Motorola HT 1000 service manual HearClear Option, U701

HI_CLMP_EN

COMP_EN

LODSAB

HCI_DIS

ASFIC_MIC_AUD_out

Vcc

3.7Vdc

C732

C776

C715

C711

C716

C708

0.1uF

1uF

.01uF

4.7uF

.01uF

0.1uF

C720

C719

C714

R729

0.1uF

.01uF

0.1uF

47.5K

FF_EN

HearClear Option

C608

R726

R712

UNIV_IO

UNIV_IO

47K

SQ_DET

R625

C683

SQ_DET

R624

CHACT

CHACT

*

*

*

2.5Vdc

PWR_RST

PWR_RST

J2

R628

R626

C2

C1 B2 H3

J3 A5

C5 B6

D6 E7

F8

H1

H2

200Hz RX MDC ONLY

*

VDD

LOOPCAP

UNIVIO

TIMINGCAP

RXLIMCAP

LCAP

LOWSPCAP DCAP BUFFDISC

VAGCAP

BIASRES

SQDET

CHACT RESET

B1MDC_REF

*

PL ONLY

2.5Vdc

MDCREF

MDC_REF

SCK F1

D1UPCLK

SCK

CLK

SB+

PL_TXC3

UPCLK

E2

UPCLK

PL_TX

PLCLK

XTALOUT

2.1_MHz

E1

XTALIN

PLLIM

A4PL_RX

PL ONLY

PL_RX

TX_DATA

TX_DATAG1

TRKCLKIN

RXLIMOUT

G4RX_DATA

MDC ONLY

RX_DATA

32

MDC TX ONLY

LG_DTMF

LG_DTMFG2

DTMFCLK

RXAUDOUT

J4

2.5Vdc

ASFIC_SEL

F2

PGMENAB

UNATRXOUT

H5

C718

8

C682

23

VCC

NFILOUT

C611

C680

DATA

DATAE3

DATA

U701

MICAMPOUT

A6

VOX

0.1uF

RX_AUDIO

C686

ICENAB

FFOUT

17

*

H4

EXTVOLIN

VOXO

C6

*

25

31

*

J5

ASFIC

F7

ASFIC_MIC_AUD_out

*

18

CPNENAB

EXPOUT

21

RX_IN H6

EXPAUDIO

DACO

G7

FFENAB

CBUFOUT

RXIN

REFATN

3.8Vdc

28 HIENAB

COMPOUT 19

R620

AUX_RX

AUX_RXJ6

AUXRXIN

PREMP

C8

VCO MOD ATTENUATOR RATED 200mVpk-pk/kHz

U601

4

*

A7

EXTMICIN

VAGOUT

D8

VCO_MOD

27

EXPIN

C7

H8

VCO_MOD

22

LODSAB

26

C609

D7

TXIN

VCOATN

B5

HCI_DIS

CBUFIN

EXPBYP

AUXTXIN

GCB0

HI_CLMP_EN

C787

15

23

*

J702_7

C712

H7

A3

*

16

RSSIIN

Hear

COMPCAP

3

J7

SQIN

GCB1

B4

COMP_EN

7

FFIN

VAG

14

C688

SQIN

0.1uF

B8

PLIN

GCB2

B3

AUPA_EN

AUPA_EN

NFILIN

Clear

FFCNTL

20

E8

MICIN

GND10

GND11

GND12 GND13

GCB3

A2

EXT_SPKR_SEL

5

NC

CLIPREF

*

RSSI

GNDD

GND1

GND2

GND3

GND4

GND5

GND6

GND7 GND8 GND9

GNDA

GCB5

EXT_SPKR_SEL

11

C4

LODSAB

29

CFBBYP

9

G8 LIMIN

GCB4

R623

13

NC1

NOISHLD

24

* C736*

D2 D3 F3 G3 D4 E4 F4 D5 E5 F5 G5 E6 F6 G6

B7

VOX

NC2

COMPBYP

*

10

NC3

HCIDSAB

6

R622

R621

C674

12

GND

30

*

*

*

C801

NC4

EXPADJ

33pF

C780

C713

C777

1

.01uF

0.1uF

C800

470pF

33pF

C677

C684

C678

C681

C675

*

*

*

*

*

R755

C710

10K

0.22uF

DISC

C685

RSSI

RATED 2.5Vdc

C717

*

282mVpk-pk/kHz

Vcc

Vcc

0 Vdc

C707

*

C735

C775

C679

100pF

330pF

C701

C705

0.1uF

C706

R756

0.1uF

R701

0.1uF

L701

2K

L710

2K

C779

R703

0.1uF

390nH

R702

390nH

EXT_MIC

INT_MIC

470

C778 470

4.9Vdc

C721

C702

4.9Vdc

100pF

C703

R704

100pF

.022uF

.022uF

4.7K

63B81097C09-O

NCN6129C, NCN6138A, NCN6140A/B, NCN/PMCN6140C, NCN6141A, NCN6145A/C, NCN6146A,

92NTN7089C AND PMCN6140C CONTROLLER BOARD ANALOG SECTION SCHEMATIC DIAGRAM