12-712MAINTENANCE■ UT-122 installation The optional UT-122 DIGITAL UNIT provides P25 (digital)mode operation.WARNING: DISCONNECT the AC power cablefrom the AC outlet before removing the receiver’scover.q Remove the top cover and inside cover as shownat left page.w Connect the UT-122 as shown left.• Remove the protective paper from the UT-122 in ad-vance.e Return the inside cover and top cover and screwsto the original position.■ Clock backup battery replacementThe IC-R9500 has a lithium backup battery (CR2032)inside for clock and timer functions. The usual life ofthe backup battery is approximately 2 years.When the backup battery is drained, the receiver re-ceives normally but cannot retain the current time.WARNING: DISCONNECT the AC power cablefrom the AC outlet before removing the receiver’scover.q Remove the top cover as shown at left page.w Replace the clock backup battery, located on thefront panel as illustrated at left.• Make sure the battery polarity is correct.e Return the top cover to the original position.r Set the date and time in time set mode. (p. 10-2)
