Telex BTR-200 User Manual

-----------------------~--~--_._

Ci

....

~

....I

Wi..

W~

-s;:

><

.:2

ca

c:

::J

-

ca

_-

_.

c)

lll~L

lOO~

...

it

3=

~

ttl

a~~~

~

d

a:

l~iDD

~

Q(/):Em

Z

<t

fa

80

enD:

enW

>-

~

mm",,~~

..J I-en

:E

w

.-"\

j

W

.J

W

X

€l

I-

Table

of

Contents

Page

Chapter

General Description
Specifications BTR-200
Controls and Connections 1-2

Front Panel 1-2
Rear Panel 1-5

1

1-1
1-1

()

Chapter

Audio Boards ......•.................................................................................................................................... 2-1

Receive Board 2-2

Transmit Board 2-3

Chapter

BTR-200 InstrumentDisassembly 3-1
Transmit Board 3-2

Circuit Descdption 3-2
Alignment Procedure
Voltage Tables - TransmitBoard (878521) 3-3
PCB Transmit Assembly (878521-*)(palts List) ; 3-7

Receive Board 3-9

Circuit Descdption (PCB 70714000) 3-9
Circuit Descdption (PCB 750309)) 3-9
Alignment Procedure 3-10

Voltage Tables - Receive Board (70714000) 3-14
Voltage Tables - Receive Board (750309) 3-15
PCB Receive Assembly 878522* (Parts List) 3-21
PCB Receive Assembly 878662* (Parts List) 3-24

Audio Board

Audio Board Circuit Description 3-27

Alignment Procedure 3-29

2 - IdentificationofCircuit

Board

Revision

and

Version

3 - Transmit, Receive & Audio Circuit Boards

: 3-2

Receive Board (70714000) 3-10
Equipment Required 3-10
Receive Board (750309) 3-11
Equipment Required 3-11

,

Receive Expanders 3-27
MicrophoneAmplifier 3-27
Auxiliary Input Amplifier 3-27
Intercom Driver 3-27
Intercom Input. 3-28
Headset and Speaker Amplifiers 3-28
Transmit'Mixer and Filter 3-28
Auxiliary Output· 3-28
Remote Transmit Circuit 3-28
Power

Equipment Required 3-29

Supply 3-28

::

3-27

-i-

Page

Chapter3·Transmit, Receive & Audio Circuit Boards (Continued)

Audio Board Continued

PCB Audio Assembly (878520) Versions 1 thru 6 (Parts List) 3-45

Display Board 3-48

PCB Display 878519 (Parts Lists) 3-48

Figure

1

2

3

4

5

6

7

8

9

10

II

12
13
14

15
16

17A

17B

18

19
20
21

22

23
24
25
26
27

28
29
30
31
32
33
34

List

of

Illustrations

Description Page

Headset XLR Connector Wiring 1-2
Front Panel-BTR200
Rear Panel - BTR-200 1-4

of

Location
LocationofRev Level for Versions 3
LocationofRev Level for Versions I and 2 (Receive Board) 2-2
Location
Exploded View - BTR-200 2-4
Transmit Board Component Layout (Foil Side) 3-4
Transmit Board Component Layout (Component Side) 3-4
Schematic Diagram Transmit Board - Version 1 3-5
Schematic Diagram Transmit Board - Version 2 3-6
Schematic Diagram Receive Board 3-16
Receive Board Component Layout (Component Side)

Versions
Schematic Diagram Receive Board Version 2 (750309) 3-18
Receive Board Component Layout (Component Side) Version
Receive Board Component Layout (Foil Side) 3-19
Receive Board Component Layout (Component Side) Version 2 (750309) 3-19
Schematic Diagram Receive Board Version
Block Diagram Versions 1 and 2 3-31
Block Diagram Versions 3
Audio Board Component Layout (Component Side) Versions land 2 3-33
Audio Board Component Layout (Foil Sde) 3-34
Schematic Diagram Audio Board Version
Schematic Diagram Audio Board Version 2 3-36
Details
Details
Audio Board Component Layout (Component Side) Version 6

with Detailed Areas Showing Differences ofVersions
Audio Board Component Layout (Foil Side) Version 6 3-40
Schematic Diagram Audio Board Version 3 3-41
Schematic Diagram Audio Board Version 4 3-42
Schematic Diagram Audio Board Version 5 3-43
Schematic Diagram Audio Board Version 6 3-44
Display Board Component Layout (Foil Side) 3-48
Display Board Component Layout (Component Side) 3-48

Rev Level for Versions 1and 2 (Audio Board)

thlU

6 (Audio Board)

of

Rev Level for Versions I and 2 (Transmit Board) 2-3

I and 2 (70714000) 3-17

1..

I (750309) 3-20

thlU

6 : 3-32

I 3-35

of

Board Differences Between Versions I and 2 3-37

of

Board DifferenceinVersions 3, 4,5,and 6 3-38

3,4,5,

and 6 3-39

1-3

2-1
2-1

3-19

-11-

: -

')

GENERAL

The BTR-200 is a base station which communi-

cates with up to four portable units simultaneously,
in

full duplex.Itmay be used alone with a headset

or

interfaced

hardwired intercom system.

DESCRIPTION

to

other

equipment

CHAPTER 1

such

as a

n

1-1

CONTROLS

and

CONNECTIONS

Power

ON/OFF

FRONT

Switch: Push this switch once

PANEL (Refer to Figure 2)

to
turn power ON; push it againtoturn the power
OFF.

Power
illuminated when the Power
pushed in the

ON

Indicator:

The Power ON Indicator is

ON/OFF Switch is

ON

Position. It remains illuminated

while the Transceiver is on.

Local

Headset

Connector: 4 Pin XLR Connector
for InputJOutput. The headset jack will accept 6
different Telex Model Headsets. Compatible with
otherintercom headsets with four pin XLR connec­tors that are wired as shown in Figure

MICROPHONE
GROUND

1.

Local Headset Volume: Adjusts volume

to

Local
Headset. DOES NOT AFFECT MICROPHONE
GAIN.

Mic

On-Push-to-Talk/Lock-to-Talk

Switch:
Enables the local headset microphone audio func­tion. NOTE: DOES NOT control base station RF
transmit.

Local

Push-to-Talk

Indicator:

Will

be

il-

luminated whenever the talk function is on.

Local Microphone

Gain

Control

and

Over­modulation Indicator: A screwddver adjustable
control is provided
local headset mic. This input is protected

to

control the input level ofthe

from
overloads by means of a gain compressor whose
operation

is

signaled by the gain LED indicator.

MICROPHONE
AUDIO

Headset

Figure 1

XLR

ConnectorWiring

BALANCED
AUDIO
OUT

Portable
in the
user of the conesponding portable unit
by others connected

EnableSwitches

"IN"

position, the Enable switches allow the

and

Indicators: When

to

the system. Wheninthe

to

"OUT" position, the respective portable will
muted, but this portable will still be abletohear
other selected remotes and interfaces. The in­dicators normally show the presence
transceiver in use

on

the channel corresponding

of

a portable

that indicator.

1-2

be heard

be
all

to

INTERCOM INDICATOR

27160-8-00I-A

Headset

POWER

ON

INDICATOR

AUXILIARY

PORTABLE CARRIER INDICATORS

I.-.--~

Portabte

Station

Connect--

ENABLE SWITCHES
PORTABLE

TRANSMITTERS

ENABLE

TO

RECEIVE

INDICATOR

I

I

I

~OCAL

I

i

HEADSET VOLUME

8TR-200

1I

. LOCAL HEADSET CONNECTOR

1-3

INTERCOM LEVEL CONTROL

INTERCOM

AUXILIARY

ENABLE

AUXILIARY

ENABLE

SWITCH

LEVEL

Front

CONTROL

SWITCH

Figure 2
Panel-BTR200

LOCAL MIC GAIN CONTROL

MIC

LOCAL

ON

PUSIH-lO-TALKI

PUSH-TO-TALK

LOCK-TO-TALK SWITCH

LOCAL MIC
OVE

RMODULATION

INDICATOR

INDICATOR

27160-B-002-A

Transmit

Anteflna

TRANSM
CONNECTOR

AUXILI

o

IT

ANTENNA

ARY

OUTPUT

AUXILJARY INPUT CONNECTOR

CONNECTOR

Headset

r"=-h

Oyn

Mic

fit

r~l

Cant

1

TRANSMITTER

HEADSET MIC

SELECT

Transmit

Off

Remote

SWITCH

SWITCH

o

Intercom

Input

INTERCOM CONNECTORS

TELEX

Fex

Jack

CO

LSpeaker-l

SPEAKER/LOCAL

COMMUNICA

1.0.

850BTR-200

G~

MONITOR

RECEIVE ANTENNA CONNECTOR

TtONS.

INC.

MADEINU.S.A.

Power

300

rnA

A~'~

o

-------

POWER JACK

SPEAKER GAIN CONTROL

(8

n

MIN.)

Figure 3

Rear

Panel BTR-200

1-4

Ext

Intercom Switch, Level Control,
dicator: This switch enables the wired intercom
interface when "IN", and disables it when "OUT".

RTS

For
and the "OUT" positionischannelB. Ascrewdriver
adjustable control is provided to control the input
level

intercoms, the "IN" position is channel A

of

the wired intercom.

and

In-

Auxiliary Audio
and

Indicator:
Auxiliary intelface when "IN" and "OUT", respec­tively. The functionofthe level control here is the
same as that described for the intercom.

Enable

Theswitchenablesand disables the

Switch, Level Control,

(j

REAR

Transmit
antenna(supplied)
should match connector dot

Receive
antenna (supplied)
should match connector dot

Transmit
operator

the "OFF" position, the transmitter is always off.
This mode may be used
solely
transmitter is always on. This continuous mode is
recommended over the "REMOTE" mode. In the

"REMOTE" position, the transmitter is enabled
only when one or more portables are active.

Headset Microphone Select Switch: This switch
allows the user to select either
Dynamic microphone. This switchi~factory preset
to

DYN Position.

NOTE: All Telex headsets that are used with this
intercom are dynamic type microphones.

Antenna

Antenna

Switch: Slide switch that allows the

to

select oneofthree transmit modes.

as

a monitor. In the "CONT" position, the

Connector: Connect5/8-wave

to

this connector. Antenna color

on

BTR-200.

Connector: Connect 5/S-wave
to

this connector. Antennacolor

on

BTR-200.

if

the base is functioning

PANEL (Refer to Figure 3)

In

an

Electret

or

Intercom
the BTR-200 with a wired intercom system.

Auxiliary
used for 2-way (four wire) input and output to the
BTR-200 or as a simplex input or output. Typical
usesare 4 wire low level intercoms, taperecorders,
public address inputs or outputs, orwhen operating
two BTR-200 units simultaneously.

Power
(supplied) or any filtered 12 to 14
source, or 13.0

Speaker
ternal speaker

Speaker
Adjust the gain control clockwise to increase
speaker gain
speaker gain.

NOTE: Leave setting counterclockwise
speaker is attached.

Connectors: Connections to interface

Output/Input

Jack:

Forexternal AC wall supply adaptor

Connectors:

VDC/300 rnA

VAC

RMS/300 rnA source.

Jack:

Allows the user to connect an ex-

(8

ohms minimum)tothe unit.

Gain

Control: Screwdriver adjustable.

or

counterclockwise

to

decrease

Can

if

be

no

1-511-6

Blank

CHAPTER 2

IDENTIFICATION

REVISION AND VERSION

AUDIO BOARDS

Version 1 and 2 use Rev A circuit boards. The
location for the Rev letteris shown below. Version
2 contains a small circuit board with a switch. See
Figure 4.

AUDIO BOARD

RECEIVE BOARD

....

__

..

~---~_.:

LOCATION
SWITCHBOARD

OF

OF

CIRCUIT BOARD

This board is installed in the holes for C124 and
C125 (see below). Version 1 does not have this
switchboard. For Rev C and higher, the location
for the Rev letteris shown in Figure 5.

o

r--------.

Location

AUDIO BOARD

70723-000 REV A COMP

"'-.

Figure 4

of

Rev Level for Versions 1

••• _

:I.

•

.2"!!2";!!.'!!!.I!.E!..~~_:

and

2

c . .

I U I

a:

I

if

«

I 0 I

0

I 3 I

!Xl

I & I

l-

L_

'"

:E

en

z

«

a:

I-

REV LEVEL LOCATED

.--

UNDER TRANSMIT
BOARD

I

70723-000 REV C

U

I

I

Figure 5

LocationofRev Level for Versions 3

2-1

thru

6

Rev C boards can be either Verion 3 or 4. The
differences are all parts values:

Rev D boards are all version 5.

E boards are all version

Rev
Rev B was not produced.

6.

Version

3
4

The

BTR-200

RIOI

82K 82K

200K

RI03

200K

uses oneoftwo receive boards.

Rl25

6.2K 1.5K

4.7K

Rl30

4.7K

Rl31

1.5K 1.5K

4.7K 4.7K 4.7 8.2K 3.9K 15K 10K

RECEIVE

Rl32

Rl33

1.5K 5.6K

BOARD

750309 COMP REV A

Rl54

Rl62 Rl68

9.lK

68K

Rl70

68K

Cl33

lO~F

22~F

LocationofRev Level

Early production units came with 70714000, and
750309 was installed in later units. 70714000
came in two versions that differed slightly (See

table below):

Version 2 was built only with Rev C boards.

Version 1 was built with Rev A, B, or C boards.
Thedifferentrevisionson this board weremanufac-

turing changes that did not change the schematic.

70714000

Version

1

2

R327

4.7K 4.7K 4.7K 4.7K 10K 10K 10K 10K
10K 10K 10K 10K 20K 20K 20K

R345 R363

Figure

R381 VR302

6

for

Versions 1

750309 Rev

750309 Rev

Some early version 1 boards did not have a shield
over the oscillator section

and

2

Aboards are version

Band

C boards are version

..

VR304 VR306 VR308

1.

2.

