5-9
Maintenance
d. Check VCO control voltage at TP3:
1.5V - 5.5V
e.Check PLL fin level at pin 8 of IC4,
245mV min
f. Defective/device: IC3-IC5, CPU
(IC305), IC13-14, Q8-13, VCO
10
a.Defective PTT switch on Handset
(S727)
b. Check PTT control circuit:
1) TXD data at Q705, pin 27 of IC 706
2) PTT signal at PC304, PC306,
PC308
3) RXD data at Q319-320
c.Check T8v line: Q31 output
d. Check PLL signal:5V at Q32 input,
IC305 pin79
e.Check PLL unlock: IC5 pin3,
unlock=51
f. Check PLL circuit: See Item 9
g.Defective/device
1) Handset: IC708, Q701, Q705-707
PC701, PTT Sw
2) CPU PCB: IC305, PC304-309
Q316-321, D307-312
3) RF PCB: Q31-32, PLL circuit
11
a.Check ANT cable and connector
b. Check DC line current: 25W 6.5A
c.Check LPF and Antenna switch
d. Check PA input power: 250mW typ.
e.Check power control circuit:
1) VR1-Low and VR2-High
2) APC output voltage at pin 2 of PA
3) H/L select: Q7 input (H-0V)
f. Defective/device: VR1-2, Q1-2, Q5-
7, D1-6, IC1-2 Antenna cable with c n
No transmit (TX)
Low power output
(TX)
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...