NABCO MC-403-03C Printed I/O Card

Description

Key Technical Specifications

The model, part number, manufacturer part number, Kawasaki Heavy Industries designation, and drawing information above are supported by a specialist marine-equipment listing.

A separate marine-parts catalog also identifies NABCO MC-403-03C, 885-72739905 specifically as a Printed Analog Input-Output Card for marine/industrial use.

⚠️ Electrical specifications not verified: Publicly available records reviewed do not establish the exact supply voltage, individual input/output ranges, channel count, communication protocol, operating temperature, dimensions, or power consumption for this board. These values should be taken from the applicable NABCO/Kawasaki documentation rather than inferred from the model number.

Product Introduction

The NABCO MC-403-03C is a printed analog input-output card used in NABCO marine/industrial control equipment. Available records associate it with NABCO part number 885 72739905, manufacturer part number 72740556-03, and Kawasaki Heavy Industries part number M-119-17.

This board is relevant when maintaining an existing NABCO control installation and replacing the original analog I/O card. The exact electrical interface should be confirmed from the installed system documentation before procurement or commissioning.

MC-403-03C

MC-403-03C

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation — Approximately 10 Minutes

⚠️ Safety First: Notify vessel or plant operations before starting work. Place the affected control system in its approved safe state, isolate the relevant power, and apply lockout/tagout procedures where required. Follow the equipment manufacturer’s discharge and isolation requirements rather than assuming a fixed waiting period.

Tools Required

• ESD wrist strap and grounded ESD work surface
• Suitable Phillips/flat-head screwdriver set
• Digital multimeter
• Wire and connector labels
• Smartphone or camera
• Applicable NABCO/Kawasaki system drawings

Data Backup

1. Record the complete MC-403-03C model marking.
2. Record 885 72739905 and any additional board revision information.
3. Photograph the complete PCB before removal.
4. Photograph every connector and terminal position.
5. Record jumper, switch, or link settings if fitted.
6. Photograph the surrounding rack and wiring arrangement.
7. Retain the removed card until the replacement has passed functional testing.

⚠️ Do not order or install solely from the “MC-403” designation. The documented identification includes several separate numbers, including 885 72739905, 72740556-03, and M-119-17. Match the complete identification before replacement.

Stage 2: Removing the Old Module — Approximately 5 Minutes

1. Confirm that the controlled equipment is in a safe maintenance state.
2. Isolate the applicable electrical supply.
3. Establish ESD protection before touching the PCB.
4. Remove the required enclosure or rack cover.
5. Photograph the installed card and connector arrangement.
6. Label connectors if their positions could be confused.
7. Disconnect connectors carefully. Do not pull individual wires.
8. Release the PCB retaining hardware.
9. Remove the card straight from its mounting position.
10. Inspect the mating connectors and backplane for corrosion, contamination, bent contacts, or mechanical damage.

⚠️ Keep the original MC-403-03C available during commissioning. It provides the best physical reference if connector positions or configuration details are unclear.

Stage 3: Installing the New Module — Approximately 5–10 Minutes

1. Verify the replacement is marked NABCO MC-403-03C.
2. Verify 885 72739905 against the procurement documentation.
3. Compare connector locations and mounting dimensions with the original card.
4. Confirm the board revision and other markings.
5. Check the applicable NABCO/Kawasaki drawing before applying power.
6. Install the card in the correct orientation.
7. Secure the mounting hardware.
8. Reconnect each connector according to the photographs and wiring documentation.
9. Confirm that every connector is fully seated.
10. Inspect the installation for loose hardware, trapped wiring, or mechanical interference.

Configuration Clone — Critical

If the original card contains jumpers, switches, links, or adjustable settings, reproduce the documented configuration exactly.

Do not assume factory-default configuration is correct for the installed vessel or control system.

Pre-Power Checklist

• MC-403-03C model verified
• 885 72739905 part number verified
• Board revision compared
• Connector arrangement verified
• PCB orientation correct
• Wiring checked against photographs
• Configuration settings documented
• Mounting hardware secured
• No visible PCB damage

Stage 4: Power-On & Testing — Approximately 10 Minutes

1. Perform a final visual inspection before energizing.
2. Confirm that no loose tools, screws, wires, or conductive debris remain inside the enclosure.
3. Verify the applicable supply circuit against the system drawing.
4. Restore power using the approved system startup procedure.
5. Observe card and system status indicators.
6. Check for newly generated alarms or diagnostic indications.
7. Verify analog input signals against known reference values where applicable.
8. Verify analog output signals against the approved test procedure where applicable.
9. Confirm that the associated control system receives valid signal values.
10. Record the replacement card identification and test results in the maintenance log.

⚠️ Do not assign specific LED meanings, voltage limits, or channel ranges without the correct documentation for the MC-403-03C installation. The public sources identify this board as a printed analog input-output card but do not provide a reliable channel-by-channel electrical specification.

Frequently Asked Questions (FAQ)

What is the NABCO MC-403-03C?

The NABCO MC-403-03C is a printed analog input-output card used in marine/industrial control equipment. Specialist listings identify it as NABCO 885 72739905.

What is the part number for NABCO MC-403-03C?

The principal part number identified in current specialist listings is 885 72739905. The same listing also gives MFR P/N 72740556-03 and Kawasaki Heavy Industries Co., Ltd. Part No. M-119-17.

Is the MC-403-03C an analog I/O card?

Yes. Marine equipment catalogs specifically describe MC-403-03C 885-72739905 as a Printed Analog Input-Output Card.

Can I replace MC-403-03C with another NABCO MC-series card?

Do not assume compatibility. The MC-series designation alone does not establish electrical or functional interchangeability. For example, current marine catalogs list MC-403-03C alongside different cards such as MC-504-03A, which is identified as a printed F-V converter card.

Match the complete model, part number, board revision, connector layout, and system documentation before substitution.

Can the NABCO MC-403-03C be hot-swapped?

Do not assume that it is hot-swappable. Unless the applicable NABCO/Kawasaki documentation explicitly authorizes energized replacement, isolate the equipment before removing the PCB.

Is NABCO MC-403-03C obsolete?

The sources reviewed confirm that the part remains present in specialist marine-spares inventories, but they do not provide an official NABCO end-of-life notice. Therefore, it should not be labeled formally obsolete without OEM lifecycle documentation. Current listings include both new and used examples.

Why is the condition important when buying MC-403-03C?

Marine PCB inventory can originate from different sources. One current listing identifies an MC-403-03C as NEW, while another marketplace listing identifies the same 885 72739905 part number as USED.

For a critical control application, specify New Original / New Surplus or Refurbished / Tested explicitly. Request photographs of the actual board, complete identification markings, test information, and warranty terms before purchase.