Motorola EP350 Service Manual page 84

9-6
Table 9-4. Troubleshooting Table for Board and IC Signals (VHF) (Continued)
IC Designator
Q601
1. All voltages are measured with a high-impedance digital voltmeter and expressed in volts DC relative to ground (0V).
2. Voltages are measured with a DC input voltage of 7.50 + .02 volts DC applied to the battery connector (J602).
3. All voltages are measured in the squelched receive mode, unless otherwise indicated.
4. Voltages are identical for VHF and UHF models unless otherwise indicated.
VHF Troubleshooting Tables: Troubleshooting Table for Board and IC Signals (VHF)
Pin Pin Function
E GND
B Audio_MUTE_CON
C Mode
DC Voltage (V) Comments (Condition)
0
Mute: Low
None Mute: High
Mute: High
None Mute: Low