Yaskawa · Control Boards & PCBs
Yaskawa R84H-M repair
Component-level repair for the Yaskawa R84H-M (unit, cpu cat no. eg 99073), onsite or sent in from anywhere in India. The diagnosis and repair cost are confirmed before any work starts.
Cost confirmed before any work starts · Warranty of 30 days to 6 months
At a glance
The Yaskawa R84H-M
- Manufacturer
- Yaskawa
- Model / part number
- R84H-M
- Also searched as
- R84HM · R84H M
- Description
- Unit, CPU cat no. EG 99073
- Category
- Control Boards & PCBs
- Service
- Diagnosis and component-level repair, onsite or ship-in
- Warranty
- 30 days to 6 months, confirmed before work starts
Yaskawa makes AC drives, Sigma-series servo amplifiers and motors, motion controllers and robot controllers, found widely on machine tools, packaging and handling equipment.
Common faults
What usually fails on a unit like the R84H-M
Control, interface and processor boards inside printing presses, chillers, compressors and special-purpose machines are often unavailable or very expensive as spares. Board-level repair finds the failed components and returns the original board.
On-board power faults
Failed regulators, DC-DC converters and capacitors stop the board or cause random resets.
Damaged inputs and outputs
Driver transistors, opto-couplers and relays damaged by shorts or surges in machine wiring.
Processor and memory faults
Failed processors, memory or corrupted firmware stop the board working.
Connector and track damage
Corrosion, burnt tracks and cracked solder joints, often from heat, vibration or moisture.
Communication faults
Failed serial, CAN or network interfaces between boards.
Processor board
Processor boards hold firmware and often configuration. The repair works around the memory where possible; send any backup you have, and note the firmware version if the system shows it.
First checks
What to check before calling an engineer
Isolate and lock out the supply, and wait for stored energy to discharge, before opening anything.
Safe for plant staff
- Photograph connectors, jumpers and switches before removing the board.
- Note error messages from the machine.
- Check the supply voltages reaching the board.
Leave to a specialist
- Component-level fault-finding and repair.
- Testing the board with its inputs and outputs simulated.
- Firmware and memory work.
Getting it fixed
How to get the R84H-M repaired
What to send with it
- The board, packed against static.
- The machine make and model it comes from.
- The fault and any error message.
Onsite or ship-in
Technicians work onsite from our Hyderabad base and travel to plants across India; anything that can be removed can also be sent to MachineryFix from anywhere in the country.
Warranty. Repairs carry a warranty of 30 days to 6 months, depending on the item and the repair; the exact term is confirmed before work starts.
FAQ
R84H-M repair questions
Can the Yaskawa R84H-M be repaired without a circuit diagram?+
Usually, yes. Boards are traced and tested at component level. A known-good board for comparison helps but is not required.
Does the Yaskawa R84H-M have to be sent in, or can an engineer come to the plant?+
Either. An engineer can diagnose it in place and repair it there or take it away, or the unit can be sent to MachineryFix from anywhere in India. The diagnosis and repair cost are confirmed before any work starts.
Is MachineryFix connected to Yaskawa?+
No. Yaskawa and the model name are used only to identify the equipment. MachineryFix is an independent repair service and is not affiliated with or endorsed by Yaskawa.
Same manufacturer
Other Yaskawa Control Boards & PCBs
Other manufacturers
Control Boards & PCBs from other makers
Yaskawa and R84H-M are named only to identify the equipment. MachineryFix is not affiliated with or endorsed by Yaskawa.
R84H-M down?
Send the fault and what the machine was doing. We'll match an engineer who works on it.