57
1
3
4
1
3
4
C
D
F
A
B
E
TS7, BCT-1710, BCT-1720, BCT-1730
((C))
(from page 56)
[INDIVIDUAL MODEM REPAIRS]
↓
[Replace IC6103 (Photocoupler)
and L6101,L6102 (Chip Inductor).]
↓
[Confirm RF correct incoming signal with a good IRD.]
[Analog Video, Analog Audio, Tuner Receiving Checks]
[Replace MAIN ASSY.]
NG
[Replace D6101 (Zener Diode)
and T6101 (Line Transfer).]
NG
[Replace MODEM ASSY.]
NG
[Replace IC6006 (AMC2442 MODEM Controller).]
[Replace IC6005 (73K324BL MODEM/AFE IC).]
NG
NG
[End]
OK
[End]
OK
<Picture, sound?>
[Connect the PC and setup "main.exe" environment.]
[End]
OK
NG
OK
OK
OK
<Execute "No.7 : Tuner Check" operation.>
[End]
[End]
OK
[End]
OK
[The channel decoder is faulty.]
NG
((D))
(to page 58)
[The Analog Video is faulty.]
NG
((E))
(to page 60)
[The Analog Audio is faulty.]
NG
((F))
(to page 61)
[End]
OK
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