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4. Press the [LOG/TUNE] key. “TUNE” appears on the LCD. “TUNING: OK” appears when
tuning is completed. Record the status (on or off) of LEDs CR1 – CR22 (on the
COUPLER Board).
5. Set S1 switch to MANUAL.
6. Set S4, S5, S6 DIP switches so that LEDs become the status is the same as in step 4.
The relations between the DIP switch and LED are shown on the next page. When a DIP
switch is turned on, the appropriate LED lights.
DIP switch LED No. LED status
#8 CR1
#7 CR2
#6 CR3
#5 CR4
#4 CR5
#3 CR6
#2 CR7
S4
#1 CR8
#8 CR9
#7 CR10
#6 CR11
#5 CR12
#4 CR13
#3 CR14
#2 CR15
S5
#1 CR16
#8 CR17
#7 CR18
#6 CR19
#5 CR20
#4 CR21
S6
#3 CR22
7. Return the S1 switch to AUTO, confirming that LEDs do not change. If different, repeat
step 6.
8. Set the S1 switch to MANUAL.
9. Making sure it is not silent time, communicate with the handset. Confirm that IA changes
with voice level.
10. Set the S1 switch to AUTO. Close the cover of the antenna coupler.