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Lexmark E250DN Service Manual - Page 23

Acronyms, Dual In-Line Memory Module - photoconductor reset

UPC - 734646062992

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Acronyms ACM ADC ASIC CBM CRC DIMM EEPROM ENA FRU HBP HVPS LCD LED LSU LVPS NVRAM PC PCL POR POST PPDS PRC PSO RIP TAR SDR SWE USB V ac V dc Autocompensator Mechanism (or paper feed) Analog-to-digital Converter Application Specific Integrated Circuit Complete Bill Of Material Cyclic Redundancy Check Dual In-Line Memory Module Erasable Electrically Programmable Read-Only Memory External Network Adapter Field Replaceable Unit Host Based Printing High Voltage Power Supply Liquid Crystal Diode Light Emitting Diode Laser Scanning Unit Low Voltage Power Supply Nonvolatile Random Access Memory Photoconductor Printer Control Language Power-On Reset Power-On Self Test Personal Printer Data Stream People's Republic of China Participating Standards Organization Raster Image Processor Toner Add Roll Synchronous Dynamic RAM Shipped With Equipment Universal Serial Bus Volts alternating current Volts direct current 4512-220, -230 General information 1-9

Section	Page
Table of contents	5
Notices and safety information	7
Laser notice	7
Laser	7
Avis relatif à l’utilisation de laser	7
Avvertenze sui prodotti laser	7
Avisos sobre el láser	8
Declaração sobre Laser	8
Laserinformatie	8
Lasermeddelelse	8
Huomautus laserlaitteesta	9
Laser-notis	9
Laser-melding	9
Avís sobre el Làser	9
Safety information	11
Consignes de sécurité	11
Norme di sicurezza	11
Sicherheitshinweise	12
Pautas de Seguridad	12
Informações de Segurança	12
Informació de Seguretat	13
Preface	14
Definitions	14
1. General information	15
Models	15
Maintenance approach	15
Overview of the operator panel	16
Specifications	17
Tips on preventing jams	21
Tools	22
Acronyms	23
2. Diagnostic information	25
Start	25
Power-On Self Test (POST) sequence	26
Light patterns and error messages	26
Ready/Power Saver	28
l	28
Busy	28
W	28
Hex Trace Ready	28
x	28
Waiting	29
l	29
Flushing/Resolution reduced	29
W	29
Not ready	29
Close door	30
Insufficient collation area/Insufficient memory	30
Cancel job/Reset printer	30
l	30
l	30
l	30
l	30
Load print media	31
l	31
Load manual feeder	31
l	31
Toner low	31
l	31
Toner cartridge region mismatch	32
l	32
Photoconductor kit life warning	32
W	32
Replace photoconductor (printer hard stop)	32
W	32
Programming engine code/Programming system code	33
l	33
l	33
l	33
Invalid engine code/Invalid network code	33
l	33
Service error	33
W	33
W	33
W	33
W	33
Printer error	34
Paper jam printer error	34
l	34
Short media	34
Output bin full	35
W	35
Paper jam at the input sensor	38
l	38
l	38
Paper jam in the manual feeder	38
l	38
l	38
l	38
Paper jams between the input and exit sensors	38
l	38
l	38
Paper jams as a printed job exits the printer	38
l	38
l	38
Paper jam in the 250-sheet tray	39
l	39
l	39
l	39
Paper jam in the 550-sheet drawer	39
l	39
l	39
l	39
Paper jam (duplex)	39
Paper jam (duplex front)	39
Paper jam (duplex rear)	40
l	40
W	40
Paper jam (duplex - unknown location)	40
l	40
W	40
Paper jam (duplex - unsupported size)	40
l	40
W	40
Complex page	41
l	41
Insufficient collation area	41
l	41
Network interface errors	42
l	42
Resource save off - deficient memory	42
l	42
Font error	42
Insufficient defrag memory	43
