Main Board 8466519A02_A / Rf_Fracn - Motorola MTM700 Detailed Service Manual

Transceiver 400MHz (PCB No. 8466519A02_A): SCHEMATICS, PCBs and PARTS LISTS
G
3V_AGC
3V3_FN G
(to ESCORT)
5V_FN G
(SOURCE)
VCTRL G
3V locked
LOCK_FN_FN_1
0V unlock
LOCK_FN G
TXH G
R5301
2.2K
TP5302
G
RXH
RX 4.3V
TX 0V
G
REF16_8_FN_FN_1
G
REF16_8_OSC_FN_1
SSI_SYNCB G
G
SSI_FSYNC
SSI_DOUTA G
SSI_DOUTB G
SSI_CLK G
G
R5321
3V
100
C5307
C5306
10uF
0.1uF
C5311
.01uF
3
K3 A3
2
K2 A2
C5312
1
K1 A1
.01uF
D5301
C5313
.01uF
C5314 D5302
.01uF
3
K3 A3
2
K2 A2
1
NC K1 A1
13.6V
L5309
2.2uH
C5309
C5315
1.6V average
C5316
.01uF
3300pF
10uF
R5302
C5305
820
R5315
.01uF
C5301
100
R5303
.01uF
1.8K
R5304
330
C5303
0.1uF
Q5301
2.7V@380MHz TX
2.9V@380MHz RX
5.7V@405MHz RX
9.4V@430MHz RX
G
SSI_SYNCB
SSI_SYNCB_FN_2
16.8MHz
G
SSI_FSYNC
1.6V average
SSI_FSYNC_FN_2
TP5331
G SSI_DOUTA
SSI_DOUTA_FN_2
G SSI_DOUTB
SSI_DOUTB_FN_2
G SSI_CLK
SSI_CLK_FN_2
G
SPIA_CS4_ABA
SPIA_CS4_ABA_FN_2
MTM700 Mobile Radio / Detailed Service Manual
U5321
LP2980
3.3V
5 1
VOUT VIN
4 3
NC NC ON_OFF*
C5308
GND
0.1uF
2
5V
R5311
NC
0
C5365
0.1uF C5321
C5322
4.7uF
.01uF
L5301
5V
390nH
4
5
R5312
R5335
6
39K
100
C5318
4.7uF
C5331
0.1uF
4
NU R5336
5
6
R5314
NC
D5331
47K
R5313
NU
0 C5319
NC_D3221_2
0.1uF
1.6V
C5317
average
C5332
0.1uF
22pF NU
NU
R5316 C5333
100
180pF
25
WARP
16
NC
INDMULT
28
SFOUT
46
ADAPTSW
4
LOCK
45
IADAPT
43
IOUT
R5331
NU
38
NC
TEST2
C5334
37
47K NC
R5333 TEST1
0.1uF
U5331
R5332 100K
3
47K NU AUX4
2
AUX3
NU 1
AUX2
48
AUX1
63A27
11
NC
VMULT4
12
NC VMULT3
14
VMULT2
15
VMULT1
16.8MHz
41
R5334
NC
1.8V average MODOUT
19
FREFOUT
100
C5335
24
NC XTAL2
56pF
23
XTAL1
NU
3V
3V
L5361
C5353
C5351
.01uF
2.2uH
0.1uF
R5351
C5363
1K R5355
.01uF
R5352
1K
47K
C5352
R5354
Q5351
4.7K
1000pF
R5353
100

Main Board 8466519A02_A / RF_FRACN

U5322
ADP3300
1
R5322
GND
6 3
68
ERR SD
4
OUT IN
5
R5323
NR
2
68
C5323
C5324
0.1uF
10uF
G
3V
Q5332
R5330
30K 330K
R5339
Q5331 G
C5336
8.2K
.01uF
G
31
NC3 NC
29
NC
NC2
17
R5337
NC
NC1
C5337
100K
2.3V
NU
42
CCOMP NC
18
REFSEL NC
2pF
C5338
32
PREIN
27 100pF
SFBASE NC
26
SFCAP
C5344
C5339 C5343
39
BIAS2 NC R5338
1000pF
4.7uF 4.6V 10uF
40
G
BIAS1
68K
21 C5345
VBPASS NC
.01uF
35
NC
PVREF
3Vpp
30
SFIN 2.8V average
7
DATA
10
MODIN NC 3Vpp SPIA_DATA_FN_1
2.8V average
9
CEX
3Vpp
8
CLK SPIA_CS1_FN_1
1V average
C5340 C5341 C5342
33pF 33pF 33pF
If ERIC TCXO (3 x 5 mm)
will be used then change the following parts
Change Y5362 from 5102845C17 to NOTPLACED
R5361
4.7K Change Y5363 from NOTPLACED to 5102463J73
Change D5361 from NOTPLACED to 4813830A08
Change R5364 from 0662057B47 0 to 0662057A18 51
VR5361
3V
C5361
R5364
0.1uF
3V
C5362
51
.01uF
Y5363
1.4V
NC
typ. 16.80MHz
KT19
Y5362
1 1
16.8MHz
VWARP
VCON
NU
2 4 4 2
GND VCC VCC GND
OUTPUT
C5366 OUT
0.1uF
3 3
DC Voltages measured with DMM in RX mode
8.1.2 - 13
G 9V3
VCOBIAS_RX
ESC_CPB
VCOBIAS_TX
G
PRESC
VSF
G SPIA_DATA
G SPIA_CS1_FN_PCIC
G
SPIA_CLK
ZWG0130864-A