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(Новая страница: «WB SH 3.5: Errata») |
(Новая страница: «thumb|500px| C5 capacitor in WB SH rev. 3.5 (0350006)») |
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(не показано 55 промежуточных версий этого же участника) | |||
Строка 4: | Строка 4: | ||
__FORCETOC__ | __FORCETOC__ | ||
== 0350001: | == 0350001: Insufficient peak current == | ||
''' | '''Revision:''' | ||
3.5 | 3.5 | ||
''' | '''Description''' | ||
In a small part of devices shipped before 10.06.2014, the power supply circuit incorrectly limits the output current. | |||
''' | '''Symptoms''' | ||
* | * The Board sometimes reboots when you boot right after initializing the USB hub | ||
* | * The Board reboots when GSM is running at a poor signal level. | ||
''' | '''How to fix''' | ||
The current-setting resistor needs to be replaced. Contact technical support. | |||
See also [[WB_SH_3.5:_Errata#0350004: Insufficient peak current (2)| 0350004]] | |||
== 0350002: | == 0350002: Intermittent shutdown leads to the impossibility of download == | ||
''' | '''Revision:''' | ||
3.5 | 3.5 | ||
''' | '''Description''' | ||
After a short (<1s) shutdown of the WB SH using the switch on the case, the device does not boot. | |||
''' | '''How to fix''' | ||
- | - | ||
Строка 44: | Строка 44: | ||
''' | '''Workarounds''' | ||
Turn off the board for a few seconds, then turn back on. | |||
''' | '''Reason''' | ||
Undocumented processor behavior. | |||
== 0350003: | == 0350003: Work with DMX512 is not supported== | ||
''' | '''Revision:''' | ||
3.5 | 3.5 | ||
''' | '''Description''' | ||
The built-in RS-485 ports cannot be set to 250 kBaud. | |||
This makes it impossible to work with DMX-512. | |||
''' | '''How to fix''' | ||
Need to replace the crystal oscillator, and recompile [[Device Tree/en]]. Recommended value: 24MHz. | |||
''' | '''Workarounds''' | ||
Use a USB-RS485 adapter. | |||
For example: (http://ru.aliexpress.com/item/Free-Shipping-USB-to-RS485-485-Converter-Adapter-Support-Win7-XP-Vista-Linux-Mac-OS-WinCE5/1896086704.html , http://www.dx.com/ru/p/usb-to-rs485-module-black-221402?tc=RUB&gclid=COavlbDOgb8CFeHbcgodIjUAOg#.U6CSrv53TFU ) | |||
It is recommended to use adapters on the FT232RL chip and the like. | |||
Delivery of fixed Wiren Board Smart Home is possible. | |||
''' | '''Reason''' | ||
The wrong value of the crystal oscillator. | |||
== 0350004: | == 0350004: Insufficient peak current (2) == | ||
[[File:WB3.5mount top C11.jpg|thumb|500px| | [[File:WB3.5mount top C11.jpg|thumb|500px|C11 capacitor placement in WB SH rev. 3.5 (0350004)]] | ||
''' | '''Revision''': | ||
3.5, S/N | 3.5, S/N before 230 | ||
''' | '''Description''' | ||
In devices shipped before 20.06.2014 (serial numbers less than 230), the power supply circuit incorrectly limits the output current. | |||
''' | '''Symptoms''' | ||
If GSM is active and the signal level is poor, it can be observed under certain conditions: | |||
* | * reboot the Board | ||
* | * disable and reconnect the Wi-Fi module | ||
* | * Ethernet shutdown | ||
''' | '''How to fix''' | ||
Unsoldering capacitor C11 fixes the problem. See diagram. | |||
== 0350005: | == 0350005: Leads from GSM on prtctrl line == | ||
''' | '''Revision''': | ||
3.5 | 3.5 | ||
''' | '''Description''' | ||
PRTCTRL lines (power management for USB devices) | |||
are susceptible to interference from the radiation of the GSM antenna. | |||
At high output power GSM and is close to the antenna location, interference lead to short-term withdrawal power with USB devices. | |||
''' | '''Symptoms''' | ||
If GSM is active and the signal level is poor, it can be observed under certain conditions: | |||
* | * disable and reconnect the Wi-Fi module | ||
* | * disconnect and reconnect external USB devices | ||
''' | '''How to fix''' | ||
* | * Change the location of the built-in GSM antenna in the housing | ||
* | * Take the built-in GSM antenna outside the case | ||
* | * Use external GSM antenna | ||
== 0350006: | = = = 0350006: Board power supply problems == | ||
''' | '''Revision''': | ||
3.5 | 3.5 | ||
''' | '''Description''' | ||
Incorrect C5 capacitor value in a very small number of boards shipped before June 10, 2014. | |||
''' | '''Symptoms''' | ||
There are problems with switching the Board on: the device turns on only after several switches of the on/off button. | |||
''' | '''How to fix''' | ||
* | * Change the capacitor C5 to the capacitor of capacity 1 µf (see figure) | ||
[[File:WB3top c5.jpg|thumb|500px| | [[File:WB3top c5.jpg|thumb|500px| C5 capacitor in WB SH rev. 3.5 (0350006)]] |
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