Wavetek 143 Instruction Manual page 25

FUNCTION OUT
IS BAD
PLACE All
CONTROLS TO
INITIAL* POSI-
TIONS
PROBLEM
TRY EACH CONTROL IN OTHER
POSITIONS, RETURNING TO
"'>---------I INITIAL POSITION. IDENTIFICA-
YES
TION OF MALFUNCTION INDI-
CATES WHICH CHART TO USE
YES
YES
YES
YES
CHECK
<
IN BOTTOM FOUR
FREQUENCY ..,._ _ _ _ _ _ _ _ __
CAPACITANCE
MULTIPLIER
RANGES ONLY
IC7 & ICB
~o
<
PROBLEM IN TRIG
& GATE MODES " - - - - - - - - - "
NO YES
*SYMMETRY TO OFF, FREQ VERNIER TO CAL,
DIAL TO 2.0, All OTHERS TO 12 O'CLOCK
*"SYMMETRICAL SQUARE OR OFFSET SQUARES
CHECK
SINE CONVERTER
CIRCUIT OR
SW4-C
CHECK
CR28 - 31, 017,
SW4-C, SW4-D
& SW4-E
CHECK
TRIANGLE BUFFER
CIRCUIT
CHECK
ICJ OR SW2 & R30
Figure 6-1. Initial Checks, Generator Board
6-2