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HP LaserJet 6p/mp Service Manual - Page 187

Material Safety Data Sheet MSDS 179, Paper Exit Sensor PS201 - ram installation

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Material Safety Data Sheet (MSDS) 179 maximum paper size 14 memory capacity 14 clearing 45 Enhanced I/O 59 error priority 120 errors, continuing from 40 errors, troubleshooting 121 incompatible cards, troubleshooting 121 installing 72 insufficient 39 operations 58 Page Protect 60 part numbers 145 ROM/RAM errors 123 standard 14 upgrading 145 memory door guide, removing 109 memory door, removing 76 Memory Enhancement technology (MEt) 59 Memory Expansion Cover locating 21 removing 72 messages persistent 122 printer status 121 priorities, error 120 service errors 123 microprocessor, formatter 58 minimum paper size 14 mirror, operations 62 model numbers 15 models, HP LaserJet 6L 14 monthly usage 14 motor control 56 locating 63 observing rotation 138 removing 110 rotation on power-on 116 troubleshooting 116 voltage 57 mylar sheet, positioning 77 N needlenose pliers 71 negative charging 62 noise level 18 numbers, model 15 numerical list, part numbers 172 O ohms, normal resistance 123 online support services 23 operating environment 32 operations DC Controller 55 formatter 58 image formation system 61 interface communications 58 overview 54 paper feed system 63 power system 56 timing stages 66 toner cartridges 61 EN ordering accessories and supplies 23, 145 consumables 144 documentation 22 parts 144 Output Bin, Paper capacity 14 feeding operations 63 locating 19 Output Slot, Front feeding operations 63 locating 19 Output Supports, Paper 19 outside covers. See covers overcurrent/overvoltage protection 57 overriding PS204 and SW101 138 ozone emissions 179 P page out 18 Page Protect 60 pages per minute 14 pages per month 14 pages, troubleshooting black 129 blank 130 blank spots 131 curled 130, 137 cut off 129 dirty 131 skewed 132 paper capacity 14 curl, troubleshooting 130, 137 sizes 14 specification guide, ordering 22 troubleshooting 137 Paper Exit Sensor (PS201) jam detection 65 locating 63 operations 63 Paper Exit Sensor flag removing 90 troubleshooting 122 paper feed frame reinstalling 100 removing 97 paper feed system 58, 63 Paper Guides 19 Paper Input Assembly, removing 77 Paper Input Bin capacity 14 operations 63 Paper Input Support 19 Paper Input Tray locating 19 paper jams detection 65 error priority 120 troubleshooting 121 paper out errors priority 120 troubleshooting 121 Paper Out flag, troubleshooting 122 Paper Out Sensor (PS202) jam detection 65 locating 63 operations 63, 64 185

