Toshiba DP120F Service Manual page 620

1.2.4 LCD TEST
The LCD test checks the LCD operation by turning on and off all the dots of the LCD on the
Operation panel.
Use the [ ↑ ] or [ ↓ ] key to select "04. LCD TEST", and then press the [ENTER] key.
(1)
LCD TEST
LCD WILL CHANGE BLACK
AND THEN CLEAR
PRESS START KEY
(2) All the dots should turn on when the [START] key is pressed. Five seconds later, all the
dots should turn off. Visually check that all the dots are turned on and off normally. Then,
the test result input screen is displayed five seconds after the dots turn off.
LCD TEST
ENTER TEST RESULT
1.OK
2.NG
Use the [ ↑ ] or [ ↓ ] key to select "1.OK" or "2.NG", and then press the [ENTER] key.
(3)
If all dots of the LCD turn on and off normally, select "1.OK." If even one dot fails to turn on
and off, select "2.NG."
(4) The "OPERATION COMPLETED" message is displayed and the unit returns to the test
item select screen of the individual test.
<Remarks>
DP120F/DP125F Troubleshooting
Display for 5sec
The result of the LCD TEST can be checked with the self test report. For
printing the self test report, refer to "1.3 TEST RESULT LIST" on page 11-
14.
If the result of the LCD TEST is judged to be NG, solve the problem by
referring to "1.5.1 OPE. PANEL TEST" on page 11-16.
[MENU], [9], [2], [04]
→
11-8 March 2000 © TOSHIBA TEC