Failures Of Lcd Display - Furuno DSC-60 Service Manual

2.3 Failures of LCD display

If CONTRAST is adjusted at its minimum, nothing is displayed on LCD. If nothing appears or anything
is missing on LCD display, turn off power and then, turn on again first.
If failure often occurs, exchange
CONTROL/MODEM board.
LCD display failure
YES
LCD recovers from the failure after
power is turned off and then on?
NO
Connections between
CONTROL/MODEM and PANEL
boards are OK?
Rectify.
Exchange PANEL board.
2. Countermeasures against Various Failures
NO
YES
5 V is supplied to
PANEL board?
Exchange CONTROL/MODEM
board. U16 is faulty.
YES
YES
Is the panel key operation possible?
7-9
NO
NO
If LCD does not recovers, exchange
CONTROL/MODEM board.