Icom IC-7600 Service Manual page 30

4-6 MAIN UNIT ADJUSTMENT (continued)
ADJUSTMENT ADJUSTMENT CONDITION
AM CARRIER 1 • Frequency
POWER • Mode
• MIC input
• Transmitting
Id-APC 1 • Frequency
-Preparation- • Mode
• Transmitting
-Adjustment- 2
3 • Disconnect CP1253 from the GND.
RX 1 • Frequency
SENSITIVITY • Mode
• Receiving
IMAGE 1 • Frequency
RESPONSE • Mode
• Receiving
†
; The output level of the standard signal generator (SSG) is indicated as the SSG's terminated circuit.
: 14.100 MHz 1) Connect an RF Power meter to
: AM [ANT1].
: OFF 2) Adjust the TX output power.
: 54.000 MHz 1) Connect CP1253 to GND.
: RTTY 2) Turn R1211 to max. clockwise, then
turn it to 90° position.
3) Disconnect the power cable from
the transceiver, and connect an DC
Ammeter (30 A) between the power
supply and transceiver.
1) Connect an RF Power meter (or
Dummy Load) to [ANT1].
2) Adjust the driving current.
: 14.150 MHz 1) Connect an SSG to [ANT1], and set
: USB it as.
Frequency
Level
Modulation
2) Connect an AC Millivoltmeter to
[EXP-SP].
3) Adjust the sensitivity.
: 14.150 MHz 1) Connect an SSG to J3701, and set
: USB it as.
Frequency
Level
Modulation
2) Connect an AC Millivoltmeter to
[EXP-SP].
3) Adjust the image response.
4 - 11
OPERATION
: 14.1515 MHz
†
: 0 dBµ (107 dBm)
: None
: 64.530 MHz
†
: +50 dBµ (–57 dBm)
: None
ADJUSTMENT
VALUE
POINT
R1255 30 W
– –
R1211
(Clockwise 23.5 A
rotation)
Max. audio
L3602
output level
R3216, C3006 Min. audio
(Repeatedly) output level