New Battery Damaged after Installing OS1.5 and Factory Reset

[alfredokiwi]

Well, supposedly the ARM processor on the M3, Pa series, M50 etc, has built in the SD card controller and it supports DMA data transfers up to 80 Mbits per second, but transfer speed will depend on the FIFO buffer endpoint (in this case should be the FIFO buffer on the EDS/ HI synthesis engine or registers on the processor). Another point to take into account is if samples data is stored on the SD card in linear form and the EDS engine/processor need to perform some data allocation which consumes additional loading time (depending on the user samples set to load).

The solution used by Yamaha for sampling data retention on its Motif XF / Tyros4 is the use of NOR flash memories, these are permanent memory devices without the need of a battery backup. The devices has an endurance of 100.000 erase/write cycles, flash devices are used on any MP3 player/ SD memory stick. Here I put the link of the Motif/Tyros sampling upgrade

http://www.gear4music.com/Keyboards-and ... Module/GHS
http://www.gear4music.com/Keyboards-and ... le-1GB/JOS

An here the 256 MB DRAM module for Korg M3, Pa series sampling upgrade

http://www.gear4music.com/Keyboards-and ... for-M3/BTC

With a 25ns page access and 100ns random access on a flash memory device such speed will suffice to play samples without noticing latencies. In other words the use of flash devices for samples data storage and retrieve is the most convenient approach.

I only want to clarify this point, because we are blaming a technology that has its limitations due the architecture in use, in the case of the Hi synthesis, EDS engine using only DRAM devices for sampling user area. Maybe both DSP engines supports the possibility to use flash memories devices in the same way as Yamaha Motif/Tyros series and in this way there is no need of a battery for data retention, but I can´t assure it.

[korgpa3x]

I was in no hurry so I waited for some of you try the new OS1.5.
Today I decided to install the new OS very carefully following step by step the instructions of installation procedures. The OS1.5 was installed properly I think, later I made a Full Resource Backup and a Factory Restore. When the factory restore ended a message appeared on the screen saying to switch off the instrument, I checked the original manual and the Pdf instructions and they didn't mention that message. I didn't know if I had to press the Standby button or the rear button but I decided to turn off the instrument using the rear Power button. After that I turned on the Pa3x and noticed it was loading all the resources as if the battery was not connected. Later I checked the battery tab on global settings and a message said that the battery was damaged. Of course now the green light indicates the battery is not working and the keyboard takes a few minutes on start up.

Very dissapointing considering it took a long time to get that battery at home. Too many problems with that battery I doubt I will get another one my Pa3x may be in danger, it seems Korg has not developed very well that feature.

[DonM]

Don't know if it's the battery, but the clock in my PA3X will not stay in time. I can turn it off and by the time I drive to a job and plug it back in, the clock has reverted to 2009.

[smstome]

It is a different battery for clock which is already exhausted when shipped from factory.

Many of them had complained here about it.

[alfredokiwi]

I have figured out why on the TR workstation loading/writing samples from SD card is a bit slow. Supposedly all SD cards use a 4 bit data bus and to boost speed a system need to have a SD controller with FIFO data buffering/cache acting as DMA controller. But the TR workstation was designed without a SD controller to reduce cost in other word the SD card is connected to the data bus directly, this means that on TR workstations the data on SD cards is read/write in nibbles or 4 bits without a FIFO buffer/data cache slowing down transfers rates.

About the sampling expansion board it has built in a SCSI controller that has built in the DMA controller with data buffering which speeds up transfers rates.

[Paolo@Korg]

Vagro,

You have a personal message.

Best regards,
Paolo

[vagro]

Vagro,

You have a personal message.

Best regards,
Paolo

Thank you. I already answered your message.

[DonM]

It is a different battery for clock which is already exhausted when shipped from factory.

Many of them had complained here about it.

Thank you, I remember that now. When I take my kb in to have the joystick assembly replaced, they can do that at the same time.
DonM