Terasaki EMW-1201A CRT & RS-232C I/F Module PCB

Product Information

Manufacturer	TERASAKI (Terasaki Electric Co., Ltd.)
Model / Module Name	EMW-1201A
Module Type (printed on PCB)	CRT & RS-232C I/F MODULE
Part Number (K-number)	Not clearly visible in the supplied photograph (a market listing shows K/93Z/1-001B – not verified for this card)
EPROM Labels	CZ-8 36, CZ-8 37
On-board DC-DC Converter	TDK CBM-0505SF (marked 4405)
Connectors	CN1, CN2 (flat-cable headers) + two gold-plated edge connectors
Other Numbers on PCB	21, 95071
Serial Number	Not clearly visible in the supplied photograph
Country of Manufacture	Not clearly visible in the supplied photograph (Terasaki is a Japanese manufacturer)
Condition	New
Supplier	SM MARINE SERVICE™, Chattogram, Bangladesh

Product Introduction

The Terasaki EMW-1201A CRT & RS-232C I/F Module is the communication/interface card of Terasaki EMW-series marine control electronics. It carries two program EPROMs labelled CZ-8, NEC and Toshiba logic and memory ICs, a crystal oscillator, a TDK CBM-0505SF DC-DC converter and the CN1/CN2 interface connectors. SM MARINE SERVICE™ supplies this module as a replacement spare for ship owners, ship managers and marine electricians worldwide. Visit https://www.smmarineservice.com/ for more marine automation and navigation spare parts.

What Is This Equipment?

EMW-1201A is a plug-in PCB card that slides into the back-plane of a Terasaki control rack through two gold-plated edge connectors. As printed on the board, it is the CRT & RS-232C interface module: it links the control system to a CRT display/operator station and to RS-232C serial devices such as printers or external computers. It works together with the EMW-1101A CPU RAM & ROM module and other EMW cards in the same rack (same PCB marking 95071 seen on both cards – relationship not verified).

The exact Terasaki system name was not verified from manufacturer documentation. Terasaki EMW-series cards are commonly found in shipboard switchboard, generator control and power management panels.

Main Features

• Genuine Terasaki EMW-1201A CRT & RS-232C I/F module
• Two socketed program EPROMs labelled CZ-8 36 and CZ-8 37
• NEC and Toshiba logic, memory and communication ICs
• TDK CBM-0505SF on-board DC-DC converter
• Crystal oscillator for communication timing
• CN1 and CN2 flat-cable connectors for interface wiring
• On-board DIP switch for settings
• White card ejector levers for easy removal

Terasaki EMW-1201A CRT & RS-232C I/F Module PCB – SM MARINE SERVICE™

Main Technical Specifications

Model	EMW-1201A
Function	CRT display and RS-232C serial interface module
Part Number	K/93Z/1-001B (market listing) – not verified for this card
Program Memory	2 × socketed EPROMs, labels CZ-8 36 / CZ-8 37
DC-DC Converter	TDK CBM-0505SF – ratings not verified
Interface Connectors	CN1, CN2
Mounting	Plug-in rack card, two edge connectors, ejector levers
Supply Voltage	Not verified (supplied from the system back-plane)
Dimensions / Weight	Not verified

Inside the Unit: PCBs, Modules & Part Numbers

The following items were read from the supplied photograph:

EMW-1201A – CRT & RS-232C I/F Module

The main card itself – handles CRT display and RS-232C serial communication for the control system.

CZ-8 36 / CZ-8 37 – Program EPROMs

Two socketed EPROMs holding the interface software. When ordering, send photos of both labels so the software can be matched.

TDK CBM-0505SF – DC-DC Converter

Metal-case TDK DC-DC converter module on the board (marked 4405), supplying a separate voltage for the interface circuits. Ratings not verified.

CN1 / CN2 – Interface Connectors

Flat-cable headers for wiring to the CRT / serial devices.

PCB markings 21 and 95071

Numbers printed on the PCB; their meaning is not verified.

Main Components & Related Units

Other Terasaki EMW-series modules (from market listings – not verified against Terasaki documentation and not confirmed to be from the same rack):

• Terasaki EMW-1101A – CPU RAM & ROM Module (K/834/5-001D)
• Terasaki EMW-1202 – PCB card K/821/2-001D
• Terasaki EMW-1301 – TMA & TM Interface Module K/821/3-001B
• Terasaki EMW-1301C – PCB card
• Terasaki EMW-1401A – Parallel I/O Module K/821/4-001D

Marine & Industrial Applications

• Terasaki shipboard control panels using EMW-series cards
• Main switchboard, generator control and power management panels with CRT/operator display
• Serial data links to printers and monitoring computers
• Offshore vessels and industrial plants using Terasaki control electronics
• Spare card for onboard stock and emergency replacement

Close-up of CZ-8 EPROMs and TDK CBM-0505SF converter on Terasaki EMW-1201A – SM MARINE SERVICE™

Common Problems & Troubleshooting

• No display on CRT / operator station: check CN1/CN2 cables, display power and card seating before replacing the module.
• RS-232C communication failure: check the serial cable, settings (DIP switch) and the connected device.
• Intermittent faults: clean edge connectors, check solder joints and the DC-DC converter output.
• Program errors: verify both EPROMs are seated and carry the correct CZ-8 labels.
• Corrosion: inspect for moisture damage, especially around connectors.

