Icom IC-R9000L [66/72] Caution

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11 MAINTENANCE 11 6 CPU RESETTING The LCD monitor may occasionally information e g when first applying po caused externally by static electricity or ot If this problem should occur turn OFF seconds and turn ON again If the p check the internal CPU and RAM IC ch check screen 1 LOGIC CHECK SCREEN The logic check screen tests a main CPU RAM IC chips for correct functioning 1 Turn OFF the POWER switch 2 Push and hold the SPEECH sw POWER switch ON Then release th The logic check screen appears ap power is ON 3 When the screen shows Passed to al F 6 MENU The menu 1 screen is displayed 4 If another comment is displayed on the F 1 RESET CAUTION When pushing F 1 RE memory information is erased The receiver checks the following items o screen INDICATOR RAM MAIN 2 DIRECT CPU RESETTING DESCRIP 8 kbytes RAM for MAIN V RAM 128 k bytes V RAM for SUB CONTROL Control line between M SUB CPU SUB DATA Data transferring betwe and SUB CPU SUB INTERRUPT Interrupt data line to SU Meh No Indicating memory chan DATA The decimal and width channels The internal CPU can be reset without check screen Use direct CPU resetting erase all memory channels 1 Turn POWER OFF 2 Push and hold the CLEAR switch th ON 3 The CPU is now reset and the menu 1 63

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