System Power Module Diagnosis - Hitachi RAK-25NH4 Service Manual

SYSTEM POWER MODULE DIAGNOSIS

Circuit diagram of
the device
(excepting the
reflux diode)
Circuit diagram of
the module
Terminals symbol
mark of the module
See next page
for measuring
value using
tester
BASE
+
PGU PGV
U V
NGU NGV
–
P1 N1
+ –
L2 L1
– 115 –
Collector
Emitter
PGW
W
NGW
P2 U
W V