Shure U4D, Service Manual

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Shure U4D Dual Diversity UHF Receiver
21 25D1062 (AG)
Service Procedures
Rf Tuning, Channel A
Dc Voltage Verification
C227
C242
P202
P202
P203
S201
ANTENNA A IN
P202
P202
P203
S201
ANTENNA B IN
DC VOLTMETER
DC VOLTMETER
(OFF)
(OFF)
J302
Figure 5. Dc Voltage Level Verification
1. Measure the dc voltage between the center pin of BNC
connector ANTENNA A IN, located on the receiver rear panel,
and ground. The voltage should measure 12.0
±
0.5 Vdc.
2. Measure the dc voltage between the center pin of BNC
connector ANTENNA B IN, located on the receiver rear panel
and ground. The voltage should measure 12.0
±
0.5 Vdc.