Icom IC-7000, Service Manual, Page: 18 / 92

4-3 DISPLAY ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
ADJUSTMENT
UNIT LOCATION UNIT ADJUST
DISPLAY 1 • Connect between DISPLAY unit
ground and MAIN unit ground.
• Disconnect J2231 (MAIN unit).
• Receiving
DIS-
PLAY
Connect a frequency
c o u n t e r t o C P 5 3 6
t h r o u g h a c a p a c i t o r
(0.0047 µF) and resistor
(1 k
Ω
) in series.
3.579545 MHz
[USA]
4.433619 MHz
[Others]
DIS-
PLAY
C536
2 • Receiving Connect a frequency
counter to CP505. 15.734 kHz
[USA]
15.625 kHz
[Others]
DIS-
PLAY
R541
After the adjustment, connect J2231 (MAIN unit) and disconnect jumper wire between DISPLAY unit ground
and MAIN unit ground.
4 - 3
4-2 DDS ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION
REFERENCE
FREQUENCY 1 • Enter the adjustment mode.
• Push [F1 (REF)].
2 • Disconnect P4 from J801 (MAIN
unit).
• Receiving
REF OSC Connect a frequency counter to P4 and
set 124.032000 MHz using [DIAL]. Then
push [F-4 (SET)].
After the adjustment, exit the adjustment mode and connect P4 to J801 (MAIN unit).
4-4 TRANSMITTER ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION
DRIVE/FINAL
IDLING
CURRENT 1 • Enter the adjustment mode.
• Push [F-2 (TX)].
2 • Connect an RF power meter to
[ANT1] and [ANT2] connectors.
• Apply no audio signals to [MIC]
jack.
• Connect a DC ammeter (5 A
type) between power supply and
transceiver.
• Transmitting
Driver Idle Cur Preset the adjustment value to "00" using
with [DIAL], and check the driving current.
3 Rotate [DIAL] to set adjustment value to
1 A value from the driving current of "00"
value. Then push [F-4 (SET )].
4 Final Idle Cur(HF/50M)-1 Preset the adjustment value to "00" using
with [DIAL], and check the driving current.
5 Rotate [DIAL] to set adjustment value to
1 A value from the driving current of "00"
value. Then push [F-4 (SET )].
6 Final Idle Cur(HF/50M)-2 Preset the adjustment value to "00" using
with [DIAL], and check the driving current.
7 Rotate [DIAL] to set adjustment value to
1 A value from the driving current of "00"
value. Then push [F-4 (SET )].
8
Final Idle Cur(144M)
Preset the adjustment value to "00" using
with [DIAL], and check the driving current.
9 Rotate [DIAL] to set adjustment value to
2 A value from the driving current of "00"
value. Then push [F-4 (SET )].
10
Final Idle Cur(430M)
Preset the adjustment value to "00" using
with [DIAL], and check the driving current.
11 Rotate [DIAL] to set adjustment value to
2.5 A value from the driving current of
"00" value. Then push [F-4 (SET )].
After the adjustment, exit the adjustment mode.