Wavetek 143 - Page 32

FUNCTION OUT *SYMMETRY TO OFF, ЕВЕО VERNIER TO CAL,
15 BAD DIAL TO 2.0, ALL OTHERS TO 12 O'CLOCK
**SYMMETRICAL SQUARE OR OFFSET SQUARES
PLACE ALL
CONTROLS TO
INITIAL* POSI-
TIONS
TRY EACH CONTROL IN OTHER
POSITIONS, RETURNING TO
INITIAL POSITION. IDENTIFICA-
TION OF MALFUNCTION ΙΝΡΙ-
CATES WHICH CHART TO USE
NO
41,25
WAVEFORMS YES YES TIANG UE NO БЕ
BAD OR MISSING [c
NO
CHECK
FREQUENCY YES ^y GOOD YES SINE CONVERTER
BAD ^ BAD CIRCUIT OR
NO
SYMMETRY YES
BAD
ντο
ΝΟ
GOOD CHECK
YES
СЕЗЕ MES VAN TRIANGLE BUFFER
BAD BAD CIRCUIT
; ?
С ЕР
СНЕСК
ҮЕ5
CR28
-
31,
017,
SWA-C, SW4-D
& SW4-E
PROBLEM CHECK
IN BOTTOM FOUR CAPACITANCE
FREQUENCY MULTIPLIER
RANGES ONLY
p
BE
PROBLEM IN TRIG
< & GATE MODES
?
: YES
ІС? & IC8
SYMMETRY
CONTROL MAL-
FUNCTIONS
CHECK
IC3 OR SW2 & R30
Figure 6-1. Initial Checks, Generator Board
6-2