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STD Jura_XS90_ACDCPSU_Existingboard
License: Public Domain
Mode: Editors' pick
- 0
Update time：
2021-05-23 17:05:27
Creation time：
2020-09-13 10:27:16
Description
This is a reverse engineered schematic of the Jura coffee machine model XS90 AC/DC board. On this board is component UX11V20 (U1) which is an unknown IC.
This IC fails on many Jura machines and requires a specially developed replacement pcb because this IC is unobtainable.
Only the circuit around U1 and the cap dropper AC/DC power supply have been reverse-engineered in this schematic.
The replacement pcb has been developed as a separate project.
For more info see these forums:
https://www.circuitsonline.net/forum/view/116248
https://monitor.net.ru/forum/threads/530509
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Quantity |
|---|---|---|---|
| 1 | 4A | RY4A | 1 |
| 2 | 1m | L1 | 1 |
| 3 | HDR-F-2.54_1x2 | CP2 | 1 |
| 4 | 47u100V | C13 | 1 |
| 5 | 100u16V | C17 | 1 |
| 6 | 63849-1 | TM8,TM7 | 2 |
| 7 | 100n | C12,C10 | 2 |
| 8 | 1u | C14,C16,C1,C18,C26,C19,C23 | 7 |
| 9 | 150n | C11 | 1 |
| 10 | HDR-M-2.54_1x1 | J1,J2,J3 | 3 |
| 11 | LED-TH-3mm_R | LED1 | 1 |
| 12 | LTV-817-BN | U9,U8 | 2 |
| 13 | UX11V20_SOIC8 | U1 | 1 |
| 14 | ON/OFF | S1 | 1 |
| 15 | 1N5819-B | D25 | 1 |
| 16 | 1N4004 | D23,D22,D21,D20,D19,D18 | 6 |
| 17 | 1N4758A | ZD2 | 1 |
| 18 | 1x3 Header | CP30 | 1 |
| 19 | 1N4148 | D26 | 1 |
| 20 | 680k | R36 | 1 |
| 21 | 4k7 | R35,R21,R20,R22,R18,R19 | 6 |
| 22 | 1M | R15,R16 | 2 |
| 23 | 100 | R30,R14,R32 | 3 |
| 24 | SW_SPDT | RY4B | 1 |
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