Raymarine RAY 210VHF operation manual XTAL1

Page 48

Table 54 (Continued)

Item

Symptom

 

Possible cause

Number

 

 

 

9

No transmit(TX)

 

a. Defective PTT switch

 

 

 

b. Defective regulators IC15 (5V), IC17

 

 

 

(8V)

 

 

 

c. Defective Q32 (TX +B)

 

 

 

d. Check power transmit circuit (Q3, Q4,

 

 

 

IC1)

 

 

 

e. Failure of VCO circuit (Q15 and/or

 

 

 

Q17) or PLL (IC9)

 

 

 

f. Check PLL control voltage for 3.5

 

 

 

VDC at TP1 or channel 16

 

 

 

g. Failure of talk detection circuit (Q9)

 

 

 

[CPU AF Board]

10

Low RF power output

 

a. Check RF power output from IC1. If

 

 

 

it checks good, check the triple P type

 

 

 

network component (L1, L2, C3, etc.)

 

 

 

and antenna switching diode (D2). If not

 

 

 

good then check the voltage level

 

 

 

outputs of the drive amplifiers Q3 and

 

 

 

Q4 as well the associated circuitry

 

 

 

b. Check power control circuit (Q1, Q2,

 

 

 

Q5) and IC2

11

Poor or no modulation

 

a. Check VCO output frequency at pin8

 

 

 

of PLL10. PLL phase detector output at

 

 

 

pin 5 of PLL IC9a associated circuitry

 

 

 

b. Check 12.8MHz crystal (XTAL1)

12

PLL output frequency

or

a. Check frequency of 12.8MHz crystal

 

incorrect

 

(XTAL1)

 

 

 

b. Check the frequency input at pin 8 or

 

 

 

IC9 and verify the transmit frequency

36

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Contents RAY 210VHF Page Page Page Purpose Important NoticePage Table of Contents Page Parts List & Drawings Page Glossary of Terms VHFPage Equipment Features GeneralPage Specifications Electrical SpecificationsMechanical Specifications Unpacking and Inspection Equipment SuppliedDescription Planning the Installation Typical Mounting MethodsOutline and Mounting Dimensions Electrical Connections Mounting OptionsDC Power and External Speaker Connections CableExternal Speaker Connections Antenna ConnectionsAntenna Mounting Suggestions Grounding Introduction Controls and LCD DisplayControls Page Page Page Page Page Layout of Controls and Connectors LCD Display 0188 Operating Procedures To Transmit and Receive on Intl Frequencies Selecting a Weather ChannelChannel Frequency MHz DesignIntl Antenna Switching Circuit Receiving Circuit OperationHigh Frequency Amplifier Circuit 3 1st Intermediate Frequency Amplifier CircuitTransmitting Circuit Operation High Frequency Power Amplifier Circuit PLL Circuit OperationAPC Circuit Antenna Monitoring CircuitBlock Diagram / RF PCB Block Diagram / CPU PCB How to contact Raymarine Technical Support Accessories and PartsProduct Repair and Service +1 800 539 5539 ext Preventative Maintenance Alignments and ServicePLL Adjustment TRANSMITTER/RECEIVER Test EquipmentFrequency Adjustment Transmitter Modulation Adjustment TransmitterPower Output Adjustment RF Sensitivity Adjustment ReceiverTrouble Shooting Guide Weather Alert Frequency Adjustment ReceiverMaster Reset 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 Section Appendix VHF Marine Channel Usage Guide and Licensing RequirementsPage Usage Guide Emergency Channel Page Coast Guard Navigation Channel Page Channels 24, 25, 26, 27, 28, 84, 85 State Control Environmental Channel Weather Channels WX1, WX2, WX3Phonetic Alphabet Page PO3 5TD USA