XW-HT1
56
1
2
3
4
1
2
3
4
C
D
F
A
B
E
(1) In a case where the power is not turned on (the POWER LED does not light)
RX side
No power
(The POWER LED does not light.)
Check that the circuits
are not short-circuited.
Is the
FFC correctly
inserted?
Is the fuse blown?
Is the
protection circuit in
IC11 and/or IC14
broken?
Insert the FFC
correctly.
Replace the F1 fuse.
No
No
No
No
No
No
Yes
Is the
POWER LED lit?
Yes
Yes
Is the POWER
LED lit?
Yes
Yes
Is the POWER
LED lit?
Yes
Yes
Replace IC11 and/or
IC14.
Yes
Inspection completed.
As the circuit for +9 V is most
likely to have been short-
circuited, check the circuits
around IC15.
RX side
(2) In a case where no sound is output
No sound
Is TUNED lit?
Is the relay on?
Check the circuits around Q3455
and Q3454.
No
Check the electric potentials at
each point of the module.
No
Yes
Yes
Replace IC12
and IC13.
Is +B voltage active?
No
Yes
Summary of Contents for XW-HT1
Page 35: ...XW HT1 35 5 6 7 8 5 6 7 8 C D F A B E H 4 4 H 2 4 H 2 4 ...
Page 47: ...XW HT1 47 5 6 7 8 5 6 7 8 C D F A B E SIDE B SIDE B G G TX MODULE G H10 H2 U23 ...
Page 49: ...XW HT1 49 5 6 7 8 5 6 7 8 C D F A B E SIDE B SIDE B H H RX MODULE H CN3701 C H3 ...
Page 72: ...XW HT1 72 1 2 3 4 1 2 3 4 C D F A B E NJU26150 DSP ASSY IC1301 DSP IC Pin Function ...
