Elevator PCB Board Mitsubishi KCR-759C Elevator Parts

1. General Specifications

• Model: KCR-759C

• Application: Elevator control system (likely for door control, signal processing, or motor management)

• Compatibility: Designed for Mitsubishi elevator models (exact compatibility depends on the series)

2. PCB Design & Manufacturing

• Layer Count: Likely a 4-6 layer PCB (for signal integrity and power distribution)

• Material: FR-4 (flame-retardant epoxy laminate)

• Copper Thickness: 1oz or 2oz (for power handling)

• Surface Finish: Lead-free HASL (Hot Air Solder Leveling) or ENIG (Electroless Nickel Immersion Gold) for corrosion resistance

3. Key Components

• Microcontroller/Processor: Mitsubishi-specific IC (possibly a proprietary Mitsubishi chip or a Renesas/Microchip-based controller)

• Power Regulation: Voltage regulators (5V, 12V, 24V DC)

• Relays/Solid-State Switches: For motor/door control

• Optocouplers/Isolators: For signal isolation and noise reduction

• Connectors: High-durability headers for wiring harnesses

• Protection Circuits: Fuses, TVS diodes, and EMI filters

4. Production Process

1. Schematic & Layout Design – Designed using CAD tools (Altium, Eagle, or Mitsubishi’s proprietary software).

2. PCB Fabrication – Etching, drilling, and layer stacking.

3. Component Sourcing – OEM-approved components (Mitsubishi may use specialized suppliers).

4. SMT Assembly – Automated pick-and-place machines for SMD components.

5. Through-Hole Assembly – Manual or wave soldering for larger components.

6. Testing & QC –

   • In-Circuit Testing (ICT) – Verifies electrical connections.

   • Functional Testing – Simulates elevator operation.

   • Environmental Stress Testing – Checks for vibration/temperature resistance.

5. Compliance & Certifications

• Safety Standards: EN 81-20 (elevator safety), UL/CE (if applicable)

• EMC Compliance: EN 61000-6-2 (immunity), EN 61000-6-4 (emissions)

6. Common Failure Points & Repairs

• Burned traces (due to power surges)

• Failed relays (mechanical wear)

• Corroded connectors (humidity exposure)

• Faulty capacitors (electrolytic aging)

7. Replacement & Availability

• OEM Part: Must be sourced from Mitsubishi or authorized distributors.

• Aftermarket Alternatives: Rare due to proprietary design.

• Refurbished Units: Sometimes available from elevator part suppliers.