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Specifications
Intro
Dates -
2
Intro Dates
SC and NT
July 1990
LS
March 1991
LS/L and NTR
March 1992
1
2
...
18
19
20
21
22
23
24
25
26
27
28
...
217
218
PLW SC/NT/NTR/LS
1
Product Information
3
Paper Paths
4
LS–LS/L Identification
5
Sensing System
6
PLW SC/NT/NTR/LS Basics - 6
8
PLW SC/NT/NTR/LS Basics - 7
9
PLW SC/NT/NTR/LS Basics - 8
10
PLW SC/NT/NTR/LS Basics - 9
11
PLW SC/NT/NTR/LS Basics - 10
12
PLW SC/NT/NTR/LS Basics - 11
13
Startup Test Pages
14
PLW SC/NT/NTR/LS Basics - 13
15
SC Startup Test Page
16
Service Test Page
17
SC, NT, NTR
18
Specifications
21
Intro Dates
23
Logic Board
24
Performance
26
Built-In Fonts
28
Environmental
29
Electrical
30
Physical
31
Troubleshooting
32
Status Panel LEDs
33
Capacitor Discharge
35
Capacitor C212
37
(C209 on LS/L)
37
LS Error Messages
38
Roller Diameters
39
Drum Check
41
Flowcharts
42
Personal LaserWriter SC/NT
43
Wiring Diagram
43
Personal LaserWriter LS
44
Wiring Diagram
44
Take Apart
45
Top Cover
46
Front Cover
48
Front Door
50
Right Holding Notch
50
LED Cover
51
LED Cable
53
Cassette Feeder
54
Cassette
55
Pedestal Covers
56
Cassette Stop Cover
57
Right Bottom Cover
58
Microswitches
58
Left Bottom Cover
59
Roller Shaft
60
Cassette Pickup
64
Pickup Clutch Assembly
65
Setscrew E-Ring
65
Cassette Feeder Tray
71
Cassette Feeder Board
71
I/O Board (SC
72
NT, NTR)
72
I/O Board
73
I/O Shield
73
I/O Shield (SC
75
End Plate (SC
77
End Plate
78
I/O Shield (LS)
79
I/O Board (LS)
81
End Plate (LS)
83
PCB Shield
85
Duct Plate
86
Serial Controller
88
Take Apart Fan - 51
96
This topic applies to all
96
Before you begin, remove
96
Sensor Mounting
99
Density-Adjusting
101
Connector J213
102
Density-Adjusting Board
102
Connector
102
Fan-and-Sensor
103
Interconnect Board
106
DC Controller
108
±Warning: Never
109
Interconnect Mount
111
Retainer
111
DC Controller Board
111
Mount Plate
112
Mounting Plate
116
Cable Retainers
116
Power Supply
117
(SC, NT, NTR)
117
Cable Retainer
118
Power Supply (LS)
120
Power Supply (LS/
123
Serial Controller Board
124
High-Voltage
126
High-Voltage Power Supply
127
Cable Connector
127
Laser Assembly
129
Main Motor
131
Lens and Scanner
133
Assemblies
133
±Warning: Always replace
134
Beam Detect
135
Mirror Screw
135
Focusing Lens
135
Lens Assembly
135
Drive Assemblies
137
Grounding
138
Cable Clamp
139
Drive Assembly
139
5 Remove the three
140
Feeder Assembly
141
Access Panel
142
Sensor Connector
143
White Gear
144
Fuser Assembly
145
Face-Down
146
Delivery
146
Assembly
146
Fuser Heater Bulb
148
1 Remove the gold-colored
149
Left Connector Bracket
150
Retaining Spring
152
7 Remove the two black
153
Fuser Bulb
154
Left Connector
154
Fuser PCB
155
Rod Assembly
157
1 Remove the screw that
158
Contact Assy
160
Contact Assembly
162
Power Supply Cable
162
Mounting
162
Face-Up Delivery
163
2 Lift out the face-up
165
Face-Up Cover
166
Tension Spring
167
1 Swing the face-down
170
Face-Down Delivery Assembly
171
Separation Pad
172
Transfer Guide
174
Transfer Roller
176
Transfer Roller Mount
177
Pickup Roller
178
1 Remove the three black
179
Front Access Door
180
8 Remove the screw that
184
9 Disconnect connector
185
J101 from the power
185
Plastic Pin
186
Multipurpose
187
Cable Assembly
187
Pickup Drive Gear
189
Grounding Cable
190
Solenoid Screw
190
Sensing Lever
196
Paper-Sensing Arm
197
Paper-Sensing
197
Upgrades
198
NTR ROM
199
Additional Procedures
201
Voltage
202
Conversions
202
Nip Width Measurement
204
Cleaning Page
207
Adjustments
210
Registration
211
Adjustment
211
Leading Edge of Paper
213
Test Page Pattern
213
Refurbishment Kit
215
Exploded View
216
Exploded View 1
217
Exploded View 2
218
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