20K

2-2

All

Rev

be

version 1or

Aboards

70724-000 REV A COMP

LocationofRev Level for Versions 1

are

version1.Rev Bboards

2:

TRANSMIT BOARD

,.--

--------

I '70"12'

....

-000

rEVAOONP

7--------

Figure 7

may

I

and

2

o

Version R503 R521

1 4.7K 10K

2 15K

68K .001 uF

CS31

.0033uF

2-3

30

(TYPICAL\~e.

BOTH SIDES)

(TYPICAL
4 PLACES)

~.

":

th

31

31

/(TYPICAL

,fj

3 PLACES)

32

DETAILB

10

10-9-12~

"*--/t-'12

(TYPICAL

4 PLACES)

DETAIL A

13

10

--===--

(TYPICA~

4 PLACES)

25

~//

2~/'>

1

J/~

TfJ

_._

",...

...

/ ;b

:.:

/'

/"

..

'

",

..

""/""

13

19'2124//~

18

(TYPICAL 6 PLACES)

17

11

Figure 8

Exploded View· BTR-200

10-9-12

(TYPICAL

4 PLACES)

(SEE DETAIL A)

3

34

(TYPICAL

8 PLACES)

8

26

DETAILC

Mechanical

Item No.

I 878519

2 54460001
3 878520
4 51847011
5
6 52264005 Connector Housing, 5 Pin I
7
8 970011-1
9

10

II

12
13
14
15
16
17
18

Part

No.

878560 Wireset

0086300 Copper strip, .343 x .005

50049003 Lockwasher
51845038 Screw, #4-40 x
51847003
450520 Standoff
51856001
270229
57722000
450464-1 Sprocket
450463-1
53431002

Description

PCB, Display
Receptacle, crimp
PCB, Audio
Screw, #4-40 x 1/4", flathead

Fish Paper 1

114",

Screw, #2-56 x 1/8" flathead

Screw, plastite, #2-28
Lug 2
Connector, antenna

Volume Control Knob
Switch Button, rectangular

pan head

Qty

AIR

16
18

7

Parts

Item No.

I

5

I

8

I

1
8
7

2

I

1
6

19

20&

22 878517 Connector bracket
23
24 150624-3 Telex label
25
26
27
28
29
30
31
32 878431 Covel'
33 (Not Used)
34 51845074 Screw, #6-32 x 1/4", pan head 8
35 557000 Nut, #6-32, hex
36
37

Part

No. Descrilltion

53431005 Switch Button, round 2

21

59908001 Connector, B4MB Switchcraft I

878439-3
878430
878521 Transmit Board 1
51845091
878662
51845093
51845055

500322

760386

(Not Used)

Front Panel
Chassis 1

Screw, #6-32 x 3/16"
Receive Board
Screw, #6-32 x 3/8" 6
#4-40 x 3/16", pan head

Screw, #6-32 x 3/8",
Insulator, Pre-impreg.

hex

head

Qty

I

1

I

10

1

7

I

I
I
I

2-4

CHAPTER 3

TRANSMIT, RECEIVE & AUDIO CIRCUIT,BOARDS

BTR-200 INSTRUMENT

DISASSEMBLY

1.

Remove 6 each #6 pan head phillips and 7 each
#14 head phillips screws and remove cover.
Refer

to

Figure

2.

Unsoldercoaxcablesfrom transmitandreceive
boards.

3. Unsolder3 copperstraps from receive board (if
present)

4.

Remove transmit and receive boards. Early
versions are equipped with snap-on nylon stan­doffs and later versions are held with #4 pan
head phillips screws.

8.

9.

Unplug the cable harness at
ribbon cables at P102 and P103.

10.

Remove 10 each #6 pan head phillips screws
holding the circuit board

11.

Slide the circuit board forward and lift up and
outfrom the rear.

12. Remove 8 each #6 pan head phillips screws
holding front panel

13. Remove 2 each #4 pan head phillips screws
holding headset connector bracket to chassis
and remove front panel.

to

chassis.

P1l4

to

the chassis.

and the two

o

5.

Remove ring nutsfrom the two RFconnectors.

6. Remove the hex head nylon screw and nut
holding

7. Remove 8 each #4 flat head phillips screws

holding the fourXLRconnectorhousings
chassis. On some early versions, the upper
PEM nuts will be replaced with nuts and lock­washers.

8.

Using an
screwdriver, unlock the XLRhousings by turn­ing the locking screw counterclockwise. Then
remove the
the rear.

Q1

08

XLR

XLR

to the chassis.

tool

or

small

housings by pulling them to

flat

to

the

bladed

14. Remove
circuit board to front panel and remove circuit
board. NOTE: When refitting this circuit
board the volume control on the front panel
must be positioned so that the pins and slots
mate properly.

15. Reassembly is the reverse

7 each phillips sorews holding front

of

these procedures.

3-1

TRANSMIT BOARD

CIRCUIT DESCRIPTION

U50IC is an amplifier whose gain is controlled by

of

the level
As the level here increases, the gain is decreased
and this results in a 2:1 compression characteristic.

Pre-emphasis is added by U501B. R504, R505,

and C508 set this at 115uS. C531 rolls the response
off above
call signal (see Audio Board Circuit Description).
Q501 is a Colpitts oscillator with the collector
tuned
VVC502 are added in
allow frequency modulationofthe oscillator. The
oscillator is operated
resonant point
linearity at the expense

trip1er and Q503 is a straight through amplifier.
The catTier frequency is thus nine times the crystal.
C529, C530 and L503 function as a low pass filter

and matching network.

audio entering the rectifier at pin 16.

10KHztofurther attenuate the 20 KHz

to

the third harmonic. T501, VVC501 and

selies with the crystal

10KHz

of

the crystal. This improves

of

some stability. Q502 is a

below the series

to

ALIGNMENT PROCEDURE

EQUIPMENT

REQUIRED:

o RF POWER METER
o FREQUENCY COUNTER
o DC VOLTMETER

1.

Connect the RF power meter and frequency

to

counter
sure the Transmit switch
the the Cont position.

2.

Adjust T502, T503, T504, VC501, and VC502

for maximum power. Note:

severly outofalignment and no output can

obtained, it may be necessmy
T502and T503 for maximum DC voltage at the
emitter

mum

adjust VC501and VC502 for maximum power.

the Transmit Antenna jack. Make

on

the

reat·

panel is set

If

adjustments are

to

first adjust

of

Q502. Then adjust T504 for maxi-

DC

voltage at the emitterofQ503. Now

be

3. Adjust T501 for the

Y501 Marking Frequency

154T570

177T800
183T730

4.

Repeat Steps 2 and 3 as necessmy.

5. Deviation
alignment.

will

COlTeCt

be adjustedinthe audio board

frequency:

154.570

177.800

183.730

3-2

Voltage Tables - Transmit Board (878521)

o

DEVICE

U501

DEVICE E B C

Q50l
Q502
Q503

1====-r===r===r====jPI=N=N=U=rM=B=E"F'R==~===r==~==l1

18

20

19

5 2.5 2.5 2.5 2.5 1 2.5 2.5 2.5

1

2

1.88

0.78

1.21

17 16

53 4

PIN

NUMBER

2.44

0.66 9.7

0.26

10

9.5

15

6

14

13 12

2.5 0

87

11

2.5

9

10

Q501, Q502

E

.---

U501

Q503

C

B

---,

C

E

B

)

3-3

Transmit

Board

Figure 9

Component

Layout (Foil Side)

C501

o

~nc5°bc50~

",y

R501 -e::>- D

O

+

0

I

R502

-e::>- V a

USO

1

+~04

9'

f1

-f

1505

Y

-e:::>-

C5<t9,.-t @ Wc501 r

CS08

c:::>

R504 C507

U -e::>-

~'3

G

VRS01

Transmit

Q~

~

0

u:;

o

Y

~

')

~

101

0 0501 a C517

WC502

\J

R508

Board

C503 PS12

...

0+

l'lN

ylQ

n I

U

OC506 U502 CS11 C522

I()C512QQ

lQ

nS005&'

00

I0 I

Q

l'l

00C516

+ R517 OS03 0 N

::!

05'3-/\10

~~

I0 Iy

0,

C518?t

Y R510 0 R 5

SILK

Al

~

YSOl

~

Component

SCREEN

Figure 10

Layout

REV.S

l'l

R51

6 Y Y

a

~

I Q §

C~:00Al~

~~N(]

o~

Q~~

(Component Side)

