Teac GF-450K7, Service Manual

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4
GF-450K7
3 ADJUSTMENTS AND CHECKS
ALIGNMENT PROCEDURES
3-1 TUNER SECTION
Use a screwdriver with a plastic or ceramic grip for all adjustment.
3-1-1 FM adjustment
1.Set the function switch to the FM position.
2.Connect the signal generator output through a 75 ohm dummy antenna to "ANT" on MAIN PCB.
3.Connect the oscilloscope to the speaker terminal.
4.Set the signal generator as listed in the alignment chart.
3-1-2 AM adjustment
1.Set the function switch to the AM position.
2.Connect the test loop antenna across the output of the signal generator.
3.Connect the oscilloscope to the speaker terminal.
4.Set the signal generator as listed in the alignment chart.
3-1-3 Turntable Section
1.Set the function switch to the PHONE position.
2.Connect the oscilloscope to the speaker terminal.
3.Use a HP-4005 record for all adjustment.
3-2 Adjustment and Test Points
Spec. Limit 1 2 3 UNIT
z H K 0 1 - / + 5 2 5 d n E w o L
z H K 0 3 - / + 0 3 7 1 d n E h g i H
z H K 5 - / + 5 5 4
m / v u B d 8 5 2 5 z H K 0 0 6
m / v u B d 8 5 2 5 z H K 0 0 0 1
m / v u B d 8 5 2 5 z H K 0 0 4 1
m / v u B d 4 6 8 5 z H K 0 0 6
m / v u B d 4 6 6 5 z H K 0 0 0 1
m / v u B d 4 6 6 5 z H K 0 0 4 1
05. I.F.Rejection(Max.Sens) b d 0 3 5 3 z H K 0 0 6 t a
b d 5 2 0 3 z H K 0 0 4 1 t a ) V m 5 ( n o i t c e j e R e g a m I . 6 0
% 5 1 5 . F . 1 x 2 m / V m 5 t a t e e w T . 7 0
% / / . F . 1 x 3
b d 5 1 0 2 z H K 0 0 0 1 t a z H K 0 1 - / + . A . C . A . 8 0
z H K 9 - 4 5
b d 0 3 5 3
% 5 2
W 5 . 3 6 . 3
z H 5 2 1 0 0 1
z H K 2 2 . 2
V M 0 1 3 ) e m u l o V n i M ( e s i o N & m u H . 4 1
b d 5 3 0 4
02. I .F
01. Tuning Range
ITEM
03. MAX. Sens.
04. Sen. For -20db S/N
09. Band Width -6db at 10% 1000khz Max Sens
10. A.G.C.(-10db) at 1000KHz 100db/m
11.T.H.D. 74db/m 30%MOD
12. Power Output at 10% THD 80%74db/m
13. Ferq. Resp. -Low
-6 db High
15. HUM Modulation 100db/m
: D E V O R P P A : Y B T S E T : S K R A M E R
120 V UL model Tuner adjustments AM