Adjustment Procedures; Tuner; 75Khz Oscillator; 4.332Mhz-Oscillator - Grundig noctus SC 9100 DCF RDS Serviceanleitung

NOCTUS - SC 9100 DCF RDS
Adjustment Procedure

Tuner

Test equipment: Signal Generator, Oscilloscope, Digital Voltmeter
Adjustment
FM Oscillator 87.5MHz;
Digital Voltmeter to testpoint TP3.
FM Band Pass Signal Generator to aerial input ANT1
Ue <; f
Oscilloscope to Loudspeaker.

75kHz Oscillator

Test equipment: Frequency Counter
Adjustment
75kHz Oscillator Frequenzy Counter to testpoint TP4.

4.332MHz-Oscillator

Test equipment: Frequency Counter
Adjustment
4.332MHz Oscillator Frequenzy Counter to testpoint TP6.

Radio PCB

GRUNDIG Service
Preparation
= 1kHz;
mod
Preparation
Preparation
Abgleichvorschriften / Adjustment Procedures
Adjustment Procedure
Adjust (bend) with L2 for 1.70V
Adjust alternating with L1 (bend) at 90MHz and with TC1
at 106MHz to AF Maximum.
Adjustment Procedure
±
Adjust with TC2 for 75kHz
Adjustment Procedure
Adjust with TC3 for 4.332MHz

Display PCB

±
0.05V.
10Hz.
±
10Hz.
2 - 2