CF 21
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
CF 21
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
GRUNDIG Service
3 - 5
GRUNDIG Service
3 - 6
TP
D4
TP
D3
KOPFSTROM
HEAD CURRENT L
KOPFSTROM
HEAD CURRENT R
BIAS
BIAS
L1
IC105
µ
PC1297CA (HX-PRO)
µ
PC 1297 CA
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
ABSO
DET
PEAK
DET
ABSO
DET
PEAK
DET
VCA
VCA
PRE
DRIVER
V
CC
V
R2
V
IN(R)2
PH
2
C
IN2
C
OUT2
V
OUT21
V
OUT22
V
IN(0)
V
ST
V
R1
V
IN(R)1
PH
1
C
IN1
C
OUT1
V
OUT11
V
OUT12
GND
VOLTAGE
REGULATOR
THERMAL
PROTECTION
COMP
COMP
GEMESSEN BEI AUFNAHME OHNE SIGNAL MIT CR-CASSETTE
MEASURED DURING RECORDING OF A CR CASSETTE WITHOUT SIGNAL
(...V) =
PAGE 3-9
PAGE 3-9
(4.4V)
(2.6V)
(10.5V)
(10.5V)
(10.5V)
(3.2V)
(2.7V)
(3.2V)
(1.7V)
(4.4V)
(2.6V)
(10.5V)
(10.5V)
(3.2V)
(2.7V)
(3.2V)
(4.4V)
(5V)
(0V)
(0V)
(5.9V)
(5.9V)
(0.2V)
(0.1V)
(5.9V)
(6.5V)
(0V)
(11.9V)
(11.2V)
(0V)
(0.7V)
(1
1.1V)
(6.5V)
11.6V
2.5V
2V
0.7V
6.2V
0.7V
11V
11.6V
6.2V
11V
0.7V
0.7V
2.5V
2V
