Summary of Contents for Samyung SN-100
- Page 1 SERVICE MANUAL SN-100 MODEL 1. Initial Setup 1-1. POWER Using 30A of DC24V. SP-1250ADC is suitable for power supply according to IMO regulation.
- Page 2 -> Input MMSI (5 no of words) Press No 1 -> -> Input MMSI (9 no of words) Using to Return. 3. CIRCUIT EXPLAIN 3-1 OVERVIEW SN-100 consists of main receiver of NBDP, CONNECTION BOARD, CPU BOARD, PLL BOARD, POWER SUPPLY.
- Page 3 The bottom of back side for this terminal is consists of Input Power, connector of SRG- 1150DN/SRG-1250DN, W/K Whip antenna for receiving, coaxial connector, EARTH socket, Keyboard connector and EMC LIGHT connector. 3-2 CONNECTION BOARD T-020 (OLD) / G-1151 (NEW) T-020 / G-1151 is the PCB which is connecting CPU BOARD and other PCBs when receiving signal by NBDP.
- Page 4 The signal that comes into filter selects the filter assigned each frequency as U4 and U6. And 1’st LOCAL through IC2, 2’nd LOCAL through IC1, and BFO signal through U1 should be mixed. And then, MARK(1.7KHz+80Hz) and SPACE(1.7KHz+80Hz) signals are generated. ②...
- Page 5 3-5 POWER CIRCUIT T-025 Power circuit consists of constant voltage circuit which deliver constant DC power to every part. And while power on, it makes ON main power DC 24V, convert constant voltage +12V, +8V, +5V. If it is overpowered +32V,then power off. Prevention to receiving voltage circuit is built-in.
- Page 6 ② RX ANT IN : Impedance 50Ω MF/HF RX ANT input jack. ③ ANT OUT : Connect which send W/K signal received from ‘RX-ANT IN’ to SRG- 1150DN/SRG-3150DN. ④ KEY-BOARD : As connector which is connecting Keyboard to SN-100, it supplies +5V, DATA, CLK etc. ⑤ GND : Receiver system ground.
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Page 7: Troubleshooting
⑩ CONNECTOR TO MAIN UNIT : Connect to SRG-1150DN/SRG-1250DN and TX/RX for PTT IN, PTT OUT, READY, AF+, AF-. 4. TROUBLESHOOTING As SN-100 is NBDP terminal, error can be happened on transceiver, power supply , CPU BOARD, LCD. When error happens, check as follow, 4-1 POWER SUPPLY ①... - Page 8 - In this case, the condition of connect point of LCD connector or of LCD board must be defected. The same board & connector should be cleaned with detergent material that is volatile. 3. NBDP DATA RECEIVING ① . Data is not received. - Firstly, check that ANT is correctly connected.
- Page 9 5. In case of checking or modulating, pay attention to the difference when measuring instrument is connected into each circuit or not. 6. All maintenance had better be carried out in our agent or SAMYUNG ENC.,LTD.
- Page 10 NSTALLATION DRAWING – A3 AREA 5. 도면 (구형)
- Page 11 5-1 BLOCK DIAGRAM 5-2 T-020 NBDP MAIN BOARD...
- Page 12 5-3 T-022 RX/TX BOARD...
- Page 13 5-4 T-023 NBDP RX/TX BOARD...
- Page 14 5-5 T-025 NBDP POWER CONTROL BOARD...
- Page 15 6. 도면 (신형) TERMINAL WIRING DIAGRAM...
- Page 16 6-1 G-1151 CPU & CONTROL BOARD...
- Page 17 6-2 T-025 NBDP MUTHER BOARD...
- Page 18 6-4 T-130 NBDP MAIN BOARD (PAGE1)
- Page 19 6-5 T-130 NBDP MAIN BOARD (PAGE2)
- Page 20 6-6 T-132 NBDP MAIN RX BOARD...
- Page 21 6-7 T-132 NBDP PLL SYNTHESIZE BOARD...
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