Teac AG-680 - Alignment Procedures; Adjustment Point Identification

EE ALIGNMENT INSTRUCTIONS
EQUIPMENT NEEDED:
AM Signal Generator
FM Signal Generator
Oscilloscope
VTVMIAC, DC)
Test loop antenna (AW Adjustment)
Dummy antenna (FM Adjustment)
Stereo signal modulator
Frequency counter
Distortion analyser
IMPORTANT
1. Check power-source voltage.
2. Set the function switch to band aligned.
3. Keep the signal input as low as possible to adjust accurately.
4, Modulation and modulation frequency.
item Modulati Modulation f
Band odulation odulation requency
a at
AM 30% 400Hz
FM 100%(75KHz Dev.) 400Hz
@ ADJUSTMENT POINT
AM LOOP ANT FM ANT
RESET Sw
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ANT TERMINAL
Tl C127 T182 Feu
L2
a ts FM RF COIL (9. 1@Hz)
ls
fer
77S lL?) —— FM OBC COIL
= im
& aris tT) ——— FM IFT MONO THD)
=A S
f Epa (eee 711 —— MW ANT COIL
IC) z
T1@2—— MW OSC COIL
| ‘S} |
7183 yy
L7
$ C127 —— MW ANT TRIMMER (15@3KH2)
Hy
=
i 1104 —— MW IFT
& T1Q3 ——~ FM IFT (MONO T.H 0)
VR11} —-— FM SD ADS
VR\2 —— MW SD ADJ
13> —— PM(AM) VT
CUP11194
ri
FM OFFSET ADJ TP
TP.
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SERVICE MANUAL