Icom IC-R8500 Instruction Manual

Also see for iC- r8500: Service manual Instruction manual Service manual Service manual addendum Service manual

n Disassemblyn Fuse replacementIf a fuse blows or the receiver stops functioning, try tofind the source of the problem, and replace the dam-aged fuse with a new, rated fuse.n Level adjustments3 A FGB• For DC cable fuse • For internal fuse3711 MAINTENANCEn Memory backupAll of the CPU’s memory is backed up by an EEP-ROM (Electronically-Erasable Programmable Read-Only Memory). All data you set, such as memory con-tents, set mode contents, etc. is stored in this EEP-ROM. There is no internal lithium battery.n CPU resettingIf the IC-R8500 is behaving erratically, this may be anindication of a CPU malfunction. In such cases, resetthe CPU.While pushing [MW], push [POWER] in to turn on thereceiver power.• The CPU is reset.NOTE: Resetting the CPU clears all memory con-tents and returns internal settings to their factorydefaults.n CleaningIf the receiver becomes dusty or dirty, wipe it cleanwith a dry, soft cloth.AVOID the use of strong chemical solvents such asthinner, benzine or alcohol to clean thereceiver. These may damage the receiver’ssurfaces.For internal maintenance and optional installations,disassemble the receiver.À Remove 6 screws from the top of the receiver and4 screws from its sides.Á Carefully lift up the top cover while disconnectingthe plug from the speaker cable.Â Turn the receiver upside down.Ã Remove 6 screws from the bottom cover, then liftup the bottom cover.SpeakercableMAIN unitFuse(FGMB 125 V 3 A)CAUTION: DISCONNECT the DC power cableor AC adapter before performing any work on thereceiver.R254 R252R252 adjusts the beep levelR254 adjusts the UT-102 output level