u:;l'l(")ol'l~~

o::y~~ylO

~~

~Ol

~

C525 a

~~~6

l'l

RS20

0 0

~@C501

~O

~

.....

~

C529 U

L502

t"03

"

0

O~

OC5:m~

0

3-4

P512

(
(

G50J

1UF

I

R502

JoK

C506

loopf

T

20

13

12

10K

R521

10K

..

14

R501

30K

R504-

10K

C507

1UF

,

R503

4.7K

o

G509 +

4.7UF

VR501

5K

C510

4-.7UF

t-+-'-~\I\1~-'

C513

N

T

100pf

G511

10UF

R507

T

I

47K

..

+

1

R508

47K

WC501

MV21

I

08

T

10

8

G501

+

lOoU~

I T

15

..

C504-

1UF

I

+

C505

4-.7UF

L501

C527
J.3PF

VC502

C530

Q503~502

MPs9011

T

L.

T

I

T

3-5

T501

FREQUENCY

FREQUENCY

154.570

177.800

183.730

Schematic Diagram Transmit Board - Version 1

C516

MHZ

27PF 39PF 100PF

MHZ

22PF 30PF 75PF 12PF 27PF

MHZ

22PF

DEPENDENT

C519

30PF 75PF

Figure

C520

11

COMPONENTS

C523 C524 C529 C530

18PF 33PF 68PF 20PF

12PF 24PF 47PF 15PF

TABLE

47PF 15PF

T501

-000

-002

-002

P512

(
(

1

j'"

U502

78L05

C506

100P~

"'f

10

20

12

C501

100U1

R502

30K

3.9K

8

+

j"

15

..

C504

I

1UF

j'"

R501

30K

16--l +

C505

4.7UF

C507

1

UF"

+

R503

15K

C511i

10U~

j'"

I

C530

T

T501

FREQUENCY

154.570

177.800

183.730

MHZ
MHZ
MHZ

FREQUENCY

C516 C519
27PF
22PF
22PF

DE:PENDENT

39PF
30PF
30PF

C520

100PF

75PF
75PF

COMPONENTS

C523

18PF
12PF
12PF

C524
33PF
27PF
24PF

TABLE
C529

68PF

47PF
47PF

C5JO
20PF

15PF
15PF

T501

-000

-002

-002

C529

I

7'

Figure 12

Schematic Diagram Transmit Board - Version 2

PCB Transmit Assembly (878521-*)

Ref

No.

PCB500

Description

PCB Transmit

Part

No.

70724000

Capacitors

All
Ref
C501

capacitorsinmicrofarads

No.

Electrolytic, 100 51821524

Description

unless

noted.

Part

No.

C502-C504 Electrolytic, 1 51821106
C505 Electrolytic, 4.7 51821109
C506
C507

Ceramic, 100
Electrolytic, 1 51821106

pF

35693019

C508 Film, poly, .01 52719007
C509-C51O Electrolytic, 4.7 51821109
C511 Electrolytic, 10 52723008
C512
C513 Ceramic, 100
C514

C515 Ceramic, TC, 68
C516',2

3

C516
C517
C518

C519,,2

3

C519
C520',2

3

C520
C521 Ceramic, 100
C522

C523,,2

3

C523
C524'

2

C524

3

C524
C525
C526 Ceramic,
C527 Ceramic, 3.3
C528

C529,,2

3

C529
C530,,2

3

C530
C531 Ceramic, .0033 (Version
C531 Ceramic, .001 (Version 2)

Ceramic, .01 52676107

Ceramic, TC, 47

Ceramic,22pF
Ceramic, 27 pF
Ceramic, .01
Ceramic, 1.5
Ceramic,

30

pF

pf
Ceramic,39pF
Ceramic, 75

pF
Ceramic, 100

Ceramic, .001
Ceramic, 12

pF
Ceramic, 18 pF
Ceramic, 27
Ceramic,
Ceramic, 33

pF

24

pF 35693060

pF

Ceramic, .001

',lOO

pF
Ceramic, 100
Ceramic, 47

Ceramic, 68

Ceramic,

pF
pF

15

pF

Ceramic,20pF

pF

pF
pF

pF
pF

pF

pF

1)

35693019
52713002
52713003
35693011

35693012

52676107
35693047
35693046
35693014
35693061
35693019
35693019
52676101
35693008
35693010
35693012

35693013
52676101
35693019
35693002
35693019
35693015
35693017
35693009
35693048
52719004

52676101

Variable

Capacitors

Ref

No.

Description

Coils

3

T501
T501',2

Coil

Coil
T502, T503 Coil
T504

L501,,2

3

L501
L502,,2

3

L502
L503',2

3

L503

Coil

Coil,

Air

Wound 63725000

Coil,

Air

Wound
Coil, Air Wound
Coil,

Air

Wound
Coil,

Air

Wound
Coil,

Air

Wound 63725005

Crystals

Y501'

2

Y501

3

Y501

All

resistorsinohms,

Crystal, 177.800
Crystal, 183.730

Crystal, 154.570

1/8

Resistors

R501, R502

R503

30K

4.7K

(Version 1)
R503 15K(Version 2)
R504
R505
R506-R508
R509, R510
R511
R512
R513
R514
R515
R516

R517

R518

R519
R520
R521

R521

R522

10K
15K

47K

10K
820
47
47K

5.6K
100
47

8.2K
470
56
47
10K
68K
10K

(Version
(Version 2)

Connector

P512

Header, 3

pin

Watt,

1)

MHz
MHz
MHz

5%,

unless

Part

52978000
52978002
52979000
52977003

63725005

6372..')000
63725005
63725000

52989120
52989214

52989100

noted.

52154025
52154044
52154032
52154036
52154056
52154020
52154036
52154062
52154092
52154020
52154042
52154084
52154092
52154038
52154068
52154090
52154092
52154036
52154016
52154036

670062

No.

VC501,

VC502

Variable Capacitor 35837007

Transistors

Q501, Q502 Transistor, 2N5770 54689000
Q503 Transistor, MPS-901

mOl

U502

Integrated

IC,NE575N

IC,78L05

Circuits

760376

53277003
54680005

Diodes

VVC501
VVC502

VR501

Diode, MV2108 58675000
Diode, MV2108 58675000

Variable

5K

Variable resistor

Resistor

57148068

3-7/3-8 Blank

Frequency

177.800

183.730
154,570

MHz
MHz
MHz

878521-*

*Dash

No.

-177 1

-183

-154 3

Reference

2

No.

RECEIVE BOARD

()

CIRCUITDESCRIPTION

PCB 70714000

This unit is a four channel single conversion
receiver consisting
strips. Signals entering the board proceed through
3 tuned circuits,
to

the mixer. MX301 is a doubly balanced diode
mixer and receives +7 dBm from the oscillator.
Q302 is a Colpitts oscillator with the collector
tuned

to

the second harmonic. Y301 operates on
the fifth overtone with C319 and L308 acting as
mode suppressor. L310 is used
on frequency. From the mixer the signal continues
through a broadband filter to line driver Q303.
VR309 is used
Q303 drives the four I.F. strips, beginning with
crystal filters FL30l-FL308.
are the same except for component values. Also,
the 10.7
two tuned circuits.
description the parts in the 10.7
referredto. TheI.F. signalis amplified by Q304and
U301A, and limited and detected by U301B.
U301B contains a quadrature detector which is
tuned by T309. Squelch is
type, the D.C. voltage at pin 5
propOltion to the signal strength. With no signal
U302 pin 1is low and the audio outputissquelched.
When the received signal causes the voltage at pin
3

of
goes high and the squelch opens.
threshold at pin 2 and thus the squelch. R320
provides hysteresis. Q305 is used
on the front panel. From U301 the audio is
amplified by U303A. R389, R328 and C354 set
the de-emphasis at 115uS. VR302 is used
pensate for variations in detector output level.
U303B is a 3 pole ButterwOlth low pass filter with
a cutoff frequency

MHz

U302toexceed thatofpin 2ofU302, pin 1

of

one front end and four I.F.

Q30l,

to

setthe collectorcurrentto 20 rnA.

I.F. substitutes a ceramic filter for

and 3 more tuned circuits

to

setthe oscillator

The

four I.F. strips

For

the remainder

MHz

of

the amplitude

of

U301 varying in

VR30l

to

drive the LED

of

10KHz.

of

the

I.F. will be

sets the

to

com-

PCB 750309

This unitis a fourchannel dualconversion receiver
consisting
Signals entering the board proceed through 3 tuned
circuits, Q301, and three more tuned circuits to the
mixer. HY301 is a doubly balanced diode mixer
and receives +7 dBm from the oscillator. Q302 is
a Colpitts oscillator with the collector tuned to the
second harmonic on version 1 boards and the third
harmonic on version
overtone with C311 and L308 acting as mode sup­pressor. L307 is used to set the oscillator on fre­quency. From the mixer the signal continues
through Q303
and Q470. On version 1boards the signal is resis-

tively coupled to the filters. On version 2 boards it
is inductively coupled.
same
remainder
MHz I.F. will be referred to. U320A mixes the
incoming signal with a 10.245

produce the second I.F.of455 KHz. (The other
three oscillators operate at 455 KHz above their

n~spective

limiter and quadrature detector, which is tuned by
L322. U320C functions as a
filter for operating the squelch. With. no signal a
largeamount

a portion
rises above .7V U320D clamps pin
muting the audio, and drives pin 15 low, extin­guishing the LED on the front panel via Q322.
When a signal is received, the noise at U320 pin
drops and lowers thevoltageat the emitterofQ321,
releasing the audio clamp and lighting the front
panel LED. Since the LED current flows through
R33l,

hysteresis. VR321 adjusts not only the noise
amplitude delivered

and is used to set the squelch at 1microvolt. From

U320 the audio
R328, C335, and VR320 set the de-emphasis at

l15uS. U321Aisa three poleButterworth low pass
filter with a cutofffrequency

of

one front end and four I.F. strips.

2.

Y301 operates on the fifth

to

filtet drivers Q320, Q370, Q420

The

four I.F. strips are the

except

the voltage drop acts on

for

component

of

the description the parts in the 10.7

input frequencies). U320B contains a

of

noise is present atU320 pin13and

of

this is rectified by Q321.Ifthe emitter

to

Q321 but also the D.C. bias,

is

buffered and filtered by U321.

values.

MHz

94

KHz bandpass

Q32l

of

10 KHz.

oscillator

16

to ground,

and provides

For

the

to

13

3-9

ALIGNMENT PROCEDURE

Receive Board - 70714000

Equipment Required:

D Signal Generator

D Sensitive RF Voltmeter

D DC Voltmeter

D AF Voltmeter

1.

Connect the signal generatortothe Receive

Antenna jack. Set the deviation at

1 KHz. Refer to the frequency chart below.
Look at the marking on the Y301 and set the
generator

quency.

Y30l

Marking

171R905
207R800 206.900
213R800

to

the corresponding ALIGN fre-

Align

170.705 171.905 171.045 170.245

212.900 213.800 213.425 212.800

±3 KHz at

CHl

207.800 207.425 206.800 206.000

11.

Place the RF voltmeter probe tip inside the top
ofL304.

12.

Adjust VC304 for a peak indication.

13.

Adjust VC305 for a null indication.

14.

Adjust VC306 for a peak indication.

15.

Place the RF voltmeter probe tip on the collec-

tor

ofQ303

for a peak indication.

CH2

and adjust T301, T302, and T303

CH3 CH4

169.505

212.000

2.

Adjust VR309 for 0.44 VDC across R312.

3.

Place the RF voltemter probe tip inside the top

of

L307 and adjust VC307 for a peck indica-

tion.

4.

Set the RF voltmeter to its most sensitive scale
without stray pickup.

5.

Place the RF voltmeter probe tip inside the top
of

L301.

6.

Increase the signal generator output level until

the

RF

voltmeter indication just beginstorise.

7.

When adjusting, reduce the signal generator
output rather then reducing the RF voltmeter
sensitivity.

8.

Adjust VC301 for a peak indication.

9.

Adjust VC302 for a null indication.

10.

Adjust VC303 for a peak indication.

16.

In the following alignment, unless othelwise

directed, adjust the signal generator output

level

to

maintain aDC voltageofbetween 1and

1.5 volts.

17.

Set the signal generatortothe channel 1 fre­quency.

18.

Adjust T304, T305, and T308 for maximum
DC voltage at pin 5

19.

Set the signal generator outputto1 mV and

adjust T309 for maximum audio at pin 7 of
U303.

20. Adjust VR302 for 140 mV of audio at pin 7
U303.

21. Set the signal generator output
adjust VR301
LED

on

the front panel.

22. Set the signal generator
quency.

3-10

of

U301.

to

just extinguish the number 1

to

the channel 2 fre-

to

1~V and

of

23.

Adjust
maximum DC voltage at pin 5

T31O,

T311, T312, T313, and T314 for

of

U304.

30. Adjust VR306 for 140 mV ofaudio at pin 7
U307.

of

24. Set the signal generator output to 1 mV and
adjust T315 for maximum audio at pin 7
U305.

25. Adjust VR304 for 140
U305.

26. Set the signal generator outputto1~V and
adjust VR303
LED on the front panel.

27. Set the signal generator
quency.

28. Adjust T316,

_ maximum DC voltage at pin 5 of U306.

29. Set the signal generator output
adjust T321 for maximum audio at pin 7 of
U307.

to

TIl?,

mVofaudio at pin 7

just extinguish the number 2

to

the channel 3 fre-

T318, T319, and T320 for

to1mV

of

of

and

31. Set the signal generator output
to

just

adjust VR305
LED on the front panel.

32. Set the signal generator

quency.

33. Adjust T322, T323, T324, T325 and T326 for

maximum DC voltage at pin 5 of U309.

34. Set the signal generator output

adjust T327 for maximum audio at pin 7
U31O.

35. Adjust VR308 for 140 mVofaudio at pin 7

U31O.

36. Set the signal generator output

adjust VR307
LED on the front panel.

to

extinguish the number 3

to

just extinguish the number 4

to

1

~V

and

the channel 4 fre-

to

1 mV and

of

of

to

1~V and

Receive

EquipmentRequired:

D Signal Generator

D Sensitive RF Voltmeter

D Audio Distortion Meter
D Spectrum Analyzer

Monitor

D AF Voltmeter-
D SINAD Meter

Y30I Oscillator

Marking

171

R905 182.605 171.905

or

CHI

Board

VHF

- 750309

lA

Version
inside the top
peak indication.

1B

Version
inside the top of L313 and adjust VC307 and
VC308 for a peak indication.

2.

Connect the signal generatortoa shott piece
wire and set ittothe oscillator frequency as
shown

3.

Using either a spectrum analyzer or a VHF
monitor, adjust L307 for a zero beat.

CH2

171.045

1:

Place the RF voltmeter probe tip

of

L309 and adjust VC307 for a

2:

Place the RF voltmeter probe tip

in

the chart below:

CH3

170.245

169.505

CH4

of

207 R800
213 R800

218.5

224.5

207.800 207.425

213.800 213.425

3-11

206.800

212.800

206.000

212.000

4. Connect the signal generatortothe Receive
Antenna jack. Set the deviation

I KHz. Referto thechartand selectthechannel

3 frequency.

5. Connect the AFvoltmeter, distortion meter, and
SINAD meter

6.

AdjustVR421tomaximum counterclockwise.

Adjust

7.
VC305 and VC306 for best SINAD.

8.

Increase signal generator outputtoI m

9 Adjust L422 for maximum audio.

lOA.

Version I: AdjustL421 and L422for minimum
distortion.

to

VC301,

U421 pin

VC302,

1.

VC303,

to

±3 KHz at

VC304,

V.

20. Adjust VR321 fully clockwise, then turn it
counterclockwise until the number I LED on
the front panel justcomes on.

21. Set the signal generator
quency and increase the output

22. Move the audio hook uptoU371 pin I.

23. Adjust L372 for maximum audio.

24A. Version I: Adjust L371 and L372 for minimum

distortion.

24B. Version

minimum distortion.

25. Adjust VR370 for 140 mV

26. Set the signal generator output

2:

Adjust L371, L372, and L373 for

to

the channel 2 fre-

to

I m

V.

of

audio.

to1!-tv.

lOB. Version

minimum distortion.

11.

Adjust VR420 for 140 mVofaudio.

12.

Set the signal generator outputtoI

13.

Adjust VR421 fully clockwise, then turn it
counterclockwise until the number 3 LED
the front paneljustcomes on.

14.

Set the signal generator to the channel I fre­quency and increase the output

15.

Move the audio hook up to U321 pin I.

16.

Adjust L322 for maximum audio.

17A.Version I: AdjustL321 and L322 for minimum

distortion.

2:

Adjusut L421, L422 and L423 for

!-tV.

to

1m

on

V.

27. Adjust VR371 fully clockwise, then turn it
counterclockwise until the number 2 LED

the front panel just comes on.

to

28. Set the signal generator
quency and increase the output

29. Move the audio hookupto

30. Adjust L472 for maximum audio.

31A.Version I: AdjustL471 and L472 for minimum

distortion.

31B.Version

minimum distortion.

32. Adjust VR470 for

33. Set the signal generator output

2:

Adjust L471, L472, and L473 for

140

the channel 4 fre-

to

U471 pin

mVofaudio.

toI!-tv.

I m

on

V.

1.

17B. Version

minimum distortion.

18.

Adjust VR320 for 140 mVofaudio.

19.

Set the signal generator outputtoI

2:

Adjust L321, L322, and L323 for

34. Adjust VR471 fully clockwise, then turn it
counterclockwise until the number 4 LED on
the front panel justcomes on.

!-tv.

3-12

NOTES:

/

o

3-13

Voltage Tables - Receive

Board

(70714000)

DEVICE

Q302 2.54
Q303 .44

Q304, Q306,

Q308, Q310

Q305, Q307,

Q309,

DEVICE

Q311

t==r-=r-=PrIN=N=UrM=B=E=Rr===r====r=====I

S

~

D

E

2.63

0

6.65

16 15 14 13 12

Gl

Q301

G2

B C

3.3 8.56

1.23 4.2

1.89

o

7.34

DEVICE G1

Q301

1.08

10
10

0

NO

SIGNAL

UNSQUELCHED

11

10

9

S

1.58 1.58

G2

D

8.68

Q302
Q303

Q304 - Q311

C

B

E

U301
U304
U306
U309

DEVICE

U301
U304
U306
U309

1.58

1I==,=====,====PFI=N=N=UFM=B=E=Rr=====.===.==l

1.58 1.58

1.58

1.58

1 2 3 4 5

16 15 14 13 12

1

1.61

1.61

0 7.35 6.09 3.34 2.07 1.84 3.44

2

3 4 5

o 1.59

PIN NUMBER

0 1.59

PIN NUMBER

1.59 1.59

6

11

1.59

6

7

10 9

1.59

7

1.

73

8

1.73

8

tmV

RF

IN

1

U301, U304, U306,

U309

3-14

DEVICE

U303
U305
U307
U310

Voltage

.......

_PIN.,.-N_U"T"M_B..,.E_R-==J

Tables·

8 7 6 5

10 5 5 5

5

550

1

234

PIN

NUMBER

Receive

DEVICE

U302
U308

Board

t===P.,..IN=N_U=M=B....,E.-=R==j

10 0.05 1 .21

0.05 1

123

(70714000) Continued

876

.21

PIN

NUMBER

5

NO

SIGNAL

0

4

1

U302, U303, U305,

U307, U308, U310

DEVICE

U320
U370
U420
U470

Voltage Tables •

l--___r---r--..,.-P-IN--rN-U-M-BI"""'E-R--r--+r--

18 17 16 15 14 13

2.13 0 0 0

0.792.57

:111111111111111111111111111.!11111!111111[~11111111111111111111111111!11111111111111!lllih:::::::~:l~II!1111111111111111111111Ii'l.I!lllllllllrl!IIIIIIIIIIII~r.

10 9.38 9.26 10

123

PIN

1.1 1.1

4 5 6

NUMBER

Receiv~

Board

1

,

12,

i

2.47,0 5.5 NO

i

1.11

i

I

I

789

(750309) Continued,

........

---t

11

10

...

·

:~:

10 5.9

U320, U370, U420,

U470

SIGNAL

o

L303

G20

O

[Q]

G10S

DEVICE

Q302

Q320, Q370,

Q420,Q470

a.

<"4

Voltage Tables - Receive

0

/

NOTE: If this part

absent, then surface

mount part has been
installed
Pad designations are

the same.

on

foil side.

E B

3.69

1.05 1.76

0.8 1.54

4.37

is

9.22

C

5

10

Board

DEVICE

Q301
Q301

(750309)

VERSION

1
2 0 1.8 8.8

Gl

0

G2

Q302, Q320, Q370,

D

1

9.22 1

0.36

Q420, Q470

S

DEVICE

U320
U370
U420
U470

I

1----r_...,.._-,-.P_IN-rN_U_M.....,Br-E_R......,._.,..Ir--.....,._""""1

18

17

2.13 0 0 9.34 0.36 2.57

IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIUNSQUELCHED

10 9.38 9.26 10

123

16 15 14 13

1.1 1.1

456

PIN NUMBER i

121

2.471

1.1·

789

11

\

1

I

10

10

0 5.5

5.9

lj

Q321, Q371,

Q421, Q471

Q321, Q371,

Q421, Q471
Q322, Q372

Q422, Q472

Q321, Q371,

Q421, Q471

0.79 0.77 10

0.35 0.8 9.4

0.79 0

8.67 9.34 9.4

10

3-15

NO SIGNAL

UNSQUELCHED

NO SIGNAL

UNSQUELCED

Q321, Q322, Q371,
Q372, Q421, Q422,

Q471, Q472

~-------'--------------------r---:-:--------~----------,

RJ1S

1.5K

Q304

MPSJ640

CJJJ

C326U~3:~2~PFTl

~------------------------jr------------r------------------,-----j

LJ05

C31J

VC30.

CJOl

()--j

f-f:"

VC,JOl

CaD;:}

VCJO~

1 LJOl "l

-:r

. T

CJ05

! 1i-------,

VCJOJ*r;;..::=.-_-+,,,,,b'-1

LJ02

Q301

3SK174

C30::f

VC305,

CJoa

I

lOOPF

,

LJ09

1MH

R31J

240

FREQUENCY

CJ25

10PF'

,

1
1169-172
1206

214

MHZ
MHZ

11.075MHZ 6.2PF

,

,

FREQUENCY

t-

'169

172

\206-

214

FL305
FL306

C3921

12.36MHZ 43PFI330PF 168PF 150PF1.82PFI36PF!.82PFI43PF1330PF I 390PF

MHZ

11,7MHZ

MHZ

C393 IC3941c3951c3961c3971c3981c3991 C400 1 C405 IC4061c4071 C408 IC4121

4

7PF

\ 390PF\75PF\62PF!1.0PFI39PF 11.0PF147PFI 390PFI 470PF124PFI24PFI270PF 139PF I

120PF

120PF

1330PF 136PF 1

G6PF

CJ29

470PF

RJ17

220

FL303
FL304 C334 IC360

11.56MHZ

RJJJ

1.5K

RJJ5

220

i"

.001

O""Q,~I~~~O"

~d

390P TJ12

c3621c3631c3641c3651c3661c3671

UF

150PF

175PF168PFli .oPFI39PF h.oPFI50PF I 470PF

156PF

82PF 175PFIt, 1PFI43PF

CJ64 CJ66

C3.W

7313

.,

..

,

F1.J09

SFE10.7J .01UF

"=

'Rg;g

C339 T

T .

CJ69

,OlUF

RJJ6

Ie3

••

220

39QP

CJ71 I

T

,OlUF

,

01UF

-t"

It,

1PF!56PF IS60PF

0302

lN4148

"

""f

UJ04:A

NEBl4

CJ70

.OlUF

C373 IC3801

139PF
143PF

RJ19

1.5K

I

1

CJ4B

47PF

__

RJ24

220K,

~+

UJOJ:A

NE5532

~.

, " ,0022UFlo056UF

Rg~:,

RJ25

10K

j ,

CJ54

OO'~

RJ29

R3JO

10K 10K 10K

CJ56 CJ57

....

RJJ1

PJ09

r--1'

-t~r

_

l

CJB2
.1UF

RJ42
220K

0385

•

1

R343

I10UF'

10K

"'f

'7RJ45

V.l 4.7K

V.2

QJ07
MPSJ704

10K

CJ67 +

lUF

r

,

RJ40

VRJOJ

22K

5K

,

RJ51

1.5K

CJ96

CJ96

RJ53

220

FL307
FL308

C424

13.1MHZ 39PF

12.5MHZ 43PF

R371

220

C39J CJ97

'"lp~lr

TJ18

,

i'

Figure 13

Schematic Diagram Receive Board

70714000

PCB Assembly 878522

RJ55

1.5K

DJOJ

lN4148

RJ60

C400

T

C403T

,OlUF

C402

.OlUF

Y

220K

SR3.,

I

lOUr

'7

0309
MPSJ704

10K

'7

RJ63

4.7K

V.l
V.2

10K

C419 +

lUF'+

C41B

.OO15Uf

P311

C

'r

I

~

C444

I

C446
.1Uf

RJ76

RJ76

22K

VRJ07

220K

RJ79

10K

RJB6

C450

10K

.OO15Uf

VRJOB

10K

V.l
V.2

5K

,

C451 +

lUf~

20K

3-16

C

T

I

PJ10

o

SHL~

\

~

9

~ANT::::;/~g

1301r

@I

<>1

°

~

~

N~§1J0303

O

VC301

vn020=:<\"y'::\ lf1C3oitQ> Q

co

L.302

o

@ c

O

C304CCb

0

@@C303

~

@(f10R312@

Ii

~ ~

't1

@o:: <O>c324

0 CO>c325C360Cjg 0

@

@-U09-@

l~gAC326JO

u~o

o 1

~~

I@_If(§)

VCJ03

@R303@

C308C@]lQ]030107C321'c/OO

@R304@

@R30S@ 6

rJ;

o

~

~302@

@I

IQ\

01

L303

@ 0 @

@R301@ ° .

lQ] lQ]

~31

O

C3

6

C311

;

0

I')

,>

0U L

T30310

C323

0

00_

~~

U06

J@J§I§]C386@R39()@

O

R332

@c::::J@FU03

[]@]]

FU04

@§l§J

@R33~@R334@

T311Fo~CJeO

l2.

~~