ENA connection lost	43
W	43
Host interface disabled	43
W	43
Memory full	44
l	44
Short media	44
l	44
Invalid engine code	44
l	44
Invalid network code	45
l	45
Toner cartridge region mismatch	45
l	45
Change toner cartridge/invalid refill	45
W	45
l	45
Missing/Defective toner cartridge	46
l	46
l	46
Unsupported toner cartridge	46
l	46
Too many options attached	46
Unsupported flash option	47
Service primary code	48
W	48
Service secondary error codes	48
Service tertiary error codes	49
Controller software	49
Transfer roll or tray 2	49
Fuser, fan, or toner sensor error	50
Printhead, transport motor, or RIP/engine communication error	51
NVRAM failure	52
Network error	52
Messages and error codes	53
Symptom tables	61
Service checks	63
1. Power to the LVPS/HVPS	63
2. Power from the LVPS/HVPS to the controller card	63
3. Cables are plugged in correctly, especially for the operator panel. The printer will not power-up without a functioning operator panel.	63
4. The controller card assembly.	63
5. The operator panel. See “Operator panel service check” on page 3-43.	63
1. Turn the printer off.	63
2. Disconnect the LVPS/HVPS cable from the controller card at J19.	63
3. Turn the printer on.	63
4. Verify +24 V dc on positions 8 and 9 of the cable connector.	63
5. If voltage is correct, check the continuity in the other conductors of the cable. If the cable is good, check the connectors to the controller board.	63
6. Verify that pins 7 and 12 on both the cable and the card connector are grounded.	63
7. If grounds are not correct on the cable, but the cable posses continuity otherwise, check the LVPS/HVPS.	63
8. If the grounds are not correct on the controller card, replace the controller card. (Check with one probe on the connector pin and the other on the card’s ground plane found at each screw head.)	63
Paper jam error indication during POST	67
Media picks during POST and/or continuously	67
Media picks but stops halfway through the printer	68
Media never picks	68
Media occasionally mispicks or picks multiple sheets at once	68
Media skews	69
Media “trees,” wrinkles, stacks poorly, or curls	69
Blank page	70
Black page	71
Heavy background	71
Partial blank image/white spots (no repeating pattern)	72
Variation in image density horizontally across page	72
Poor fusing of image	72
Light print	73
White or black lines or bands	73
Toner on back of page	73
Solving print quality problems	74
3. Diagnostic aids	79
Accessing service menus	79
1. Turn off the printer.	79
2. Open the front access cover and turn on the printer while pressing and holding.	79
3. Close the cover once thelight displays.	79
1. Turn off the printer.	79
2. Open the front access cover and press and holdwhile turning on the printer.	79
3. Close the cover when the light displays.	79
Configuration Menu printout sample	80
Diagnostics mode printout sample	81
Configuration menu selections	82
Diagnostics mode selections	86
Adjustment procedures	87
Printhead assembly electronic adjustment	87
Printhead assembly mechanical adjustment	91
4. Repair information	93
Handling ESD-sensitive parts	93
Removal procedures	93
Front access cover removal	94
Left side cover removal	96
Right side cover removal	97
Rear cover removal	98
Top cover removal	99
Auto comp removal	101
Auto comp clutch removal	102
Auto comp drive shaft assembly removal	103
