Adjustments; Am Tuner Adjustment; Fm Tuner Adjustment - Pioneer F-Z94 Service Manual

6 . A D J U S T M E N T S
O As to connections and points to be adjusted, refer to Fig. 6-1
O Where and asterisk(*) is given for "level dBpr," set to the
between TP1104 and GND at 60dB.
6 . 1 A M T U N E R A D J U S T M E N T
O Set the BAND selector to '(AM",
and Fig. 6-2.
level (dBp) at which the voltage is roughly half the voltage
Stcp
ilo.
Adjurtmcnt Titlc
AM SG(feOHz, 30olo modslrtion)
Rcccption
Frcqucncy
Dirolrv
Adiuctment
Frcqucncy(lHr) Icvcl(dBp)
Adjurtmcnt
Location
Spccificetionr
1
Tracking adjustment
(ZEWZ typc only)
603 603kHz
MW block ANT coil
(T1103)
Adjust so that the DC voltagc
bctwccn TP11O4 and GND is
maximum.
2 1395
1395kHz TC1101
3
R c p c a t l a n d 2 a b o v c
4
TUNED indicator
scnsitivitv adiustmcnt
999 55-t-5 999kHz
vR1104
Adjust so that thc indicator
lights up.
6 . 2 F M T U N E R A D J U S T M E N T
O Set the BAND selector to "FM".
O Perform VCO adjustment two minutes or more after turning the power ON.
Note : Stereo modulation : Main lkHz L t R+68.25H2 dev.
Pilot l9kHzt 6.75kHz dev.
Stcp
N o .
Adjortmcot Titlc
FM SG(trHztT5lHr dcv.)
Rcccption
Frcqocncy
Dirohv
Adiurtment
Frequcncy( ll Hz) !cvcl(dBp)
Adjuctmcnt
Locrtion
Spccificetionr
I
Detector coil
T-mctcr adjustmcnt
98.0
(No modulation)
80 98.0MHz L11(X
Adjust so that thc DC voltage
between TP1101 and TP1l02 is-F
50mV.
2
VCO adjustment
98.0
(No modulation)
80 98.0MHz
vR1102
Adjust so that the frcqucncy
bctwccn TP1105 and GND is 76t
0.5kHz
3
TUNED indicator
scnsitivity adjustmcnt
98.0
(No modulation)
22 98.0MHz
vR1103
Adjust so that the indicator lights
u P .
1 5