Tektronix 453 User Manual

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Connect the Type 453 to the correct I POWER light does not come on
power source and set POWER switch to - - - - - - - - - - - - - - - - -
ON. Allow several minutes warm up
Check power source, line cord, fuses, thermal cutout, POWER switch,
power transformer and POWER light bulb
POWER
light on
Check power supplies for tolerance given I Outside given tolerance
in Table 4-3 - - - - - - - - - - -
Measure power line voltage
and check if Voltage Selec-1 No
tor Assembly on rear panel
is set to correct voltage
Yes
Set assembly for correct Still Incorrect
voltage and recheck affect- - - - - - - - .,
ed power supply Is I :
Correct
Within
given
tolerance
I
L
Check and/or adjust
'------------------------------...i affected supply Isl
Set vertical and horizontal POSITION
controls to midrange, TIME/DIV switch I Trace doe
to 1 ms, A SWEEP MODE switch to AUTO - - - - - ~ - -
TRIG
and HORIZ DISPLAY switch to A. not appear
Advance the INTENSITY control setting
Press TRACE FINDER button and center
compressed display with CH 1 and CH
2 POSITION and horizontal POSITION
controls. Release TRACE FINDER button
Trace
appears
Trace remains within display area
Adjust FOCUS control and ASTIG adjust- , __ Ti:!J~ _!!~~ _
ment for sharp, well-defined trace not focus
Check
High-Voltage stages
I CRT circuit)
Trace
focused
Set MODE switch to CHOP or ALT. Rotate
CH 1 & 2 POSITION controls
Both traces
positionable
Rotate horizontal POSITION and FINE
controls
Traces
positionable
Only one
channel
f" po;itTo;able
I
-- --4
: Neither
L ~~n!!_e.!._ _~
positionable
Traces
not positionable
Check Vertical Preamp cir-
cuit
which is not position-
able
Check Vertical Switching and Ver-
tical
Output Amplifier circuits. If
correct, check both Vertical Preamp
circuits
Check
Horizontal
Amplifier
No trace
or only
r----~
1
a spot
1
appears
--1
Check sawtooth at Pin AA on A
Sweep board I about 10 volts
peak to peak)
Yes
Check
sawtooth at either hori-
zontal deflection plate !about
70 volts peak to peak)
Yes
No I Check A Sweep
Generator circuit
No
Check Horizontal
Amplifier circuit
Check A unblanking gate at Pin I No
I on A Sweep board (about
Check A Output
Signal Amplifier
stage
0.2 volts peak to peak)
Yes
Check
unblanking gate at I No
TPl 047 on Z Axis board
Yes
Check
CRT circuit
Check Z Axis
Amplifier
circuit
0~m_!~s~e~- ~a~e- ~~a!~~s-~!.."
TRACE FINDER button is released
Check CH 1 and CH 2
Vertical Preamps, Vertical
switching and Vertical
Output Amplifier circuits
Only one
channel
~------
Connect flie~Hz CAL connector to
both INPUT connectors. Set the Input
Cuupling switches fo DC, VOLTS/DIV
switches to .2, Calibrator switch to 1 V.
Check for about five divisions deflec-
tion on each channel
No . I Check if VARIABLE VOLTS/ I No
DIV controls are set to CAL
Return VARIABLE control to CAL.
Check for five divisions deflection
' incorrect
---------!
I
Check affected Ver·
tical Preamp circuit
Yes
Set TRIGGER switch to CH 1 ONLY, A
SOURCE switch
to INT, A COUPLING
switch to AC and adjust the A LEVEL
control for a stable display
Stable
Display IA
SWEEP TRIG'D
light on)
Stable
display
--~;";,
be obtained
Yes
Set TRIGGER switch to NORM.
Check for
stable display
Yes
Check
Channel 1 Trigger Pickoff
stage and Trigger Preamp circuit
No
- - .,
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L
Yes I Both
I..-------,
channels
1
incorrect I
Check
for one-volt peak to peak
1
No
squarewave at 1 kHz CAL con-
nector with test oscilloscope
Yes
Check Vertical
Deflection system
Check A Trigger Generator circuit,
Normal Trigger Pickoff stage and
Trigger Preamp circuit
Check
Calibrator
circuit
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Tektronix 453 Specifications

General

Brand	Tektronix
Model	453
Category	Test Equipment
Language	English