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3. MAINTENANCE, TROUBLESHOOTING
3-4
3. MONITOR TEST is selected; press the ENT key. The test program
automatically proceeds in the sequence shown below.
[MONITOR TEST]
BOOT NO.:
2450020
-XX.XX
PROG NO.:
2450021
-XX.XX
ROM : CONT :
SDRAM: DIM :
PORT :
KEY :
XX.XX = Program version no.
QUIT[MENU] 3 TIMES
PUSH KEY
[MONITOR TEST]
BOOT NO.:
2450020
-XX.XX
PROG NO.:
2450021
-XX.XX
ROM : OK CONT :53
SDRAM: OK DIM : 4
PORT : OK
KEY :
QUIT[MENU] 3 TIMES
<LCD CHECK>
ALL ON 2 SEC.
ALL OFF 3 SEC.
(a) (b)
(c)(d)(e)
a) The first screen in the test shows boot no. and program no. The message
“PUSH KEY” prompts you to test the keys. Press each key (except the
PWR key) and arrows on the CursorPad one by one. The name of the
pressed key or arrow appears next to “KEY” if the control is functioning
normally.
b) The ROM, SDRAM and (I/O)PORT (special test connector required,
otherwise “NG” appears) are checked. The results of the ROM/ SDRAM
check are shown as OK or NG (No Good). If NG appears, try the test
again. If NG still appears, contact your dealer for advice.
The contrast and dimmer settings are automatically changed. Check that
their setting indications are reasonable.
c) The screen announces the start of the LCD check.
d) The screen turns black.
e) The screen turns white.
4. The test is repeated. To escape from the test and return to the
DIAGNOSTICS menu, press the MENU key three times when PUSH KEY
is displayed.