8
AVR-1803/883
ADJUSTMENT
Tuner Section
CONNECTION DIAGRAM OF MEASURING INSTRUMENTS
FM
STEREO
MODULATOR
FM SSG
Digital
Voltmeter
75ohm
T402 T403
IC402
VR402
TUNER B'D
R471
20
+14
−
10
dB
AM
T402 T403
IC402
TUNER B’D
R471
VR401
FM ALIGNMENT
Input
Output
Adjustment
Step
Alignment
Item
Tuning
Frequency
Setting
Type
Frequency
Input
Level
Modulation
Coupling
Type
Connect to
Points
Adjust to
1
Center
Adjustment
98.1MHz
(98.0MHz)
FM SSG 98.1MHz
60dB
µ
Mono
1kHz 100%
Antenna
Terminal
Digital
Voltmeter
R471
T402
±
50mV
2
Distortion
98.1MHz
(98.0MHz)
FM SSG 98.1MHz
60dB
µ
Mono
1kHz 100%
Antenna
Terminal
Distortion
Meter
Output
Terminal (L)
T403
Minimum
Distortion
3
Repeat Steps 1 and 2
4
Signal Level
98.1MHz
(98.0MHz)
FM SSG 98.1MHz
20dB
µ
OFF
Antenna
Terminal
Light “TUNED” on
FL Display
VR402
AM ALIGNMENT
Output
Adjustment
Step
Alignment
Item
Frequency
Input
Type
Connect to
Points
Adjust to
Remarks
1
Signal Level
999 (1000)
kHz
AM SSG
VR401
Light “TUNED” on
FL Display
SSG OUTPUT
74dB
µ
(EMF)
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299