~~~~~&>C359

'C7@R333@

~~00l

~

~013130

10001~oo2JJooOJ

0 0

01

10

OJ

1312~D

1302

01

?o

0

O~

A 1

000

1001

@R306@ @R345@

@'6'1)\

~~

ol~flo

n

cr@

C370~

11301 @R337@

•

Olooooof01o

~

C3720

@-R338-@@R341@

~

'©@

N

FU01

~

1310\@c:.J@

~~~OO1r§§§

A[;.

~

10

0'.

1314

0-

C377

~~l!!9

~noft>

U304

0 0 0 0 0 0 0 0

C384CCb @R343@

<>£oro

~5@R318@~

N 0

ro

QC383

8b

OO342@C381OO31OO;:]0

003400

R314

FL302

~

§§§

@R317~316©1A~

ro~o~~j~~~emro8G~~~~~cdiCE42~JOO~CJ92

~050

0 0

Pu

'tr,

C379

8lb

\...J

ml

O@)
:J@)

LL

ijaoooooooo

~

~O~~

~

0 0 0 0 010 0 0

0

<0

0

~n

'<tp

~

@
@I'

C340b

@-R320-@OO323©

C385

[

0___

~

T

304

FL30~3

0

)gE"

OO31

~;(r6T324joool()otoOo~

ro

5@

0'

01

~

~

~

(Q)

P313

88100~T308

9J~~t9~~

0

8Jb::10~

U301

C352CCP

@R327@ @R328@

~

~

0

I')

~

A

'dC347

~O~

OT30

0 l"I'"'h 0 0 0
Ul

~C351

@R324@ 4 @R373@

00325@

@R389@@C450

68@

FU08

§@@l

@@§

@R371~!I@[e-mail];,

~I')O

0 I=- 0

0

~

~@R369@

~~Ul~

9?1

000

~:lJ9

OO372@~~

0304

00

00000000

~~

(}U

0{)

0 0 0 0 0 0 0 0

<0

C3 9

~n

C436b

@-R374-@@R377@@~

NP

~

C353

~

@ @ 0 0 0 0 0

lO

gj

R350

~

~

@c::::J@ FL305

~~~o01~

~

§§§

@R353IlR352@J~[;

~~

10

01

~

013260:;

100010

~:r9~

oAo 10

000

10001

or3180~

~t.O~~@R354@~tO

FfJ443

't:1_

U309

lO

rrn

'<t~C44

00

C448b

@R381@ @R382@ 2 @R363@ @R364@

~379@

@R388@(Q)

~O~~

df32

0

7

~378@

1

:q-

~

FU06

§§§

~

131 6

~~~o01

o

~

~~Po,~dC391

~I

01

0

0

~R449

~

Y@R351@

C3ee.~

060

DJOJe·'-''-''':~'':'':''~..loo/...:''''

3J

CO>

C445

[0

~

1

01

01"31

°oo~oooJ

~a9

200060000

0§]0 0 0 0 0 0 oT321

C404b

@R35~

@-R356.-@@R359@

C4160

frV,

'0

013200

~~~

~~M

U306

'<t

_ 000

:~--C415

00

@R361@

~41

~

@R387@@

, 0 0 0 0 0

~~.

C409

0-40

o-e..C41 0

@R360@C41

o

AC411

'd

~0~C412

CO>

3

@.~

~1417

~

0

If)

@

u041@lc309

C312

~

L310 0

~

(:J

[Q]

o >

2®"

8 @ <O>C3150@

(1

o @R38OO 1

Y30,(@

@R31

o @R309@

@

~c~

O@ I

Pi

(QJ

~

I~@t

f@1

I.@JCo

..J L

17

0 0

~~

L305

~

8:()

lQJ

lQ]

CO>

\.C319

~316

@

gOO

~x

~o

0 0:: 0 0 0

0302

@ @ @

@§I§]

C306~

~314

C30]©> @ I 0 8 0

g

U07

~

I')

@)

~

tR30~

@g

0 ©

+

387

'<to@oo

~

VR303@

00339@

~U

~F?>

r@

~

0307

Receive

0

U305

0 0 0 0 @

O~

@R348@~

@IC389C388QI'AAI

0 8 0 @

:1

0

I')

(Q) N

(L

(Q)

(Q) @ 03°05

Board

I

@VR301

~

,@

O~

~

Component

ID

lQ]

Versions 1

VRJ02

@

C355@

DR322

@ (Q)

Figure

70714000

14

Layout

and

~

C~[R30~

@I')

0 0 0 0 @

nO

@R330@~

C356

~

C357

R376

~

(OJ

'U

~

ID

(Component

2

0:....

~

@ro@R384@1@

@

D@oro

VR307@

@ @ J 0

@R375@

Side)

lQ]

[Q]

\...J

0311

~0

~I@

I@

lQ]

U31

0

~

0 0 0 0 @

@!C453C452<:>i.::i@R366@C420

I C419i@

o

0 g 0

~

~I

~

I')

(Q)

(L

(Q)

em

@VR305

0 l @ 0 0

o@

0

@

R357

@I

1lQ])

IQ1

~

lQ]

0309

VR306 .

©@N

+~0

@:c421

@

R358

~

.

U307

0 0 0 0 @

~

0

~

I@@I

o

P~311

~

~

3-17

P301

R305

lK

R306

100

L312

10UH

0320

MPSH10

P320

C301

C302

o--1~~VC303

C301

5.6

4.7

4.7

r

pI'

pI'

pI'

L302

C302

.62

pI'

.SOpF .33

.SOpF .33

C303

.50 pF

C308 C313

C307

4.7

1.2pF

.33

.33

pI'

pI'

2.2pF

pI'

2.2

pI'

.50

pI'

pI'

.33

PI'

pI'

.33

pI'

1 r

T I I

FREQUENCY

169-172

206-208

212-214

L301

MHz
MHz
MHz

C305

I lOOP/,

or

T

C421

C422

150

pI'43PI'

50

180 PI'

180

pI'50pI'43pI'

C30~

VC305

r

R307

2.2K

CF370

,C472

CF371

11.56

39pF

MHz

pI'43pI'

11.075
MHz

11.075
MHz

C306

VC306

T

C315
.01

ur

I

or

C316

.0lUr

R313

10K

R314

2.2K

+-+----t------.---.-,=~----

0370

MPSH10

~P370

FB371

T

CF420
CF421

12.36
MHz

11.7
MHz

11,7
MHz

CF470

CF471

13,1

MHz

12.5

MHz

12,5

MHz

L308

.15/lH

.1O/lH

.1OIIH

Y301

171.005
MHz

207.6
MHz

213.6
MHz

Y370

Y420

12.015

12,815

MHz MHz

12,155

11.53

MHz

11.53

12.155

MHz

Y470

12,555

MHz

12.955

MHz MHz

12.995

MHz

MHz

0420

MPSH10

T

~P420

FB421

R470

4.7K

0470

MPSH10

R471

lK

Cf470

Figure 15

SchematicDiagram Receive

Version 1 - 750309

PCB Assembly 878662

C479

.OO47UF

Board

P470

WV~=::':-+-III--+..llj·::-""

3-18

(j

r:--------,

-

-.

o

Figure

Q320

1

n

olJ

O

00

00

Board

~

~

II:

D

C336

~O

Iil

Receive

vo~oQ01o

o

C30l

R370

7

L370

0

Y370

~

C37~ 0 0

0

CF372
C37f'

CJo

C302

Q37b

L373

0 388

C370

CF'"

ril

L37l

Uhy

~

00

rvC371~0i

;

~

3

0

iO~0>

og

C303

R37l

R380

O

-e>

<:>

....

