Mitsubishi FREQROL-SF Troubleshooting Manual page 74

Ac spindle drive
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(Note) Even if part of the diode stack is defective,
replace the entire amplifier with a new one.
If it is necessary to replace the diode stack, by
referencing Section 2.7, replace it with a new one.
Criterion list
(when x 10 R range of the circuit tester is used)
checked
Between
P and R
Between
P and S
Between
P and T
Between
N and R
Between
N and S
Between
N and T
Between
P and N
(Note)
terminal: Red lead of circuit tester
terminal: Black lead of circuit tester
Circuit tester
terminal
'nal
nal
P : @ termii
nal
P
nal
P
terminal
P
N
N
nal
nal
nal
nal
P
terminal
P
terminal
OK
Shortcircuited,
Indefinite
several 1OOQ
Shortcircuited,
Several 10R
indefinite
Shortcircuited,
Indefinite
several 1002
Shortcircuited,
S e v e r a l
Shortcircuited,
Indefinite
several 1005
Shortcircuited,
Several 10R
indefinite
Shortcircuited,
Several 102
Shortcircuited,
Indefinite
several 10012
Shortcircuited,
Several 109
indefinite
Shortcircuited,
Indefinite
several 1OOR
Shortcircuited,
Several 1052
indefinite
Shortcircuited,
Indefinite
Shortcircuited,
Indefinite
several lOOti
Shortcircuited,
Several 1OOR
indefinite
No good

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