-76-
TROUBLESHOOTING - 13/26
NO
NO
Check the connection of IC201 pin2.
Replace the IC201(OTI-9790)
NO
Replace the IC509(NJM3404AV).
NO
Check the connection of IC701 pin98.
Replace the IC701(MICOM)
NO
Check the connection of IC701 pin94.
Replace the IC701(MICOM)
Check the connection of IC510 pin19.
Replace the IC510(BA6664FM)
Check the spindle Connector
(CN502)
Replace the Spindle Motor.
NO
Spindle operating is abnormal.
Is there Spindle
control signal input?
(IC510 pin 22)
YES
YES
YES
Is there Spindle
control signal output?
(IC509 pin 7)
YES
Is there DMO signal input?
(IC509 pin5)
Is there Spindle
drive voltage output?
(IC510 pin 2,4,7)
Is SPNON signal H ?
(IC510 pin 23)
YES
YES
Is SBRK signal L ?
(IC510 pin 18)
NO
Is there
a SPNFG signal input?
(IC701 pin 95, IC201
pin 7)
YES
Replace the IC508(BU4053).
OK
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299