Motorola HLD9675C Guida rapida

C31

NOTES:

1. UNLESS OTHERWtSE INDICATED. RESISTOR VALUES ARE IN

OHMS. CAPACITOR VALUES ARE IN PICOFARADS, INDUCTOR

VALUES ARE IN MICROHENRIES.

2. NON — POLARIZEO CAPACITORS ARE CHIP-T PE UNLESS

OTHERWISE INDICATED.

3. POLARIZEO CAPACITORS ARE CHIP— TANTALUM T PE UNLESS

OTHERWISE INDICATED.

4. "NU" MEANS COMPONENT IS NOT USEO.

5. DC VOLTAGES ARE MEASURED WITH A HIGH IMPEDANCE

(10 MEGOHM) DC VOLTMETER.

6. AC VOLTAGES ARE MEASURED WITH A HIGH IMPEDANCE

AC RMS VOLTMETER,

7. ALL VOLTAGE MEASUREMENTS ARE IN THE RECEIVE MODE

UNLESS INDICATED AS FOLLOWS:

(R) RECEIVE MODE

(T ) TRANSMIT MODE

S. MEASURED IN THE RECEIVE MODE WITH AN ON— CHANNEL

UNMODULATEO SIGNAL AT A LEVEL OF -2 0 D8M.

9. MEASURED IN THE RECEIVE MODE WITH AN ON-CHANNEL

SIGNAL AT A LEVEL OF -2 0 DBM, MODULATED WITH 1 KHZ

AT 3 KHZ DEVIATION (FOR 20/25 KHZ MODELS) OR 1.5 KHZ

DEVIATION (FOR 12.5 KHZ MODELS). MEASURED WITH AN AC

RMS VOLTMETER.

10, SAME AS NOTE 8 EXCEPT WITH VOLUME CONTROL ADJUSTED

FOR 500 MILLIWATTS (2.82 VOLTS RMS ACROSS 16-OHM LOAD

CONNECTED TO THE EXT SPKR JACK).

11. MEASURED IN THE TRANSMIT MODE WITH A 1 KHZ. 11 MV

RMS SIGNAL APPUED TO THE EXTERNAL MICROPHONE INPUT.

CR51 CR201.CR202 CR401

CR402.CR403

CR404.CR406

(п е в m

CR203.CR252 CR 101.CR 102 ®

------------

CR253.CR255 CR405 DS401

E 2 C = = 3C 2 1 e =

B 2 t= = ) В 1 2 C =

C1< = =DE1 3 c z

U410 U411

R P D-91 1 01 -B

Schematic Diagram for HLD9675C and HLD9677C

VHF Main Boards, 46- 74 MHz

(sheet of2)

ТО P1-2

C401

- ) l -

" 33 0401

MMBT3904 r

C403

^ 1 -

R402

4.7K

3 401 R401

7.9488MHZ Ч.8М

L40t 1 0402

i j 33 -p 3.6 10

-C404

Г 7

C405 R403

100K 4.Р5И 64

R404

180K 63

CR407 5 V * -

(TOP VIEW)

CHANNEL

SELECT

SW401

1 = 2

_______

10K

R407

R408

47K R409

47K R410

47K R411

47K 14

✓-C 4 5 9 -

M 0 0 0 '

C460-

1000"

-C475

4 1000

sC456-

o .iu "

-C474

' 1000

sC454-

0.1U

-C476

M000 /•

C473-

1000"

-C457

40.1U

4C472-

1000"

-C455

'0.1U

R418

100K

R4I9

100K TP

R423

100K Ч Ж Э Е Т )

U411

5V REG «SW B+

T J5

J-C 4 0 6

' T ' .01U

C407

4 f -

XIRQ IRQ VDD

VSS

PDt

PDO

PEO

97CR*40I SCI TX

2 N4

----

PB7

U401

MC68HC11A8

PBI

PB2

PD4

PD3

PE7

PE6

PE2

PEI ^ r

55 I

VREF LO

MOO B

PA2

MOO A

N.C.=5,6,8,9.24.26,31.

