Electrical Components
SM 4-149 D146/D147/D148/D149/D150
and Adjustment
NVRAMs on the controller board
§ Referring to the following procedure, be sure that there are no mistakes in the mounting
position and orientation of the NVRAMs.
§ SC195 (Machine serial number error) will be displayed if you forget to attach the NVRAM.
§ If you mounted the NVRAM in the wrong direction, each component needs to be replaced
because a short circuit was caused in the controller board and the NVRAM.
Correspondence table
Position
Label on the
board
Label on the NVRAM
[A] Upper FRAM2 2M-2
[B] Lower FRAM1 2M-1
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