Raymarine RAY 210VHF operation manual

Page 47

Table 5-4 (Continued)

Item

Symptom

Possible cause

Number

 

 

4

Squelch circuit inoperative

a. Check squelch control

 

 

b. Defective IC307 and/or associated

 

 

circuitry between pins 7 and 9

5

No receive (RX)

a. Defective regulators 1C 15(5V) and 1C

 

 

17 (8V)

 

 

b. Defective Q33 (KXB+)

 

 

c. Check IC 307 audio output voltage at

 

 

pin9

 

 

d. Defective AF amplifier IC 305

 

 

e. Defective mute circuitry (Q6 IC1)

 

 

[CPU AF Board]

 

 

f. Check XTAL4 output for 21.145MHz

 

 

signal

 

 

g. Check 21.6MHz output of first mixer

 

 

Q23, D15, DIG

 

 

h. Check 21.6MHz output of ceramic

 

 

filter FIL101

 

 

i. Check 21.6MHz output of first IF

 

 

amplifier Q30

 

 

j. Check 455 kHz signal from ceramic

 

 

filter FIL3

 

 

k. Failure of VCO circuit (Q13, Q15, Q17

 

 

and/or PLL IC9)

 

 

l. Defective CPU (IC1) [CPU AF Board]

6

Low receiver frequency

a. Check antenna and connector for

 

 

possible corrosion or bad connection

 

 

b. Failure of the output from Q21, Q22,

 

 

Q30 and/or IC307

 

 

c. Check the output level of VCO per

 

 

para.5.3.1

7

CPU inoperative [CPU AF

a. Turn off the power once, and try again

 

Board]

b. Check CPU clock frequencies (pins 36

 

 

and 37 of IC1)

 

 

c. If clock frequency is not present, check

 

 

for +5VDCline(IC4)

8

Display malfunction

a. Check the interconnection to the LCD

 

[CPU AF Board]

display

 

 

b. Inoperative CPU

35

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Contents RAY 210VHF Page Page Page Important Notice PurposePage Table of Contents Page Parts List & Drawings Page VHF Glossary of TermsPage General Equipment FeaturesPage Electrical Specifications SpecificationsMechanical Specifications Description Unpacking and InspectionEquipment Supplied Typical Mounting Methods Planning the InstallationOutline and Mounting Dimensions Mounting Options Electrical ConnectionsCable DC Power and External Speaker ConnectionsAntenna Mounting Suggestions External Speaker ConnectionsAntenna Connections Grounding Controls IntroductionControls and LCD Display Page Page Page Page Page Layout of Controls and Connectors LCD Display 0188 Operating Procedures Selecting a Weather Channel To Transmit and Receive on Intl FrequenciesDesign Channel Frequency MHzIntl 3 1st Intermediate Frequency Amplifier Circuit Antenna Switching CircuitReceiving Circuit Operation High Frequency Amplifier CircuitTransmitting Circuit Operation Antenna Monitoring Circuit High Frequency Power Amplifier CircuitPLL Circuit Operation APC CircuitBlock Diagram / RF PCB Block Diagram / CPU PCB Product Repair and Service +1 800 539 5539 ext How to contact Raymarine Technical SupportAccessories and Parts Alignments and Service Preventative MaintenanceTest Equipment PLL Adjustment TRANSMITTER/RECEIVERRF Sensitivity Adjustment Receiver Frequency Adjustment TransmitterModulation Adjustment Transmitter Power Output AdjustmentMaster Reset Trouble Shooting GuideWeather Alert Frequency Adjustment Receiver Page XTAL1 Section Parts List Description IC1 Description CPU PCB Assembly IC1 IC BR93LC56AF IC2 RAY210 Assembly Drawing Mechanical Parts List Schematic Diagram Schematic diagram/CPU PCBl Schematic diagram/CPU PCB RF PCB Layout Top View RF PCB Layout Rear View CPU PCB Layout Top view CPU PCB Layout Rear View Page VHF Marine Channel Usage Guide and Licensing Requirements Section AppendixPage Usage Guide Emergency Channel Page Coast Guard Navigation Channel Page Channels 24, 25, 26, 27, 28, 84, 85 Weather Channels WX1, WX2, WX3 State Control Environmental ChannelPhonetic Alphabet Page PO3 5TD USA