Grundig GV 440 NIC Servicehandbuch Seite 136

Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Oszillogramme / Oscillograms
PB EE
0V
0V
A: DC, 50V/Div, 2us/Div A: DC, 2 V/Div, 2us/Div
7035 Drain IC 7005 Pin 5
1 2
WIND THR
0V 0V
A: DC, 1V/Div, 2ms/Div A: DC, 1 V/Div, 5ms/Div
IC 7050 Pin 7/8 Connector 1502, 6 FTA (Threading)
5 6
PB PB
3.8V
0V
A: AC, 500mV/Div, 200us/Div A: DC, 1 V/Div, 10us/Div
Connector 1502, 15, FG IC 7050 Pin 17
9 10
REC PB
0V 0V
A: DC, 1 V/Div, 10ms/Div A: DC, 1 V/Div, 10ms/Div
Connector 1503, 7 CTL IC 7050 Pin 1
13 14
THR REC
0V 0V
A: DC, 1 V/Div, 5ms/Div A: DC, 1 V/Div, 5ms/Div
IC 7050 Pin 6 FTAD
IC 7050 Pin 12
18 19
PB REC
0V
0V
A: DC, 1 V/Div, 100us/Div A: DC, 200mV/Div, 10us/Div
IC 7050 Pin 9 Modulator Pin 1
22 25
REC REC
3.5V
0V
A: AC, 500mV/Div, 500us/Div A: DC, 500mV/Div, 200us/Div
IC 7320 Pin 30 IC 7790 Pin 10
26 27
4 - 44
GV44..., GV45..., GV46...
EE EE
0V
1V
A: DC, 200mV/Div, 2us/Div
A: AC, 200mV/Div, 2us/Div
IC 7005 Pin 8
IC 7005 Pin 2
4
3
WIND PB
0V
0V
A: DC, 1 V/Div, 2ms/Div A: DC, 1 V/Div, 5ms/Div
Connector 1502, 5/8 WT2/WT1 Connector 1502, 4 LED
7 8
PB PB
0V 0V
A: DC, 1 V/Div, 2ms/Div A: DC, 1 V/Div, 10us/Div
Connector 1501, 1 PG/FG IC 7050 Pin 18
11 12
PB PB
0V 0V
A: DC, 1 V/Div, 500us/Div A: DC, 1 V/Div, 5ms/Div
IC 7050 Pin 10 IC 7050 Pin 13 HI-B
15 17
PB PB
0V 0V
A: DC, 1 V/Div, 5ms/Div A: DC, 1 V/Div, 10ms/Div
IC 7015 Pin 14 HITON IC 7050 Pin 11/16 CTLOUT
20 21
REC PB
3.8V
0V
A: DC, 200mV/Div, 200us/Div A: AC, 500mV/Div, 500us/Div
Modulator Pin 3 IC 7320 Pin 30
26 26
REC REC
0V 0V
A: DC, 500mV/Div, 200us/Div A: DC, 500mV/Div, 10us/Div
IC 7790 Pin 9 IC 7910 Pin 12
28 29
GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
REC TXT
3V
A: AC, 500mV/Div, 200us/Div A: AC, 200mV/Div, 10us/Div
IC 7780 Pin 11/12 IC 7150 Pin 36
30 34
TXT REC
0V
A: DC, 500mV/Div, 10us/Div A: DC, 1 V/Div, 50us/Div
IC 7150 Pin 40 IC 7190 Pin 7
37 38
PB REC
2.3V
A: AC, 100mV/Div, 10us/Div A: AC, 100mV/Div, 10us/Div
IC 7510 Pin 42 IC 7510 Pin 42
41 41
PB REC
3V
A: AC, 50mV/Div, 10us/Div A: AC, 100mV/Div, 10us/Div
IC 7510 Pin 10 IC 7510 Pin 10
44 44
PB
PB
3.3V
A: AC, 100mV/Div, 10us/Div
A: AC, 200mV/Div, 10us/Div
IC 7510 Pin 35 IC 7625 Pin 6
47 48
PB PB
1.2V
A: AC, 200mV/Div, 20us/Div A: AC, 50mV/Div, 20us/Div
CONNECTOR 1506, 11 UNC-FM IC 7690 Pin 1
51 52
PB PB
2V
A: AC, 50mV/Div, 20us/Div A: DC, 500mV/Div, 10us/Div
IC 7510 Pin 22 IC 7510 Pin 30
55 56
4 - 44
GV44..., GV45..., GV46...
TXT
0V
1.8V
A: DC, 500mV/Div, 10us/Div A: AC, 500mV/Div, 10us/Div
IC 7190 Pin 20
IC 7150 Pin 44/45/47
35 36
REC
3V
0V
A: AC, 200mV/Div, 10us/Div A: AC, 100mV/Div, 10us/Div
IC 7510 Pin 33 IC 7510 Pin 41
39 40
REC
2.5V
2V
A: AC, 200mV/Div, 10us/Div A: AC, 500mV/Div, 10us/Div
IC 7510 Pin 43 IC 7510 Pin 36
42 43
REC
3V 0.5V
A: AC, 100mV/Div, 10us/Div
A: AC, 100mV/Div, 10us/Div
Connector 1506, 2 FM T.T. Connector 1506, 9 CON.FM
45 46
PB
2.5V
1.8V
A: AC, 50mV/Div, 50ns/Div A: AC, 100mV/Div, 10us/Div
IC 7625 Pin 7 IC 7510 Pin 4
49 50
PB
2.1V 1.8V
A: AC, 50mV/Div, 20us/Div A: AC, 200mV/Div, 20us/Div
IC 7690 Pin 3 IC 7510 Pin 20
53 54
PB
2.4V
0V
A: AC, 100mV/Div, 100ns/Div A: DC, 2 V/Div, 20us/Div
IC 7690 Pin 5 IC 7510 Pin 27
57 58
TXT
1.5V
PB
3V
REC
3V
PB
1.4V
PB
2V
PB
2.3V
PB
0V
GRUNDIG Service