Table of Contents
C12 Rev.4 ix
3. Covers 88
3.1 Arm #1 Center Cover ...........................................................................90
3.2 Arm #1 Side Cover ...............................................................................91
3.3 Arm #2 Side Cover ...............................................................................92
3.4 Arm #3 Cover .......................................................................................92
3.5 Arm #3 Maintenance Cover .................................................................93
3.6 Arm #4 Side Cover ...............................................................................94
3.7 Arm #4 Maintenance Cover .................................................................96
3.8 Arm #4 D-sub Attachment ....................................................................97
3.9 Base Cover .............................................................................................98
3.9.1 M/C Cable Backward ................................................................98
3.9.2 M/C Cable Downward ..............................................................99
3.10 Base Maintenance Cover ................................................................ 101
3.11 Connector Plate ............................................................................... 102
3.11.1 M/C Cable Backward ........................................................... 102
3.11.2 M/C Cable Downward .......................................................... 104
3.12 Connector Sub Plate ....................................................................... 105
4. Cable Unit 106
4.1 Replacing the Cable Unit .................................................................. 106
4.1.1 Replacing the Cable Unit (M/C Cable Backward) ................. 108
4.1.2 Replacing the Cable Unit (M/C Cable Downward) ................ 136
4.2 Connector Pin Assignment ................................................................ 141
4.2.1 Signal Cable .......................................................................... 141
4.2.2 Power Cable .......................................................................... 144
4.2.3 User Cable ............................................................................. 146
4.2.4 Color of Cables ...................................................................... 146
5. Joint #1 147
5.1 M/C Cable Backward (Joint #1) ........................................................ 148
5.1.1 Joint #1 - Replacing the Motor (M/C Cable Backward) ......... 148
5.1.2 Joint #1 - Replacing the Reduction Gear Unit
(M/C Cable Backward) ........................................................... 156
5.1.3 Joint #1 - Replacing the Timing Belt (M/C Cable Backward) 163
5.1.4 Joint #1 - Replacing the Electromagnetic Brake
(M/C Cable Backward) ........................................................... 170
5.2 M/C Cable Downward (Joint #1) ....................................................... 172
5.2.1 Joint #1 - Replacing the Motor (M/C Cable Downward) ....... 172
5.2.2 Joint #1 - Replacing the Reduction Gear Unit
(M/C Cable Downward) .......................................................... 176
5.2.3 Joint #1 - Replacing the Timing Belt (M/C Cable Downward) 179
5.2.4 Joint #1 - Replacing the Electromagnetic Brake
(M/C Cable Downward) .......................................................... 184