Section	Page
Contents	7
Figures	11
Tables	13
Product information	15
Chapter contents	15
Printer features	16
Identification	17
HP LaserJet 6L Gold	17
Model and serial	17
Specifications	20
Product overview	21
Service approach	24
Parts Exchange Program	24
Ordering parts	24
Ordering related documentation	24
Contacting HP to place an order	24
Technical assistance	25
HPCustomer Care	25
HP worldwide sales and service offices	27
Warranty	30
Hardware service during the warranty period	30
Hardware service after the warranty period	30
HP LaserJet Toner Cartridge warranty	31
Voltage conversions	31
Site requirements	33
Chapter contents	33
Site requirements	34
Operating environment	34
Printer space requirements	35
The HP C3906A/F Toner Cartridge	36
Storage conditions	36
Storing opened toner cartridges	36
Toner cartridge handling suggestions	37
Operating overview	39
Chapter contents	39
Using the Control Panel	40
Control Panel layout	40
Indicator lights	40
The Control Panel Button	42
Printing a self-test page	43
Continuous self test	46
Printing an engine test	46
Resetting the printer	47
To reset the printer	47
Printer maintenance	49
Chapter contents	49
Life expectancy of consumables	50
Toner cartridge life	51
Saving toner with EconoMode	51
Refilled toner cartridges	52
Recycling toner cartridges	52
Cleaning the printer	53
Cleaning printer components	53
Cleaning spilled toner	54
Functional overview	55
Chapter contents	55
Basic printer functions	56
DC Controller/power system	57
Print engine control system	58
Power system (on DC Controller PCA)	58
Formatter system	60
CPU	60
Read only memory (ROM)	60
Random access memory (RAM)	60
Parallel interface	60
Control Panel	60
Resolution Enhancement technology (REt)	61
EconoMode	61
Memory Enhancement technology (MEt)	61
Enhanced I/O	61
Page Protect	62
PJL overview	62
Image formation system	63
Toner cartridge	63
Step 1: Drum cleaning	64
Step 2: Drum conditioning	64
Step 3: Image writing	64
Step 4: Image developing	64
Step 5: Image transferring	64
Step 6: Image fusing	64
Paper feed system	65
Paper jam detection	67
Basic sequence of operation	68
Removal and replacement	71
Chapter contents	71
Removal and replacement strategy	72
Required tools	73
Installing memory cards (DRAM)	74
Covers and doors	75
Back Cover	75
EP Door Assembly	77
Memory Door	78
Main Cover and Paper Input Assembly	79
Internal assemblies	80
Control Panel	80
Exit Roller Assembly	81
Delivery Assembly	82
Fuser Pressure Plate	84
Heating Element	86
Pressure Roller	89
Face-Up/Face-Down Lever	90
Fuser Exit Roller Assembly	91
Paper Exit Sensor Flag	92
Top assemblies	93
Laser/Scanner Assembly	93
Solenoid	94
Pickup Roller Assembly	96
Paper Feed Frame	99
Transfer Roller Guide and Transfer Roller	103
Kick Plate	104
Separation Pad	106
Subpads	107
Feed Assembly	108
Bottom assemblies	111
Memory Door Guide	111
Motor	112
DC Controller	113
Formatter PCA	116
Troubleshooting	117
Chapter contents	117
General troubleshooting flowchart	118
Paper path and components	120
DC Controller diagram	121
Printer error troubleshooting	122
Priority of errors	122
Printer status messages	123
Service and error messages	125
Image formation troubleshooting	128
Check the toner cartridge	128
Image defect examples	129
Troubleshooting checks	135
Engine test	135
Half self-test functional check	136
Drum rotation functional check	136
High-voltage power supply check	137
Paper curl	139
Troubleshooting tools	140
Paper path check	140
Repetitive image defect ruler	141
Main wiring diagram	142
Parts and diagrams	145
Chapter contents	145
How to use the part lists and diagrams	146
Ordering parts	146
Ordering consumables	146
Accessories and supplies	147
Common hardware	148
Parts diagrams	149
Parts index	169
Alphabetical parts list	169
Numerical parts list	174
Regulatory information	179
Laser Safety (U.S.)	179
Laser Statement (Finland)	180
Toner safety	181
Ozone emission	181
FCC Statement (Class B)	182
VCCI Statement (Japan)	182

Match case Limit results 1 per page

185

Material Safety Data Sheet (MSDS) 179

maximum paper size 14

memory

capacity 14

clearing 45

Enhanced I/O 59

error priority 120

errors, continuing from 40

errors, troubleshooting 121

incompatible cards, troubleshooting 121

installing 72

insufficient 39

operations 58

Page Protect 60

part numbers 145

ROM/RAM errors 123

standard 14

upgrading 145

memory door guide, removing 109

memory door, removing 76

Memory Enhancement technology (MEt) 59

Memory Expansion Cover

locating 21

removing 72

messages

persistent 122

printer status 121

priorities, error 120

service errors 123

microprocessor, formatter 58

minimum paper size 14

mirror, operations 62

model numbers 15

models, HP LaserJet 6L 14

monthly usage 14

motor

control 56

locating 63

observing rotation 138

removing 110

rotation on power-on 116

troubleshooting 116

voltage 57

mylar sheet, positioning 77

needlenose pliers 71

negative charging 62

noise level 18

numbers, model 15

numerical list, part numbers 172

ohms, normal resistance 123

online support services 23

operating environment 32

operations

DC Controller 55

formatter 58

image formation system 61

interface communications 58

overview 54

paper feed system 63

power system 56

timing stages 66

toner cartridges 61

ordering

accessories and supplies 23, 145

consumables 144

documentation 22

parts 144

Output Bin, Paper

capacity 14

feeding operations 63

locating 19

Output Slot, Front

feeding operations 63

locating 19

Output Supports, Paper 19

outside covers.

See

covers

overcurrent/overvoltage protection 57

overriding PS204 and SW101 138

ozone emissions 179

page out 18

Page Protect 60

pages per minute 14

pages per month 14

pages, troubleshooting

black 129

blank 130

blank spots 131

curled 130, 137

cut off 129

dirty 131

skewed 132

paper

capacity 14

curl, troubleshooting 130, 137

sizes 14

specification guide, ordering 22

troubleshooting 137

Paper Exit Sensor (PS201)

jam detection 65

locating 63

operations 63

Paper Exit Sensor flag

removing 90

troubleshooting 122

paper feed frame

reinstalling 100

removing 97

paper feed system 58, 63

Paper Guides 19

Paper Input Assembly, removing 77

Paper Input Bin

capacity 14

operations 63

Paper Input Support 19

Paper Input Tray

locating 19

paper jams

detection 65

error priority 120

troubleshooting 121

paper out errors

priority 120

troubleshooting 121

Paper Out flag, troubleshooting 122

Paper Out Sensor (PS202)

jam detection 65

locating 63

operations 63, 64