Metrohm 730 Sample Changer - Manuel (Page 171)

5.4 Diagnosis
730 Sample Changer, Appendix
168
Required Instruments:
Only required, if the RS232 or remote interface is to be checked:
Test plug 3.496.8550 (on the 'Remote' plug)
Test plug 3.496.8480 (on the 'RS 232' plug)
5.4.2 Preparing the Instrument
• Disconnect power plug
• Remove cables to the RS232 and remote interfaces.
• Plug in power plug and immediately press <9> and keep it de-
pressed until the start test pattern disappears.
• Alternatively, the <CLEAR> key can be pressed to cause a re-
set followed by pressing (within 0.4 sec) and holding down the
<9> key to open the diagnosis menu.
Switch on and
9
LIFT
or
RESET
CLEAR
and
9
LIFT
Main Menu Diagnosis:
diagnosis
>RAM initialization
Open the submenu with <ENTER>
diagnosis
>RAM test
Use < é > or <ê> to access one menu item up or
down
diagnosis
>display test
Use <HOME> or <END> to access first or last
menu item
diagnosis
>display contrast test
<QUIT> returns to the normal state
diagnosis
>key test
diagnosis
>remote test
diagnosis
>RS232 test
diagnosis
>external bus test
diagnosis
>beeper test
diagnosis
>rack code test
diagnosis
power on reset
The "function test" is a Metrohm internal test.