RSPower 3300 3600W Power Supply maintenance manual
Ⅰ The introduction
To help and guide site operation and maintenance personnel in improving the maintenance efficiency and accuracy of the power supply, this maintenance manual is formulated based on the after-sales maintenance data of the power supply and is provided for reference.
Ⅱ Scope of application
1. RSPOWER: PSU3300-03 （3300W）
(1) Input：200-285VAC 50/60Hz 16A Max
(2) Output：11.5V-14.5V ⎓ 3100W
12V ⎓ 200W
2. RSPOWER: PSU3300-03 PLUS （3600W）
(1) Input：185-285VAC 50/60Hz 16A Max
(2) Output：11.5V-14.5V ⎓ 3400W
12V ⎓ 200W
Ⅲ Knowledge of basic components of power supply
1. Electronic components
Resistor | The picture | Instructions |
Carbon film resistor |
| Power：1/16W~2W Resistancevalue：1Ω~3.3MΩ |
Metal oxide skin film resistor |  | Power：1/8W~5W Resistancevalue：5Ω~1MΩ Tolerance：±0.1%~±5%(J) |
SMD resistor |
| power：1/16W~1/2W Resistancevalue：0Ω~33MΩ Tolerance：±5% |
Varistor (safety gauge) |
| Withnonlinearvoltammetry characteristics,mainlyusedfor voltageclampwhenthecircuitis underovervoltage,absorbexcess currenttoprotectsensitivedevices. |
Capacitor | The picture | Instructions |
Ceramic capacitor |
| Withstand Voltage: depending on specific specifications Nominal capacitance: subject to specific specifications Tolerance: depending on particular specifications |
X capacitor |
| Safety capacitance |
Y capacitor |
| |
Thin-film capacitor |
| Nonpolar High insulation impedance Widerangeof frequency response |
Electrolytic capacitor |
| Polarity requirements: the long lead is positive, the short lead is negative. |
Thepatch capacitance |
| Pressure resistance: dependingon specific specifications Nominal capacitance: subject to specific specifications Tolerance: depending on particular specifications |
The transistor | The picture | Instructions |
Diode (rectifier, switch, voltage regulator, etc.) |
| Polarity requirements: ring mark or short pin for the negative pole |
Triode |
| The primary function is signal switching and amplification. |
IC The integrated circuit |
| PIN identification: the IC front letter, code to their own, so that the positioning mark (packaging surface has dots or gaps) is to the left below, the bottom left pin is the first foot, and the other serial number according to the counterclockwise order. |
2. structure
Serial number | Type | The picture | Serial number | Type | The picture |
1 | The fuse |
| 5 | Switch | |
2 | PCB Printed circuit board |
| 6 | Relay |
|
3 | AC socket |
| 7 | Wire |
|
4 | Fan |
| 8 | The connector |
|
Serial number | Type | The picture | Serial number | Type | The picture |
1 | The shell |
| 5 | Ceramic substrate |
|
2 | Heat sinks |
| 6 | Insulation grain |
|
3 | Mylar |
| 7 | Heat shrinkable casing |
|
4 | Insulating sheet (silicon film) |
| 8 | screw |
|
Ⅳ The product principle
The primary circuits of the power supply are: EMI circuit, bridge rectifier, power correction circuit, flyback circuit, auxiliary half-bridge LLC resonant circuit, auxiliary synchronous rectifier filter circuit, primary half-bridge LLC resonant circuit, main synchronous rectifier filter circuit, MCU control circuit, and protection circuit.
1. Power on， the input AC voltage is translated to DC voltage through the EMI circuit and the bridge rectifier circuit.
2. DC Voltage generates 18VCC through the flyback circuit;
3. 18 VCC is converted to supply relay, auxiliary circuit LLC2 IC, primary circuit LLC1 IC, PFC IC ;
4. After the PFC chip works, the PFC voltage is boosted, and the primary circuit LLC 1 IC and auxiliary circuit LLC2 IC begin to work.
5. After the main output LLC1 chip works, there is a primary output voltage through the LLC resonant circuit, and then the synchronous rectification works.
6. After the auxiliary circuit LLC2 IC works, there is an auxiliary output voltage through the LLC resonant circuit, and then the synchronous rectification works;
7. The auxiliary voltage is translated to supply the MCU IC, which provides software communication, control, and protection functions.
Ⅴ Power supply circuit block diagram
Ⅵ Common failure analysis and maintenance
1. Hardware failure
(1) Analysis process：
① Fault type determination, the specific method is：
a. If the power supply is cut off, remove it from the miner.
b. Short-circuit the 2-pin on the right of the terminal (near the V+ terminal), as shown inthe figure:
c. The power monomer is powered on, not connected to the Miner.
d. Multimeter Set the DC voltage range and measure the output voltage of the power supply. (Connect the positive terminal of the multimeter to the power supply terminal “+” and the negative terminal to the power supply terminal “-” )：
If ≥ 11.9V, the power supply hardware is preliminarily determined to be OK and will be confirmed by machine aging.
If < 11.9V, it is preliminarily determined that the power supply hardware is faulty.
