DP50719-00
p#3
DP50749-02
12/16/10
SMPS & Digital Processor
Apply power to the SMPS.
No cables attached to SMPS or Digital
Bd., except cable from D25 to P25.
These voltages should be present:
P25
p1
15.5
Connector:
p2
15.5
P2
p1
193.6
P7
p1
p3
p2
p2
p4
p3
p5
5.0
P6
p1
p4
p6
5.0
p2
15.5
p5
5.0
p7
p3
15.5
p6
p8
p4
p7
p9
5.0
p5
p8
p10
p6
p9
p11
3.3
p7
p10
p12
p8
15.5
p11
p13
p9
15.5
p10
P11
p1
193.6
P35
p1
60.3
p11
p2
p2
60.3
p12
p3
p3
p4
15.5
p4
IF YOU BELIEVE THE SMPS IS DEFECTIVE
The SMPS can be checked, but all cables & flat ribbons from the SMPS & Digital Processor PCB
must be unplugged. The only exception is the cable from D25 (D Bd.) to P25 (SMPS) must be
connected. With everything disconnected except this one cable, and when power is applied to
the SMPS, the SMPS should turn ON.
If the SMPS is working OK, please reconnect all connectors to the SMPS & Digital Processor. If
one of the other PCBs is defective, it is possible to damage the SMPS, w/o the flat ribbons
connected to the Digital Processor.
