Teac A-550RX Service Manual page 13

A-SSORX
VR104/VR204 setting
Fig. 5-10 Fig. 5-11
A: 1 kHz sine-wave (fundamental)
B: Distortion wave (2 kHz)
C: 3 kHz sine-wave (third harmonic of fundamental)
ADJUST MEASURING
STEP.
SIGNAL
SOUREE
(or CHECK)
POINT
RESULT
REMARKS
(on DBX PCB)
1 kHz/—32 dB
=
16
(19.5 mV)
VR105/VR205
TP2L/TP2R
8 dB (308 mv)
Ref. 2
7
100 Hz/—32 dB
Check
+0.5 dB +1 dB varies from ref. 2
18
10 kHz/—32 dB
—4.7dB +1 dB varies from ref. 2
19
1 kHz/—92 dB
—38 dB +0.5 dB (9.21 mV ~
(19.5 pV)
10.3 mV)
ie
1 kH2/—-12 dB
+2 dB 40.5 ee
Vv)
(19.5 pV)
0.7% or jess distortion
13