② Hardware troubleshooting:
a. The power supply has no output maintenance process：
(1) The maintenance method：
Bad phenomenon | Bad reasons | The maintenance method |
No output | F01 open | Cause details: Overvoltage or overcurrent in the power supply is abnormal; cause AC insurance F01 to fuse. Set the multimeter to diode gear and measure the L and N lines of the AC socket. If no value is displayed, F01 is open. If there is a value, it indicates that the AC line is standard. |
No output | High-pressure BUCK smallplate damaged
|
Reason details: The high-pressure BUCK small plate is damaged due to the bad working environment. Maintenance method: Check whether the chips UF1, QF1, QF2, RF9, RF10, RF17, RF18, RF19, RF14 are damaged or not. If there is damage, replace the components. |
No output | BD01 or BD02 is damaged | Cause details: AC bridge rectifier diodes BD01 and BD02 are damaged due to excessive dust. Maintenance method: replace BD01, BD02, and F01; ensure the device covers the well casing. The four pins of the bridge rectifier diode shall be covered with bushing, and the radiator shall be coated with heat-dissipating cream. |
No output | BD03 is damaged | Cause details: minor bridge rectifier diode BD02 pin corrosion damage. Maintenance method: replace BD03. |
No output |
Damage offan | PFC partial blast machine: check U01, Q01, Q05, BD01, BD02, D01, D08, Q02, Q07, Q03, Q08, F01, D02, D09, and the peripheral patch resistance is damaged. If there is damage, then replace the device. Apply cooling cream when replacing BD01, BD02, Q01, Q05, D01, and D08, and cover the heat shrink tubing when replacing F01. When measuring whether the chip U01 is damaged, set the multimeter to the diode mode to detect whether the VCC has a pressure difference of about 0.5V relative to ground. If not, replace U6: (IC: NCP1654). |
Main LLC part of the machine: check whether Q30, Q40, Q25, Q39, Q15, Q16, Q17, Q18, UL1, R1, R2, R16, R18, D9, D12 is damaged, if damaged, replace the device. When replacing Q1 and Q8, be sure to apply heat-dissipating cream. When measuring whether the chip U2 is damaged, set the multimeter to the measuring diode gear and detect whether there is a pressure difference of about 0.5V at both ends of C94. If not, replace U2 (IC: NCP1399AM/1399AC). | ||
No output | The synchronous rectifieris damaged | Maintenance method: Check Q26, Q27, Q28, Q29, Q31, Q32, Q33, Q34, Q35, Q36, Q37, Q38, Q41, Q42, Q43, Q44, Q56, Q57, Q58, Q59, U17, U18, Q45, Q46, Q47, Q48, Q49, Q50, Q52, Q7 5 and resistance 2R2 are damaged, if amaged, replace the device, synchronous rectification MOS5 is 1 group, generally only one is broken, need to be carefully detected. Note: Apply heat sink cream again before replacing the MOS tube lock's heat sink. |
No start-up | Auxiliary LLC2 small board damaged | Reasons detailed: strong voltage breakdown of the auxiliary small board. Maintenance method: Check Q16 and Q11 for short circuits. If the above situation occurs, replace the component. Check whether the VCC of the UL2 chip has a pressure difference of about 0.5V to the grounding pin (pin 5). If not, replace the UL2 (IC model: 1399 AM/1399AC). Note: After replacement, reapply tri-proof paint. |
Remark: Fan damage will cause the temperature of the power supply to rise too high, resulting in explosion, device damage can be divided into two parts, PFC part of the explosion, LLC part of the explosion, analysis to each part of the measurement. The material must be replaced to correspond to the model; do not think it is the same material just because of the same appearance. | ||
2. Software failure
(1) Analysis process and fault type determination：
① If the power supply is cut off, remove it from the miner.
② Short-circuit the 2-pin on the right of the terminal (near the V+ terminal), as shown inthe figure:
③ The power monomer is powered on, not connected to the miner.
④ Multimeter Set the DC voltage range and measure the output voltage of the power supply.
(Connect the positive terminal of the multimeter to the power supply terminal + and the negative terminal to the power supply terminal -)：
If < 11.9V, the power supply hardware failure is preliminarily determined, and the analysis process and maintenance method are as described above.
If ≥ 11.9V, it is preliminarily determined that the power supply hardware is OK. Next, the power
Supply connection performance is qualified for mining machine (qualified for computing power, power consumption ratio, and other indicators), and normal running aging;
If there is still no computing power, low computing power, abnormal PS data, or other relevant error codes, it is preliminarily judged asa power supply software circuit failure;
If the aging calculation force and power consumption ratio are normal after connecting the mining machine, it indicates that the power supply is OK.
（2） The maintenance method:
Remove the MCU small board STM8S005C6T6 IC chip and the resistance container parts in turn, and replace them accordingly.
Ⅶ Maintenance tools and materials
Maintenance tools | Specifications | Power |
Soldering iron | QUICK/205 | 150W |
Hot air gun | QUICK/801DW | 1000W |
Absorb gun | / | / |
Tweezers | / | / |
Brush | / | / |
Long nose pliers | / | / |
pliers | / | / |
multimeter | / | / |
Wire stripping pliers | / | |
Electric screwdriver | / | / |
Tin wire | Diameter of 0.8 mm | / |
screwdriver | / | / |
discharger(light bulbs) | 150W | / |
Make protective switch materials. | ||
Maintenance tools | Specifications | The number of |
Air switch | 6A | 1 |
AC switch | 30A | 1 |
220v light bulb | 150W | 1 |
Ⅷ Maintenance Precautions
1. When an inadequate power supply is confirmed, be sure to use the protective switch to avoid explosion injury.
2. Pay attention to electrostatic protection during maintenance, and wear an antistatic bracelet.
3. Electric soldering iron temperature management, it is recommended to control it in 380℃~420℃.
4. When replacing materials, use products of the same model and specifications. Do not use substitutematerials without permission.
5. The defective materials that are repaired and replaced shall be marked as faulty, and the on-site positioning management shall be optimized to avoid mixing with qualified products.
6. Record the power supply S/N serial number, destructive phenomenon, bad reason, maintenance method, and other information, and regularly provide a maintenance record form.
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Business Hours: (GMT+8) 08:30-20:00 Mon to Sat 
Company Phone: +86-023-72227777
