Operation Manual

x
4.2.5 LCD Driver .................................................................. 4-7
4.2.6 LED Driver Circuit ....................................................... 4-7
4.2.7 Electronically Controlled Volume................................. 4-8
4.2.8 Off-Hook Detection Relay ........................................... 4-8
4.3 External Speaker Circuit ........................................................... 4-8
4.3.1 Outline ........................................................................ 4-8
4.3.2 Power Supply System ................................................. 4-8
4.3.3 Monitor Speaker Amplifier .......................................... 4-8
4.3.4 Sound Volume Control ................................................ 4-8
4.4 Specifications .......................................................................... 4-9
4.4.1 Transmitter .................................................................. 4-9
4.4.2 Receiver ...................................................................... 4-9
4.4.3 Operating Requirements ........................................... 4-10
4.4.4 Radio Dimensions ..................................................... 4-10
SECTION 5 MAINTENANCE
5.1 General .................................................................................... 5-1
5.1.1 How to Contact Raymarine (US) ................................. 5-1
5.1.2 How to Contact Raymarine (Europe)........................... 5-2
5.2 Preventive Maintenance.......................................................... 5-3
5.3 Alignment ................................................................................ 5-3
5.3.1 PLL Frequency Adjustment
(Transmitter, All Channel Receiver)............................. 5-4
5.3.2 Local Frequency Adjustment
(Channel 70 Receiver) ................................................. 5-4
5.3.3 Modulation Adjustment (Transmitter) ........................ 5-4
5.3.4 Output Power Adjustment (Transmitter) ..................... 5-4
5.3.5 RF Sensitivity Adjustment (All Channel Receiver) ..... 5-5
5.3.6 RF Sensitivity Adjustment (Channel 70 Receiver) ...... 5-5
5.3.7 Weather Alert Decoder Adjustment ............................ 5-5
5.4 Troubleshooting Guide ........................................................... 5-6
SECTION 6 PARTS LIST & DRAWINGS
6.1 Parts Location List................................................................... 6-1
6.2 RAY230 Assembly Drawing ................................................... 6-12
6.3 Block Diagram........................................................................ 6-13
6.4 RAY230 PCB Layout .............................................................. 6-14
6.5 RAY230 Wiring Diagram ........................................................ 6-15
SECTION 7 APPENDIX
7.1 VHF Marine Channel Usage Guide and
Licensing Requirements .......................................................... 7-1
RAY230_Preface.p65 7/13/2001, 1:42 PM10