Inhaltsverzeichnis
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Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
NF-Teil / AF Part
IC 201 TA8227P
(LOW FREQUENCY POWER AMPLIFIER)
AT POWER ON CONDITION
PIN NO.
V-OUT
1
15.17
2
7.56
3
14.55
4
0.00
5
0.55
6
0.00
IC 401 AN7312
RECORD/PLAYBACK AMPLIFIER
AT CASSETTE PLAY CONDITION
PIN NO.
V-OUT
1
0.00
2
0.00
3
0.00
4
3.24
5
1.39
6
1.27
7
0.00
CD LED BOARD
REC
REC
0V (TAPE PLAY)
+1.25V (TAPE REC)
REC
0V (TAPE PLAY)
+0.9V (TAPE REC)
REC
3 - 12
RR 640 CD / RR 670 CD
IC 241 TC9235P
ELECTRONIC VOLUME
AT CD CONDITION
FUNCTION BOARD
PIN NO.
V-OUT
PIN NO.
V-OUT
(ONLY RR 640 CD)
7
0.00
1
0.00
Page 3 - 17
8
0.55
2
3.57
9
8.00
3
3.56
10
14.55
4
3.57
11
7.50
5
3.57
12
15.30
6
7.10
7
7.11
8
0.00
9
7.11
10
7.62
11
0.90
PIN NO.
V-OUT
12
3.56
8
0.00
13
3.56
9
1.27
14
3.55
10
1.39
15
3.56
11
3.24
16
7.13
KEYBOARD
12
0.00
CN604
13
6.32
Page 3 - 20 / 21
14
6.35
REC
0V (TAPE PLAY)
+3.28V (TAPE REC)
REC
REC
IC BLOCK
DIAGRAM
to Page 3 - 25
0V (TAPE PLAY)
+6.43V (TAPE REC)
0V (RADIO)
+8.6V (TAPE PLAY)
REC
0V (TAPE PLAY)
+3.19V (TAPE REC)
0V (TAPE PLAY)
+2.79V (TAPE REC)
GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
CN301
0V
0V (RADIO)
+0.5V (CD PAUSE)
0V
FUNCTION BOARD
CN301
(ONLY RR 670 CD)
Page 3 - 19
VOLUME BOARD
0V
(ONLY RR 670 CD)
Page 3 - 15
0V (TAPE PLAY)
+0.64V (TAPE REC)
0V
0V
FUNCTION
BOARD
CN304
Page 3 - 16 / 18
3 - 13
+14.87V (RADIO)
+14.18V
(RADIO)
+14.85V
(RADIO)
IC BLOCK
DIAGRAM
to Page
3 - 25
+5.62V (RADIO)
0V
(RADIO)
+7.9V (RADIO)
+7.8V (CASS PLAY)
+1.98V
+13.25V (RADIO)
(RADIO)
+13V (CASS PLAY)
+1.75V
+1.15V
(RADIO)
(RADIO)
+3.2V
(RADIO)
0V
(RADIO)
IC BLOCK
DIAGRAM
to Page
3 - 25
CN802
RR 640 CD / RR 670 CD
GRUNDIG Service
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Inhaltsverzeichnis
