Logic Unit - Icom IC-E90 Service Manual

ADJUSTMENT MODE ADJUSTMENTS (Continued)
• The following adjustment must be performed at "ADJUSTMENT MODE".
ADJUSTMENT ADJUSTMENT CONDITION
FM
1 • Displayed frequency :
DEVIATION
(DH ch.) 53.900 MHz
(50 MHz)
• Connect a audio generator to the
[MIC] jack and set as:
1 kHz/90 mVrms
• Set an FM deviation meter as:
HPF
LPF
De-emphasis : OFF
Detector
• Output power
• Transmitting
(145 MHz)
2 • Displayed frequency :
(DH ch.) 144.000 MHz
• Transmitting
(440 MHz)
3 • Displayed frequency :
(DH ch.) 440.000 MHz
• Transmitting
DTMF
1 • Displayed frequency :
DEVIATION
(DM ch.) 52.000 MHz
(50 MHz)
• No audio applied to the [MIC]
jack.
• Set an FM deviation meter as:
HPF
LPF
De-emphasis : OFF
Detector
• Output power
• Transmitting
(145 MHz)
2 • Displayed frequency :
(DM ch.) 144.000 MHz
• Transmitting
(440 MHz)
3 • Displayed frequency :
(DM ch.) 440.000 MHz
• Transmitting

• LOGIC UNIT

MEASUREMENT
UNIT
Top
Panel
: OFF
: 20 kHz
: (p-p)/2
: High
Top
panel
: OFF
: 20 kHz
: (p-p)/2
: High
5 - 9
LOCATION
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.
R325
FM deviation adjustment (440 MHz)
R365
FM deviation adjustment (50 MHz)
R326
FM deviation adjustment (145 MHz)
ADJUSTMENT
POINT
VALUE
UNIT ADJUST
± 4.2 kHz LOGIC
± 4.0 kHz
± 4.2 kHz
± 3.5 kHz Top
panel
± 3.5 kHz
± 3.5 kHz
R365
R326
R325
[DIAL]
[DIAL]
[DIAL]