![background image](http://html.mh-extra.com/html/motorola/mth500/mth500_service-manual_246020125.webp)
MTH500 Detailed Service Manual - MTH500 Audio & DC Block (Sheet 2 of 2)
68P02963C70-O
6 - 23
MTH500 Audio & DC Block (Sheet 2 of 2)
42
43
44
SHEET 8 OF 9
79B02964C09-O
8
6
7
9
10
5
14
- Vibrator
13
12
DNP
1
2
3
4
11
C605
VSIM
TP602
C663
R649
3.3n
PGM1 = 0
VIB_VCC
External LP2980 regulator 3.0V for QVCCM
Bias current for the A/D inputs
VTS_2.3V
WPIC, ODCT, LVFracN, ...
V4_2.775V
V1_2.775V
Dual band
NU
VREF2_2.775V
VSIM1 -
PGM2 = 1
DNP
DNP
DNP
PGM0 = 1
TP connected to Redcap MUX_CNTL pin
Leds and Backlight
- 3.6V nominal - RF PA, TX Pre-drivers, ODCT Up-mixer
- RAW_B+ thru ferrite bead with bypass caps
- 5.0Vdc to WPIC Charge Pump
DC Power Supply Distribution
Digital section - Redcap, Flash, RAM, Display
- Audio
- 5.6Vdc (GCAP3 switching regulator #2 - BOOST) to the input of DSC regulator (5.0Vdc) to the WPIC Charge Pump , VSIM1
- 1.875Vdc(GCAP3 switching regulator #1 - BUCK) to REDCAP core
V2_2.775V
V3_2.775V
5V_RF
RAW_B+
PWM2_5.6V
PWM1_1.8V
RF TCXO
VREF1_2.775V
SW_B+
Battery Voltage for CE bus with the Current limit function
C647
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
180.p
C619
E604
BLM11B601S
100.n
BLM11B601S
E603
4.7u
C629
R648
C659
2.7K
4.7u
4.7u
C658
4.7u
C609
C657
V3_2.775V
C613
4.7u
V2_2.775V
4.7u
10.u
C610
R623
0.
4.7u
VREF2_2.775V
V4_DRV
C654
1.u
VREF1_2.775V
10.u
V1_2.775V
C628
C611
100.n
C608
C616
10.u
C607
R603
100.n
75K
100.n
C606
1.u
C635
C604
100.n
C621
1n
C620
R601
33K
180.p
C625
100u
180.p
390.p
C664
100
4.7u
C612
C660
4.7u
C661
4.7u
C636
390.p
R632
100
R631
100
10n
C655
R629
6.2K
0.
R627
R624
0.
0.
R626
0.
R625
R628
0.
R608
22K
C634
1.u
C618
C617
180.p
180.p
E602
BLM11B601S
E601
BLM11B601S
C603
33K
1n
R612
6.2K
R611
R610
22K
C602
10n
1.u
C633
R604
75K
C622
390.p
R602
V4_2.775V
75K
100.n
C644
Q602
1
2
3
SPKR-
SPKR+
VA_SPKR
MUX_CNTL
INT_EAR-_PHF_EAR
Содержание MTH500
Страница 10: ...Contents x 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 14: ...Foreword xiv 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 18: ...Overview 1 4 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 50: ...Theory of Operation 2 32 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...
Страница 76: ...Troubleshooting 3 26 68P02963C70 O Offset VCO Test ...
Страница 78: ...Troubleshooting 3 28 68P02963C70 O This page left blank intentionally ...
Страница 82: ...Programming the Radio 4 4 68P02963C70 O This page left blank intentionally ...
Страница 100: ...Maintenance 5 18 68P02963C70 O Figure 23 Exploded View 1 2 3 4 5 7 6 X6 8 ...
Страница 101: ...Maintenance 68P02963C70 O 5 19 Figure 24 Exploded View of Chassis Assembly 9 12 13 10 11 14 ...
Страница 102: ...Maintenance 5 20 68P02963C70 O ...
Страница 103: ...MTH500 Detailed Service Manual COMPONENT BOARD LAYOUTS 68P02963C70 O 6 1 Component Board Layouts ...
Страница 104: ...MTH500 Detailed Service Manual COMPONENT BOARD LAYOUTS 6 2 68P02963C70 O This page intentionally left blank ...
Страница 109: ...MTH500 Detailed Service Manual Schematic Diagrams and Parts Lists 68P02963C70 O 6 7 Schematic Diagrams and Parts Lists ...
Страница 134: ...SCHEMATIC DIAGRAMS MTH500 Flex CD 6 32 68P02963C70 O This page left blank intentionally ...
Страница 140: ...Replacement Parts and Kits 6 68P02963C70 O ...
Страница 141: ...Replacement Parts and Kits 68P02963C70 O 7 ...
Страница 142: ...Replacement Parts and Kits 8 68P02963C70 O ...
Страница 144: ...Test Equipment Service Aids Tools A2 2 68P02963C70 O THIS PAGE INTENTIONALLY LEFT BLANK ...