00

00

a -c:>-

13

0

R383

Q

FB371

~

\:T

R379

C3890-C:>-L03C20320

01

~

C324'QOU

~O~

,.

~

C3260

I~~o~

-c:>-

C305

R30l

-e>

R303

L~

R320

\()

CF32

L32l

Y320

Ii

0

0 0 a

oJc32()'0~GO§i

13

0 0 0

Componen~

0

1000I~':CD~'t

L304

~

g c=:Jo

OR321

R330

<:>

-e>

R329

0

0°

C3390OC470

00

R334

\;0

Ii!

-c:>­R333

C4740

~~

C4760

Q

~

p

306

FB321

L\

~

Y470

c:::Ji$

5c::>

C30

R470

-e>

L470

1'"(

A

Layout

• P30l

r L3l2

C3150

-e>

R313

L4703

CF47
L47l

l::

0

° 00 0

~

:

0 0

(Foil Side)

0'(0

c=:J­c=:J-

L3ll

R471j\

D Ii

Q470

486

U

~O

O~

550'

IL

~

§c!i0

tr~

OC3l4

(J'

L3l0

,c=:J-

Q303IC~6

~

R480
:s;(:R479

---

0

00

II:

00

-c:>­R483

C4890°
R484

C4240

i

000>~

If'\

°O"(d

5 C42a 0 0 >

~

I

QAgT

L3l3

-g2

~3l4

FB421

G-

L4~

-c:>-

R~::o

L420"'0L42l

Y420

8 5

c::::>

0

°

r:J

g08

8

0

C3ll

R31Jc):

-c::::I-

L308

R4210 R430

Q420D

'<-)01;1

CF420

a~o~~-c:>-

0 C

"'0

~00~

00C]

01'~

0

(J

0

C3l2

0D

OJ;)

Q302 0

i6i?7

L307

.:

I

I

II

~

g R429

..

0 0OC439

i0 0 00R434

IL

2l(J

R433

0

"

~

>

D

~a

>

o~

~<:>

o

3-19

o

L372

0~38l>ic]oD

C378

-e:>-

R378

~0

Q37l

c::::>

C385

Receive

O~D~DO

L322

C328 C334

Board

(J°D>

(J

-e:::>-

R328

P370

Figure 17B

Component

Version 2

0

11:

c:>

L472

C335

Layout

750309

--

.()°C]°D

' g478

C484

0

P~20

(Component Side)

-c:>­R478

D~2o~:O°

c:::>

C485

470

L422

G

(J

C434

D°

~

R42~

P420

~

C435

PJ01

9

C301

R306

"0

R305

IK

RJ15

C"2

47K

CJ<lB

I,001uF

,

C3"

CJ<l~V"OB

"'05yI.305

CJ',

100PF I

C318

I·oo1uF

1'"

1'"

,

",307

3.JK

CJ15

,01UF I

RJ12

470

L312

'OUH

R31J

1.311

10UH

,

10K

PJ20

G

T

C316

,01Uf

RJ14

2,21<

FREQUENCY
169-172
206-208
212-214

CJ01 C302

MHZ

S.6PF .B2PF

MHZ

4.7PF .50PF
4,7PF ,50PF .33PF .33PF

MHZ

C30J

C307

.SOPF

.SOPF

.33PF .33PF

FREQUENCY

CJOB

CJ1J C421 C422 C472

1.2PF

.SOPF
.J3PF 180PF

.33PF
,J3PF

.33PF

DEPENDENT

4JPF 39PF

1S0PF

SOPF

laOPF

SOPF

COMPONENTS

CF370
CFJ71

11,58 12,J8

MHZ

11.075

43PF

MHZ

11.075

4JPF

MHZ

CF420 CF470
Cf.421

CF471

MHI

MHZ

11.7

Mill

MHZ

11.7

MHI

MHI

TABLE

1J.1

12.5

12.5

Y301 Y370 Y420 Y470

L306

171.905

MIlZ

207.6

MHZ MHZ

21J.8

MHl

12.015

MHZ

11.53

11.53

MHZ MHZ MHZ

.22UH

.15UH

.1SUH

12.815

12,155

12.155

\2.555

MHZ

MHZ

12.955

MHZ

MHZ

12.9"

P420

G

,

~P470

'I

L-

I

~

Figure 18

Schematic Diagram Receive Board

Version 2 . 750309

PCB Assembly 878662

3-20

PCB Receive Assembly 878522-*

lJ

Part

Ref

No.

PCB300/400

Description

Printed Circuit Board, Receive

No.

70714000

Capacitors

All

capacitors in microfarads unless noted.

Part

Ref

No.

1

C301

2

C301

,3

C302 (Not Used)

1

C303

2

C303

,3

C304

1

C305

2

C305

,3

C306
C307, C308 Ceramic, 100
C309, C310
C311
C312 (Not Used)

1

C313

2

C313

,3

C314

1

C315

2

C315

,3

Description

Ceramic, 5.6 pF
Ceramic, 4.7 pF

Ceramic, .82 pF
Ceramic,.5pF

(Not Used)
Ceramic,.5pF
Ceramic,

.33

pF

(Not Used)

pF

(Not Used)
Ceramic, .001

Ceramic, 1.2 pF 52007009
Ceramic,

.33

pF

(Not Used)
Ceramic, 4.7 pF 35693003
Ceramic, 2.2 pF 35693000

No.

35693004
35693003

52007003
52007000

52007000
52007012

35693019

52676101

52007012

C316 (Not Used)
C317
C318
C319
C320

Ceramic, .001 52676101

Ceramic, 56

Ceramic, 47

pF
pF

Ceramic, 4700 pF

35693016
35693015

52676105
C321, C322 Ceramic, 12 pF 35693008
C323

Ceramic, 36
C324 Ceramic,
C325
C326, C327
C328
C329
C330

Ceramic,

Ceramic,

Ceramic, 56 pF 35693016

Ceramic, 470

Ceramic, 82 pF 35693018

pF

9.1

pF

10

pF 35693007

.01

Pf

C331 Ceramic, 100 pF

35693078
35693056

52676107

35693026

35693019
C332 (Not Used)
C333 Ceramic, 8.2 pF
C334

C334

1

2

,3

Ceramic, .001
Ceramic, 6.2 pF

35693006

52676101

35693074
C335, C336 (Not Used)
C337-C340 Ceramic,

.01
C341 Ceramic, 560 pF
C342, C343 Ceramic, 27

pF
C344 Ceramic, 470 pF
C345, C346
C347

Ceramic,

Ceramic, 2.2 pF 35693000
C348 .Ceramic, 47
C349 Ceramic,
C350

Ceramic,
C351 Ceramic,
C352 Ceramic,
C353 Electrolytic,
C354

Ceramic, 1500 pF 35693032

.01

pF
.01
.1

100

pF 35693019

.01

10

C355 Electrolytic, 1

52676107
35693027
35693012
35693026
52676107

35693015
52676107
52676113

52676107
52723008

51821106
C356 Poly Film, .0022 52719053
C357 Poly Film, .0056 52719068
C358 Ceramic, 330 pF 35693024
C359 Ceramic,

1

C360
C360

2

,3

Ceramic, 50
Ceramic, 56

.01

pF
pF

52676107

35693049

35693016

RefNo.
C361

1

C362

2

C362

,3

1

C363

2

C363

,3

1

C364

2

,3

C364

1

C365

2

C365

,3

1

C366

2

C366

,3

1

C367

23

C367
C368
C369-C372

1

C373

2

C373

,3

C374, C375

C376
C377, C378
C379

1

C380

2

,3

C380
C381

C382
C383
C384
C385

C386
C387
C388
C389
C390
C391

1

C392

2

,3

C392

1

C393

2

,3

C393

1

C394

2

,3

C394

1

C395

2

C395

,3

1

C396

2

,3

C396

1

C397

2

,3

C397

1

C398

2

C398

,3

1

C399

2

,3

C399

1

C4OO

2

C4OO

,3

C401-404

1

C405

2

C405

,3

Description

Ceramic, 390 pF
Ceramic, 75 pF 35693061
Ceramic, 82 pF 35693018
Ceramic, 68 pF 35693017
Ceramic, 75 pF 35693061
Ceramic, 1

pF
Ceramic, 1.1 pF
Ceramic, 39 pF
Ceramic, 43 pF
Ceramic, 1 pF 35693054
Ceramic,

1.1

pF 724772
Ceramic,50pF 35693049
Ceramic, 56 pF 35693016
Ceramic, 390 pF 35693025
Ceramic,

.01
Ceramic, 470 pF
Ceramic, 560 pF
Ceramic, 24 pF
Ceramic,

470 pF
Ceramic, .01
Ceramic, 2.2 pF 35693000
Ceramic,39pF
Ceramic, 43 pF
Ceramic, .01
Ceramic,

.1
Ceramic, 100 pF
Ceramic,

.01
Electolytic, 10
Ceramic, 1500 pF 35693032
Electrolytic, 1
Poly Film, .0022
Poly Film, .0056
Ceramic, 330 pF
Ceramic,

.01
Ceramic,43 pF
Ceramic,47pF
Ceramic, 330 pF
Ceramic, 390 pF
Ceramic, 68 pF 35693017
Ceramic,75 pF 35693061
Ceramic,50pF 35693049
Ceramic, 62 pF
Cerainic, .82 pF
Ceramic, 1pF
Ceramic, 36 pF
Ceramic, 39 pF 35693014
Ceramic, .82 pF 724771
Ceramic, 1 pF
Ceramic, 43 pF
Ceramic, 47 pF 35693015
Ceramic, 330 pF
Ceramic, 390 pF 35693025
Ceramic, .01
Ceramic, 390 pF 35693025
Ceramic, 470 pF 35693026

878522-*

Frequency *Dash No.

169.505-171.905 MHz -171

206.000-207.800 MHz

-207 2

212.000-213.800 MHz -213

Part

No.

35693025

35693054
724772
35693014
35693070

52676107
35693026
35693027
35693060
35693026
52676107

35693014
35693070
52676107
52676113
35693019
52676107
52723008

51821106
52719053
52719068
35693024
52676107
35693070
35693015
35693024
35693025

35693071
724771
35693054
35693078

35693054
35693070

35693024

52676107

Reference No.

1

3

3-21

PCB Receive Assembly 878522-* (Continued)

RerNo.

1

C406

2

C406

,3

1

C407

2

C407

,3

1

C408

2

,3

C408
C409, C410

C411

1

C412

2

C412

,3

C413

C414
C4i5
C416

C417

C418
C419
C420

C421

C422

C423

1

C424

2

C424

,3

1

C425

2

C425

,3

1

C426

2

C426

,3

C427

I

2

C427

,3

C428

1

C429

2

C429

,3

C430

1

C431

2

C431

,3

1

C432

2

C432

,3

C433-C436

1

C437

2

C437

,3

1

C438

2

,3

C438

1

C439

2

C439

,3

C440
C441-C442
C443

1

C444

2

,3

C444
C445

C446
C447
C448
C449
C450
C451
C452
C453
C454
VC301-VC307

Description

Ceramic, 20 pF
Ceramic, 24

pF
Ceramic, 20 pF
Ceramic, 24

pF
Ceramic, 330
Ceramic, 270
Ceramic,

.01
Ceramic, 2.2
Ceramic, 36 pF

pF
pF

pF

Part

No.

35693048
35693060
35693048
35693060
35693024
35693076
52676107
35693000

35693078
Ceramic, 39 pF 35693014
Ceramic,
Ceramic,

.01
.1

52676107

52676113
Ceramic, 100 pF 35693019
Ceramic,

.01

Electolytic, 10

Cel'amic, 1500
Electrolytic, 1
Poly Film, .0022
Poly Film, .0056

Ceramic, 330
Ceramic,

pF

.01
Ceramic, 39 pF
Ceramic,43pF
Ceramic, 270

pF
Ceramic, 330 pF
Ceramic, 62 pF

pF

52676107
52723008
35693032
51821106
52719053
52719068
35693024
52676107
35693014
35693070
35693076
35693024

35693071
Ceramic,68pF 35693017
Ceramic,43pF 35693070
Ceramic,50pF 35693049
Ceramic, .82 pF 724771
Ceramic,30pF

35693046
Ceramic, 33 pF 35693013
Ceramic, .82
Ceramic, 39 pF
Ceramic, 43 pF

pF

724771

35693014

35693070

Ceramic, 270 pF 35693076
Ceramic, 330 pF
Ceramic,

.01

Ceramic, 390 pF

Ceramic, 470 pF

35693024
52676107
35693025

35693026
Ceramic,18pF 35693010
Ceramic, 20

Ceramic,18pF

pf

35693038

35693010
Ceramic, 20 pf 35693038
Ceramic, 270 pF 35693076
Ceramic,

.01

52676107

Ceramic, 2.2 pF 35693000

Ceramic, 30 pF 35693046
Ceramic, 33 pF
Ceramic,

Ceramic,

.01

.1
Ceramic, 100
Ceramic,
Electolytic,

.01

10

pF

35693013
52676107
52676113
35693019
52676107

52723008
Ceramic, 1500 pF 35693032
Electrolytic, 1

51821106
Poly Film, .0022 52719053
Poly Film, .0056 52719068
Ceramic, 330
Capacitor, Variable

pF

35693024

723086-4

RerNo.

