Hytera PD362, Service Manual

Page: 105 / 141

Troubleshooting Flow Chart
Uc (430
‐
470 MHz)
30
1.63 V at pole B. During receipt , the voltage is about 1.17 V at pole E of Q8004, about 2.83 V at pole C
and about 1.88 V at pole B.
[3] The CV value varies with frequencies. Generally, it is above 0.55 V and below 2.4 V .
[4] L8018/L8045 is on.
[5] Normally, the voltage is about 2.71 V at pole C of Q8010, about 0.67 V at pole B and about 0.04 V at
pole E; the voltage is about 2.6 V at pole C of Q8007, about 0.84 V at pole B and about 0.12 V at pole E.
[6] PLL_Clk outputs 960 kHz clock.
[7] During receipt, D501 is off and D502 is on, the positive pole voltage is about 1.02 V; during
transmission , D501 is on and D502 is off, the positive pole is at a voltage of about 1.02 V.
[8] During normal operation, when there is no load connected to the post-stage of C8072 and C8124, the
power output is about 4 dBm. When the post-stage of C8098 is disconnected, the power output of
Q8007 is about 1.25 dBm when transmitting and about 2.5 dBm when receiving.