Lcd Contrast Adjustment; Front-A Unit For Ic-F2700 Series; Front-B Unit For Ic-F2800 Series - Icom IC-F2721 Service Manual

5-2 LCD CONTRAST ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITION
LCD 1 • Operating CH. : CH 1
CONTRAST
• Preset LCD contrast
• Receiving

• FRONT-A UNIT for IC-F2700 series

• FRONT-B UNIT for IC-F2800 series

UNIT
FRONT A/B C o n n e c t a d i g i t a l
: 64
(user set mode)
5 - 4
MEASUREMENT
LOCATION
multimeter or an oscillo-
scope to the check point
"CONTRAST".
R59: LCD CONTRAST ADJUSTMENT
LCD CONTRAST CHECK POINT
R59: LCD CONTRAST ADJUSTMENT
LCD CONTRAST CHECK POINT
ADJUSTMENT
VALUE
UNIT ADJUST
–2.0 V FRONT A/B R59