Wavetek 171 - Page 26

POWER SUPPLY REGULATOR CHECK
NO REGULATED+&
-15 Vdc AT TP2 & TP3;
FUSE
OK
NOTE: Test points and designators apply
'
to generator (upper) board.
NO
-15 Vdc REGULATOR
IS ASSUMED TO BE
DEFECTIVE
6-6
YES
-15 Vdc REGULATOR
IS ASSUMED TO BE
IN CURRENT-LIMIT
MODE
ISOLATE LOW Z
BY
LIFTING -15V
JUMPERS
+15 Vdc REGULATOR
IS ASSUMED TO BE
DEFECTIVE
Figure 6-3. Power Supply Checks
YES
NO+SV
AT J1-2
CHECK
VR1 CIRCUIT
+15 Vdc REGULATOR
IS ASSUMED TO BE
IN CURRENT-LIMIT
MODE
ISOLATE LOW Z
BY LIFTING +15V
JUMPERS