Safety notes: isolate the panel before removing or inserting cards, use ESD protection, follow the permit-to-work system and the Terasaki manual. Only qualified personnel should work on switchboard equipment.

Maintenance Tips

• Keep the control rack clean, dry and ventilated.
• Inspect and clean edge connectors and CN1/CN2 cables during planned maintenance.
• Store spare cards in anti-static bags.
• Record the K-number, EPROM labels and DIP-switch settings of the fitted card.
• Keep a spare interface card onboard for critical systems.

Spare Parts & Replacement Availability

SM MARINE SERVICE™ supplies Terasaki EMW-1201A and other Terasaki PCB cards in new, used, refurbished and reconditioned condition, subject to confirmation. For a fast quotation please send:

• Module name and K-number (e.g. EMW-1201A)
• Photos of both sides of your card and the EPROM labels
• Vessel or system name and quantity
• Delivery port or country

We ship worldwide by DHL, FedEx, UPS and other couriers, and can deliver to ships through agents in major ports.

Why This Equipment Is Still Used

Many vessels still operate Terasaki control panels with EMW-series cards. Replacing the complete panel is costly and needs class approval, so owners replace only the failed card. A reliable supply of interface modules such as EMW-1201A keeps these systems running safely at low cost.

Frequently Asked Questions (FAQ)

Q1. What is Terasaki EMW-1201A?
EMW-1201A is the CRT & RS-232C I/F (interface) Module of Terasaki EMW-series marine control electronics. It handles communication between the control system and a CRT display / serial (RS-232C) devices.

Q2. What is the part number of EMW-1201A?
A market listing shows K/93Z/1-001B. The K-number is not clearly visible in our photograph, so please check the label on your card.

Q3. What do the CZ-8 labels mean?
They are software labels on the two program EPROMs (CZ-8 36 and CZ-8 37). The software set should match your installation.

Q4. What is the TDK CBM-0505SF on the board?
It is an on-board TDK DC-DC converter module. Its exact ratings are not verified.

Q5. What are CN1 and CN2?
They are the two flat-cable connectors on the card for the CRT / RS-232C interface wiring.

Q6. Which other Terasaki EMW modules can you supply?
We source EMW-1101A CPU RAM & ROM module, EMW-1202 (K/821/2-001D), EMW-1301 TMA/TM I/F module (K/821/3-001B), EMW-1301C and EMW-1401A parallel I/O module (K/821/4-001D), subject to availability.

Q7. Is this card new?
The card shown is offered in new condition. We can also supply used, refurbished and reconditioned cards, subject to confirmation.

Q8. Can you repair my faulty EMW-1201A?
Send photos and a fault description; we will advise on repair or replacement.

Q9. Do you ship worldwide?
Yes, SM MARINE SERVICE™ ships worldwide from Bangladesh and China stock locations.

Q10. How do I get a price?
Send the module name, K-number, EPROM labels and quantity to info@smmarineservice.com or WhatsApp +88 01818 929292.

Short Product Description

Terasaki EMW-1201A is the CRT & RS-232C I/F Module of Terasaki EMW-series marine control electronics. The plug-in card links the control system to a CRT display and RS-232C serial devices. It carries two program EPROMs labelled CZ-8 36 and CZ-8 37, NEC and Toshiba ICs, a crystal oscillator, a TDK CBM-0505SF DC-DC converter and CN1/CN2 interface connectors, and plugs into the rack through two gold-plated edge connectors. SM MARINE SERVICE™ supplies this module in new condition as a replacement spare for ships, offshore units and industrial plants worldwide. Send your K-number and EPROM labels for a fast quotation.

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SM MARINE SERVICE™ – Marine Automation & Navigation Equipment Supplier

Available Equipment Conditions: New • Used • Refurbished • Reconditioned (Specific product condition and availability are subject to confirmation.)

Stock Locations: Bangladesh • China

Services: Worldwide Shipping • Technical Support • Spare Parts Supply • Marine Equipment Sourcing

Samir Market, DT Road, Pahartali, beside CDA Market, Chattogram, Bangladesh

Mobile / WhatsApp / Viber: +88 01818 929292

Email: info@smmarineservice.com

Website: https://www.smmarineservice.com/

Need a Terasaki EMW-1201A or any other Terasaki PCB? Contact SM MARINE SERVICE™ today for a quick quotation.

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