Dp50710 - Sanyo DP50741 Service Manual

DP50710-00 / 01

DP50740-00 / 02 / 03 & DP50741-01
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.
Apply power to the SMPS.
These voltages should be present:
Connector:
P2 p1 191.2
p2
P6 p1 15.5
p2 15.5
p3
p4
p5
p6
p7
p8
p9
p10
p11
SMPS & Digital Processor
No cables attached to SMPS or Digital
Bd., except cable from D25 to P25.
P7 p1
p2
p3
p4
p5
p6
p7
p8
p9
p10
p11
P11 p1 191.2
p2
p3 15.5
5.0 P25 p1
p2
p3
p4
p5
p6
p7
p8
p9
p10
P35 p1
p2
p3
p4
p#3
11/04/10
15.5
15.5
5.0
3.0
55.5
55.5