47
KRP-M01
5
6
7
8
5
6
7
8
A
B
C
D
E
F
Is a Packet Error generated?
An error may be generated in the B.E. block
(after the demodulation TS is output).
Replace the MAI
N
BLOCK Assy.
N
o
N
o
[Checking of the reception environment]
• Is the C/
N
value affected by a wireless LA
N
or other ambient electromagnetic waves?
•
W
hen the dressing of the RF cable is modified, does the C/
N
value fluctuate?
•
W
hen the RF cable is shortened as much as possible, is the symptom cleared?
N
o
[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?
•
W
hen a booster or attenuator is added, is the symptom cleared?
• Is the RF cable defective?
•
W
hen the dressing of the RF cable is modified, does the level fluctuate?
N
o
If IF_AGC level and C/
N
value are
high enough, block noise is not
usually generated.
Yes
=> DT
V
2
Replace the MAI
N
BLOCK Assy
and check if the symptom persists.
Yes
Is the input level high enough?
(IF_AGC check)
Is the C/
N
value high enough?
(MER check)
Yes
Yes
Is a Packet error generated?
(PER check)
An error may be generated in the B.E. block
(after the demodulation TS is output).
Replace the MAI
N
BLOCK Assy.
N
o
N
o
[Checking of the reception environment]
• Is the C/
N
value affected by a wireless LA
N
or other ambient electromagnetic waves?
•
W
hen the dressing of the RF cable is modified, does the C/
N
value fluctuate?
•
W
hen the RF cable is shortened as much as possible, is the symptom cleared?
N
o
[Checking of the reception environment]
• Is the signal loss large because multiple distributors are used?
•
W
hen a booster or attenuator is added, is the symptom cleared?
• Is the RF cable defective?
•
W
hen the dressing of the RF cable is modified, does the level fluctuate?
N
o
If IF_AGC level and C/
N
value are
high enough, block noise is not
usually generated.
Yes
Replace the MAI
N
BLOCK Assy
and check if the symptom persists.
Yes
Is the input level high enough?
(RF Level check)
Is the C/
N
value high enough?
(C/
N
check)
Yes
Yes
Block noise is generated.
Di
g
ital Terrestrial Broadcast
Di
g
ital satellite Broadcast
Summary of Contents for krp-m01
Page 8: ...8 KRP M01 1 2 3 4 A B C D E F 1 2 3 4 2 3 PANEL FACILITIES ...
Page 9: ...9 KRP M01 5 6 7 8 5 6 7 8 A B C D E F Remote Control Unit ...
Page 14: ...14 KRP M01 1 2 3 4 A B C D E F 1 2 3 4 4 BLOCK DIAGRAM 4 1 OVERALL WIRING DIAGRAM ...
