Samsung SRP-270 / SRP-270A Receipt Printer Service Manual PDF

Description

Samsung SRP-270 / SRP-270A Receipt Printer Service Manual PDF DOWNLOAD

Samsung SRP-270 Series Receipt Printer Service Manual – PDF Download

This is the official Samsung SRP-270 Series Service Manual (Second Edition, Sept 2000) for professional maintenance and repair of Samsung dot matrix POS receipt printers.

✅ Models Covered

• SRP-270 / 270A / 270AS

• SRP-270AP / 270AU

• SRP-270C / 270CS

• SRP-270CP / 270CU

• SRP-270D / 270DS

• SRP-270DP / 270DU

📑 Table of Contents

1. Precautions

2. Specifications

3. Operating Instruction & Installation

4. Disassembly and Reassembly

5. Alignment and Adjustments

6. Troubleshooting

7. Exploded View and Parts List

8. Special Circuit Descriptions

9. Wiring Diagram

10. Block Diagram

11. PCB Layout and Parts List

12. Schematic Diagrams

13. Other Spec (8MB / 10T / 10N)

⚙️ Technical Specifications (Key Highlights)

🔹 General Printer Specs (Page 7)

• 9-pin serial impact dot matrix

• Bi-directional printing

• Print speed: 4.6 lines/sec (9×7 Font, 40 columns)

• Resolution: 160(W) × 144(L) DPI

• Power consumption: Approx. 24W

• AC Adapter: 110–240V, 50–60Hz

🔹 Printer Mechanism (Page 10–12)

• Printer Head Model: DH400-G10

• 9-pin head configuration

• Operating voltage: 24VDC ±5%

• Max frequency: 1500 Hz

• Head life: Approx. 200 million dot lines

• MTBF: Approx. 7.5 million lines

🔹 Auto Cutter (Page 13)

• Model: ORC-RG080-2

• Type: Guillotine

• Voltage: 24VDC ±10%

• Current: 400mA (Avg), 1.6A (Peak)

🔹 Ribbon Cassette (Page 14)

• ERC-38 (Black/Red)

• 13 mm × 6 mm

• Black: 1,500,000 characters

• Red: 750,000 characters

🔹 SMPS Power Supply (Page 15)

• Input: 110–240 VAC

• Output: +24VDC ±5%

• OCP: 2.3A – 2.5A protection

🔹 Interface Specifications (Page 16–20)

RS-232C

• Baud rate: 1200 / 2400 / 4800 / 9600 bps

• DB25P connector

• XON/XOFF support

RS-485

• Asynchronous serial

• DB25P Female connector

• Hardware & Software flow control

IEEE 1284 Parallel

• Centronics compatible

• 8-bit parallel transmission

• NACK & BUSY signals

📄 File Details

👨‍🔧 Ideal For

• POS repair technicians

• Retail system integrators

• Electronics service centers

• Restaurant & supermarket POS maintenance

Keep your Samsung SRP-270 POS printer running flawlessly with the official factory service manual. Get wiring diagrams, PCB layouts, specs, and repair procedures—instant download and ready for professional repair.