Motorola HT 1000 service manual U102

NOTES:
1.	UNLESS OTHERWISE STATED RX DC VOLTAGES ARE MEASURED WITHOUT RF INTO J401.	B+
		E101

2.RX RF VOLTAGES IN dBm ARE MEASURED WITH A 1.5 pF CAPACITOR IN SERIES WITH

	THE 50 OHM ADAPTER OF AN RF MILLIVOLTMETER AND AN RF LEVEL OF -20 dBm INTO J401.						NC
3.	VOLTAGES IN mV ARE MEASURED WITH A X10 SCOPE PROBE.	C163	C164	C101	C102	C103
4.	THESE LEVELS MEASURED BY REMOVING R52.	51pF	100pF	0.1uF	330pF	10uF

5.MEASUREMENTS MADE ABOVE CROSSOVER FREQUENCY.

6.MEASUREMENTS MADE BELOW CROSSOVER FREQUENCY.

				7.	*	= NOT PLACED	6.5Vdc (TX)
2	PWR_OUT		PWR_IN	5				6	RF_OUT	RF_IN	1
						CR103					3
4		U104		7		C133	2		U105	V_CONTROL	5

	R101	L101
	0	1uH		2.2Vdc (TX)
				B+
C104	C108	C105	C106	Q110
3.3uF	330pF	330pF	10uF

TX_LO

REV_PWR

FWD_PWR

C116

B_PLUS

6 REV_TRM

FWD_TRM 3

3

1

C121

5V_REG

R114

RF P.A.

SWB_PLUS

4

1.8pF

1pF

GND GND GND GND

GND GND GND

GND GND GND

330pF

15K

C107

CR102

330pF

7

8

9 10 11 12 13 14 15 16

3

2

R139

C118

C153

C152

R127

R126

1 NC

DAC CLK

D

100K

0.1uF

39

51

330pF

330pF

C161

5Vdc (TX)

R111

C3

B2

A2

A3

B3

C132

C156

0Vdc (RX)

2.5Vdc

0.1uF

R110

5.6K

SEL

CLK

DATA

5V

RESET

1uF

6.8pF

2.2K

R129

D1 SW2

4.7K

NC B5

NC

EN_BIAS

A4

E2

SW_C

U102

TX_DA

C4

R113

5Vdc (RX)

0.5Vdc, 136MHz

D/A IC

2.45Vdc (TX)

0Vdc (TX)

0Vdc, 178MHz

D4

REF_DA

SC4

B1

33K

5Vdc (TX)

D5

R_T

SC3

C2

0Vdc (RX)

R106

SB+

D2

SC1

GND2

GND1

EN ANT RX DA

1

Q105

C123

3.3K

C139

SC2

SW1

5

Q104

Q107

R115

0Vdc (RX)

0.1uF

*

1

5

3

2

Q108

C1 E3

E4 D3

B4 C5

4

C154

C162

5

1

180K

NC

NC

U103

4

330pF

330pF

R116

5V REG

5Vdc

5V_REG

4

4

130K

2

3

1 OUT

GND

IN

3

0Vdc (RX)

2

3

5

1NC

3

2

C126

C128

3.3uF

2

1uF

1

TP10

6.3Vdc (TX)

C146

330pF

R117

L131

R199

C130

C129

ANTENNA

*

11pF

1pF

47K

1uH

S101

CR108

6.7Vdc (RX)

L128

L126

RF SWITCH

5.6Vdc (TX)

7.4Vdc (RX)

12T

L127

12T

P401

J401

L122

1

3

9T

C147

.022uF

1uH

GND

2

C141

R72

G1

C151

C150

C149

C148

CR109

330pF

100

4

TO UNIVERSAL

10pF

20pF

20pF

5.1pF

G2

CONNECTOR

L121

L130

1uH

B+

LCK

Q101

4.9Vdc (TX)

0Vdc (RX)

C109

NC NC

1uF

D3 E4 E3 C1

A3

RE_DET

BPOS

RECV5V BIASPA BIASRT

PA_CNTL

B5

E2

ICATH_2

PA_OUT

B4

C2 NC

D1

TX12

ANODE_2

C5

DA_REF

U101

RX_1

D2 NC

B1

TX ALC IC

TEMP_SENSE

D5

ANT_SW_BS

IN

5V_TX

C4

B2

CATH_1

INT_CAP_OUT

C3

ANODE 1

GND BIAS EN INT CAP_

L105

A2 B3 D4 A4

C115

.033uF

1uH

C135

R112

330pF

1MEG

2.5Vdc (TX)

5Vdc (TX)

3.2Vdc (TX)

0Vdc (RX)

C113

330pF

4.6Vdc (RX/TX) 4.3Vdc (RX) (NOTE 4)

L32

2.2uH

R102

4.7K

2.9Vdc (TX) 0Vdc (RX)

RT101

C111 50K 330pF

AGC

8

EXTERNAL

1uH

C71

330pF

2

ANTENNA

GND GND1

GND2

GND3

CR12

TO UNIVERSAL

C112

C140

R131

*

NC

1

CONNECTOR P402

-49dBm

330pF

100K

EXT. ANT.

5

6

7

9

3

1

7.3Vdc (RX)

2

FREQ

V (RX)

R4

R5

C77

136MHz

1.0Vdc

R8

156MHz

2.3Vdc

10K

10K

0.1uF

178MHz

4.0Vdc

L8

470

4.8Vdc

-62dBm(NOTE 4)

C4

6

150nH

CR11

330pF

L12

L14

L6

L7

L9

L10

L3

L4

L13

Vcc

5T

470nH

5T

68nH

120nH

2 IN

OUT 7

100nH

56nH

47nH

39nH

U1

C7

CR1

CR2

CR6

CR7

-34dBm

1.4Vdc

-42dBm

RF AMPLIFIER

R1

2.7pF

C97

4 ABP

AG2 5

10

13pF

GND1

GND2

GND3

L16

C9

1

3

8

0.6Vdc

C11

C90

C16

C6

C8

L11

4T

*

R2

.01uF

4.3pF

5.1pF

6.2pF

16pF

4T

56K

CR3

CR4

CR8

CR9

C14

C13

22uF

.01uF

C12

C72

R70

*

330pF

1.5K

4.7Vdc (NOTE 4)

4.8Vdc (RX)

0.1Vdc (TX)

0.4Vdc (RX)

C31

C15

.01uF

100pF

C83

C85

R7

.01uF

10uF

100

T2

3

1

5

L5

C80

C99

1

8

RF1

BVDD

IFP

12

2

47nH

33pF

33pF

5

C86

2

7

RF2

U2

IFN 11

3

4

6.2pF

MIXER

BBP

2

4

3

14

LOIN

BUFFER

BDIV

4

4Vdc

1Vdc

GND GND1 GND2

GND3 GND4

GND5

T1

C84

C82

.01uF

.01uF

L30

C98

1

5

6

9 10 13

C87

C88

16pF

8.2pF

0.047 uH

330pF

63B81097C02-O Sheet 1 of 2

IF

-31dBm (RX) 0.5Vdc

RX_LO

NUD7091B, NUD7092B, NUD/PMUD7095B, AND NUD7096B VHF (136-178MHz)

64TRANSCEIVER BOARDS’ SCHEMATIC DIAGRAM (Sheet 1 of 2)