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Apple LC 550 Specifications Page 68
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Take Apart
Hard
Drive -
31
1
Push down the latch and
remove the hard drive.
Hard Drive
Latch
1
2
...
63
64
65
66
67
68
69
70
71
72
73
...
173
174
Macintosh LC 520/550/575
1
Service Source
2
Macintosh LC 520, 550, 575
2
Product Information
4
Compatibility Notes
5
Disk Storage
10
I/O Interfaces
11
Communications
12
Slot (LC 575)
12
I/O Devices
13
Sound and Video
14
Electrical
15
Environmental
17
Troubleshooting
18
Symptom Charts
20
Floppy Drive
26
Hard Drive
29
CD-ROM Drive
30
Peripheral
31
Miscellaneous
34
Take Apart
37
Rear Housing
38
Take Apart Fan - 5
42
Push out the two latches and
42
Analog Board
43
Take Apart Analog Board - 8
45
2 Disconnect the internal
45
Retainer
46
I/O Door
49
Take Apart Logic Board - 15
52
Pull out the logic board
52
Drive Bezel
53
Take Apart Floppy Drive - 20
57
Push down the latch and pull
57
Macintosh LC 520
58
Auto-inject Floppy
58
Auto-inject
59
Drive Carrier
59
CD Connector
64
CD Audio Adapter
64
Adapter
64
Take Apart Hard Drive - 31
68
1 Push down the latch and
68
Chassis Harness
71
Assembly
71
±Warning: Never use a
72
Background
73
922-0557
75
922-0117 Screw
76
EMI Shields
77
Speaker Assembly
78
Speaker Wires
79
Front Panel Control Board
81
Logic Board Connector
87
±Warning: This product
92
Take Apart CRT - 56
93
2 Lift off the CRT
93
Replacement Note: Be sure
93
Internal
94
Microphone
94
Front Bezel
96
Upgrades
98
Macintosh
99
Processor Upgrade
99
Installation Procedure
105
Overview
105
Remove the 68LC040
107
Processor from the
107
Logic Board
107
Removal Tool
108
Logic Board Socket
108
Processor
108
Install the 68LC040
110
Processor on the
110
Upgrade Board
110
Processor
111
Prepare the Upgrade
114
Installation
114
Antistatic Foam
115
Bottom Side
115
EMI Clips
115
Hook-and-Loop
117
Fastener
117
Logic Board and
122
Additional Procedures
123
Negative
125
Positive
125
Battery
131
Replacement, LC
131
Connector
132
Geometry
134
Vertical Center
136
Horizontal Center
137
Vertical Size
138
Horizontal Size
139
WARNING:
141
High Voltage Areas
141
Gray Bars
144
Contrast Up Button
144
Convergence
155
Crosshatch I
156
Geometric
158
Distortion
158
Horizontal Bow
160
Pin Phase
160
Vertical Angle
160
Yoke Clamp
163
Plastic Yoke Collar
163
Light Meter Setup
169
Model 246
171
Exploded View
173
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