Post Reply 
[Equipment] Inside View of a ResMed S9 CPAP Machine
Author Message
kbeckman Offline

Members

Posts: 19
Joined: Dec 2012

Machine: S9 Autoset
Mask Type: Nasal pillows
Mask Make & Model: Resmed Swift FX
Humidifier: H5i
CPAP Pressure: 7 to 14
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Skaro

Post: #11
RE: Inside View of a ResMed S9 CPAP Machine
(01-22-2013 01:24 PM)gjw Wrote:  Wonder what happens when the CR2032 batteries die?

Once the battery dies, and you unplug it, or lose power you are screwed.

There are unique parameters in the unit that are not field programmable.
01-22-2013 07:55 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
SuperSleeper Offline

Administrators

Posts: 9,967
Joined: Feb 2012

Machine: PR System One REMstar Auto (DS560)
Mask Type: Nasal pillows
Mask Make & Model: ResMed Mirage Swift II
Humidifier: none
CPAP Pressure: 12.5 - 18.5 cmH20 (auto range)
CPAP Software: SleepyHead

Other Comments: Have diabetes Type II

Sex: Male
Location: Illinois, USA

Post: #12
RE: Inside View of a ResMed S9 CPAP Machine
Those CR2032 CMOS batteries usually have a long life, usually at least as long as the average lifespan of the CPAP machine. I've had computers that sat around unplugged for nearly 10 years, and even then, the CMOS battery was fine and kept pretty good time during the entire decade of non-use.

I'm surprised that a CPAP machine would be unusable if the CMOS battery dies or is removed. After replacing it with a new battery most computers will simply revert to an original factory state and I would think that the only thing you'd lose would be user's info or the clinician settings (thinks like pressure settings, date/time, etc.)...

But then again, I haven't tried to remove mine to test that theory, and no... I ain't gonna either. Too-funny

kbeckman Wrote:There are unique parameters in the unit that are not field programmable.

I'm wondering did you test this yourself perhaps? Or how did you find this out? I would think that all necessary code would be embedded into the firmware, not held in CMOS RAM. Thinking-about

SuperSleeper
Apnea Board Administrator
www.ApneaBoard.com


INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.

01-23-2013 12:30 AM
Find all posts by this user Post Reply Quote this message in a reply
archangle Offline
Wiki Editor
Advisory Members

Posts: 3,159
Joined: Feb 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
Humidifier: ResMed S9 H5i
CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #13
RE: Inside View of a ResMed S9 CPAP Machine
(01-22-2013 01:24 PM)gjw Wrote:  Wonder what happens when the CR2032 batteries die?

;-> gjw

The clock probably stops working and screws up data collection for one thing.

Yet another way to screw the patient and require him to pay a larcenous rate for an unnecessary service call because the battery isn't customer replaceable.

Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
01-23-2013 01:48 AM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
PaulaO2 Offline
Wiki Editor
Moderators

Posts: 8,065
Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #14
RE: Inside View of a ResMed S9 CPAP Machine
(01-22-2013 07:43 PM)kbeckman Wrote:  
(01-21-2013 09:38 PM)PaulaO2 Wrote:  How difficult was it to take apart? I'm thinking of taking apart my Escape to see how they compare. Perhaps the real question is how hard was it to put back together?

For me, it was rather easy, but I'm used to taking things like this apart.

I can't recommend to anyone that they take these apart, as this is a medical device.

Oh, I'm used to taking things apart and back together again. It's a hobby of mine I guess. Too-funny

I have the Escape and since I'm not depending on it, I'm really really tempted to see how it differs inside.

I'm even more tempted now to take out the battery and see what happens. Oh-jeezEat-popcorn

PaulaO2
Apnea Board Moderator
www.ApneaBoard.com


Breathe deeply and count to zen.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
01-23-2013 05:37 PM
Find all posts by this user Post Reply Quote this message in a reply
Ugly Offline

Preferred Members

Posts: 568
Joined: Oct 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal mask
Mask Make & Model: ResMed Mirage Micro
Humidifier: ResMed H5i
CPAP Pressure: 7-14
CPAP Software: ResScan SleepyHead

Other Comments: Hydrocephalus, myopia, depression, chronic ugliness, stupidity, tinnitus, mixed sleep apnea.

Sex: Male
Location: Barrie Ontario Canada

Post: #15
RE: Inside View of a ResMed S9 CPAP Machine
(01-23-2013 05:37 PM)PaulaO2 Wrote:  
(01-22-2013 07:43 PM)kbeckman Wrote:  
(01-21-2013 09:38 PM)PaulaO2 Wrote:  How difficult was it to take apart? I'm thinking of taking apart my Escape to see how they compare. Perhaps the real question is how hard was it to put back together?

For me, it was rather easy, but I'm used to taking things like this apart.

I can't recommend to anyone that they take these apart, as this is a medical device.

Oh, I'm used to taking things apart and back together again. It's a hobby of mine I guess. Too-funny

I have the Escape and since I'm not depending on it, I'm really really tempted to see how it differs inside.

I'm even more tempted now to take out the battery and see what happens.

That leads me to wonder.
Oh and by the way, I'm pondering this - untested and as far as I can tell it may even be dangerous. The brave soul who does this, it is at their own risk.

If removing the battery messes things up, then it stands to twisted logic to replace the battery while the machine is plugged in and still operating. Now, I know that this can run the risk of electrical shock to the person attempting it, but theoretically speaking, can it be done successfully?

