Wavetek 145 Instruction Manual page 47

TOR MATCHES LIN <
VOLTAGE (PC BD
UNDER FUSE)
YES
~ -
BLOWN
REMOVEP1FROM
J1 ON GENERATOR
BOARD
REPLACE P1
CHECK
BLUE SECONDARY,
1,C2,CR1,CR2& 02
*BEFORE MAKING THIS MEASUREMENT, REMOVE ANY CONNECTIONS
BETWEEN THIS INSTRUMENT AND ANY OTHERS WHICH USE EARTH
COMMON
CORRECT IT
YES
REPLACE FUSE
./'-....
/'-..
A SHORT IS
NO AN OPEN CIRCUIT YES
ATCOROEsA-sRLTIHNEATOR>~---9<
~ ► (IS BETWEEN CIRCUIT ._ _ _ _ _ _ _ _ __.
COMMON & EARTH"
LINE CONNECTOR ?
? YES
CHECK TRANS-
FORMER & PR I-
MARY WIRING,
POWER SWITCH
GENERATOR BOARD
LOADING SUPPLIES
DOWN; LABELED
JUMPERS PROVIDED
TO AID IN TROUBLE-
SHOOTING
CHECK
BLUE SECONDARY,
C3, C4, CR3, CR4 & 04
NO
CHECK TRANSFORM-
ER SECONDAR"r &
WIRING, INSULATORS
UNDER REGULATORS
& PASS TRANSISTORS,
PINCHED CHASSIS WIR-
ING, SHORT BETWEEN
J1 & RECEPTACLE
SHIELD
CHECK
IC1, 03, 04,
07 & 08 CIRCUITS
CHECK
IC1, 01, 02,
05 & 06 CIRCUITS
Figure 6-6. Power supply checks, Trig/Pulse Board (Page 1 of 2)
6-12