Vertical Amplifier; Horizontal Amplifier - RCA 54-45 Manual

Sweep inoperative on
some ranges
Loss of synchronization
With appropriate signal
applied to INPUT, no
vertical displacement
of the trace results .
No vertical positioning
No vertical signal
Square wave ( lkc) dis-
ill
tor ted in POS . of
the attenuator
No vertical gain adjust
Trace "jumps" vertically
on CRT screen
No horizontal deflection;
0. K.
sweep checks and
SWEEP SELECTOR in
one of SWEEP positions
No horizontal positioning
Horizontal deflection
present but distorted
Trace off screen
SWEE P CIRCUIT (Cont'd. )
One of C l7 - 20 defective
S3 defective
V4C defective
S4 defective
C 14 open
Sync leads defective

VERTICAL AMPLIFIER

Defective S l
One o r more tubes defective
One or more components in the
vertical amplifier defective
Rl2 defective
C 3 open
Open leads
C 1 out of adjustment
R8 defective
Loose connection in vertical
amplifier section
One of the tubes "microphonic"
Line voltage variations

HORIZONTAL AMPLIFIER

C7 open
V5 defective
C l3 shorted
S3 defective
R43, R44, R45 , R46, R47 defective
C l3 open
V5 defective
R4 1, 42 defective
C 8, C9 open
C 8 , C9 shorted
34
Replace the defective capacitor*
Replace
Replace V4
Check. Replace if necessary
Replace
Replace
Check. Replace if necessary
Check Vl. Replace if defective
Check resistors and potentiometer
with ohmmeter. Replace if
defective
Replace Rl2
Replace C 3
Repair
Adjust C l
Replace R8
Repair
Tap tubes lightly. Replace the one
which is "microphonic".
Not scope defect
Replace
Check and replace if bad
Replace
Replace
Check and replace if necessary
Replace
Replace
Replace
Replace
Replace
s