JCM Part No . 960 - 000076R _ Rev . 1 © 2007, JCM - American Corporation 4 - 4 Section 4 World Bill Acceptor (WBA® - 1x/2x - SS & SS2) Disassembly/Reassembly 2 . Remove the two (2) screws securing the CPU Circuit Board Assembly on each side of the housing ( See Figure 4 - 12 a), and remove the single (1) screw securing the Val - idator Catch Bar to remove its beam ( See Figure 4 - 12 b) . 3 . Pull the CPU Circuit Board out of the Trans - port Assembly as indicated by the large arrow in Figure 4 - 12 . Perform the following steps to remove the WBA12/13 Transport Unit CPU Board Assembly: 4 . Disconnect the seven (7) Harness Connec - tors from the Transport’s CPU Circuit Board ( See Figure 4 - 13) . 5 . Remove the two (2) screws securing the CPU Circuit Board Assembly on each side of the housing ( See Figure 4 - 14 a), and remove the single (1) screw securing the Val - idator Catch Bar to remove its beam ( See Figure 4 - 14 b) . 6 . Pull the CPU Circuit Board out of the Trans - port Assembly as indicated by the large arrow in Figure 4 - 14 . 7 . Remove the single (1) CPU Circuit Board mounting screw (See Figure 4 - 15 a) and disconnect the harness plug leading to the underside of the board ( See Figure 4 - 15 b) . Stacker Encoder Sensor Board Removal Perform the following steps to remove the WBA Transport’s Encoder Sensor Board: 1 . Remove the single (1) Encoder Sensor Board mounting screw and pull the encoder sensor board out of the assembly ( See Figure 4 - 16 a) . 2 . Disconnect the harness plug from the Stack Encoder Sensor Board and remove it from the assembly ( See Figure 4 - 16 b) . Figure 4 - 12 WBA Transport CPU Board Assembly Removal a) a) b) Figure 4 - 13 WBA 12/13 CPU Board Disconnect Figure 4 - 14 WBA Transport CPU Board Assembly Removal a) a) b) Figure 4 - 15 Transport CPU Board Removal b) a)