TUNER ADJUSTMENTS
Use a plastic screw driver for adjustments.
MODE : STEREO
Speaker impedance
:
6 ohm
TUNING
FM
:
87.5
-
108.0MHz
(50kHz step)
MW
:
522
-
1611 KHz
(9kHz
step)
LW
:
144
-
288KHz
(9kHz
step)
FM ANT._
750hm
(E)
AM LOOP
ANT.
c
(H)
l.FM
Step
1
2
+
J2005
TP12(E)
L2154 L2153
CT251 CT252
@I@
TP27(
E)
/
R2325
0
o/R2326
I‘\
TP25(L-CH)
TP26(R-CH)
SG RF Level
:
75 open Voltage
dBpV
Antenna
:
75 unbalanced
,
Modulation
:
1
kHz
Dev.
:
f22,5kHz(MONO) +22.5KHz(STEREO)
f6.75KHz(PILOT)
Adjusting
Connection
SG
Set
Adjustment
Remark
Circuit
Input
Output
Frequency Position
Cover
_.-
Connect Digital DC voltmeter to
67.5MHZ
Low ---
more than 0.9 V
Vhge
___
TPIl(H),
TP12(E).
1
OB.OMHZ
High
___
less
than
9.OV
Tracking Connect FM SG to FM Antenna Connect to
VlVM
9O.OMHZ
Low ---
Max.
(SG=6dB
/IV)
TP25(L)
or
TP26(R),
TP27(E)
106.OMHZ
High
___
SG Modulation
:
1
kHz,
30%
Antenna, IRE Loop, Distance
:
60 cm
2.MW
Step
Adjusting
Connection
SG
Set
Adjustment
Remark
Circuit
Input
Output
Frequency Position
1
Cover
___
Connect Digital DC voltmeter to 522kHZ Low
L2153
vt
= 1
.OVfO.O5V
Voltage
___
TPll(H),
TP12(E).
16llkHZ
High ---
less than
9.OV
2
Tracking Conned AM SG to
Connect to VTVM 603KHZ Low
I2152
Max.
Test loop
Ant.(SG=8CdB
pv)
TP25(L)
or
TP26(R),
TP27(E). 1404kHZ
High
CT252
3.LW
Step
Adjusting
Connection
SG
Set
Adjustment
Remark
Circuit
Input
output
Frequency Position
1
Cover
___
Connect Digital DC voltmeter to 144kHZ
Low
L2154
vt
=
I
sv
+o.o5v
Voitage
___
TPI
l(H),
TP12(E).
26%kHZ
High ---
less than
9.OV
2
Tracking
Connect
AM SG to
Connect to VlVM
162KHZ Low l2151
Max.
Test loop
Ant.(SG=8OdB
/IV)
TP25(L)
or
TP26(R),
TP27(E). 279kHZ
High
CT251
-4-
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