![background image](http://html.mh-extra.com/html/mitsubishi/freqrol-sf/freqrol-sf_troubleshooting-manual_1809040008.webp)
1 Troubleshooting
Table 1.3
Checking power voltage
Checking
Amplifier input pins
AC power voltage
Xl, X2, X3, and E
See Appendix l-l
Checking DC power
supply voltage on
Checking DC output
voltage at check
See Appendixes 5,
printed circuit
pins on SF-PW card
and
board
Table 1.4
Trouble classification
cation
Situation
1
When the amplifier is powered on at the first
time,
it does not normally work.
1.2.1
2
The equipment which has normally worked does
not abruptly work.
1.2.2
The equipment does not work in occasions.
The orientation stop position deviates from
3
the specific position.
Although an alarm
1.2.3
lights,
it is recovered by turning off and
then on the equipment or by resetting it.
When the power is turned on, the display of
1
the operation panel does not appear at all.
Alternatevely,
the DC voltage of the printed
circuit board is not correct.
When the power is turned on, the display on
the operation panel does not indicate
2
tions in the status display mode (as shown in
1.3.2
B
the following figure).
The display on the amplifier printed circuit
board (SF-CA card) indicates an alarm (as
3
shown in the following figure).
1.3.3
Continued on the next page.
Summary of Contents for FREQROL-SF
Page 100: ... 3 Display lamps See Appendix 8 2 4 Check terminals See Appendix g 3 95 ...
Page 101: ......
Page 102: ......
Page 103: ......
Page 104: ......
Page 105: ......
Page 106: ......
Page 107: ......
Page 108: ......
Page 109: ......
Page 110: ......
Page 111: ......
Page 128: ......
Page 129: ......
Page 130: ......
Page 131: ......
Page 132: ......
Page 133: ......
Page 134: ......
Page 135: ......
Page 136: ......
Page 137: ......
Page 138: ......
Page 139: ......
Page 140: ......
Page 141: ......
Page 142: ......
Page 143: ......
Page 144: ......
Page 145: ......
Page 146: ......
Page 147: ......
Page 148: ......
Page 149: ......