5-6
Maintenance
5.4
5.4
5.4
5.4
5.4 Troubleshooting Guide
Troubleshooting Guide
Troubleshooting Guide
Troubleshooting Guide
Troubleshooting Guide
The following table provides a general troubleshooting chart for the a
technician to isolate circuit failures within specific functional areas of the
VHF radio.
Note:
Micro-components within the radio are generally not field replaceable.
Therefore repairs to the radio typically go down to the PC board level
only. A replacement parts list for the RAY230/E can be found in Section 6.
Item No.
Item No.
Item No.
Item No.
Item No.
Symptom
Symptom
Symptom
Symptom
Symptom
Possible Cause
Possible Cause
Possible Cause
Possible Cause
Possible Cause
1
a.10 amp fuse in power line open
b. Check Power SW and Relay (RL1)
c.Check SW circuit as follows
1) Q26 input voltage: 0.7V -ON
2) +5v line: IC306 out at CPU PCB
3) R166: open
4) D18: shorted. Defective/device:
Power Switch, D17-18, Q26-27
Relay (RL1), R166, IC305-7
2
a.Defective handset cable and
connector.
b. Check handset as follows.
1) +B line: +13V Q708 Keyscan
output
2) +5v line: IC701 output
c.Defective/device: CPU (IC708), Reset
IC (IC707), Q701, Q704-6, Q708
Photo Coupler (PC701)
d. Check CPU PCB as follows:
1) RXD data input at Q319-321
e.Defective/device: CPU (IC305), Q319-
321 Photo Coupler (PC305, 307, 309)
3
a.Check RF PCB as follows:
1) RF on/off: +5V at pin 12 of J1
2) Q29 input
Unit does not turn
on and Main Switch
LED off during
Standby mode
Unit does not turn
on and LCD off
during Working
mode
No sound with AF
signal applied to
AF1 output (pin 10
of J2)
Содержание RAY230E
Страница 1: ...RAY230 RAY230E Fixed Mount VHF Radio Owner s Handbook Document number R49006_1 Date May 2001...
Страница 2: ......
Страница 7: ...vii Declaration of Conformity goes here...
Страница 102: ...3 80 Operations...
Страница 135: ...6 13 Parts List and Drawings 6 3 6 3 6 3 6 3 6 3 BLOCK DIAGRAM BLOCK DIAGRAM BLOCK DIAGRAM BLOCK DIAGRAM BLOCK DIAGRAM...
Страница 138: ...6 16 Parts List and Drawings...
Страница 150: ...7 12 Appendix...