0301
0302

0303
U304
0305
0306
0307
0308
U309
0310

DescrIption

Intergrated

Circuits

IC, NE614
IC,LM393
IC, NE 5532AN 53295001
IC, NE614 760375
IC, NE 5532AN
IC, NE614
IC, NE 5532AN
IC,LM393 53284000
IC, NE614
IC, NE 5532AN 53295001

Potentiometers

5K

VR301

Potentiometer
VR302 20KPotentiometer
VR303

5K

Potentiometer
VR304 20KPotentiometer
VR305
VR306
VR307
VR308
VR309

5K

Potentiometer

20KPotentiometer
5K

Potentiometer

20K Potentiometer
50K

Variable Resistor

and

Colis

Inductors

L3011L302 Coil, 2 1I2T,10nun

Coil, 1

L303
L303

L304
L304

L305
L306
L307

L307
L308

L308
L309

L310
L310

2

,3

1

2

,3

1

2

,3

1

2

,3

1

2

,3

3/4T,

Coil, 1 1I4T,
Coil, 1 3/4T,
Coil, 1 1/4T,
Coil, MC120 red wlcase
Coil,

1I4Tred w/case

Coil, 13/4T,
Coil, 1 1I4T,
Inductor, .151lH
Inductor, .11lH
Inductor, 1mH
Coil, MC120 blue w/case
Coil, MC120 green w/case

Transistors

Q301 Transistor,

NE

25137
Q302, Q303 Transistor, MPS-901
Q304 Transistor, MPS-3640
Q305 Transistor, MPS-3704
Q306
Q307
Q308

Transistor, MPS-3640
Transistor, MPS-3704

Transistor, MPS-3640
Q309 Transistor, MPS-3704
Q310
Q311

Transistor, MPS-3640 54734000

Transistor, MPS-3704

878522-*

Frequency *Dash No. Reference No.

169.505-171.905 MHz -171

206.000-207.800 MHz -207

212.000-213.800 MHz -213

Part

No.

760375
53284000

53295001
760375
53295001

760375

57148068
57148071
57148068
57148071
57148068
57148071
57148068
57148071
723091-1

724778
724777
724766
724777
724766
724775
724765
724777
724766
35689041
35689045
35689035
724767
724769

760488
760376
54734000
54712000
54734000
54712000
54734000
54712000

54712000

1
2
3

3-22

PCB

Receive Assembly 878522

M

*

(Continued)

o

Ref

No.

Crystals

Crystal FilterInsulator
MX301
Y301'

2

Y301

3

Y301
FL3011FL302
FL303

2

FL303

,3

FL304'

2

FL304

,3

FL305'

2

FL305

,3

FL306'

2

FL306

,3

FL307'

2

FL307

,3

FL308'

2

FL308

,3

FL309

All resistors in ohms, 1/8

R301
R302 10K
R303
R304
R305

R307 100

R306

i

R308

2

R308

,3

R309-R311 10K
R312 22
R313
R314 4.7K
R315 1.5K
R316 16K

R317
R318
R319

R320

R321

R322

R323

R324

R325-R327 10K

R328

R329-R331 10K

R332

R333 1.5K
R334

R335, R336

R337

R338

R339

R340 22K

R341

R342 220K

R343-R345 10K

R346 68K

R347-R349 10K

R350 4.7K

Mixer, ASK-1
Crystal, Receive, 171.905 MHz
Crystal, Receive, 207.800 MHz
Crystal, Receive, 213.800 MHz
Filter, 10.7 Crystal
Filter, 11.56 MHz Crystal
Filter, 11.075 MHz Crystal
Filter, 11.56 MHz
Filter, 11.075 MHz Crystal
Filter, 12.36 MHz Crystal
Filter, 11.7 MHzCrystal
Filter, 12.36 MHz Crystal
Filter, 11.7
Filter, 13.1
Filter, 12.5
Filter, 13.1
Filter, 12.5 MHzCrystal
Filter, SFE 10.7 MHz

lK

130
10
lK

470

180

240

220

330

l.5K
10M, 1/4 watt
10K
22K

lOOK
220K

68K

4.7K

16K
220

l.5K

10M, 1/4 watt

10K

lOOK

Description

and

MHz
MHz
MHz
MHz

Watt,

Resistors

Filters

Cryst31

Crystal
Crystal
Crystal
Crystal

5%,

J red

unless noted.

Part

No.

450471
760382
780089-1
780089-2
780089-3
780087-0
780087-4
780087-7
780087-4
780087-7
780087-5
780087-2
780087-5
780087-2
780087-6
780087-3
780087-6
780087-3
52990001

52154060
52154036
52154081
52154108
52154060
52154084
52154068
52154078
52154036
52154100
52154075
52154044
52154056
52154031
52154076
52154072
52154056
52154185
52154036
52154028
52154012
52154004
52154036
52154016
52154036
52154044
52154056
52154031
52154076
52154056
52154185
52154036
52154028
52154012
52154004
52154036
52154016

52154036

52154044

Ref

No.

R351
R352 16K
R353, R354 220
R355
R356
R357
R358
R359
R360 220K
R361-R363 10K
R364 68K
R365-R367 10K
R368 4.7K
R369
R370
R371, R372 220
R373
R374
R375
R376
R377
R378
R379-R381
R382 68K
R383-R385 10K
R386 2.2K
R387-R390

P301-P307
P308"P311
P312
P313

1'301-1'303
1'304,1'305 Transformer
1'306,1'307 (Not Used)
1'308-1'324

D301-D304 Diode, IN4148

Frequency

169.505-171.905 MHz

206.000-207.800 MHz

212.000-213.800 MHz

Description

l.5K

l.5K
10M, 1/4 watt
10K

22K

lOOK

l.5K
16K

l.5K
10M, 1/4 watt
10K

22K

lOOK

220K

10K

10K

Connectors

(Not Used)

3 Pin Header

(NotUsed)

3 Pin Header

Transformers

Transformer

Transformer 724774

Diodes

878522-*

*Dash No. Reference No.

Part

52154056
52154031
52154076
52154056
52154185
52154036
52154028
52154012
52154004
52154036
52154016
52154036
52154044
52154056
52154031
52154076
52154056
52154185
52154036
52154028
52154012
52154004
52154036
52154016
52154036
52154052
52154036

670062

670062

724770
724774

52228000

-171 1

-207 2

-213 3

No.

3-23

PCB Receive Assembly 878662-*

Ref

No.

Description

Printed Circuit Board, Receive

Capacitors

All capacitors in

Ref

No.

1

C301

2

,3

C301

1

C302

2

C302

,3

1

C303

2

C303

,3

C304, C305
C306
C3071

23

C307

1

C308

23

C308
C309
C310

Ceramic, 5.6
Ceramic, 4.7
Ceramic, .82

Ceramic,.5pF

Ceramic,.5pF

Ceramic, .33
Ceramic, 100
Ceramic, Z5U, .001

Ceramic,
Ceramic, .33

Ceramic, 1.2
Ceramic, .33

Ceramic, Z5U, .001 52676101
Ceramic, 33 pF 35693013

microfarads

Description

.5

pF

C311 Ceramic, 47 pF
C312

1

C313

2

C313

,3

C314-C316
C317
C318
C319
C320
C321
C322
C323
C324
C325-C327
C328
C329
C330, C331
C332

C333, C334

C335

C336

C337

C338
C339
C340
C341-C369

C370

C371
C372
C373
C374
C375-C377
C378
C379
C380, C381
C382
C383, C384
C385
C386
C387

Ceramic, Z5U, .0047

Ceramic,.5pF

Ceramic,

.33

Ceramic, Z5U,

Ceramic, 100

Ceramic, .00I 102881301

(Not Used)
Ceramic, Z5U,
Ceramic, 180
Ceramic, 56 pF 35693016
Ceramic,

68

pF
Ceramic, 220
Ceramic, Z5U,.1 52676113
Ceramic,

100
Ceramic, Z5U, .0047
Ceramic, 120 pF 35693020
Ceramic, Z5U,
Electrolytic, 1.0 52723025
Mylar, .015 52719058
Ceramic, Z5U,
Mylar, .0022 52719053
Mylar, .0056 52719068
Ceramic, 330
Ceramic, Z5U, .001

(Not Used)
Ceramic, Z5U,
Ceramic, 180
Ceramic,
Ceramic,

50

pF 35693049

68

pF
Ceramic, 220
Ceramic,

Z5U,.1
Ceramic, 100
Ceramic, Z5U, .0047 52676105
Ceramic, 120
Ceramic, Z5U,
Electrolytic, 1.0 52723025

Mylar, .015 52719058

Ceramic, Z5U,

Mylar, .0022 52719053
C388 Mylar, .0056
C389
C390
C391-C419

Ceramic, 330
Ceramic, Z5U, .001 52676101

(Not Used)

pF
pF
pF

pF

pF
pF
pF

pF

pF

pF

.0

pF

.01

pF

pF

.1

.1

pF

.01

pF

pF

pF

pF

.1

.1

pF

unless noted.

I

Part

No.

750309

Part

No.

35693004

35693003
52007003
52007000
52007000
52007012
35693019
52676101
52007000
52007012
52007009
52007012

35693015
52676105
52007000
52007012
52676107

723023

52676107
35693022

35693017

35693023

35693019
52676105

52676113

52676113

35693024
52676101

52676107

35693022

35693017

35693023

52676113

35693019

35693020

52676113

52676113

52719068

35693024

Ref
C420

C421
C421

C422
C422

C423

No.

1

2

1

2

,3

,3

Description

Ceramic, Z5U,
Ceramic, 150
Ceramic, 180 pF 35693022
Ceramic,43pF
Ceramic, 50 pF 35693049
Ceramic,

68

pF
C424 Ceramic, 220
C425-C427 Ceramic, Z5U,
C428
C429

Ceramic, 100

Ceramic, Z5U, .0047 52676105
C430, C431 Ceramic, 120
C432

Ceramic, Z5U,.1 52676113
C433, C434 Electrolytic, 1.0
C435
C436
C437

Mylar, .015 52719058

Ceramic, Z5U,

Mylar, .0022 52719053

.01

pF

pF

.1

pF

pF

.1

Part

No.

52676107

35693021

35693070

35693017

35693023
52676113
35693019

35693020

52723025

52676113

C438 Mylar, .0056 52719068

C439

Ceramic, 330 pF

C440 Ceramic, Z5U, .001

C441-C469

C470

C471

1

C472

2

C472

,3

C473
C474
C475-C477 Ceramic, Z5U,
C478 Ceramic,
C479
C480, C481
C482
C483, C484 Electrolytic,

(Not Used)
Ceramic, Z5U,
Ceramic, 150

.01

pF
Ceramic, 39 pF
Ceramic,43pF 35693070
Ceramic, 68 pF
Ceramic, 220 pF 35693023

.1

100

pF

Ceramic, Z5U, .0047

Ceramic,

Ceramic, Z5U,

120

pF 35693020

.1

1.0
C485 Mylar, .015
C486
C487
C488
C489
C490
VC301-VC308

Ceramic, Z5U,
Mylar, .0022 52719053
Mylar, .0056 52719068

Ceramic, 330 pF 35693024

Ceramic, Z5U, .00I

Capacitor, Trinuner

Intergrated

.1

Circuits

U320 IC, MC3359 MOT
U321

IC, NE5532 53295001
lJ370 IC, MC3359 MOT
U371
lJ420
U421

IC,NE5532

IC, MC3359 MOT 760494

IC,NE5532
1I470 IC, MC3359 MOT

IC,

NE

U471

5532 53295001

35693024
52676101

52676107
35693021
35693014

35693017

52676113
35693019
52676105

526761 i3
52723025
52719058
52676113

52676101
723086-4

760494

760494

53295001

53295001
760494

878662-*

Frequency *Dash No.

171

MHz -171
207 MHz -207
213 MHz

-213

Reference No.

I

2

3

3-24

l)

PCB Receive Assembly 878662-* (Continued)

Ref

No.

VR320
VR321
VR370
VR371
VR420
VR421
VR470
VR321

L301,L302
L303,L304
L305
L306

1

L307

2

L307

3

L307

1

L308

2•3

L308
L309
L310
L311, L312 Inductor,
L313
L314-L319
L320
L321
L322
L323
L324-L369
L370
L371
L372
L373
L374-L419
L420
L421 Inductor, 3.95

L422

L423
L424-L469
L470
L471
L472
L473
FB321
FB371
FB421

Q301 GAASFET, NE 25139

Q302
Q303
Q320
Q321, Q322
Q370
Q371, Q372
Q420
Q421, Q422
Q470
Q471,Q472

Description

Potentiometers

20KPotentiometer
50K

Potentiometer

20K

Potentiometer

50K

Potentiometer
20Kpotentiometer 57148071
50K

Potentiometer
20K

Potentiometer
50K

Potentiometer

Colls

and

Chokes

Coil, 2

1I2T,10mm
Coil, 2 1/2
Coil, 2
Coil,2

CT,10mm
1I2T,10mm
1I4T,

114

Tap, 10
Coil, TOKO, Red
Coil, TOKO, Brown
Coil, TOKO, Black
Inductor, .22/!H
Incuctor, .15 /!H
Coil, 2

112CT10

Inductor, 56

1I4T,

Coil, 2

10

/!H
/!H

114

mm

Tap, 10

(Not Used)
Inductor,
Inductor, 3.95

10

/!H

/!H
Coil, 455 kHz, discriminator 52982000
Coil, IF, 10.7 MHz 53029000

(Not Used)

Inductor,

Inductor, 3.95

10

/!H

/!H
Coil, 455 kHz, discriminator

IF,

Coil,

10.7 MHz

(Not Used)

Inductor,

10

/!H

/!H
Coil, 455 kHz, discriminator 52982000
Coil, IF,

10.7

MHz

(Not Used)
Inductor, 10
Inductor, 3.95

/!H

/!H
Coil, 455 kHz, discriminator
Coil,

IF,

10.7 MHz
FerriteBead
Ferrite Bead
Ferrite Bead

Transistors

Transitor, MPS901
JFET, J309
Transistor, MPSH

10
Transistor, MPS3704 54712000
Transistor, MPSH10
Transistor, MPS3704
Transistor, MPSHIO 54736000
Transistor, MPS3704
Transistor, MPSH

10

Transistor, MPS3704 54712000

Part

57148071
57148072
57148071
57148072

57148072
57148071
57148072

. 724778

724766
724775

mm

724765
723403-3
723403-2
723403-1
35689047
35689041
724766
35689020
35689011

mm

724765

35689011
724774

35689011
724774
52982000
53029000

35689011
724774

53029000

35689011

724774

52982000
53029000
56632007
56632007
56632007

760392
760376
54722000
54736000

54736000
54712000

54712000
54736000

No.

