Motorola 6864115B62-C Detailed Service Manual page 322

4-36
R4301
RXSW
5.6K
C4371
C4372
R4302
0.1uF
NU 10K
C4305
NU
1 P1
C4304
C4302
C4303
3.9pF
8.2pF
8.2pF
3 P3
CR4303 CR4302
L4302
390nH
CR4301
L4301
390nH
C4301
100pF
VCTRL_UHF_VCO
R4315 L4311
VCTRL
390nH
2.5 - 11 VDC 0
C4311
C4316
0.1uF 100pF
2.6 VDC (Tx)
VCOMOD_UHF_VCO C4325
3.1 VDC (Rx)
VCOMOD
4.7uF
C4323
NU
VSF
VSF_UHF_VC0
4.58 VDC
VSF
C4308
C4355
C4352
L4305
2.2uF 0.1uF
390nH
0.1uF
L4304
C4309
R4305
390nH
10
100pF
U4301
50U54
C4306
Q4301 VCC_BUFFERS
4.54 VDC
2pF
1 TX_IADJ
2 RX_IADJ
L4303
3 SUPER_FLTR
RESONATOR
0 VDC (Tx)
4 COLL_RFIN
2.45 VDC (Rx)
5 RX_BASE
6 RX_EMITTER
2
C4307 16 TX_BASE
R4303
P2
1.91 VDC (Tx)
15 TX_EMITTER
0 VDC (Rx)
20 FLIP_IN
30 100pF
19 TRB_IN
R4304
TXSW
180
R4311
7.5K
L4313
390nH
C4318
C4381
C4317 0.1uF
NU
C4314
R4312
NU
1.5pF
5.6K
R4314
C4315
270
100pF
C4312
12pF
1 P1
C4313
CR4311
R4313
NU
30
2
P2
L4312
3 P3
RESONATOR
C4321
1pF
4.58 VDC
R4321 R4322
VSF
56K
10K
CR4321
C4324
R4323
C4322
2.4pF
NU 100K
GROUND
VCOBIAS_2_UHF_VCO 0 VDC (Tx)
R4346
2.43 VDC (Rx)
VCOBIAS_2
10K
C4375
NU
5V
5V_UHF_VCO
C4351 C4354 C4353
R4361
0.1uF
100pF 2.2uF 180
L4331
33nH
C4361
C4362
C4332
100pF
NU
NU
L4361
390nH
TXINJ_UHF_VCO
2.35 VDC TXINJ
VCC_LOGIC
(Tx)
4 to 6 dBm C4331
10
R4331
TX_OUT
L4371
8
RX_OUT
4.54 VDC 68nH
(Rx) 6.8pF
12
PRESC_OUT
C4373
7
RX_SWITCH C4363
13
TX_SWITCH NU
NU
C4374
NU
GND_FLAG
GND_BUFFERS
GND_LOGIC
9 11
17
PRESC_UHF_VCO
PRESC
-18 to -16 dBm (Rx)
TRB_UHF_VCO -16 to -11 dBm (Tx)
TRB
0 VDC (Rx)
4.97 VDC (Tx)
4.42 VDC (Rx)
0 VDC (Tx)
TXSW RXSW
4.54 VDC (Tx)
0 VDC (Rx)
C4382 C4383
NU NU
UHF 25-40W Band1 PCB 8486127Z01 / Schematics
Q4333
1 6
2
0 VDC (Tx)
4.7 VDC (Rx)
5V
4
3
R4341
0
C4336
R4337
.022uF
NU
R4342
2.2K
R4332 L4332
R4336
NU NU
NU
C4333 C4335
R4339
NU
100pF
NU
R4338
R4343
NU
Q4331
22 1K
NU
R4347
0
R4340
R4334
NU
R4333
NU
NU
R4335 C4334
NU NU
UHF (403-470 MHz) 25-40W Voltage Controlled Oscillator
L4333
390nH
C4337
RXINJ_UHF_VCO
RXINJ
R4345 13.5 to 16 dBm
51pF
C4339
NU
NU
Q4332
C4338
R4344
51pF
10
SH4301 SH4302
SHIELD SHIELD
GND
ZWG0130523-A