PIONEER XWHTP550
Manual de Servicio

1

2

3

4

2. Receiver (Wireless SP) side
(1) In a case where the power is not turned on (the POWER LED does not light)
A

No power (The POWER LED does not light.)

Insert the FFC correctly.

No

Is the FFC (*1) correctly inserted?

(*1) : FFC between CN5901 (RX Assy) and CN5902 (LED Assy)

Yes
B

Is the POWER LED lit?

No

Yes

Is the fuse FU1 blown?

No

Is the IC11 and/or IC14 in MAIN Assy broken? Yes Replace IC11 and/or IC14.

No

Check that the circuits are not short-circuited. As the circuit for +9 V is most likely to have been shortcircuited, check the circuits around IC15.

Yes Replace the FU1 fuse.
C

Yes

Yes

Is the POWER LED lit?

No

Is the POWER LED lit?

No

Yes Inspection completed.

Yes

(2) In a case where no sound is output
D

No sound

Check the Transmitter side.

No

Is TUNED LED lit? Yes

E

Check the "SP PROTECT"circuits around Q3455 and Q3454.

No

Is the relay on?

Yes

Replace IC12 and IC13.

No

Is +B voltage active?

Yes (A)
F

(B)

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XW-HTP550
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