TM840 Service Manual
84
DEFLDO1 DEFLDO2 VLDO1 VLDO2
0
1.2 V 3.3 V
0
1
0
0
1
1
1
2.8 V 3.3 V
1.2 V 1.8 V
1.8 V 3.3 V
PIN
LEVEL VOLTAGE
DEFDCDC1
DEFDCDC1
DEFDCDC1
DEFDCDC1
DEFDCDC1
DEFDCDC1
DEFDCDC2
DEFDCDC2
DEFDCDC2
DEFDCDC2
DEFDCDC2
DEFDCDC2
DEFDCDC3
DEFDCDC3
DEFDCDC3
DEFDCDC3
DEFDCDC3
DEFDCDC3
Imax =1 A
Imax =1.5 A
Imax =1.2A
Imax =200mA
Imax =200mA
I 2 C a d d r e s s
:
1 0 0 1 0 0 0
ADD C298
ADD 3V_RTC NET
+
C23
22uF 20%
10V
1
DEFDCDC3
2
VDCDC3
3
PGND3
4
L3
5
VINCDDC3
6
VINDCDC1
7
L1
8
PGND1
9
VDCDC1
10
DEFCDCD1
11
H
O
T_
R
ESETN
12
DE
FLDO1
13
DE
FLDO2
14
VSYSIN
15
VBAC
KU
P
16
VR
TC
17
A
G
ND2
18
VL
D
O
2
19
V
INLDO
20
VL
D
O
1
/LOWBAT
21
LDO_EN
22
DCDC3_EN
23
DCDC2_EN
24
DCDC1_EN
25
TRESPWRON
26
/RESPWRON
27
/INT
28
SDAT
29
SCLK
30
/PW
R
FAIL
31
DE
FDCDC2
32
V
DCDC2
33
P
G
ND2
34
L2
35
V
INDCDC2
36
VC
C
37
PWR
F
AIL
_
S
N
S
38
LOWB
A
T
_S
NS
39
A
G
ND1
40
PWR
PAD
41
U3
TPS65023
C22
1000PF 20% 50V
C34
100P
20%
50V
C18
0.
1uF 20%
50V
R43
0
R15
12K 5%
C12
39PF
R2
332K
L1 NR8040T220N_22uH
C11
0.
1uF 20%
50V
+
C27
10uF 20%
25V
C36
10pF 5%
50V
C6
0.
1uF 20%
50V
R39
10K 5%
R19
47K 5%
SN
S
5
6
VCC
7
SHD
12
IN+
1
TMR
10
GND
13
GND
GATE
4
FLT
8
OUT
3
FB
2
AOUT
11
EN
9
U2
LT4365
R40
10K 5%
TP1
D5
NC
+
C20
47uF
100K
5%
R9
100K
5%
R10
150K
5%
R11
D4
MA2S111
1
BOOT
2
VIN
3
EN
4
SS
VSNS
5
COMP
6
GND
7
PH
8
9
GND
U1
TPS54331
Q3
DTC144EE
21
D2
S
M
CJ20A
C35
10pF 5%
50V
470K
5%
R13
1
2
D1
B330A
1
2
J1
CON2
L2
2.2uH
R26
10K
5%
C1
0.1uF 20% 50V
C32
100P
20%
50V
+
C7
47uF 20%
16V
C13
10nF 10% 50V
+
C3
100uF 20%
25V
R36
33K
5%
+
C9
22uF 20%
10V
R12
2K 1%
+
C30
10uF 20%
16V
D6
MA2S111
+
C5
47uF
L3
10uH
Q4
DTC144EE
100K
5%
R16
R8
0.005
R33
10K 5%
R18
2K
5%
C24
0.
1uF 20%
50V
Q5
DTC114YE
R30
NC
Q2
ST2301
C10
0.
1uF 20%
50V
+
C26
10uF 20%
25V
R7
51K
R37
10K
5%
R1
10K 1%
1
2
3
Q1
NMOS
C2
4700P
+
C14
100uF 20%
25V
R21
10 5%
+
C28
10uF 20%
25V
+
C19
1
0
u
F
2
0
%
1
0
V
C25
2.
2uF 20%
50V
R17
NC
R6
68K
C33
100P
20%
50V
+
C4
4.
7uF
R32
10K 5%
C21
0.
1uF 20%
50V
D7
MA2S111
L4
2.2uH
C16
0.
1uF 20%
50V
R4
10 5%
R42
10K 5%
R34
10K 5%
R20
100K 5%
R25
10K 5%
R24
10K
5%
+
C17
47uF 20%
10V
R3
0.005
+
C31
10uF 20%
16V
R35
10K
5%
R41
0
R23
10K 5%
R5
100K
5%
R31
10K 5%
C15
0.
1uF 20%
50V
R14
10K
R22
100K 5%
+
C29
10uF 20%
16V
R29
NC
C298 1uF 20% 25V
R132
20K
5%
FB73
FE1-BLM21PG221SN1
C383
5
D8
SM3
M
A1
R124
transient
volt
age suppressors
+
47uF
R391
270R 1%
R392
5.
1K
1%
R412
51K 1%
R413
10K 5%
+
C427
4
.
7
u
F
2
0
%
1
6
V
N
C
R28
2K
5%
5V
5V
1V8
3V3
1V2
5V
5V
3V3
5V
1V8_LDO
5V
3V3_LDO
5V
1V8
1V2
5V
5V
5V
VCCIN
5V
3V
3_OMA
P
DC13V8
DC13V8
I2C0_SCL
I2C0_SDA
OMAP_RESET#
POWER_HOLD
PWR_KEY_DET
POWER_KEY
IGN_SENSE
DCDC_EN
DCDCEN_2
DCDC_EN
DCDCEN_2
DC13V8
VDET_1
3V3
3V3
VDET_2
Summary of Contents for TM840
Page 1: ...TM840 Service Manual I ...
Page 19: ...TM840 Service Manual Figure4 3 4 Click Next to keep on installation 16 ...
Page 60: ...TM840 Service Manual Figure1 TM840 400 470MHz Mainboard Top Side PCB View 57 ...
Page 61: ...TM840 Service Manual Figure2 TM840 400 470MHz Mainboard Bottom Side PCB View 58 ...
Page 62: ...TM840 Service Manual Figure3 TM840 400 470MHz Keypad Board Bottom Side PCB View 59 ...
Page 63: ...TM840 Service Manual Figure4 TM840 400 470MHz Keypad Board Top Side PCB View 60 ...
Page 82: ...TM840 Service Manual Figure7 TM840 136 174MHz Mainboard Top Side PCB View 79 ...
Page 83: ...TM840 Service Manual Figure8 TM840 136 174MHz Main Board Bottom Side PCB View 80 ...
Page 84: ...TM840 Service Manual Figure9 TM840 136 174MHz Keypad Board Bottom Side PCB View 81 ...
Page 85: ...TM840 Service Manual Figure10 TM840 136 174MHz Keypad Board Top Side PCB View 82 ...