Adjustment; Connection Diagram Of Measuring Instruments; Fm Alignment - Denon AVR-1803/883 Service Manual

ADJUSTMENT

Tuner Section

CONNECTION DIAGRAM OF MEASURING INSTRUMENTS

FM

FM ALIGNMENT

Tuning
Alignment
Step Frequency
Item
Setting
Center 98.1MHz
1
Adjustment (98.0MHz)
98.1MHz
2 Distortion
(98.0MHz)
3
98.1MHz
4 Signal Level
(98.0MHz)
AM
AM ALIGNMENT
Alignment
Step Frequency
Item
999 (1000)
1 Signal Level
kHz
T402 T403
R471
IC402
VR402
TUNER B'D
Input
Input
Type Frequency Modulation
Level
FM SSG 98.1MHz 60dBµ
1kHz 100%
FM SSG 98.1MHz 60dBµ
1kHz 100%
Repeat Steps 1 and 2
FM SSG 98.1MHz 20dBµ
T402 T403
R471
TUNER B'D
Output
Input
Type

AM SSG
STEREO
MODULATOR
75ohm
FM SSG
Digital
Voltmeter
Coupling Type
Mono Antenna Digital
Terminal Voltmeter
Mono Antenna Distortion
Terminal Meter
Antenna Light "TUNED" on
OFF
Terminal FL Display
IC402
VR401
Adjustment
Connect to Points
Light "TUNED" on

VR401
AVR-1803/883
Output Adjustment
Connect to Points Adjust to
± 50mV
R471 T402
Output Minimum
T403
Terminal (L) Distortion
+14
VR402
20
−10
Remarks
Adjust to
SSG OUTPUT
FL Display 74dBµ (EMF)
dB
8