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Lexmark E320 Service Manual - Page 84

E220/E321/E323, NVRAM failure, Printhead assembly

UPC - 734646511162

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4500-E220/E321/E323 NVRAM failure Indicates a problem in the NVRAM. Replace the operator panel assembly. Primary Code Secondary Code Ready/Data Toner Low Load/ Remove Paper Paper Jam Error Ready/Data Toner Low Load/ Remove Paper Paper Jam Error Press Continue Tertiary Codes Press Continue Ready/Data Toner Low Load/ Remove Paper Paper Jam Error Press Continue NVRAM CRC failure (954). NVRAM chip failure (952). RIP firmware cannot communicate with secure NVRAM (951). NVRAM data does not match secure NVRAM (950). Note: NVRAM is on the operator panel printed circuit board (PCB) while secure NVRAM is on the controller PCB. Check margin alignments after replacing the operator panel assembly. See "Printhead assembly " on page 4-2 (steps 1 through 11) for more information. If margin errors are unacceptable, corrections can only be made through software. Contact the next level of support or Lexmark at 1-800-539-6275. 2-54 Service Manual

Section	Page
Table of contents	3
General information 11	3
Diagnostic information 21	3
Start 21	3
Diagnostics (E320/E322) 21	3
Diagnostics (E220/E321/E323) 235	3
Service checks 263	4
Diagnostic aids 31	4
Diagnostic aids (320/E322) 31	4
Printer operation modes 32	4
Printer modes summary table 33	4
Diagnostic aids 335	5
Diagnostic aids (E220/E321/E323) 335	5
Repair information 41	5
Handling electrostatic discharge (ESD)-sensitive parts 41	5
Adjustment 42	5
Lubrication 43	5
Removal procedures 44	5
Connector locations 51	5
Preventive maintenance 61	5
Parts catalog 71	6
How to use this parts catalog 71	6
Assembly 1: Covers (E320/E322) 72	6
Assembly 2: Frame 78	6
Assembly 3: Fuser 710	6
Assembly 4: Main drive 712	6
Assembly 5: Paper feed 714	6
Assembly 6: Printhead 716	6
Assembly 7: Electronics 718	6
Assembly 8: Options 722	6
Assembly 9: Cables 726	6
Assembly 10: Miscellaneous 727	6
Laser notices	7
Safety information	17
Preface	22
1. General information	23
Model differences	26
Printer operation	27
Printer dimensions and clearance	27
Options	28
Acronyms	29
2. Diagnostic information	31
Start	31
Diagnostics (E320/E322)	31
Operator panel	32
Status information	33
Attendance information	34
Service information	37
Service error codes	41
Operator panel light summary table	55
Error code table	56
POST	62
Symptom tables	62
Diagnostics (E220/E321/E323)	65
Operator panel	66
Light patterns	67
Status information light patterns	68
Obtaining information about printer service error codes	74
Service error codes	75
Power–on operations	89
Power–On Self Test (POST)	90
Symptom tables	90
Service checks	93
Cold fuser service check	94
Cooling fan service check (E320/E322)	95
Cooling fan service check (E220/E321/E323)	96
Controller card service check (E220/E321/E323)	97
Cover interlock switch service check (E320/E322)	99
Cover interlock switch service check (E220/E321/E323)	100
Dead machine service check	101
Engine board service check (E320/E322)	102
Fuser service check	104
Hot fuser service check	106
Low voltage power supply (LVPS) service check	106
Main motor service check	107
Operator panel button service check	108
Operator panel service check	109
Paper feed service checks	111
Parallel port service check	115
Print quality service checks	116
Transfer roll service check	129
Resetting user defaults (E320/E322)	130
Restoring factory defaults (E320/E322)	131
Restoring factory defaults (E220/E321/E323)	131
Using Hex Trace mode (E320/E322)	132
Using Hex Trace mode (E220/E321/E323)	132
Using print quality test pages (E320/E322)	133
Using print quality test pages (E220/E321/E323)	134
Using the special function menu (E320/E322)	135
Using the special function menu (E220/E321/E323)	136
3. Diagnostic aids	137
Diagnostic aids (320/E322)	137
Performing self test	137
Information priority	137
Printer operation modes	138
Printer modes summary table	139
Normal printing mode	142
Demo printing mode	143
Printing menu settings page	144
Diagnostic tests mode	145
Special function menu	147
Configuration mode	150
3. Diagnostic aids	171
Diagnostic aids (E220/E321/E323)	171
Operator panel	171
Configuration menu group or diagnostic menu group	172
Printer diagnostics mode	176
4. Repair information	179
Handling electrostatic discharge (ESD)- sensitive parts	179
Adjustment	180
Printhead assembly	180
Lubrication	181
Removal procedures	182
Cover removals	182
Auto sheet feed (ASF) assembly removal	183
Charge roll assembly removal	184
Controller card cage removal	185
Controller card removal	185
Cooling fan removal	186
D–roll removal	187
Engine board removal (E320/E322 only)	187
Fuser assembly removal	188
High voltage power supply (HVPS) removal	188
Low voltage power supply (LVPS) removal	189
Operator panel removal	189
Paper feed clutch solenoid removal	190
Printhead assembly removal	191
Transfer roll removal	191
5. Connector locations	193
LVPS–low voltage power supply board	193
HVPS–high voltage power supply board	194
Engine board (E320/E322 only)	194
RIP controller (E320/E322 only)	198
Controller (E220/E321/E323 only)	199
RIP controller (E220/E321/E323 only)	200
Option card (replaceable on E320/E322 only)	203
E220/E321/E323 wiring diagram	204
6. Preventive maintenance	205
7. Parts catalog	207
How to use this parts catalog	207
Assembly 1: Covers (E320/E322)	208
Assembly 2: Frame	214
Assembly 3: Fuser	216
Assembly 4: Main drive	218
Assembly 5: Paper feed	220
Assembly 6: Printhead	222
Assembly 7: Electronics	224
Assembly 8: Options	228
Assembly 9: Cables	232
Assembly 10: Miscellaneous	233
Index	235