Icom UT-109 Installation Instructions Manual page 4

M Model: IC-F3/IC-F3S
B4929E; Remove the LCD side jumper chip and the CPU side jumper chip q.
PC board number
B4929F; Remove the CPU side jumper chips q and w.
• LCD side: B4929E only.
DET
Remove the resister
from the board.
M Model: IC-F4/IC-F4S
B4923G; Remove the LCD side jumper chip and the CPU side jumper chip q.
PC board number
B4923H; Remove the CPU side jumper chips q and w.
• LCD side: B4923G only.
AF
Remove the resister
from the board.
IC-F3/F4 SERIES MODIFICATION POINTS
• CPU side
• CPU side
- 4 -
w
Jumper
q
chips
Service window
w
Jumper chips
q
B4923H or G
Service window