2
step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output Level and
Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
1
1395kHz
(230,230RDS)
1400kHz(120)
CT801
5. AM-Tracking Adjustment (MW)
Signal Generator
output to transmission
loop antenna
(standard required loop)
5mV/m(74dBu)
400Hz
MOD.30%
594kHz
(230,230RDS)
600kHz(120)
594kHz
(230,230RDS)
600kHz(120)
T801
Output level(L or R)
at
TAPE-OUT
Minimum
Output level(L or R)
at
TAPE-OUT
Minimum
2
step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output Level and
Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
1
7. AM auto stop Adjustment
Signal Generator
output to transmission
loop antenna
(standard required loop)
1000uV/m(60dBu)
400Hz
MOD.30%
AUTO SCAN
"TUNED"
indicate on
VFD
999kHz
(230,230RDS)
1000kHz
(120)
999kHz
(230,230RDS)
1000kHz(120)
Only
Confirm
VR802
"TUNED"
indicate on
VFD
8. Main Amp ldling current Adjustment
4) CAUTION
(1) whenever power or driver transistors are changed, after repair you must re-adjust the idle current for repair, have to re-adjust that idle
current again.
(2) Discharge each large elec. Capacitor C481, and C482(8200u) on main amp board, and C691, C692(6800uF/50V) on surround amp board.
1) Alignment condition
(1) Adjust each of the variable resistors below in both the main and surround boards to the center position :
MAIN AMP BOARD : VR401, VR402, VR501
SURROUND AMP BOARD : VR601, VR602
2) Warming up system
After he above adjustment, turn the power ON and let the receiver warm up for 5 minutes to achieve a stable temperature for the driver and
power transistors.
3) Measurement condition
Adjust each variable resistor listed below clockwise for each channel, and adjust refer the following table for the details.
6. AM IF Adjustment
step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output Level and
Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
T803
Output level(L or R)
at
TAPE-OUT
Maximum
Signal Generator
output to transmission
loop antenna
(standard required loop)
5mV/m(74dBu)
400Hz
MOD.30%
999kHz
(230,230RDS)
1000kHz
(120)
999kHz
(230,230RDS)
1000kHz(120)
Output level(L or R)
at
TAPE-OUT
Maximum
1
step
Input Signal Source
Connection
Signal
Frequency
Source Signal Output Level and
Modulation
Reception
Frequency
Adjustment
Point
Adjustment
Value
1
522kHz
(230,230RDS)
520kHz(120)
5mV/m(74dBu)
400Hz
MOD.30%
Signal Generator
output to transmission
loop antenna
(standard required loop)
522kHz
(230,230RDS)
520kHz
(120)
(P9)
T802
1.1V 1.2V
4. AM OSC Adujstment
15mV 3mV
15mV 3mV
15mV 3mV
15mV 3mV
15mV 3mV
FRONT-L
FRONT-R
CENTER
SURR-L
SURR-R
VR401
VR402
VR501
VR601
VR602
R471
R472
R536
R671
R672
CHANNEL ADJUSTING LOCATION MEASURE LOC. VOL. DROP
-10-
45
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