Grundig RR 710 CD - Page 16

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs RR 710 CD / RR 750 CD Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs RR 710 CD / RR 750 CD
GRUNDIG Service GRUNDIG Service3 - 3 3 - 4
Tuner
51 2 3 4 6 7 8 9
RF
AMP
MIX
BUFFER
AMP
OSC
BIAS
VOLTAGE
REGULATOR
*
TA 7358 A
GND VCCOSCOSCRF
OUT
MIX
IN
MIX
OUT
BIASRF
IN
24 23 22 21 20 19 18 17 16 15 14 13
121110987654321
FM
IF
FM
Dec.
AM
IF
ECL
AM
Mix.
AM
Det.
SSC Osc.
AGC Switch
Tun.
LED
Stereo
LED
ECL
Level
Switch
HYS
AM/FM
Mono Sw.
VCO
Decoder
FM IF In
Mix. Out
Bypass
AM IF In
Quad
Detect Out
MPX In
LPF1
LPF2
VCO
L ch. Out
R ch. Out
Ground
Stereo LED
Tun. LED
IF Out
IF Req.
AGC
AM Low Cut
Vcc
Osc. Out
AM Osc.
FM IF Divider
AF IF In
TA 8132 AN
TA8132AN
TA7358AP
VOLTAGES IC302 TA8132AN
PIN 123456789101112
V FM 3.4 3.4 3.5 3.5 3.5 2.8 0.9 0 3.5 0 0 0
V MW 4.4 4.4 4.5 4.1 4.5 4.0 0.2 0 4.5 0.2 5.5 0
VOLTAGES IC301 TA7358AP
PIN 123456789
V FM 0.7 1.5 2.7 1.5 0 3.0 1.8 2.8 2.8 2.6
PIN 13 14 15 16 17 18 19 20 21 22 23 24
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
GLEICHSPANNUNGEN GEGEN GND i GEMESSEN.
DC-VOLTAGES MEASURED AGAINST GND i.
V = FM (V) = MW
Tuner Board
Bestückungsseite / Component Side
B C E
2.1V
(0.4V)
0.7V
(0.4V)
0.1V
(0V)
3.5V
(0V)
3.5V
(4.5V)
4.1V
(0.5V)
2.6V
(4.2V)
3.4V
(4.5V)
2.2V
(4.4V)
4.3V
(3.8V)
0V
(4.5V)
4.3V
(3.9V)
0V
(0V)
3.5V
(0.4V)
0V
(0V)
0V
(0V)
3.5V
(4.5V)
2.8V
(3.8V)
3.3V
(4.4V)
0V
(0V)
0V
(0V)
0V
(0V)
0V
(0V)
0V
(0V)
0.6V
(0.6V)
0V
(0V)
0V
(0V)
0V
(0V)
0V
(0V)
0V
(0V)
0V (0V)
0.7V (0.7V)
TO CN202
CONTROL
BOARD
PAGE 3-12
TO CN201
CONTROL BOARD
PAGE 3-12
TO CN405
TONE CONTROL
BOARD
PAGE 3-13
TO CN501
BEAT CUT
BOARD
PAGE 3-5