Shure U4D, Service Manual

Page: 36 / 47

Shure U4D Dual Diversity UHF Receiver
35 25D1062 (AG)
Replacement Parts and Drawings
Replacement Parts and Drawings
U4D Model Variations
Different frequency versions of the U4D receiver are currently available
for use in various countries. Each version is identified in the table below by
country code, frequency range, and printed circuit board version.
Table 3
U4D Model Variations
COUNTRY
CODE
FREQUENCY
RANGE
COUNTRY
DESIGNATION
RF-AUDIO
PC BOARD
NUMBER
UA 782–806 MHz U.S.A. and Canada 90UA8902
UB 692–716 MHz U.S.A. 90UB8902
MA 782–810 MHz Germany 90MA8902
MB 800–830 MHz Europe 90MB8902
M3 692–716 MHz Europe 90M38902
R7 782–810 MHz Europe 90R78902
R2 800–830 MHz Europe 90R28902
MC 774–782 MHz Netherlands 90MC8902
R3 774–782 MHz Netherlands 90R38902
MD To create an MD board, order the 90MB8902 PCB and install the
MD EEPROM (188R131MD).
II 806–810 MHz Japan 90II8902
JB 806–810 MHz Japan 90JB8902
KK 854–862 MHz United Kingdom 90KK8902
R6 800–820 MHz Scandanavia 90R68902
S2 838–862 MHz England 90S28902
Note: The PC board number is a family panel part number which
includes the main PCB and the front panel digital PCB.
Parts Designations
The following comments apply to the parts list and the schematic:
Resistors: Unless otherwise noted, all resistors are surface-mount
with
1
/
10
W
rating and 1% tolerance.
Capacitors: Unless otherwise noted, non-polarized capacitors are
surface-mount
NPO
dielectric types with a 100
V
capacity and a 5%
tolerance, and polarized capacitors are tantalum types.