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Text excerpt from page 17 (click to view)
6551-T3N/6551-U3N
2-3. A BOARD REMOVAL
CN306
5
CN308 CN311 CN303 CN309
A board
4
Three screws (+BVTT 3 x 8)
CN305
1
Screw (+BVTT 4 x 8) Cable stopper
2
3
Two screws
6
2-4. REAR SHIELD COMPLETE ASSY, D BOARD REMOVAL
Refering to 2-3, disconnect five connectors (CN303, CN305, CN306, CN309 and CN311).
N board
Screw (+P 3.5 x 20)
5
CN904
Three screws (+BVTP 3 x 8) D board
7
CN601 CN600
A
CN303
4
Rear shield complete assembly
A
2
Screw (+BVTT 4 x 8)
3
Widening the chassis toward the direction A , disengage two claws.