Pioneer HTV-1 Service Manual page 54

Diagnosis Method for the AFPS Assy
(1) Remove the three screws A fixing the Heat sink.
(2) Remove the three PCB Holders and then remove the Heat
sink. (Refer to Fig.1)
(3) Remove the screw B, remove the two screws C, remove
the two push rivets D, and then remove the AFPS assy.
(Refer to Fig. 3)
(4) Short-circuit KN101 of the AFPS assy and KN1001 of the
JACK assy.
(5) Short-circuit all test terminals of the AFPS assy (SPRY,
ACRY, PWON) to GNDD.
(6) Remove C6031, enter an audio signal to the AL4 (Lch in)
terminal, and analyze the AFPS assy. (Refer to Fig. 4)
Short-circuit SPRY, ACRY and
PWON terminals to GNDD.
A
Remove C6031
Enter an audio signal
SIDE A
AFPS ASSY
Fig. 4
Push Rivet D
AFPS Assy
Fig. 3
HTV-A1
Screw C
JACK Assy
Screw B
Push Rivet D
KN1001
JACK Assy
KN101
AFPS Assy
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