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HP LaserJet 6L User Manual Page 9
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HP LaserJet 5L and 6L Printer
1
Service Manual
1
HP LaserJet 5L HP LaserJet 6L
2
(C3941A) (C3990A)
2
Conventions
4
Chapter Descriptions
5
List of Figures
6
List of Tables
8
Product Information
10
1-2 Product Information
11
Printer Features
12
Identification
13
Product Information 1-5
14
Specifications
15
Product Overview
16
1-8 Product Information
17
19. Parallel Cable Connector
18
• Parts Direct Ordering (PDO)
19
• Parts Center Europe (PCE)
19
Product Information 1-11
20
Technical Assistance
21
Worldwide Support
22
Warranty
23
Warranty Limitations
24
Voltage Conversions
24
1-16 Product Information
25
Site Requirements
26
2 -2 Site Requirements
27
Printer Space Requirements
29
Storage Conditions
30
Toner Cartridge Distribution
31
Figure 2-2
31
Operating Overview
32
3-2 Operating Overview
33
Using the Control Panel
34
LED Lights
35
Operating Overview 3-5
36
The Front Panel Button
37
Printing a Self-Test Page
38
Figure 3-2
39
Continuous Self Test
40
Printing an Engine Test
41
Resetting the Printer
42
3-12 Operating Overview
43
Printer Maintenance
44
4-2 Printer Maintenance
45
Printer Maintenance 4-3
46
Toner Cartridge Life
47
Refilled Toner Cartridges
48
Recycling Toner Cartridges
48
Cleaning the Printer
49
Cleaning Printer Components
50
Cleaning Spilled Toner
51
Functional Overview
52
5 - 2 Functional Overview
53
Basic Printer Functions
54
DC Controller/Power System
55
Print Engine Control System
56
AC Power Distribution
57
DC Power Distribution
57
SleepMode
57
• A job is received
58
• Storing font information
59
Control Panel
60
Resolution Enhancement (REt)
60
EconoMode
61
Enhanced I/O
62
Page Protect
62
PJL Overview
62
Image Formation System
63
Toner Cartridge
64
Step 1: Drum Cleaning
64
Step 2: Drum Conditioning
64
Step 3: Image Writing
64
Step 4: Image Developing
65
Step 5: Image Transferring
65
Step 6: Image Fusing
65
Paper Feed System
66
5 - 16 Functional Overview
67
Functional Overview 5 - 17
68
Paper Jam Detection
69
Basic Sequence of Operation
70
5 - 20 Functional Overview
71
Functional Overview 5 - 21
72
5 - 22 Functional Overview
73
Removal and Replacement
74
6 - 2 Removal and Replacement
75
WARNING!
76
• 5.5 mm hexhead nutdriver
77
• small flathead screwdriver
77
• needlenose pliers
77
2 Remove the toner cartridge
79
2 Open the EP door
81
3 Remove the toner cartridge
81
Figure 6-6
83
4 Lift the Control Panel out
84
1 Remove Printer Covers
85
4 Lift the roller out
85
Delivery Assembly
86
Figure 6-10
87
Fuser Pressure Plate
88
To reinstall:
89
Heating Element
90
Figure 6-14
91
Pressure Roller
93
Face-Up/Face-Down Lever
94
Fuser Exit Roller Assembly
95
Paper Exit Sensor Flag
96
6 Lift the Solenoid off
99
1 Remove the Printer Covers
100
5 Lift the bushing out
101
To reinstall
102
Paper Feed Frame
103
Replacement
104
Figure 6-27
104
Removal and
104
6-28, callout 1)
105
Kick Plate
108
Separation Pad
110
Subpad Removal
111
Figure 6-34
111
Feed Assembly
112
5 Remove the Feed Assembly
113
2 Remove any extra memory
115
Motor Removal
116
Figure 6-39
116
DC Controller
117
ESD SENSITIVE!
118
Figure 6-42
119
Formatter PCA
120
Troubleshooting
122
7-2 Troubleshooting
123
Paper Path and Components
126
DC Controller Diagram
127
Printer Error Troubleshooting
128
Printer Status Messages
129
Table 7-3 Unclearable Error
130
Service and Error Messages
131
Troubleshooting 7-11
132
7-12 Troubleshooting
133
Check the Toner Cartridge
134
Image Defect Examples
135
Troubleshooting Checks
142
• Charging (1)
145
• Drum Ground (2)
145
• Developing Roller (3)
145
Paper Curl
147
Troubleshooting Tools
148
Repetitive Image Defect Ruler
149
Main Wiring Diagram
150
7-30 Troubleshooting
151
Troubleshooting 7-31
152
7-32 Troubleshooting
153
Parts and Diagrams
154
8-2 Parts and Diagrams
155
Ordering Parts
156
Ordering Consumables
157
Accessories and Supplies
158
Common Hardware
159
Parts and Diagrams 8-7
160
8-8 Parts and Diagrams
161
Parts and Diagrams 8-9
162
8-10 Parts and Diagrams
163
Parts and Diagrams 8-11
164
8-12 Parts and Diagrams
165
Parts and Diagrams 8-13
166
8-14 Parts and Diagrams
167
Parts and Diagrams 8-15
168
8-16 Parts and Diagrams
169
Parts and Diagrams 8-17
170
8-18 Parts and Diagrams
171
Parts and Diagrams 8-19
172
8-20 Parts and Diagrams
173
Parts and Diagrams 8-21
174
8-22 Parts and Diagrams
175
Parts and Diagrams 8-23
176
8-24 Parts and Diagrams
177
Parts and Diagrams 8-25
178
8-26 Parts and Diagrams
179
Parts Index
180
Parts Index A-3
182
A-4 Parts Index
183
Parts Index A-5
184
A-6 Parts Index
185
Parts Index A-7
186
A-8 Parts Index
187
Parts Index A-9
188
A-10 Parts Index
189
Parts Index A-11
190
A-12 Parts Index
191
Regulatory Information
192
Laser Statement (Finland)
193
Toner Safety
194
Ozone Emission
194
VCCI Statement (Japan)
195
FCC Statement (Class B)
195
Service Notes
196
C-2 Service Notes
197
SERVICE NOTE
198
C-4 Service Notes
199
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