Icom IC-E90, Service Manual, Page: 26 / 57

5 - 9
ADJUSTMENT MODE ADJUSTMENTS (Continued)
• The following adjustment must be performed at “ADJUSTMENT MODE”.
FM
DEVIATION
(50 MHz)
(145 MHz)
(440 MHz)
DTMF
DEVIATION
(50 MHz)
(145 MHz)
(440 MHz)
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT LOCATION UNIT ADJUST
1
2
3
1
2
3
• Displayed frequency :
(DH ch.) 53.900 MHz
• Connect a audio generator to the
[MIC] jack and set as:
1 kHz/90 mVrms
• Set an FM deviation meter as:
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector
: (p-p)/2
• Output power : High
• Transmitting
• Displayed frequency :
(DH ch.) 144.000 MHz
• Transmitting
• Displayed frequency :
(DH ch.) 440.000 MHz
• Transmitting
• Displayed frequency :
(DM ch.) 52.000 MHz
• No audio applied to the [MIC]
jack.
• Set an FM deviation meter as:
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector
: (p-p)/2
• Output power : High
• Transmitting
• Displayed frequency :
(DM ch.) 144.000 MHz
• Transmitting
• Displayed frequency :
(DM ch.) 440.000 MHz
• Transmitting
Top
Panel
Top
panel
Connect an FM
deviation meter to
the [ANT] connector
through an attenua-
tor.
Connect an FM
deviation meter to
the [ANT] connector
through an attenua-
tor.
± 4.2 kHz
± 4.0 kHz
± 4.2 kHz
± 3.5 kHz
± 3.5 kHz
± 3.5 kHz
LOGIC
Top
panel
R365
R326
R325
[DIAL]
[DIAL]
[DIAL]
R325
FM deviation adjustment (440 MHz)
R365
FM deviation adjustment (50 MHz)
R326
FM deviation adjustment (145 MHz)
• LOGIC UNIT