I can bet that my old Healthdyne machine had no battery. It collected and stored no data. It just pumped air. That's how it stayed in service for 14 years. To be sure, during my undercover investigations on the ResMed site, I was able to download all the clinical manuals I wanted :grin: but no service manuals.
Dont-know
01-23-2013 06:10 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
PaulaO2 Offline
Wiki Editor
Moderators

Posts: 8,065
Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #16
RE: Inside View of a ResMed S9 CPAP Machine
Quote:If removing the battery messes things up, then it stands to twisted logic to replace the battery while the machine is plugged in and still operating. Now, I know that this can run the risk of electrical shock to the person attempting it, but theoretically speaking, can it be done successfully?

No. There's too much of a risk of touching something live. Or, worse, dropping the battery and have it short out the board by touching two things at once. Then there's the arc risk.

PaulaO2
Apnea Board Moderator
www.ApneaBoard.com


Breathe deeply and count to zen.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
01-23-2013 09:41 PM
Find all posts by this user Post Reply Quote this message in a reply
jeno Offline

Members

Posts: 5
Joined: Jan 2013

Machine: S9 Elete
Mask Type: Nasal pillows
Mask Make & Model: Resmed
Humidifier: H5i
CPAP Pressure: unsure
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Perth, Australia

Post: #17
RE: Inside View of a ResMed S9 CPAP Machine
You'll find the internals of the machine are 24 volts or less, so you are pretty safe poking around inside it. Of course there is the risk of electrostatically frying the odd chip or two on the board and crippling it. It is a small computer after all.

It's 24v output from the power brick so that's OK to play with, but don't mess with the brick itself or power point side of the brick Shock
01-24-2013 12:55 AM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
archangle Offline
Wiki Editor
Advisory Members

Posts: 3,159
Joined: Feb 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
Humidifier: ResMed S9 H5i
CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #18
RE: Inside View of a ResMed S9 CPAP Machine
(01-23-2013 09:41 PM)PaulaO2 Wrote:  
Quote:If removing the battery messes things up, then it stands to twisted logic to replace the battery while the machine is plugged in and still operating. Now, I know that this can run the risk of electrical shock to the person attempting it, but theoretically speaking, can it be done successfully?

No. There's too much of a risk of touching something live. Or, worse, dropping the battery and have it short out the board by touching two things at once. Then there's the arc risk.

Looks like the battery is on the bottom of the circuit board, so that would make it doubly difficult. You might be able to take the card out, and plug the power supply in, then swap the battery. Not that I'm recommending it.

Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
01-24-2013 04:08 AM
Find all posts by this user Post Reply Quote this message in a reply
archangle Offline
Wiki Editor
Advisory Members

Posts: 3,159
Joined: Feb 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
Humidifier: ResMed S9 H5i
CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #19
RE: Inside View of a ResMed S9 CPAP Machine
(01-23-2013 01:48 AM)archangle Wrote:  
(01-22-2013 01:24 PM)gjw Wrote:  Wonder what happens when the CR2032 batteries die?

;-> gjw

The clock probably stops working and screws up data collection for one thing.

Yet another way to screw the patient and require him to pay a larcenous rate for an unnecessary service call because the battery isn't customer replaceable.

BTW, at least it's not like the Respironics machines where you can't even reset the clock without software and a special cable not available to the general public.

Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
01-24-2013 04:11 AM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
archangle Offline
Wiki Editor
Advisory Members

Posts: 3,159
Joined: Feb 2012

Machine: ResMed S9 AutoSet
Mask Type: Nasal pillows
Mask Make & Model: ResMed Swift FX
Humidifier: ResMed S9 H5i
CPAP Pressure: 16-20
CPAP Software: ResScan SleepyHead EncoreBasic

Other Comments: Happy PAPper

Sex: Undisclosed
Location: USA

Post: #20
Observations and Questions.
Parts on the board as best as I can figure

Underside view

Power connector (Upper left with red, white, black wires.)
Modem connector (blue)
2 point airflow sensor (black, just below modem connector) Rests on top of two round silicone bumps. Note that the airflow sensor appears to be before the fan in the airflow path.
Main processor. (Black square just right and below 2 point airflow sensor) ARM processor.
SD card holder (Upper right)
Humidifier connector (Left edge, below power connector)
"Sensor 1" (lower left with round silicone air connector) Probably the pressure sensor located after the fan in the airflow.
SK3 (White rectangle to the left of Sensor 1) The connector where the blower plugs into the circuit board (I think).

It's neat how the only thing to plug in is the power connector for the blower motor. The airflow connectors just lay on top of the port they need. The buttons just sit on top of the switches.

How does the knob come off?

Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
01-24-2013 05:24 AM
Find all posts by this user Post Reply Quote this message in a reply
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Use CPAP machine to get a new baseline AHI? blueelement2016 5 338 11-12-2016 01:37 AM
Last Post: blueelement2016
  Resmed Airsense 10 CPAP data versus Resmed Airsense 10 Autoset data David P. 4 534 10-29-2016 08:42 PM
Last Post: trish6hundred
  New CPAP Machine cerenkov 3 301 10-28-2016 08:43 PM
Last Post: cerenkov
  [Pressure] Adjusting pressure on RESmart CPAP machine garyd86421 5 440 10-20-2016 10:32 AM
Last Post: garyd86421
Exclaimation CPAP Machine Choices - read this before you accept a new machine SuperSleeper 2 6,078 10-12-2016 11:37 AM
Last Post: DariaVader
  [CPAP] Service Required Error Codes - Inner Workings of a CPAP machine SuperSleeper 18 65,395 10-10-2016 01:48 PM
Last Post: juan345
  CPAP Machine Release Cycles DevChuck 5 353 10-10-2016 01:17 PM
Last Post: PoolQ

Forum Jump:

Who's Online (Complete List)