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K Service Source PowerBook 1400 PowerBook 1400c/117, /133, /166, PowerBook 1400cs/117, /133, /166 K Service Source Hot Issues PowerBook 1400 Series Hot Issues Overview - 1 Overview This chapter is designed to highlight unique or high- priority product issues that you should be aware of before servicing the PowerBook 1400. This chapter alerts you to important issues and provides links to other areas in the manual where more complete information can be found. This chapter is not intended to replace other parts of this manual; it merely provides a pointer to pertinent information in those chapters. The date the Hot Issue was published is indicated in parentheses after the title. Hot Issues Bottom Case Latch Replacement (2/98) - 2 Bottom Case Latch Replacement (2/98) Issue: The latches on the bottom case battery and media bays may come off. The latches are replaceable. Please replace the latches for customers rather than replacing the entire Bottom Case Assembly. Parts Identification: Order Replacement Part 922-3304: Latch, Bottom Case, PB 1400. The latches come in a package of five. Replacement Procedure: For detailed instructions, see "Bottom Case Latch Replacement" in the Additional Procedures chapter of this manual. Hot Issues Logic Board Identification (2/98) - 3 Logic Board Identification (2/98) Issue: There are two logic boards with ROM version 3 that could be used in the PowerBook 1400, 117MHz and the PowerBook 1400, 133 MHz units. Because dealers must return the same part they ordered to receive reimbursement, it is important to properly identify the logic board before ordering a replacement. Part Number 661-1188 has ROM U3 (Low, 341S0203) and ROM U4 (High, 341S0204). It works in PowerBook 1400, 117 MHz and 133 MHz units. Part number 661-1381 has ROM U3 (Low, 341S0364) and ROM U4 (High, 341S0365). It works in PowerBook 1400, 117 MHz, 133 MHz, and 166 MHz units. You may receive a 661-1381 logic board as a replacement for a 661-1188 if that is the board currently in service Hot Issues Logic Board Identification (2/98) - 4 stock. Since it will work in all the PowerBook 1400 units, this should not pose a problem to customers or Service Providers. Parts Identification: To check the ROMs on the PowerBook 1400, 117 MHz units, remove the factory-installed