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Ricoh AC205 Service Manual - Page 112

MARKS ON FRONT OF Digital, Digital Pri

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PRINTING QUALITY PROBLEMS 4.5.13 MARKS ON FRONT OF PAGE Description: Background or black marks are visible on the output print. Digital Printer Digital Printer Digital Printer Digital Printer Digital Printer Cause 1. Toner leakage due to incorrectly sealed toner cartridge. 2. Transfer roller is contaminated. Solution B273T926.WMF 1. Replace the toner cartridge. 2. Perform the PC cleaning mode 2-3 times. Then perform the self-test 2-3 times. 4.5.14 MARKS ON BACK OF PAGE Description: Background or black marks are visible at 47.1 or 75.4 mm intervals, on rear side of the output print. Digital Digital Pri Digital Printer Digital Printer Digital Printer Cause 1. Transfer roller is contaminated 2. Pressure roller is contaminated. Solution B273T927.WMF 1. Perform the PC cleaning mode 2-3 times. Then perform the self-test 2-3 times. Replace the transfer roller if the problem persists. 2. Disassemble the fusing unit and clean the hot roller and the pressure roller. Clean the area between the hot roller and the thermistor. (Use caution. Do not damage the rollers.) B273 4-26 SM

Section	Page
B273 SERVICE MANUAL	5
LEGEND/DOCUMENTATION HISTORY	11
TABLE OF CONTENTS	13
INSTALLATION	27
INSTALLATION	29
PREVENTIVE MAINTENANCE	31
PREVENTIVE MAINTENANCE	33
PM INTERVALS	33
REPLACEMENT AND ADJUSTMENT	35
REPLACEMENT AND ADJUSTMENT	37
GENERAL PRECAUTIONS	37
SERVICING THE MACHINE	37
RELEASING PLASTIC LATCHES	37
COVERS	38
REAR COVER	38
SIDE COVERS	39
FRONT COVER	41
SCANNER ASSEMBLY	42
REASSEMBLING THE SCANNER ASSEMBLY	50
ADF MOTOR ASSEMBLY	51
OPERATION PANEL	54
MIDDLE COVER AND EXIT ROLLER	56
CONTROLLER SHIELD ASSEMBLY	58
ENGINE SHIELD ASSEMBLY AND EXIT BOARD	60
ENGINE SHIELD	60
EXIT BOARD	62
SMPS AND LIU	63
FUSING UNIT	65
FUSING UNIT ASSEMBLY	65
THERMOSTAT	66
FUSING LAMP	66
STRIPPER PAWLS	67
THERMISTOR	70
FAN	71
LSU	72
CRUM BOARD	73
DRIVE ASSEMBLY	74
COVER MID-FRONT	75
TRANSFER ASSEMBLY	76
FEED ASSEMBLY	78
PICK-UP ASSEMBLY AND SOLENOID	81
PICK-UP ASSEMBLY	81
SOLENOID	82
BY-PASS PICK-UP ROLLER AND PAPER FEED UNIT PICKUP ROLLER	83
TROUBLESHOOTING	85
TROUBLESHOOTING	87
PAPER PATH	87
COPY/SCAN DOCUMENT PATH	88
PRINTER PAPER PATH	90
PAPER JAM CONDITIONS	91
CLEARING DOCUMENT JAMS (ADF)	92
JAM0 (PAPER FEED AREA)	94
JAM1 (FUSING AREA OR AROUND THE TONER CARTRIDGE AREA)	95
JAM2 (PAPER EXIT AREA)	96
BY-PASS TRAY JAM	97
PAPER FEED PROBLEMS	98
INCORRECT PRINT POSITION	98
JAM 0	98
JAM 1	99
JAM 2	99
MULTI-FEEDING	100
PAPER IN THE FUSING UNIT	100
PAPER BECOMES ROLLED AROUND THE OPC DRUM	101
DEFECTIVE ADF	101
MACHINE MALFUNCTIONS	102
LCD DISPLAY DEFECTIVE	102
