Tuner - Grundig Rr 710 Cd Serviceanleitung

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs

Tuner

0V
(0V)
0V
(0V)
0.7V (0.7V)
B C E
3 - 3
RR 710 CD / RR 750 CD
(0.4V)
0.7V
(0.4V)
3.5V
3.5V
(0V)
(4.5V)
4.1V
(0.5V)
0V
(0V)
0V
0.6V (0V)
(0.6V)
0V
0V
(0V)
(0V)
0V 0V
(0V)
(0V)
0V
(0V)
0V
(0V)
0V (0V)
3.5V
3.3V
(4.4V) (4.5V)
2.8V
(3.8V)
GLEICHSPANNUNGEN GEGEN GND i GEMESSEN.
DC-VOLTAGES MEASURED AGAINST GND i.
V = FM (V) = MW
VOLTAGES IC301 TA7358AP
PIN 1 2 3 4 5
V FM 0.7 1.5 2.7 1.5 0
VOLTAGES IC302 TA8132AN
PIN 1 2 3 4 5
V FM 3.4 3.4 3.5 3.5 3.5 2.8 0.9
V MW 4.4 4.4 4.5 4.1 4.5 4.0 0.2
PIN 13 14 15 16 17
V FM 1.0 1.0 2.7 2.3 2.6 0.6 1.7 2.7 3.5 3.3 3.5 3.8
V MW 1.0 1.0 4.0 4.5 4.2 0.6 1.3 4.0 4.5 3.8 4.5 4.5
TA7358AP
TA 7358 A
BUFFER
RF
MIX
AMP
*
1 2 3 4 5
RF BIAS RF MIX GND MIX
IN OUT IN OUT
GRUNDIG Service
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
2.1V
0.1V
(0V)
6 7 8 9
3.0 1.8 2.8 2.8 2.6
TA8132AN
6 7 8 9 10 11 12
0 3.5 0 0 0
0 4.5 0.2 5.5 0
18 19 20 21 22 23 24
OSC
AMP
VOLTAGE
BIAS
REGULATOR
6 7 8 9
OSC OSC VCC
3 - 4
3.5V
(0.4V)
3.4V
(4.5V)
2.6V
(4.2V) TO CN501
BEAT CUT
4.3V
4.3V
BOARD
(3.8V)
(3.9V)
PAGE 3-5
2.2V
(4.4V)
0V
(4.5V)
0V
(0V)
0V
(0V)
0V
(0V)
TO CN405
TONE CONTROL
BOARD
PAGE 3-13
TO CN201
CONTROL BOARD
PAGE 3-12
TO CN202
CONTROL
BOARD
PAGE 3-12
24 23 22 21 20 19 18 17 16 15 14 13
FM
FM Dec.
IF
VCO Decoder
ECL
AM
IF
AM/FM
Mono Sw.
ECL HYS
AM
Mix.
AM Level
Det. Switch
TA 8132 AN
Tun. Stereo
SSC Osc. AGC Switch
LED LED
1 2 3 4 5 6 7 8 9 10 11 12
RR 710 CD / RR 750 CD
GRUNDIG Service