TRANSCEIVER 400 MHz MTP700 Portable Radio / Detailed Service Manual 4.1 - 63
DC Distribution (V3_2.775V) Test
Use this test on a unit with the following symptoms: no power, no V3_2.775V, V1_3V, V2_2.775V,
VREF1_2.775V, VREF2_2.775V.
Note: The following are the DC power distribution voltages with their correct values and appropriate location
to check the voltages:
• FUSED B+ (7.2Vdc) @ F200, C268, VR201, @ C222, C228, C250, C280, C281.
• FILT_3.3V (3.3Vdc) @ C282, C255, C260, C284, @ C240, C241, @ C201, C242.
• V1_3V (3Vdc) @ C211, @ C264, C266..
• V2_2.775V (2.775Vdc) @ C210, C213, C257.
• V3_2.775V_DIG (2.775Vdc) @ C209, C258, C259.
• V3_2.775V (2.775Vdc) @ C294, C295
• VREF1_2.775V (2.775Vdc) @ C285.
• VREF2_2.775V_DIG (2.775Vdc) @ C212, C260, C261.
• VREF2_2.775V (2.775Vdc) @ C262, C263.
• V4_2.775V_GCAP3 (2.775Vdc) @ C225, C244, C247.
• V4_2.775V (2.775Vdc) @ C90, C291.
• V4_2.775V_LNODCT (2.775Vdc) @ C340, C341.
• 5V_RF (5Vdc) @ C292, C293, @ C251, C223.
• PWM1_1.8V (1.8Vdc) @ C224, C226, C243, C248.
• 5.5V_RF (5.5Vdc) @ C299, C220.
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