30,42,44.46,48.49.57.58

PA1

PA6

PC3

PC2

PCI

PCO

1,4,25>,33

SCI RX

, CR402

R420 |

--------

10K , n ,

--------

----------

01-80702489 ВАТТ FILTER BD

1 i i 1

L. ! J

CR403

I <

. BATTER MONITOR

L i! J

C447

- \ ( r

R421

180K

R422

100K 5V (SOURCE)«

. 1SSET 0.1U™Ï* —( RESET )

+-Lc418 -L C419

^ 10U 'J' .018U

U 404

5V REG

Ï.7J3.4

У о

OFF

(P/0 VOL)

"-L C421

4 0.47U

(SOURCE)’'

r-|

-------------

T S —

^ 3 9 Fl

------

1—lï

1 i T „ ,7 Г

i -L ei -C2 L2 4 - C4 i

1 'T4 NU !> '39 s:j9i,

1i •

-{SCI BATTER

T t - * - HCHG +

4CHG -

* CONNECTION VIA CHASSIS

-Ç SW B + )

...

5V )

! TCR407

S NTH LE

PAC LE

SR CLOCK

29 SR DATA

62 LOCK DETECT

CARRIER PETECT

. ALC MONITOR (NU) R*76

100K _|_

CLOCK

R472 10K

- (S N LE )

4 PAC LE )

10K R475

J2 5 M V R MS (2 5 K H Z M ODEL)

16 5M V RM S ( 1 2 5 K HZ M ODEL)

(N O T E 9 )

--------

"Tc458

I NU

- (LOCK PET)

{ CSQ OET)

DATA 5v

C408

J T - )! -

■ i O.tu

52 AFIC ENABLE 33

41 PL/DPL DECODER OUT 27

35 PL CLOCK 32

2 15 M V R U S (2 5 K H Z U O D E L )

1 05 U V R U S (1 2 5 K HZ U O DE L )

(N O T E 9 )

VCO MOD 2 SV0C

10ÖK

37 R425

39 220K

R426

-------1

-------------

'2 SVDC

169 C415 \ 22

н Н Ь - П

4700 =

-(S O ATTN IN)

C435

н е

0.1U

JfO M V RMS (2 5K HZ MODEL)

ri 50MV RMS (12 5K HZ MODEL)

(N OT E 11)

- CSQ ATTN PUT)

—(PET AUDIO)

ЧМОО IN)

N.C,=2.36.37 J-C 43 4

0.1U

UNATTN RX OUT

PRE TX IN

U406A4

CENTER-SUCER-L C416

^ O . I U

п _ г и ^ р- р

1MSEC

(NOTE 9) VQX pe tEQT

ALERT TONES

Schematic Diagram for HLD9675C and HLD9677C

VHF Main Boards, 46- 74 MHz

(sheet2 of2)

PCP

24 П з"

C412tI_C413

1U /T ' 0.47U

OPTION

TX AUDIO

FROM U411-4

5VDC

UNMUTEO

FLAT RX

AUDIO

_______

________

R492

R493 J-C 4 5I

330K ^ .015U

C445

R462

470K

Л ?6iT

C424

- \ ( r

R448 240

0409

MMBT3906

R463

47K

45UV R US U407r\ + I 5-

(NOTE / O 7F1 t> -

■ C425

.039U

| 6 _

№7BX V + ^ ł —

C480

— ^1—

C426

- ) h -

018U

C427

- ) | -

г R449

f 100K

TO U40I-PIN 54 < -

0408

2 5v MM8T3906

» 4

1R494

ЮОК

R503

+_Lc452

^ 4 .7 U

C428

4 f -

L403 ■ f

C436

----------------

K -

VR401 470

-----------------

11 0M V RM S

(N O T E 1 1)

/ 33

0.39

R451

2.2K

J-C481

150

R452

180K ~ E

= 0407

MMBT3906

l©

A UD IO PA

LO=MUTED

Hl^ENABLED

2.2K

C463

ч < —

L404

0.39 CR406 9“

+— И - -4 5V

C429

4700

C430

470

M IC A UD IO

- H l^M U T ED

LO=ENABLED

DE—EMPHASIS AMP

C431

45QM V RM S

(N O T E 9 )

/R455

----------

--------

R457 .012U

68K SW B4

-------

820K

0.47U

170MV RMS-

(N O T E 9 )

VOLUME f

PI - KE PAD/DISPLA

C442

J5MV R MS (NO T E 1 0 )

0VDC

0.39 /

2 8 J V R M S /

У (N O T E 1 0)

L406

' _ L c443

^ 1000

3MK40I

INT MIC

LS401

INT SPKR

160

RPD-91102-C

12 6880901Z93-C ugust, 1996

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