CX5200 Field Service Manual
87
Audio Troubleshooting
O
Is there a 4.5MHz signal
on the emitter of Q4
?
With audio test going is
there a series of changing
square waves on U7
Pin 37?
Is the approximate same
series of signals visible
between C15 & R41?
Is there a 4.5MHz 1-2V
p-p signal on the side of
C10 connected to Q4?
Defective:
1)
C10
2)
R33
Yes
No
F
Yes
Yes
Yes
Yes
No
Yes
Repair
or
Replace
Swapout:
1) U7
2) U2
Can L1 be
adjusted to
give a 4.5MHz
reading?
Is there +5VDC
on the collector
of Q4?
Adjust
Replace:
1) L1
2) L2
Replace:
1) C13
2) C14
3) Q4
4) CR8
5) CR7
Does audio
work?
No
No
No
No
Defective C15
or open U7
Pin 37 & C15.
Open
C10 to Q4.
No
Yes
Summary of Contents for CX 5200
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Page 17: ...CX5200 Field Service Manual 17 Figure 2 1 4 Port 5200 CA018087 Motherboard Silkscreen ...
Page 18: ...CX5200 Field Service Manual 18 Figure 2 2 4 Port 5200 CA018087 Motherboard Schematic Part 1 ...
Page 19: ...CX5200 Field Service Manual 19 Figure 2 3 4 Port 5200 CA018087 Motherboard Schematic Part 3 ...
Page 20: ...CX5200 Field Service Manual 20 Figure 2 4 4 Port 5200 CA018087 Motherboard Schematic Part 3 ...
Page 21: ...CX5200 Field Service Manual 21 Figure 2 5 4 Port 5200 CA020108 Motherboard Silkscreen ...
Page 22: ...CX5200 Field Service Manual 22 Figure 2 6 4 Port 5200 CA020108 Motherboard Schematic Part1 ...
Page 23: ...CX5200 Field Service Manual 23 Figure 2 7 4 Port 5200 CA020108 Motherboard Schematic Part2 ...
Page 24: ...CX5200 Field Service Manual 24 Figure 2 8 4 Port 5200 CA020108 Motherboard Schematic Part 3 ...
Page 25: ...CX5200 Field Service Manual 25 Figure 2 9 2 Port 5200 CA021374 Motherboard Silkscreen ...
Page 26: ...CX5200 Field Service Manual 26 Figure 2 10 2 Port 5200 CA021374 Motherboard Schematic Part 1 ...
Page 27: ...CX5200 Field Service Manual 27 Figure 2 11 2 Port 5200 CA021374 Motherboard Schematic Part 2 ...
Page 28: ...CX5200 Field Service Manual 28 Figure 2 12 2 Port 5200 CA021374 Motherboard Schematic Part 3 ...
Page 29: ...CX5200 Field Service Manual 29 Figure 2 13 Trakball Silkscreen ...
Page 30: ...CX5200 Field Service Manual 30 Figure 2 14 Trakball Schematic Part1 ...
Page 31: ...CX5200 Field Service Manual 31 Figure 2 15 Trakball Schematic Part 2 ...
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