DEFECTIVE CONTROL PANEL	102
FUSING GEAR MELTS (OVERHEATS)	102
PAPER EMPTY 1	103
PAPER EMPTY 2	103
COVER OPEN 1	103
COVER OPEN 2	104
DEFECTIVE MOTOR OPERATION	104
NO POWER	104
PRINTED VERTICAL LINES BEND	105
PRINTING QUALITY PROBLEMS	106
INCORRECT PRINT POSITION	106
VERTICAL WHITE LINE	106
HORIZONTAL BLACK BANDS	107
BLACK/WHITE SPOTS	107
LIGHT IMAGE	108
DARK/BLACK IMAGE	108
UNEVEN DENSITY	109
BACKGROUND	109
GHOST 1	110
GHOST 2	110
GHOST 3	111
GHOST 4	111
MARKS ON FRONT OF PAGE	112
MARKS ON BACK OF PAGE	112
BLANK PAGE 1	113
BLANK PAGE 2	113
FAX AND PHONE PROBLEMS	114
NO DIAL TONE	114
DEFECTIVE MF DIAL	114
DEFECTIVE FAX FORWARD/RECEIVE	115
DEFECTIVE FAX FORWARD	115
DEFECTIVE FAX RECEIVE 1	115
DEFECTIVE FAX RECEIVE 2	116
DEFECTIVE FAX RECEIVE 3	116
DEFECTIVE FAX RECEIVE 4	116
DEFECTIVE AUTOMATIC RECEIVING	116
COPY PROBLEMS	117
WHITE COPY	117
BLACK COPY	117
UNUSUAL NOISE	117
DEFECTIVE IMAGE QUALITY	117
SCANNING PROBLEMS	118
PC SCANNING PROBLEMS	118
POOR QUALITY OF SCANNED IMAGES	118
ERROR MESSAGES	119
TONER CARTRIDGE	122
TONER CARTRIDGE PRECAUTIONS	122
REDISTRIBUTING TONER	123
TONER CARTRIDGE ERROR MESSAGES	124
TONER CARTRIDE DETAILS	125
SOFTWARE PROBLEMS	129
PRINTER DOES NOT OPERATE CORRECTLY 1	129
PRINTER DOES NOT OPERATE CORRECTLY 2	130
ABNORMAL PRINTING	131
SPOOL ERROR	131
NETWORK PROBLEMS	132
GENERAL PROBLEMS	132
WINDOWS PROBLEMS	133
SYNCTHRU INSTALLATION PROBLEMS	134
SERVICE PROGRAM MODE	135
SERVICE PROGRAM MODE	137
TECH MODE	137
HOW TO ENTER AND EXIT TECH MODE	137
DATA SET-UP	138
MACHINE TESTS	140
REPORTS	141
USER MODE	142
FIRMWARE DOWNLOAD	144
DOWNLOAD PROCEDURE	144
FIRMWARE RECOVERY PROCEDURE	147
ENGINE TEST MODE	148
HOW TO ENTER ENGINE TEST MODE	148
ENGINE TEST MODE TABLE	149
STATUS PRINT	151
DETAILED DESCRIPTIONS	153
DETAILED DESCRIPTIONS	155
PRINTER COMPONENT LAYOUT	155
FRONT VIEW	155
REAR VIEW	156
SYSTEM LAYOUT	157
PAPER FEED	157
TRANSFER ASSEMBLY	157
DRIVE ASSEMBLY	157
FUSING ASSEMBLY	158
SCANNING UNIT	159
LASER SCANNING UNIT (LSU)	159
TONER CARTRIDGE	160
NEW AIO DETECTION	161
TONER END DETECTION	161
CONTROLLER	162
MAIN PBA	162
ASIC	163
MEMORY	163
FLASH MEMORY	163
SDRAM	163
BATTERY BACKUP	163
SENSOR INPUT CIRCUIT	164
SMPS AND HVPS	165
HVPS	166
SMPS(SWITCHING MODE POWER SUPPLY)	168
FUSING UNIT AC POWER CONTROL	170
ENGINE	171
PAPER FEED	171
DRIVE	172
TRANSFER	172
FUSING	172
LASER SCANNING UNIT	173
OPERATION PANEL (OPE)	173
USB HOST	174
FAX SECTION	174
MODEM	174
LIU PBA	174
SPECIFICATIONS	175
SPECIFICATIONS	177
GENERAL SPECIFICATIONS	177
PHYSICAL SPECIFICATIONS	178
PRINT SPECIFICATIONS	178
SCAN SPECIFICATIONS	179
COPY SPECIFICATIONS	180
TELEPHONE SPECIFICATIONS	181
FAX SPECIFICATIONS	182
SOFTWARE SPECIFICATIONS	183
PAPER SIZES/WEIGHTS	183
APPENDIX	185
APPENDIX	187
BLOCK DIAGRAM	187