Hitachi RAS-2-HVNP Service Manual page 280

8. Troubleshooting
  
Self-checking procedure of PCB by means of the Remote Control Switch
The self checking performs to check the remote control switch and to clear EEPROM (storage cell inside of the remote
control switch).
(1) Press and hold " " (menu) and "?" (help) simultaneously for
3 seconds during the normal mode (when unit is not operated).
The check menu is displayed.
(2) Select "Self Checking" from the check menu and press
"OK".
(3) Select the process for "Self Checking".
* To start self check, press "?" (help).
* To clear EEPROM, press " " and "?" (help) simultaneously.
See EEPROM clear process (15) (next page).
(4) LCD Test
Press "OK" and the screen will be switched as shown in the
figure.
(5) Backlight Test
LCD brightness changes gradually by pressing "OK".
(6) Contrast Test
Contrast of the LCD gradually changes by pressing "OK".
(7) Run Indicator Test
Press "OK" and the run indicator will flash in red and green twice
for each.
(8) Switch Input Test
Press the 9 switches one by one. The number indicated with "
A
" will be counted up as switch being pressed.
* The order of pressing switch is at random.
Do not press more than 1 (one) button, for it will not be counted.
266
SMGB0079 rev.0 - 01/2013
Check Menu
I. U./O. U. PCB Check
Self Checking
SEL.
Self Checking
0 1 : 0 0 0
P-3400
ARF-8Y050 2008.11.06 12:34
Self Checking
0 2 : 0 0 0
Self Checking
0 3 : 0 0 0
Self Checking
0 6 : 0 0 0
02
/
02
ENT. RTN.
OK