Ref

No. Description

Crystals

and

Crystal Filter Insulator
Crystal Insulator
Mixer,

HY301
Y301
Y301
Y301
Y320
Y370
Y370
Y420
Y420
Y470
Y470

1

2

3

1

2•3

1

2•3

1

2•3

ASKI
Crystal, Receive, 171.905 MHz 780092-1
Crystal, Receive, 207.8
Crystal, Receive, 213.8
Crystal, Receive, 10.245 MHz 780088
Crystal, Receive, 12.015 MHz
Crystal, Receive, 11.53 MHz 780088-3
Crystal, Receive, 12.815 MHz 780088-7
Crystal, Receive, 12.155 MHz 780088-4
Crystal, Receive, 12.555 MHz 780088-8
Crystal, Receive, 12.955 MHz

CF320, CF321 Filter, 10.7 Crystal
CF322

1

CF370

2•3

CF370

1

CF371

2•3

CF371

CF372

1

CF420

2

CF420

,3

1

CF421

2

CF421

,3

CF422

1

CF470

2•3

CF470

1

CF471

2

CF471

3

•

CF472

All resistors in

Filter, 455
Filter, 11.56 MHz Crystal
Filter, 11.075 MHz Crystal
Filter, 11.56 MHz Crystal 780087-4
Filter, 11.075 MHz Crystal
Filter, 455
Filter, 12.36 MHz Crystal

Filter, 11.7 MHz Crystal 780087-2

Filter, 12.36 MHz Crystal
Filter, 11.7 MHz Crystal
Filter, 455

Filter,
Filter,

Filter,
Filter, 12.5 MHz Crystal
Filter, 4%% kHz, Ceramic

kHz

Ceramic

kHz

Ceramic

kHz

Ceramic

13.1

MHz Crystal 780087-6

12.5

MHz

13.1

MHz

ohms,

lIS

Watt,

Resistors

R301

lK

R302 10K
R303 33
R304
R305

R306

R307

10
lK
150

3.3K

R308, R309 10K

R310

R311, R312
R313
R314
R315

R316-R319
R320
R321
R322
R323

R324

R325

R326

100

470

10K

2.2K

47K

(Not Used)
I.2K
220
68K
l.5K

lK

330K
220K

878662-*

Frequency

171

MHz -171

*Dash No.

207 MHz -207
213 MHz

-213

Filters

Crystal
Crystal

5%,

MHz
MHz

unless noted.

Reference No.

Part

No.

450471
450474
760382

780092-2
780092-3

780088-6

780088-5
780087-0

723088
780087-4

780087-7

780087-7
723088
780087-5

780087-5
780087-2

723088

780087-3

780087-6
780087-3
620088

52154060
52154036
52154096
52154108
52154060
52154301
52154048
52154036
52154084
52154068
52154036
52154052
52154020

52154058
52154076
52154016
52154056
52154060
52154000
52154004

1

2

3

3-25

Resistors (Continued)

Ref

No. Description

PCB Receive Assembly 878662-* (Continued)

Part

No.

Ref

No. Description

Part

No.

R327
R328 13K 52154033
R329, R330 220K 52154004
R331 100
R332-R334 10K
R335-R369
R370 1.2K
R371 220
R372
R373
R374 1K
R375
R376 220K 52154004
R377
R378
R379, R380
R381 100 52154084
R382-R384 10K 52154036
R385-R419 (Not Used)
R420
R421 220
R422 68K 52154016
R423
R424
R425 330K 52154000
R426

lOOK

(Not Used)

68K 52154016
l.5K

330K 52154000

lOOK
13K
220K

1.2K

1.5K
IK

220K

52154012

52154084
52154036

52154058

52154076

52154056
52154060

52154012
52154033
52154004

52154058
52154076

52154056
52154060

52154004

R427

R428 13K 52154033
R429, R430 220K
R431
R432-R434
R435-R469 (Not Used)
R470 1.2K 52154058
R471
R472 68K 52154016
R473
R474
R475 330K 52154000
R476 220K 52154004
R477
R478 13K 52154033
R479, R480 220K 52154004
R481 100 52154084
R482-R484 10K

P301 3 Pin Header
P320 3 Pin Header 670062
P370 3 Pin Header 670062
P420 3 Pin Header
P470 3 Pin Header

lOOK

100
10K

220

l.5K

1K

lOOK

52154012

52154004
52154084
52154036

52154076

52154056
52154060

52154012

52154036

Connectors

670062

670062
670062

3-26

(\

\ )

AUDIO BOARD

AUDIO BOARD CIRCUIT
DESCRIPTION

C)

The audio board receives signals from the receive
board, the headsetmicrophone, intercom input and

,auxiliary input, and outputstothe transmit board,

the headset earpiece, an external speaker, intercom
out and auxiliary out (see block diagram).

Receive Expanders

Audio from the receive board is routed through

Jl08, Jl09,
gainofthese devices is controlled bytheaudio level
at the rectifier pins
creases,
linear expander characteristic. This complements

the processing done in the transmitter. The audio
is then buffered and delivered to the remote select
switches.

JllO

and

JllltoU1l2

.(4

and' 16). As the level in-

so

does the gain, and this resultsina2:1

and U1l3. The

MicrophoneAmplifier

From the headset connector the microphone signal
is amplified by U103. Depending upon which type
of

microphone is used, S102 is set by the user

dynamic orelectret. Theelectret position provides

11

dB

an

output.

responds to either positive or negative peaks ex­ceeding about

tors Q106 and Q107 charge C120 and C121,
driving QI05 toward pinchoff. This reduces the
gain momentarily until the input signal is reduced.

Visual indication

D608 which is driven by U105 when the voltage at

pin

/isolates the time constantofthe amplifier from'that

of

the LED driver. The latter is much shorter than

the former, and causes the LED to extinguish im-

mediately upon removing the input signal. On

versions 1and 2 the LED will remain lit for several
seconds. VR604 is adjusted by the user for maxi­mum input with minimal limiting.

tum the microphone on and offand is driven by the

push-to-talk latch circuit. When
and held, the state
tums on Q110 and Q111 via D110. This lights
D609 and gates on the microphone audio. Releas­ing S110 tums off the microphone.

drop in gaintocompensate for the extra

The

amplifier is

1.1

volts in amplitude. Peak detec-

of

peak limiting is provided by

6exceeds halfa volt. D

of

Ul16Bfollows the switch and

peak

limiting, and

111

(version 3 and later)

QI04isused

SIlO

to

is pressed in

to

U116A does not change state under these condi-

C~82

tions because

If,

pulsed.
quick succession, C182 will be charged for the
second clock pulse and this will set U116A. Now

the microphone is latched on via D109 and will
remain on until S110 is depressed once again,
resetting U116A.

however, S110 is depressed twice in

Auxiliary

Audio from
balanced to single-ended by U101A. U101B,
UI02A, Q101,

ing amplifier identical to that described for the
microphone above. S

audio path for the auxiliary input but also lights

D607
When peak limiting occurs U105Ashorts out R120
and D607 is brought

JlOl

to

half-brilliancetoindicate active auxiliary.

is discharged when the clock is

Input

is attenuated and converted from

QI02

and

to

Amplifier

QI03

101

full brilliance.

form a peak limit-

not only enables the

Intercom Driver

UI07

A is configured as an AC current source

whose output

C125 divided by the value

voltage gain is dependent on the value
In this way many such intercom stations can be
connected in parallel without each successive sta-

tion loading the line. A single load resistor is
usually located in the power supply for the wired
intercom. On versions 3 and later, UI07B is used
to

drive the lower end
a current source and was added to provide more
headroom.
higher voltage ahead
section
base for compatability with a specific wired inter­com. S103 functions as either
switch.(Telex, Clearcom standard) or as a channel
AlB switch (RTS, Clem'com TW). In the case
where the intercom interface is disconnected by
S103, R186 functions as the load resistor. The full
secondary
the tap is used for 200 ohm systems. On version 2
and later, S
(100 mY) or high output (800 mY).

DIP

CUlTent

To

this end, U107 is operated from the

switch which is used to configure the

ofTlOl

112

allows selectionofeitherlow output

equals the input voltage at

of

R158. Thus the

of

the load.

ofTIOl.

of

the regulator. S104 is a 9

is used for 300 ohm intercoms;

This section is not

an

intercom onloff

3-27

Intercom

Since U107A is a current source, signals arriving
from an external intercom appear unloaded at pin

1and are coupled via C126 and R154
prevent intercom output signals from appearing at
the output
branch
U106A and U109 form a peak limiting amplifier
similiar
amplifier above, except that
of

a JFET to control the gain. The reason for this
is that the higher level signals being handled by
U106Awould cause high distortion
used.
resistor) together with an LED in the same package.
More current through the LEDreduces the value
resistance.

U

111

the headset while U108 drives the external speaker

jack. On versions 1 and 2 this signal was derived

by mixing the microphone signal with the intercom

output, via R175 and R177. On later versions the
intercom output alone is used, being first amplified

by U119A. S112B maintains the headset/speaker
level constant when switching intercom output

levels.

of

containing

to

CA10l

Headset

and

Ul19B

U106, these signals are nulled by the

that described for the microphone

is merely an LDR (light dependent

and

(U107B in versions 1and2)drive

Input

C124,

CA10l

Speaker

to

VRlOl

is used instead

if

a JFET were

Amplifiers

U106.

and

To

R152.

of

Auxiliary

UllOA
microphone, and receive board signals. U11OB
inverts the resultanttoprovide a balanced output.

mixes

together

Output

intercom

input,

Remote Transmit Circuit

When the transmit switch on the rear panel isinthe
remote position, the transmitter will only operate
when at least one receive squelch is open. On
versions 1 through 4 this is done with
turns on Q109. Versions 3 and 4 have a circuit
board error, however, which prevents this option

from working.

Ul15tothe left side (on the schematic)ofR195,
R198,
schematics show these inputs
modified, that is, connected
resistors. On versions 5 and above, U
replaced with
modifications are necessary.

R20l,

To

correct this move the inputs

and R204. The version 3 and 4

to

the right sideofthe

Ql12,

Ql13,

Ql14

Ul15

as

they are un-

and

Ql15

which

115

and

of

no

Power Supply

Q108 and U114 form a
supply.
5 volt reference while on later versions this comes
from U

U1l7.

On

versions 1 and2,ZD101 is usedasthe

117.

U112 and U

10

volt regulated power

113

are also supplied

by

is

Transmit

U106B mixes the intercom input, auxiliary input,

microphone and receive board signals together
modulate the transmitter. VR102 is usedtoset the
level going into the transmit compressor for proper
tracking. On versions 3 and later, U
four pole Chebyshev low pass filter with a cutoff
frequency
sion
as the call signal.

of

5 KHz. This istoprevent transmis-

of

the 20 KHz tone which Telex intercoms use

Mixer

and

Filter

118

to

acts as a

3-28

8.

ALIGNMENT PROCEDURE:

)

Equipment Required:

D Signal Generator
D Audio Generator
D Deviation Meter
D Audio Voltmeter

Connect the audio generator to the AUX

1.

jack

and set the outputto20 mV at 1

2.

Select the AUX pushbutton on

therront

IN

KHz.

panel.

Connect the signal generator to the Receive
Antennajack. Set the deviation to
1

KHz.

Setthe output to 1mV.Setthe frequen­cyto thechannel 1 frequency listed in the chart
of

the receive board alignment.

-

9.

Select the channel 1 pushbutton on the front
panel.

10.

Connect

TRANS jack.

11.

Connect the audio voltmeter to U106 pin

the

deviation

meter

±3 KHz at

I

to the

ANT

7.

0

Adjust VR601 (located just under the

3.

button
coun terclockwise.

4.

If

connect the load
panel.

5.

Connect the audio voltmeter to the AUX OUT

jack on

6.

Adjust VR101 for a minimum reading.

7.

Disconnect the generator and meter from the
AUX jacks and de-select the AUX pushbutton
on the front panel.

on

the

front

the base is configured

to

the

the

rear panel.

panel)

for

an RTS intercom

llC

jack pn the rear

I1C

to

maximum

push-

12A. On version 1 and 2 audio boards, adjust VR102

for

300 mV

12B. On version

sion 1 transmit boards, adjust VR102 for 1 volt
of

audio.

12C. On version

sion 2 transmit boards, first move the audio
voltmeter to
board). Then adjust VR102 for 140 mV
audio.

13. Adjust VR501 for

of

audio.

3 and later audio boards with ver-

3 and later audio boards with ver-

U501 pin 16 (on the transmit

of

±4.2 KHz deviation.

3-29/3-30 Blank

RECEIVER

1

-1

EXPANDER

I--"~

__

---------,

>--+

AUXOUT

o

RECEIVER

RECEIVER

RECEIVER

HEADSET

I.4ICROPHONE

2

3

4

-1

-1

-1

_~~

EXPANDER

EXPANDER

EXPANDER

DYNAMIC/

ELECTRET

....

....

I---"~

I---"~

IC---....~

MIC

__

--""

__

------+I

__

-.J

GAIN

~

HIGH/LOW

(ON

VERSION2ONLy)

BALANCE

INTERCOM

~

RS

T

GAIN

>---\-------11>

TRANSMIT

INTERCOM

SPEAKER

OUT

AUXIN

3-31

Block

Figure

Diagram

19

Versions 1

and

T

2

RECEIVER

1

---1

EXPANDER

I--"~

..