Bezel removal	104
Controller card removal	105
Cover open sensor removal	107
Developer drive coupling assembly removal	108
Duplex removal	110
a. Remove the screw (A) and the screw (B) at the controller shield.	110
b. Remove the screw (C) opposite from screw (B) on the other side of the printer.	110
Duplex gear drive	112
Fan removal	113
Flag removal (top cover right)	113
Fuser removal	114
Fuser power cable removal	116
Link developer drive and access door removal	117
LVPS/HVPS card assembly removal	118
Main motor drive removal	120
Manual feed sensor removal	122
Manual paper feed clutch	123
Manual feed solenoids	124
Media level indicator removal	125
Narrow media sensor removal	127
Operator panel removal	128
Paper exit guide assembly removal	129
Paper feed rollers (autocompensator tires) removal	130
Paper input and duplex sensor removal	131
Printhead removal	132
Reversing solenoid removal	133
Toner level sensor removal	133
Transfer roll removal	134
Tray 2 auto comp tire removal	135
Upper front frame group removal	136
Wear strip removal (tray 1)	138
Wear strip removal (tray 2)	138
5. Locations and connections	141
Locations	141
Connectors	144
6. Preventive maintenance	145
Safety inspection guide	145
Lubrication specifications	145
Maintenance kits	145
7. Parts Catalog	147
How to use this parts catalog	147
Assembly 1: Covers	148
Assembly 1: Covers	149
1-1	149
40X5069	149
1	149
1	149
2	149
40X5068	149
1	149
1	149
3	149
40X2839	149
1	149
1	149
4	149
40X2858	149
1	149
1	149
5	149
40X2837	149
1	149
1	149
6	149
40X2843	149
1	149
1	149
7	149
40X2844	149
1	149
1	149
8	149
40X2855	149
1	149
4	149
9	149
40X2854	149
1	149
4	149
10	149
40X2842	149
1	149
1	149
11	149
40X2836	149
1	149
1	149
12	149
40X2852	149
1	149
1	149
12	149
40X2814	149
1	149
1	149
13	149
40X2840	149
1	149
1	149
Assembly 2: Electronics	150
Assembly 2: Electronics	151
2-1	151
40X2804	151
1	151
2	151
40X2800	151
1	151
2	151
40X2801	151
1	151
2	151
40X2802	151
1	151
3	151
40X2833	151
1	151
1	151
1	151
1	151
1	151
4	151
40X2823	151
1	151
1	151
5	151
40X2813	151
1	151
1	151
6	151
40X2856	151
1	151
1	151
7	151
40X2828	151
1	151
1	151
8	151
40X2805	151
1	151
1	151
8	151
40X2851	151
1	151
1	151
9	151
40X2819	151
1	151
9	151
40X2820	151
1	151
10	151
40X2809	151
1	151
11	151
40X2824	151
1	151
1	151
12	151
40X2845	151
1	151
1	151
13	151
40X2826	151
1	151
1	151
14	151
40X2846	151
1	151
1	151
Assembly 3: Frame	152
Assembly 3: Frame	153
3-1	153
40X2834	153
1	153
2	153
40X2822	153
1	153
3	153
40X2858	153
1	153
1	153
4	153
40X2850	153
N/A	153
4	153
4	153
4	153
2	153
2	153
5	153
40X2853	153
1	153
1	153
6	153
40X2841	153
1	153
1	153
7	153
56P1820	153
2	153
8	153
40X2838	153
1	153
1	153
9	153
40X2857	153
1	153
1	153
10	153
40X2830	153
1	153
1	153
11	153
40X2831	153
1	153
1	153
12	153
40X2832	153
1	153
1	153
13	153
40X2825	153
1	153
1	153
14	153
40X2829	153
1	153
1	153
15	153
40X2821	153
1	153
1	153
16	153
40X5234	153
1	153
1	153
NS	153
40X2847	153
1	153
1	153
NS	153
40X2848	153
1	153
1	153
NS	153
40X2849	153
1	153
1	153
NS	153
7377298	153
1	153
NS	153
40X2817	153
1	153
2	153
Assembly 4: Options	154
NS	154
40X1364	154
1	154
NS	154
40X1365	154
1	154
NS	154
40X1367	154
1	154
NS	154
40X1368	154
1	154
NS	154
40X1513	154
1	154
NS	154
40X1514	154
1	154
NS	154
40X1512	154
1	154
NS	154
40X1515	154
1	154
Assembly 5: Power cords	155
NS	155
40X0289	155