TH-D72A/D72E
44
ADJUSTMENT
Common Section
Item
Condition
Measurement
Adjustment
Specifi cations / Remarks
Test-
equipment
Unit
Terminal
Unit
Parts
Method
1. Setting and
Resetting
1) External power supply con-
nection DC-IN terminal volt-
age: 13.8V
2) Total illumination display
confi rmation
Turn the power switch on
while pressing the [F] key
3) Full-resetting and install value
setting
Release [F] key.
Select the Full-reset mode by
turning the tuning control or
press [
S
]/[
T
].
If you select [ESC
W
], the
transceiver exits the reset
mode.
Note:
When you do not want to remove data such as memory
channel data, save the data using the MCP-4A (Memory
control program) before performing the full reset, then
write the data to the transceiver after performing the
adjustment.
2. VCO Lock
Voltage
•
A-Band
1) Frequency: 410.0MHz
Digital
voltmeter
TX-RX
(C/3)
CV_A
Check
0.6V or more
2) Frequency: 173.995MHz
4.9V or less
• B-Band
3) Frequency: 136MHz
CV_B
0.6V or more
4) Frequency: 128.995MHz
4.9V or less
5) Frequency: 129MHz
0.6V or more
6) Frequency: 173.995MHz
4.9V or less
7) Frequency: 320.0MHz
0.6V or more
8) Frequency: 455.995MHz
4.9V or less
9) Frequency: 365.0MHz
0.6V or more
10) Frequency: 523.995MHz
4.9V or less
3. LCD Con-
trast
Switch to Service Setup mode
and carry out the operations for
item A.
1) Ta=+25°C
Digital
voltmeter
TX-RX
(A/3)
CN769
Tuning
control
[
X
]
Write
–7.0V±0.05V
4. Battery Volt-
age Align/
Check
Switch to Service Setup mode
and carry out the operations for
item B.
1) Battery terminal: 5.8V
DC power
supply
Battery
terminal
[
X
]
Write
5. 2nd Local
Switch to Service Setup mode
and carry out the operations for
item C.
f. counter
Spectrum
analyzer
TX-RX
(C/3)
LO2_A
Tuning
control
[
X
]
Write
50.4MHz±50Hz
6. RTC Fre-
quency
Adjust
Switch to Service Setup mode
and carry out the operations for
item D.
f. counter
TX-RX
(A/3)
CN714
[
X
]
Write
RTC table
Refer to page 41.
Internal value setting display
after all resetting
Example: Etype
LCD total illumination display