Troubleshooting Flow Chart
Uc (430
‐
470 MHz)
28
[1] Voltage of the power supply is about 3.7 V.
[2] For low power, VGG is 1.2 to 1.4 V; for high power, VGG is 1.4 to 1.6 V.
[3] For low power, TV/APC is 1.4 to 1.6 V; for high power, TV/APC is 2.0 to 2.2 V.
[4] TX_En is about 3 V.
[5] 3VA_TX_RF is about 3 V.
[6] High power is about 2.6 W; low power is about 1.5 W.
[7] Start-up voltage of D8021 is about 0.7 V. The low-pass coil must be soldered appropriately and
remain in good condition. The RF connector must remain in good condition.
[8] The match components must be soldered appropriately and remain in good condition.
[9] Vdd is about 3.7 V; for low power, Vgg is 1.2 to 1.4 V; for high power, Vgg is 1.4 to 1.6 V.
[10] Vdd is about 3.7 V; for low power, Vgg is 1.2 to 1.4 V; for high power, Vgg is 1.4 to 1.6 V.
[11] Check the collector voltage and base voltage when there is no power output
from
Q606.
[12] Check the collector voltage and base voltage when there is no power output
from
Q7004.
Summary of Contents for PD362
Page 1: ...PORTABLE ...
Page 5: ...Ua 400 440 MHz ...
Page 16: ...Ua 400 440 MHz Exploded View and Packaging Guide 9 3 2 Packaging Guide ...
Page 43: ...9 PCB View Main Board_Top Layer 35 ...
Page 44: ...Main Board_Bottom Layer 36 ...
Page 73: ...Uc 430 470 MHz ...
Page 84: ...Uc 430 470 MHz Exploded View and Packaging Guide 9 3 2 Packaging Guide ...
Page 111: ...9 PCB View Main Board_Top Layer 35 ...
Page 112: ...Main Board_Bottom Layer 36 ...
