM ................................6-9
6.2.3 MASTER EJECT ROLLER MECHANISM ......................................6-10
6.2.4 PRESSURE PALTE MECHANISM.................................................6-11
6.3 SCANNER UNIT......................................................................................6-12
6.3.1 OVERVIEW ....................................................................................6-12
6.3.2 BOARD LAYOUT............................................................................6-13
6.3.3 AUTO BACKGROUND CORRECTION ..........................................6-14
6.3.4 MTF FILTER...................................................................................6-14
6.3.5 SMOOTHING FILTER ....................................................................6-14
6.3.6 MAIN SCAN ENLARGEMENT/REDUCTION .................................6-14
6.3.7 BINARY PROCESSING .................................................................6-15
6.3.8 FINE MODE....................................................................................6-15
6.3.9 THERMAL HEAD............................................................................6-16
6.4 MASTER FEED .......................................................................................6-18
6.4.1 OVERVIEW ....................................................................................6-18
6.4.2 AUTO ADJUSTABLE MASTER SET..............................................6-19
6.4.3 THERMAL HEAD DRIVING MECHANISM.....................................6-20
6.4.4 MASTER BUFFER MECHANISM...................................................6-21
6.4.5 DETECTION OF MASTER IN THE LOWER MASTER TRAY........6-22
6.4.6 DUCT PLATE MECHANISM ..........................................................6-23
6.4.7 MASTER FEED MECHANISM .......................................................6-25
6.4.8 CLAMPER AND TENSION ROLLER MECHANISM.......................6-26
6.4.9 MASTER PUSH MYLAR ................................................................6-27
6.4.10 2ND DRUM MASTER SENSOR...................................................6-28
Rev. 10/2004