
SECTION 8 Troubleshooting
Rev C
127
SATO M-8400RV Service Manual
Symptom
Probable Cause
Suggested Corrective Action
1R3ULQWHG
,PDJH
'DPDJHGSULQWKHDG
5HSODFHSULQWKHDG
'DPDJHGHOHFWURQLFV
5HSODFHFLUFXLWERDUG
%DFNOLJKW
EXWQR
ZRUGVRQ
GLVSOD\RUQR
GLVSOD\
0RVWFRPPRQIDLOXUHRISULQWHULV
'2$VLWXDWLRQ7KHPRVWOLNHO\
FDXVHLVWKHULEERQFDEOHKDVIDOOHQ
RXWRUQRWVHDWHGIXOO\LQWR
FRQQHFWRU
$GMXVWGLVSOD\SRWHQWLRPHWHURQ
GLVSOD\SDQHO
9HULI\WKDWWKHFDEOHDQGFRQQHFWRU
DUHSURSHUO\VHDWHG
32:(5/('
QRWRQ
$&SRZHUFDEOHQRWFRQQHFWHG
9HULI\WKDWWKHFDEOHLVFRQQHFWHGWR
WKHSULQWHUDQGWKH$&RXWOHW
0DLQ3RZHU)XVHGHIHFWLYH
5HSODFHIXVH
'HIHFWLYHSRZHUVXSSO\
7HVWSRZHUVXSSO\DQGUHSODFHLI
GHIHFWLYH
(5525/('
RQ
+HDGQRWORFNHG
&ORVHDQGODWFKKHDGUHOHDVH
/$%(//('
RQ
/DEHOVXSSO\UROOHPSW\
5HSOHQLVKODEHOVXSSO\
/DEHOVWRFNQRWURXWHGWKURXJK
VHQVRU
5HORDGODEHOV
/DEHOVHQVRUQRWSRVLWLRQHG
FRUUHFWO\
$GMXVWVHQVRUSRVLWLRQ
/DEHOVHQVRUEORFNHG
&OHDQODEHOVHQVRU
,QFRUUHFWODEHOVHQVHWKUHVKROG
VHWWLQJ
$GMXVWODEHOVHQVHWKUHVKROG
3ODWHQGULYHPDOIXQFWLRQ
6HH6HFWLRQ0HFKDQLFDO
$GMXVWPHQWV
5,%%21
/('RQ
5LEERQVXSSO\UROOHPSW\
5HSOHQLVKULEERQVXSSO\
5LEERQVHQVRURXWRIDOLJQPHQW
5HDOLJQULEERQVHQVRU
5LEERQVHQVRUEORFNHG
&OHDQULEERQVHQVRU
1RFDUGERDUGFRUHRQULEERQ
UHZLQG
8VHFDUGERDUGFRUHRQULEERQUHZLQG