R-33O
ê)
A]IGNMENT
PROGEDURE
1. Sbt thê volume control at maximum, bass,treble and balancecontrols at mechanicalcenter position, speakers
switch in
theposition
"MAlN".
2. Connect I ohms dummy load resistor (30-50W, non-inductivepreferably) to each R and L channel"MAIN" output
terminals of the unit. FMALIGNMENTPROCEDURE
(selector
switch in the position "FM")
Step Signal Source
Connection Signal
Frequency lndicator
Connection Dial Setting
of the Unit Adjustment
FMIFALIGNMENT
1
Sweep Generator
to point@
1O.7
MHz
Marker
at10.6,
10.7
and
10.8MHz
Oscilloscopeto
point@through
adiode Ouiet point
on band
Ll05, Ll06 for
maximum and
symmetry, response
2Oscilloscope
to
point@(Jt t t) LlO7
forstraightand
symmetricals-sharp
response
3Repeat step 1 and 2
FMRFALIGNMENT
1
RF generator
to
FM Antenna
terminals through
matching network
(300 ohms balanced)
87 MHz
VTVM to R or L
channeloutput
terminals
(J003)
87 MHz tuning
closed Ll04 for maximum
2109
MHz 1O9MHz tuning
gang
open Cl14Íor maximum
390 MHz 90 MHz L101,L102
formaximum
4lOGMHz 106MHz cF-1,
CF-2
formaximum
5Repeatstep 1 e4
6Check overall response
curveancl
repeat
abovestepsasnecessary
to obtain maximum sensitivity.
7No connection No signal D.C.VTVM
1Volt range
to
@trrrrt
Ll 07 secondarycore
(upper) for No Voltage
reading
8
RF generator
to
FM antenna
terminals through
matching network
(300 ohmsbalancedl
output lmV {lHFl
98
MHz Distortion meter
to@{.tt
tt
)98 MHz
LlO7 primary core
(bottom) for minimum
distortion
)
J
2
