xiv IBM 4685-K03 Installation, Operation and Maintenance Guide
DAILY CARE............................................................................................................................................................................12
CHAPTER 4 “REPLACING THE KEYS”............................................................................................................................. 15
REPLACING A SINGLE KEY................................................................................................................................................ 15
REMOVAL....................................................................................................................................................................................15
ATTACHING.................................................................................................................................................................................16
REPLACING A DOUBLE KEY.............................................................................................................................................. 17
REMOVAL....................................................................................................................................................................................17
ATTACHING.................................................................................................................................................................................18
REPLACING A QUADRUPLE KEY......................................................................................................................................19
REMOVAL....................................................................................................................................................................................19
ATTACHING.................................................................................................................................................................................19
CHAPTER 5 “MAINTENANCE OF THE KEYBOARD”..................................................................................................... 21
IF PROBLEMS OCCUR......................................................................................................................................................... 21
DIAGNOSTIC TESTS............................................................................................................................................................. 22
SELF-DIAGNOSTIC TESTS............................................................................................................................................................22
REMOVING AND REPLACING PARTS...............................................................................................................................24
REPLACING THE REAR COVER....................................................................................................................................................24
REPLACING THE CONTROL CARD............................................................................................................................................... 25
REPLACING THE MSR................................................................................................................................................................25
REPLACING THE MODE KEY........................................................................................................................................................27
REPLACING THE SPEAKER..........................................................................................................................................................27
REPLACING THE TOP COVER ASSEMBLY.....................................................................................................................................27
BILL OF MATERIAL............................................................................................................................................................... 28
ASSEMBLY: KEYBOARD..............................................................................................................................................................28
APPENDIX A. ACCESSORY UNIT....................................................................................................................................... 31
ACCESSORY UNITS.....................................................................................................................................................................31
APPENDIX B. PRODUCT SPECIFICATIONS.....................................................................................................................33
DIMENSIONS............................................................................................................................................................................... 33
CONSUMPTION CURRENT........................................................................................................................................................... 33
ENVIRONMENT CONDITION..........................................................................................................................................................33
MSR READABLE CARDS.....................................................................................................................................................33