Lcd Contrast Adjustment; Soft Ware Adjustment - Icom IC-F1721/D Service Manual

5-2 SOFT WARE ADJUSTMENT

Select an operation using [↑] / [↓] keys, then set specifi ed value using [←] / [→] keys on the connected
computer keyboard
ADJUSTMENT ADJUSTMENT CONDITION
LCD 1 • Operating freq.
CONTRAST • Receiving
CONVENIENT:
The PLL lock voltage can be adjustment automatically.
Set the cursor to "RX LVA"/"TX LVA" and then push [ENTER] key.
• FRONT PANEL-A
• FRONT PANEL-B
UNIT
: 155.000 MHz FRON Connecta digital
0 - 0
MEASUREMENT
LOCATION
multimeter or an oscillo-
scope to the check point
"CONTRAST".
R53: CONTRAST ADJUSTMENT
CONTRAST CHCK POINT
VALUE
UNIT ADJUST
–2.0 V FRONT R59