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5
=> DTV 2
Block noise is generated.
Digital Terrestrial Broadcast
Is a Packet Error generated?
Yes
Replace the MAIN BLOCK Assy
and check if the symptom persists.
Yes
Is the input level high enough?
(IF_AGC check)
Yes
Is the C/N value high enough?
(MER check)
Yes
If IF_AGC level and C/N value are
high enough, block noise is not
usually generated.
Digital satellite Broadcast
Is a Packet error generated?
(PER check)
Yes
Replace the MAIN BLOCK Assy
and check if the symptom persists.
Yes
Is the input level high enough?
(RF Level check)
Yes
Is the C/N value high enough?
(C/N check)
Yes
If IF_AGC level and C/N value are
high enough, block noise is not
usually generated.
5
6
No
An error may be generated in the B.E. block
(after the demodulation TS is output).
No
Replace the MAIN BLOCK Assy.
No
[Checking of the reception environment]
• Does the input level become high when the antenna is reoriented?
• Is the signal loss large because multiple distributors are used?
• When a booster or attenuator is added, is the symptom cleared?
• Is the RF cable defective?
• When the dressing of the RF cable is modified, does the level fluctuate?
No
[Checking of the reception environment]
• Is the C/N value affected by a wireless LAN or other ambient electromagnetic waves?
• When the dressing of the RF cable is modified, does the C/N value fluctuate?
• When the RF cable is shortened as much as possible, is the symptom cleared?
No
An error may be generated in the B.E. block
(after the demodulation TS is output).
No
Replace the MAIN BLOCK Assy.
No
[Checking of the reception environment]
• Is the signal loss large because multiple distributors are used?
• When a booster or attenuator is added, is the symptom cleared?
• Is the RF cable defective?
• When the dressing of the RF cable is modified, does the level fluctuate?
No
[Checking of the reception environment]
• Is the C/N value affected by a wireless LAN or other ambient electromagnetic waves?
• When the dressing of the RF cable is modified, does the C/N value fluctuate?
• When the RF cable is shortened as much as possible, is the symptom cleared?
KRP-M01
6
7
7
8
A
B
C
D
E
F
47
8

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