High-Pass Filter; Low-Pass Filter - Grundig PA 5 - Turnit Serviceanleitung

Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
Schaltpläne Klangeinheit: Kontrollplatte, Netzschalterplatte, Netzfilterplatte, AC-Ausgangsplatte, Potentiometerplatte, Audio-Verbindungsplatten
Circuit Diagrams Sound Unit: Control Board, Power Switch Board, AC Filter Board, AC Outlet Board, Potentiometer Board, Audio Plug Boards
AUDIO PLUG BOARD 2 AUDIO PLUG BOARD 1
5
4 6
1
3 7
2 8
A D
POTENTIOMETER BOARD
R953 R953
1K C916
10k 10k +
R1007
10u/50V
A
1K
C917
+
P950
R1008
10u/50V
P915
A A
A
+12V
8
0V
LM833
- 10u/50V
2
IC900/A
+
0V
1
0V
C918
+
3
A
10u/50V
2K2
+
R951
C919
R1016
0V
LM833
-
4K7
6
0V
IC900/B
0V 7
+
5
4
A A
P910 -12V
1
BR945
2
3 BR993
RF 4
+12VRF
RX-Bd 5
6 BR994
7 FIELDSTRENGHT A
D926
TUNEMUT
BAT42
D927
BAT42
3 - 35
5
4 6
1
3 7
2 8
+12VR
T950
BC558
CONT_ON/OFF
2u2/100V
R1005 T951
BC546 2u2/100V
10K
MUTE-SOUND
D D
R988
100K
STDBY-SOUND R989 R990
100K 100K
A
IC901
HEF4053B
12
Y0A
0V
14
ZA
13
Y1A
0V
0V
R_DIRECT
2
Y0B
A 0V
R
15
ZB
1
Y1B 0V
0V
L_DIRECT 5
Y0C
0V A
4 L
ZC
3
Y1C
0V
0V
DECODER
A A
R960
-8V
11 7
SA VEE
LOGIC
10 10K
SB
LEVEL
9 CONVERSION 16
SC VDD
+8V
A
R948 E VSS
R959
6 8
100
1-RF 10K
0-DIRECT
A
A
A
R949
100
+12V
P1010 P1001
A CONT_ON/OFF 1
2
BC546_B
D
T921
A
A
PA 5 - Turnit Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
+12V
A
-12V
+12V
R969
120K R971
C926
8
R967
+ 0V
LM833 2K7
- C945 C930
C932
0V
6
100K F F F
IC902/A
C927 R972
7
+
+ 0u47/5% 0u47/5% 0u47/5%
5
100K
A A

HIGH-PASS FILTER

ADDER
0V
R968
LM833
-
R983
6
4K7
IC903/B
C935
C939 C933
7
F F F 0V 3K6
+
5
0u1/10% 0u1/10% 0u1/10% 4
-12V
A A
HIGH-PASS FILTER +12V
0V
8
R980
LM833
-
R981
2
4K7
IC903/A
C937 C941
C931
1
0V
F F F 3K6
+
3
0u1/10% 0u1/10% 0u1/10%
A
A A
-12V
HIGH-PASS FILTER
CONTROL BOARD
+12V
POWER SWITCH BOARD
1
C943
2
D1002 D1001
1N4148 1N4148
SI902
3n3/20%
8 1 T800mA
P980
BN
S900
BL
59400-310.00
P1003
6 3
3n3/20% 3n3/20%
C1001 5 4 C1002
8312-003-229
REL1001
P1004 P1005
BL
BN
P1006
GRUNDIG Service 3 - 36
-12V
C940
4
F
LM833
0V -
2
LM833 68n/10%
- IC904
R975 R979
2 R977 1
0V
IC902/B +
1 3
0V 18K 18K 18K
+ 8
3
4
+12V
A
-12V
A A

LOW-PASS FILTER

R984
10K
4
0V
LM833
-
6 R
0V
IC905/B
7
+
5 L
4
A
-12V
R982
10K
+12V
8
0V
LM833
-
59430-059.01
2
0V
IC905/A
1
+
3
O
110 C
P915
BN
230 VAC
BL
SI901
BN
T2A
BL
P912
POWER TRANSFORMER
BN
BN
MAINS
230V
50Hz/60Hz
BL
BL
P919
AC FILTER BOARD
P1007
BN
BL
AC OUTLET BOARD
PA 5 - Turnit
0V
P916
1 TO P108.
BASS
2
p. 3-39
AUDIO BOARD
BR995
A
TO
P108
3
TWEETER
BR996
2 p. 3-39
AUDIO BOARD
1
P917
A
TO
P900
15.0 VAC
CROSSOVER
p. 3-37
24.5 VAC
TO
P110.
AUDIO BASS
p. 3-40
BOARD
24.5 VAC
24.5 VAC
TO
P110
AUDIO
MIDDLE
p. 3-40
TREBLE
BOARD
24.5 VAC
21/01/98
GRUNDIG Service