Shure UC2 Service Manual page 12

Shure UC2 Hand-Held UHF Transmitter
Test Set-Up
P201
D201 TP18
U200
C200
P200
J205
Q220
RED
RF GND*
S302
J2*
TPRF1
GREEN
S301
*J2 and R40 are placed for JA, JB frequencies only. RF GND is accessed thru a hole in the pcb.
C251
J202
TP2
TP16
J201
D304
D303
D302
D301
TP+9
U5
J300
Service Procedures
GND
+9V
Q203
Q202
S200
Q204
Q209
U205
TP10
RF SIDE 1
R40*
Q304
U501
C314
Y302
C223
C221
C213
C210
TP4
Q210
TP10
Q211
TP6
RF SIDE 2
C303
C324
TP30
U306
U304
C353
Figure 5. UC2 Major Test Component Locations
1. Use the PT1843 cable to connect the audio board to the rf board
through the 11-pin board interconnects (J200, J300, side 2).
2. Apply + 9 Vdc across the battery terminals (J201, J202, side 2).
3. Set the audio GAIN potentiometer (R207, side 1) to minimum,
full counter-clockwise (CCW).
4. See Table 2 for frequency settings.
12
AUDIO SIDE 1
C222
+5V
Q213
C216
Q212
U202
Q201
TP4
TP6
Y200
1
U302
R320
C510
TP30
Q301
TP+9
AUDIO SIDE 2
TP18
+5V
C227
Q3
Q2
+9V
C243
L207
J200
Q305
Q303
TPRF1
C336
C315
L300
C214
R7
U201
PAD
R39
P204
U303
P203
Y301
Q1
L1
U2
1
J301
L308
U1 U1
C347
J302
25A1044 (RI)