NCR S1 Dispenser Control Board Top Level Assy 4450751703 445-0751703
Place of Origin:
Model Number:
NCR S1 Dispenser Control Board Top Level Assembly PN 445-0751703. Dispenser brain for SelfServ 22/23/25/27. Firmware pre-loaded. Tested under load.
Supplier: Guangzhou MicroLinkpro Technology Co.,Ltd
Telephone: (+852-93572135) , Max Liu
Email: linda.zhou@microlinkpro.com
Address:201,A12 Building, Dongjin Logistics Park No. 39 Chenjialin Road, Nan'an 511340 Xintang Zengcheng District Guangzhou City, G.D, P.R.China
What This Part Does
The 445-0751703 is the S1 Dispenser Control Board — Top Level Assembly for NCR SelfServ ATMs. This board is the brain of the S1 cash dispenser, controlling every mechanical action: pick motor timing, note thickness detection, transport routing, and cassette position sensing. It communicates with the PC Core over USB/serial and executes low-latency dispense commands in real time.
When this board fails, the dispenser stops responding entirely. The ATM might still boot and run the screen and card reader, but any cash transaction returns a dispenser fault. This is the #3 most-searched NCR PN on Alibaba, with multiple Chinese suppliers competing on price — which tells you how often these get replaced.
This is the Top Level Assembly revision. Earlier board revisions (445-0749062, 445-0712895, 445-0730147) may also be available — confirm your exact S1 variant before ordering.
Technical Specs
| Part Number | 445-0751703 / 4450751703 |
| Function | S1 cash dispenser main control board — Top Level Assembly |
| Assembly | S1 Dispenser — Control Electronics |
| Compatible ATM Models | SelfServ 22, 23, 25, 27, 6622, 6625, 6627 |
| Interface | USB/Serial to PC Core, ribbon connectors to dispenser motors/sensors |
Compatible Models
SelfServ 22 / 23 — S1 dispenser, standard configuration
SelfServ 25 / 27 — S1 multi-cassette dispenser
6622 / 6625 / 6627 — Earlier S1 series (verify revision compatibility)
Signs You Need a Replacement
Dispenser not responding — ATM boots but cash module shows offline
Dispenser fault LED lit on the board itself (not the PC Core diagnostic)
Intermittent dispense failures — works cold, fails after 30+ minutes (thermal fault)
Motor over-current errors — board failing to regulate power to dispenser motors
USB enumeration failure — PC Core can't see the dispenser controller
Board past 5+ years of continuous operation in high-temperature vault
Why Buy From MicroLinkpro
Revision-matched. We verify your machine's exact S1 board revision before shipping. Wrong revision = hours of wasted field tech debugging.
Firmware pre-loaded. Board arrives ready to install. No firmware flashing required on site.
B2B pricing. ATM service companies: volume discounts at 3+ units.
Tested under load. Every board runs a full dispense cycle test (pick, transport, present) before boxing.
Ordering Info
| 445-0751703-NEW | Brand new, factory tested |
| 445-0751703-REF | Refurbished, tested, 6-month warranty |
Minimum order: 1 unit
Bulk pricing: 5+ / 10+ / 50+ tier discounts
Shipping: DHL / FedEx / UPS worldwide
Frequently Bought Together
| 445-0712895 | S1 Dispenser Control Board (earlier rev) | Alternate revision — confirm your machine's exact PN |
| 445-0756222 | S2 Cash Cassette | Dispenser control + fresh cassettes = complete dispenser service |
Technical team with 23 years of ATM engineering expertise.
Author: MicroLinkpro Technician Team
Reviewed by: Max Liu, CTO (23 years ATM engineering)
Last updated: 2026-09-24
Frequently Asked Questions
Is this an OEM original part or aftermarket?
We supply both new OEM-grade and professionally rebuilt units. Every part is tested before shipping. If you need a specific grade (new, rebuilt, or refurbished), mention it when requesting a quote.
What warranty do you provide?
12 months against manufacturing defects on NEW and REBUILT units. Refurbished units go through full functional testing and cleaning before dispatch.
Do you ship to my country?
Yes. We ship worldwide via DHL, FedEx, and UPS. Typical lead time is 1–3 business days after payment confirmation. We regularly ship to Southeast Asia, the Middle East, Africa, and Eastern Europe.
How do I confirm this part fits my ATM?
Check your machine's service manual for the part number. Send us your ATM model and serial number — our technical team (23 years of ATM engineering experience) will confirm compatibility within 12 hours.
What is the minimum order quantity?
1 unit. Bulk discounts available for 5+ units. Contact us for volume pricing.
How quickly can I get a quote?
We respond within 12 hours. Include the part number and quantity in your inquiry. WhatsApp (+852-93572135) for urgent requests.
What symptoms mean this part needs replacement?
See the "Signs You Need a Replacement" section above for the specific symptoms. If you are unsure, send us the symptoms and your machine model — we will help you diagnose before you order.
Which ATM models does this part fit?
See the "Compatible Models" section above. If your model is not listed, send us your machine type and serial number — we will confirm fitment within 12 hours.
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