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Author Topic: JDM-055 (1-982-707-31) Schematic  (Read 115392 times)

Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #30 on: May 24, 2021, 01:33:02 PM »
Doubtful. That's on some kind of data bus or something between the MCU and PMIC. It should be replaced though.
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Offline ChrisJavier

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #31 on: May 24, 2021, 01:47:48 PM »
Do you happen to know the value?
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #32 on: May 24, 2021, 01:51:59 PM »
It's in the schematic.
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Offline ChrisJavier

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #33 on: May 24, 2021, 02:23:15 PM »
Is it? I'm blind, can't seem to find it
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #34 on: May 24, 2021, 02:29:19 PM »
It's in a group of 5 there, kind of middle/leftish in the schemy, R28, R30, R38, R27, R29, or follow A17 out of the MCU.
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Offline ChrisJavier

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #35 on: May 24, 2021, 05:01:01 PM »
I thought I was going crazy or blind or both! On mobile it doesn't show the valueshttps://prnt.sc/13dcsmh. But I see now on PC that they're 100k! Thanks!
« Last Edit: May 24, 2021, 05:02:59 PM by ChrisJavier »
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Offline nsch7

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #36 on: July 03, 2021, 05:25:42 PM »
Hi, does anyone know where can I reconnect the central pin of the y axis of the left analog? I ripped off and idk how to fix it :(
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Offline wickated

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #37 on: July 04, 2021, 12:52:15 PM »
Quote from: nsch7 on July 03, 2021, 05:25:42 PM
Hi, does anyone know where can I reconnect the central pin of the y axis of the left analog? I ripped off and idk how to fix it :(
u still have remaing trace on front side of board. i tgoes directly to mcu so only jumper wire should be used.
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Offline angellara13

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #38 on: July 17, 2021, 01:19:45 AM »
alguien puede decirme cuanto vale la R31 Y R32? La tire sin querer y con que medidas podr?a remplazarla o si puedo meterle una resistencia convencional de la misma medida, ya que no logro encontrar el repuesto
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #39 on: July 17, 2021, 01:27:05 AM »
Both of those values are shown in the schematic.
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Offline ChrisJavier

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #40 on: July 26, 2021, 12:00:39 PM »


Corrosion destroyed that component (CM1?) along with the trace. Is that 2 filters in 1? I'm going to try to rebuild the trace, can I jump the trace and leave that component out?
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #41 on: July 26, 2021, 12:22:40 PM »
It's a Common Mode choke, on the D+ and D- lines for the USB. It should work alright with the 2 traces jumped straight thru, especially if wireless is how you mainly use it.
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Offline dopf

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #42 on: August 09, 2021, 10:46:24 AM »
I just accidentally ripped the battery connector  :confused:
Is there a pin/pad where I can solder the battery directly to?
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #43 on: August 09, 2021, 05:17:37 PM »
That's quite an accident, since it's on there pretty well.

Top side of the board, almost dead center of it on the left side edge is a TP spot for the B+. It is just above 2 Resistors there. For the B- side just use any ground connection in there.
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Offline dopf

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #44 on: August 10, 2021, 05:31:12 AM »
Thanks for the quick reply RDC!

Yeah, I wiggled too hard on that connector...

Sorry but I can't find B+, could you maybe highlight it in the Top view?
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Offline KillerNV

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #45 on: January 18, 2022, 07:32:01 AM »
help identify R59? C57?
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #46 on: January 18, 2022, 09:59:16 AM »
C57 is just a decoupling Cap on the 3.2v rail, it will be fine with that missing. If you want to replace it you could use anything from 1nF to 1uF there.

R59 is shown in the schematic.
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Offline KillerNV

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #47 on: January 19, 2022, 12:39:43 AM »
Quote from: RDC on January 18, 2022, 09:59:16 AM
C57 is just a decoupling Cap on the 3.2v rail, it will be fine with that missing. If you want to replace it you could use anything from 1nF to 1uF there.

R59 is shown in the schematic.

how many ohms R59?
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Offline KillerNV

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #48 on: January 20, 2022, 11:48:52 PM »
Quote from: KillerNV on January 19, 2022, 12:39:43 AM
how many ohms R59?
much needed value R59
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #49 on: January 21, 2022, 04:57:06 AM »
Already told you that is in the schematic.
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Offline KillerNV

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #50 on: January 21, 2022, 06:45:09 AM »
help identify С63?
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #51 on: January 21, 2022, 06:57:32 AM »
10nF. It is for decoupling from the voltage divider off the Battery voltage, the exact value isn't really critical. Anything from 1nF to 100nF would work fine there.
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Offline KillerNV

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #52 on: January 25, 2022, 01:41:57 AM »
Quote from: RDC on January 21, 2022, 06:57:32 AM
10nF. It is for decoupling from the voltage divider off the Battery voltage, the exact value isn't really critical. Anything from 1nF to 100nF would work fine there.
please tell me how many volts C63
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #53 on: January 25, 2022, 07:35:40 AM »
No idea at all, because the meter doesn't measure that. Considering where it is, after the voltage divider from the battery, and that voltage divider is half because both of those Resistors are 150k. It will never see any more than half of whatever the battery voltage will be. During charging that's 4.2v, so around 2.1v will be on that Capacitor at most, so anything rated 6.3v or higher will be fine there.
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Offline sweetthlngs

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #54 on: February 24, 2022, 11:22:08 AM »
Hello, I would like help to find the values ​​of resistors R40, R41, R42. please
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #55 on: February 24, 2022, 11:58:52 AM »
R40 - 46k
R41 - 68.5k
R42 - 46.6k
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Offline sweetthlngs

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #56 on: February 24, 2022, 12:25:40 PM »

Thanks bro you saved me. :tup:
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Offline Publicpolicyadvocate

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #57 on: February 28, 2022, 05:25:50 PM »
I lost C26. Does anyone happen to know it's value?

Someone else supposedly metered it out and got 6uf.
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Offline RDC

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #58 on: February 28, 2022, 05:48:43 PM »
C26 - 4.7uF
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Offline Dzrn

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Re: JDM-055 (1-982-707-31) Schematic
« Reply #59 on: March 13, 2022, 10:50:55 PM »
Help identify c5?
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