Pioneer DEH-P980BT - Faceplate stuck down

PedroDaGr8 · 11th July 2011, 09:38 PM

Hey, I have a Pioneer DEH-P980BT headunit. One of the ones with the motorized faceplate that swivels down to insert the CD then press a button and it swivels closed. Well, the faceplate is stuck in the open position, when the close/open button is pressed (or when the player is turned off or on) it moves up around 2-5mm stops and then after around 4-5sec returns back to the fully open position. Not sure what could be causing this, it just started out of the blue this morning.

Perry Babin · 11th July 2011, 09:50 PM

Measure the DC voltage across the motor for the face mechanism. Does the voltage drop to zero the instant that is stops moving up?

Be VERY careful not to short the probes between the terminals on the motor and the motor housing or the head unit case. If you do, you'll blow the drive circuit.

PedroDaGr8 · 12th July 2011, 03:57 AM

Well I fixed it. When doing your test Perry, I noticed as it rotated something was stuck in the teeth of one of the gears. Turns out one of the gears broke a tooth and that was sticking in the gear of its mate blocking things. I couldn't see it though until it rotated into position. I removed the piece of plastic and everything now works fine. Thanks!

11th July 2011, 09:38 PM	#1
PedroDaGr8 diyAudio Member Join Date: Dec 2009 Location: San Diego, CA	Pioneer DEH-P980BT - Faceplate stuck down Hey, I have a Pioneer DEH-P980BT headunit. One of the ones with the motorized faceplate that swivels down to insert the CD then press a button and it swivels closed. Well, the faceplate is stuck in the open position, when the close/open button is pressed (or when the player is turned off or on) it moves up around 2-5mm stops and then after around 4-5sec returns back to the fully open position. Not sure what could be causing this, it just started out of the blue this morning.

11th July 2011, 09:50 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Measure the DC voltage across the motor for the face mechanism. Does the voltage drop to zero the instant that is stops moving up? Be VERY careful not to short the probes between the terminals on the motor and the motor housing or the head unit case. If you do, you'll blow the drive circuit. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

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12th July 2011, 03:57 AM	#3
PedroDaGr8 diyAudio Member Join Date: Dec 2009 Location: San Diego, CA	Well I fixed it. When doing your test Perry, I noticed as it rotated something was stuck in the teeth of one of the gears. Turns out one of the gears broke a tooth and that was sticking in the gear of its mate blocking things. I couldn't see it though until it rotated into position. I removed the piece of plastic and everything now works fine. Thanks!

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