Tektronix 314 - Page 44

SUPPLIES
WITHIN
LIMITS
>
CHECK POWER SOURCE,
POWER CORD, FUSES, 115/230V
SWITCH, REGULATING RANGE,
AND POWER SWITCH. CHECK
FOR
+12 V FROM PWR SUPPLY
CONNECT 314 TO
CORRECT POWER
SOURCE AND PULL
POWER SWITCH TO ON
.
CHECK POWER SUPPLY
TOLERANCES LISTED
IN TABLE 4
SWITCH CH
1 - CH 2 VOLTS/DIV
TO 5 DIV CAL; TIME/DIV TO
1 ms; SLOPE TO +: LEVEL AND
LOW LlNE
(PI LOT)
INDICATOR
ON STEADY
LOW LINE INDICATOR
OFF OR BLINKING
)
POSITION CONTROLS MID-
RANGE. PUSH CH
1 BUTTON
IN AND ADJUST INTENSITY
CLOCKWISE UNTIL SQUARE
WAVE IS DISPLAYED. PUSH
CH 2 BUTTON IN AND CHECK
FOR SQUARE WAVE
I
L
STABLE
5-DIVISION
DISPLAY
SUPPLY(S) OUT
OF LIMITS
)
MEASURE POWER-LINE
VOLTAGE 115/230
OR DC SUPPLY
i
STILL OUT OF
LIMITS
*
DISPLAY
NOT
STABLE
CHECK AFFECTED
POWER SUPPLY
NO HORIZONTAL DEFLECTION
)
CHECK
TRIGGERING
CIRCUIT
1 OK
.
CHECKFOR
SAWTOOTH AT
CRT NECKPINS
-
CHECK CRT
CIRCUIT
CHECK NO
UNBLANKING
*
GATE
DISPLAY AMPLITUDE
.
- LESS THAN 5 DIVISIONS t CHECK VERTICAL
(ONE CHANNEL) CHANNEL
AMPLIFIER(S)
I NO
NO
)
CHECK
UNBLANKING
CIRCUIT
DISPLAY AMPLITUDE
-
LESS THAN 5 DIVISIONS
(BOTH CHANNELS) CALIBRATOR
OK
- I CIRCUIT I
STABLE
5-DIVISION
DISPLAY
CHECK
TIME-BASE
CIRCUIT
CHECK
HORlZ DEFL
CIRCUIT
NO
)