[TechAssist] Re: 3rd & Final Post Need a Copy of a SchematicPioneer Model DEH P47DH CAR DECK
- From: Albert Walfield <albertwalfield@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 08 May 2003 15:44:41 -0300
Tom shorted Q565 E-C and got 9 volt on pin 14 of CN651.Checked voltage on
pin 13 & 14 with faceplate removed there still no voltage on those pins.
Is there any voltages on pin 20 of IC 601 and Q657
that can be checked?
What are the pioneer part # for Q657 transistor & IC601 so I can get a price
from Argo Electronics on parts needed to give costumer an estimate .
thanks
Albert Walfield
Albert Walfield's Electronics
RR#3
Bridgewater
Nova Scotia
CANADA
B4V 2W2
Fax# 902 543-9831
----- Original Message -----
From: "Thomas Sherman" <bayside.electronics@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, May 08, 2003 2:34 PM
Subject: [TechAssist] Re: 3rd & Final Post Need a Copy of a Schematic
Pioneer Model DEH P47DH CAR DECK
> Q656 is simply a switch which is controlled by Q657, which is controlled
> by the system micro, IC601, pin 20. If you short Q656 E-C, you should
> get 9 volts on pin 14 of CN651. If you do, then the problem is likely
> Q657 or IC601. By the way, do you have voltage on pins 13 & 14 with the
> faceplate removed? If so there may be a problem on the faceplate PCB.
>
> Tom @ Bayside Electronics
>
> Tom Sherman
> Bayside Electronics
> 305 Highway 303, Unit 4
> Digby, Nova Scotia
> Canada B0V 1A0
> Phone/Fax (902) 245-5375
> bayside.electronics@xxxxxxxxxxxxxxx
>
>
>
> Albert Walfield wrote:
>
> >Have B+ on backup line
> >Proper voltage on collector and emitter Q653, voltage on Q656 emitter to
> >ground 13.59 volts base to ground 13.66 volts
> >collector to ground 0.00 volts. R575 33ohm resistor checked good no
voltage
> >at pin 13 at front panel connector & no voltage on pin 14 with front
panel
> >connected.Q565 checks ok
> > At emitter of Q991 voltage was 8.5 volts.
> >
> >Font panel was connected for al reading and checks.
> >
> >What can I check next
> >
> >Albert
> >
> >----- Original Message -----
> >From: "Thomas Sherman" <bayside.electronics@xxxxxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Thursday, May 08, 2003 9:52 AM
> >Subject: [TechAssist] Re: 3rd & Final Post Need a Copy of a Schematic
> >Pioneer Model DEH P47DH CAR DECK
> >
> >
> >
> >
> >>Albert, do you have B+ on the backup line? That's the yellow wire on the
> >>harness. This supplies B+ to the illumination power supply, back light
> >>power supply and the regulator circuit for the CD mechanism. Check for
> >>12-14 volts on Q653 emitter and also on the collector, also on Q656
> >>emitter and collector, and on Q991 collector. The emitter of Q991
> >>should be approx. 8.7 volts. Q656 supplies the back light through pin 13
> >>of the front panel connector, Q656 supplies illumination through R675
> >>to pin 14 of the connector at 9.1 volts, Q991 supplies 8.7 volts from
> >>the emitter to pin 1 of CN681 to the CD mech.
> >>Tom @ Bayside Electronics, Digby, NS
> >>
> >>Albert Walfield wrote:
> >>
> >>
> >>
> >>>Dead
> >>>
> >>>12 & 5 volts supplies on board. No clock,
> >>>lights, display of any kind & cd player also dead will not spin or load
> >>>
> >>>
> >or
> >
> >
> >>>eject cd has on already in it when it went dead .
> >>>Checked board for cold solder joints and for faulty componenets checked
> >>>
> >>>
> >but
> >
> >
> >>>I am at a disadvantage as I do not have a schematic for this model to
> >>>
> >>>
> >take
> >
> >
> >>>voltages in the circuits.
> >>>.
> >>>Any help would be appreciated
> >>>
> >>>thanks
> >>>Albert Walfield
> >>>
> >>>Albert Walfield's Electronics
> >>>RR#3
> >>>Bridgewater
> >>>Nova Scotia
> >>>CANADA
> >>>B4V 2W2
> >>>Fax# 902 543-9831
> >>>
> >>>
> >>>
> >>>
>
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> >>--
> >>Tom Sherman
> >>Bayside Electronics
> >>305 Highway 303, Unit 4
> >>Digby, Nova Scotia
> >>Canada B0V 1A0
> >>Phone/Fax (902) 245-5375
> >>bayside.electronics@xxxxxxxxxxxxxxx
> >>
> >>
> >>
> >>
> >>
> >>
> >>
>
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> --
> Tom Sherman
> Bayside Electronics
> 305 Highway 303, Unit 4
> Digby, Nova Scotia
> Canada B0V 1A0
> Phone/Fax (902) 245-5375
> bayside.electronics@xxxxxxxxxxxxxxx
>
>
>
>
>
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