2-2
EO18-33003A
2. MAJOR UNIT REPLACEMENT
2.1 REPLACING THE CPU PC BOARD
5) Remove the five PT-3x10 screws, the two SMW-3x6 screws and the ground wire to detach the CPU
PC board.
6) Replace the CPU PC board with a new one, and then reassemble in the reverse order of removal.
Fig. 2-3
CPU PC Board
SMW-3x6 Screw
PT-3x10 Screw
SMW-3x6 Screw
PT-3x10 Screw
Ground Wire
CPU PC Board
PT-3x10 Screw
Fig. 2-2
4) Disconnect the nine harnesses from CN3 to CN5, CN9, CN12, CN13, CN14, CN20 and CN21 on the
CPU PC board.
CN13
CN20
CN12
CN9
CN5
CN4
CN3
CN21
CPU PC Board
CN14
Содержание B-450 SERIES
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