Maintenance; Саштом; Malfunctions - Icom IC-03AT Instruction Manual

6-1 CAUTIONS
Avoid the use of strong cleaning
agents such as benzine or alcohol
as they may damage the surfaces.
6-2 MALFUNCTIONS
(1) UNLOCKED PLL
"U" appears
DO NOT disassemble the trans- DO NOT use any chargers other
ceiver as it may cause trouble. _ than the suggested ones.
If a small "U" appears on the FREQUENCY DISPLAY as shown at
the left, the PLL (Phase-Locked Loop) circuit in the transceiver is
unlocked. .
At this time, the transceiver is muted and no signals are transmitted.
This unlocked condition may be caused by an exhausted battery
pack, so check your battery pack first.
га бс