--------

AUX

OUT

RECEIVER

RECENER

RECEIVER

HEADSET

MICROPHONE

AUX

2

3

4

IN

---1

---1

---1

EXPANDER

EXPANDER

EXPANDER

DYNAMIC/

ELECTRET

I

~_------toI

I

I--"'~--"'/

AUX

GAIN

~

HIGH/LOW

BALANCE

INTERCOM

~

RS

GAIN

---------

TRANSMIT

INTERCOM

HEADSET

...~SPEAKER

OUT

Figure 20

Block Diagram Versions 3 thru 6

3-32

1')

o

o

o

Ul08 0 q

(aanaaaaaaal

R1840

sOOOQ181

o

OORl82

C148

C144 C145

0

C143 C142

c:::J

Cl48

o

SlO9

C1800"':

.0 a

T C173 0

o

1

SEE

FIGURE :(J

25

DETAIL

R197 0

A~V

FIGURE 25

DETAILB.............

R178

<>

~3)u

~

C188 0 0 C164

O

'Kg'

1£1~

SEE

:+0

0u

o

:

0+

o 0

0

0 n

C171

U112

Cl63

VAl01

101

*l)

10

0

£!:!J

....

RIse

..

U

C126

+=

~:

:! 0 0

()

~---~---l

C128 I L I

G

"'c::J

R;l.§Z.:;

R1S8

OCl30

~

I 0

I _

I I 1101

I 0

~33

L~~l

C1S9

0

+

OR194

;

Jl09

~

R1S2

c::J

R1S9

<>Rl54

U107:r

aoo

CiS

:

o!Q

<:>

R1711

<>

Rm

~

VI

J10S

am

"0

Cl40

o

·0

o 0

II~

a~o

o 0

o 0

1111:0

o 0

I

o 0

o 0
o 0

Sl04

o

o

~

J110

"'0

C149

C18

<:)

C1S8

~

C17~

0 0

o 0 : ...

r'Yt"

: 0

V 0 o

Cl77

0 0 0

o a

0

U113

O

C167

R203

R1180

Cll80

o

Jl04

~

+0

Co

...

C17S

0

R200

;

JIll

<:>

0000

...

SCJ

:;

a~W70

g Rl12

<:>

C181

R121

0+

o

o

C1l4

0

i-

OR124

<:>

~O

b

O~

C172

S111

0109

0

~

C150+

Ul11~

C1SS

Cl0S~OO

(\

~

R1060 V

R18S

R1060

:8

R119

CA101

R1S0

-c:>-

Q]

III

0

«

_0

~O

Eg

- o

'"

R12S

<>

"'O~Ul04

..

a;:

~O

bO~

C174

R1530 a

R151

lilCii-C:>-

:;;::;;:

oooa

00QU106

+0

Rl~63

...

~

C131

~

o

R162

<:>

~~R167

CllS

\.AJ

o

0000

L-.....J

aooo

R128 +

~

R129

sO~O

...

o 0 0

C178

~

""""""

0000

aooo

:0

C1520+

Qf{

Rl07 D

0

C18S/l0:3

Rl88Y

,.........e...,S102

L--J

li1aaaal

R192

~

Cl53

....

<:>

0 0 0 0 0

liDo 0 0

Rl99

O

Rl88

07 Rl04

r-)+

§

~ ~

'i:r'

0cJ"O~u

<>

H114

0102

C108

-c:>-

CD

(]

Ql03

Rl48 R147

Rl90

<:>
<:>

RIM

000
0 0

0 0

iC

°

Rl111

<:>

Cl540

Rl17

<:>

~

a
a

D

a

: OR222

Pl02

(jRl02

Jl01

Rl22

<>

C'l

0::

...

u

0

Cl11 0

P114

Ul0l

000

0 a

Cl20

~

~o:

0 0
0 0 R137

00

C101

Cl02

0(\

'"

~

Rl030

~O

OR10l

'"

flRlos

ov·",

6

C121

~

<:>

C1180

R1340

!:!o

'"

6

(]

~C~

OR136

OC+1l7

Cl03

Ul0S . ,

Q10SV

:JI:

o 0

o 0

O~O

o 0

o 0

o 0

o a

aU109

R17S

C1370 U D 0

Rl~

Rl~:

UllS

0

0:

<:>

R201

R2040

0 1

06

~.

-c:>-

~

FfrrS

::D~O(]

0000

D

:

D

Pl03

00

cm

Cl22+

R133

R20S

O

<:>

C178

L

101

g18iQl04

13

CISI

<D+~

i'"

R172

..

O:! 0

<>0

;;t

0 0
0

Ul10

0

a-

R17.

0

o!+

1~119

dJC123

O~

I

R141

-c:>-

R221

-c:>-

-c:>-

r'\R220

mrt

R219

-¢>

~o

~

~!:!

l.:!~

0 0

b

R216

C182

OR217

?r\

1L6-

R

~0109

i

1l0~

0

I

0108

~

C18300

U~118

~

~

-c:>-

0 0

: :

+ 0 0

0

C184

0'"

:

0

ll:

J112

R211

<:>

R212

<:>

o

o

o

o

o

S110

3-33

Board

Component

Layou

u Versions 1

Figure21

t (Component

and

2

S'd

I eA dio

)

o

o

Figure 22

Audio Board Component Layout (Foil Side)

Versions 1

and

2

3-34

C)

PORTABLE

3

SELECT

e175

tOUF

3

lR~~~

1OOK1'OOKl

5107

-R202T

""f Y

C176

lour

i

INTERCOM

IOV£RLOAD

INDICATOR

I

i

REMOTE

5111

Orf

*-

CONT

J113

RECEIVE

I--<

BOARD

--<

R'69

R170

'OK

~r68

68K

R162

2.2K

R161

R132

6SK

•

3DK

10K

U110:A

NE5532

R171

330

......

[5

R,'6: :

8

10K

I~R17J

• - 7

R163

10K

......

.- ,

Ul~:O

NE55J2

R174

330

~~110:B

NE55J2

TRANSMIT

AUDIO

~~

I.Y

,'I

U109:8 r

LM,;'92j·.,.,

R1~

4,OK

I

e150

·10UF

.~

C151 •

l~UF

LEVEL

R'BS

lOOK

T

•

R190

10K

r-

:

J

.gJ:~F

L _ _

AUX

OUT

R'BS

3,6K

D60;J

~:

-l

el03

.0022UF

NOTE:

COMPONENTS

IN

DASH
BORDER AREAS ARE LOCATED
THE DISPLAY BOARD.

:

-f.

I

L

~:

;.-0'

__

I

.J

Example

ON

S110

TAlK

~

lo--------l<I

LY-

0110

lN4148

r.-r

~~R-2~'2-----'8

11'OOK

.. C a

r-

~~~g:B

S

9

0

~

lN

__

__j-----1T~TI---v'VDKIr1'__j

R211

lOOK

.,r

Q 13

1')

D!,0~8

~01J

D

,

r-:l

S g

:~'~:::i

'

~

-:::"

It

...

~C

.. 7

H'~

R214

R216

470K

10K

='

JOOK

R213

.

c,'~iI

Dl09

lN4146

Q'f~'+--1~-+-"".I'--!I--~

:

C184-

R217

10K

3-35

R216

~

R219

l.OK

-

I
I

...

I
I

I - I

L"'::

R221

10K

Q110

MPS3704

D6091

~

TALK:

__

.J

R220

5.1K

0111

IdPSJ704

HEADSET

SPEAKER

...

C'3.

I

Figure 23

,urI

...

Schematic Diagram Audio Board

R'88

B.OK

C152 +

IUr

R189

•

68K

I~15jr

'7

t

Version 1

U"':A"

NE575

9!~~~OK

F

Jl09

~>-----------------\-----.

PORTABLE

t

Rl~5J7

1- 06051

l

~:

I I

>--------~-----+_-t_--'_lIlH

Jl0B~

ORTABLE

Jll1

>-----.>--------I+--------+--...i

: I

ORTABLE

>-------t_------I---~

Jll0~

ORTABLE

P114

HE'AO~.~'22

MIC

iN'

>-j!.

AUJ~~~

'-__J

Rl.B

lK C166 +

2+

j-

fb6b4]

II

P~2II~4002

I I

!_LJ

R201

1K

J

J C166 + Y +

1- 06031

I

~I

I I

I I

R2D4

lK

.+

:-

~~

I

~.

I

I I

'-__J

~LV

1~~811

R12J

C113_Jo

l.,-.;

.6K

C101

2.~~,

'"

~~~:

Cl;;'

Rl03

2.2UI'"

L

----4

Cll2

R101

B2K1Rl0'

82K

+51020t100PF

~-1-W-"-'M~'2K

3 ?

100PFI

..,..

RI05

2.2K

C103

.OO22Ur

II

:

tESS3

2.2K

~

~~;~

U115:A

Ul0J:A 3.9K 10K

N;~2

B R140 Rl41 I U103,B C122

_2J:".:::

~,C116

47PF R1J5 4

MlQ..GAltt

Cl17

IvRPQ~'

22UF:~

1~lQQ!S...J

~C'-\1i"lB'lI".0'"'U~r.VY'..,R137

R134

~

10K

~

0105

I

J177

~---'-0-~~rt,~7~lM---~-

101:A'':8">NE-'5,'-5-3..2

Rl07

100
Cl05

lUF .01UF

R1D6

10K

UlO',B , 7 7 7

~:;,

AUX

GAIN

I-VA"''''';:-..,

'1"lP'/¥"

1-'[001-1

~

.,.

C106 R109

~Ql0lI~~~~

Jl77

'o,V

..

jIH

3.•K

0~~:"702

C'6':

lU'I

u~~~~~

C160~OK

;~~'

3.•Kr

lU'I

U11J:A

NE575

C161¢;;OK

....

~~,..~I~

IH

Il

3.•K

lu'I

~~1;:;T

C162IT::E0K

'~,~'

IlH 3.•Kr

C170 +

lU'I

1

5BO

~\~~

4.7M

R13~

ll!I'

C121

47K
C108 +
10url

"",,1M

T

#,Cl0.

~UF

R;15

1UF

1N41'!9

47K

C120 + R1J9 R175

Rl06

3.9K

4.71.4

Rll~ll

1°

..0'OK

,:...J

I

~

~

V

~

T Y

10K

A~4S

L,

L-,"-J

~

~

- 2 0167

'i

0 r100PF

10K

~

V II'

5

10

J..

101<

A~l[)

L,

L-,"-J

~

T

.fJ~.:~

~~1~3

Q °

MPS~7~2

-j

__

~;3~:~

R113 , I

22K

I-;;y,{-

15K

~

MP~~~2

0110

R219

1.SK

R217

10K

I'

T I

i

I I

L"':

1,C'63

r

I.,

I I U112'8

i'

10QPF

I

~75.

1~JgJ'

I

1

I

"7

__

+-

I"

1..1

I

I..

'I

I"

1..1

I

R142

22K

_

U112:0 G173

on

/£575

I

rwV

,.

U113:8

NE575 C175 C176 R132

~~U'

~

0169

l00UF

U113:0

n~575

~

1M

~

~--~~~1A~U!:~:~LE!:~--~-R-,.-7

_I_.J~V'.\V'~2-I+<~iLl"-::--

PORTABLE

SELECT

0111

lOU'

S~

1,RJ;~

~~~f

PORTABLE

SELECT

•.,

l~UF

Sl~

lR7.~Rl

••

1OOKl'OOK

'i 'i

PORTABLE

SELECT

5107r'°I'U'_6'vBvK'-_4

IR200

R202

lOOK lOOK

T Y

PORTABLE

0177

SELECT

"1~::~~:.r'0u'

1OOK1'OOK

"'f

10K A _

4

010'

J177

0107

MPSJ702~

~

1

~1~6

)..;-\v-r

Rl'i:-----

3

.•

K 1 -

U,;~~2

+

=,">--'4

:,7~1~,~~~-HI---I--r--+-_------jf-_---J1

R117 R116

15K

~

MP~~~2.

R221

10K

R220

5.1K

Q111
MPSJ704

0.0.1

~

I

TAU<:

__

-I

1

0172

R130

10I'U'_'v6B'vK,-_~

2

0174

R131

lOUr

BBK

R170
10K

R168

6BK

rlL-Jvv'-----.l

R162

3

,---------------"IV'--I,-

+-1-

4

e178

R133

BBK

C1SB

R223

.01BUF

"f

+-1-+----\-------\---"--

R144 R'2B R125 ,

t--'W'---t

NE'::5>53...:2.4.i·,I.~uf·'_"VIr---J_.z._P"'_

/

C135

1'°1~F

T

nr-

~1~5:~.~~~3

~~Jg;5'2

R12.

~"'-

82K

+ R126

I

4

,,31/91/'K

C115"

100PF

~

I

~!~7

:~~

~I

---.5.J,,-";

~:8

1 -

-t-H

r---.

NE5532

B \

2'0

..

+.

.....

;;·2;,;..'

:

INTERCOM:

:

OUTPUT

~~~

~EVEL

__

fl238

~1

:

1K

'

R23.

!..

.~~.~!~~~g~~.~~~4

+

R151

R152

3K

;lANCE

il.

.....

~.~j~~\

Lj~_~'50K

':~~'

VR101

:~.~.

R155 R159

C125:

C127l='=~

1UF:

1DOPF

, • NE5532

9.1K

-j~__-'L.j,,//>-7L~

CAl01

R150

lK

~

(

\\

'-..:.:/

lK

R153 r

'OK

?

r::-

'j'+/1

~~f

'-1

"',2'-9-'0-0-P,'

r

+

" " r

II

R156 100PF
150K

+C128

1U

'

·

I

INTERCOM

v.-;O~

100~:

L

__

J

Ul06:A

$NE5532

~~~B

U107:A

C130

R17B

1M

R160 C1J1 0102

R169

10K

Ul10:A

?

"NESS32

-"

Q

10K

'

I~R173

o 10K

- 7

+

U110:B

NE55J2

~~~3

,"'1\,

'rdk3i

,_,,-+IB-N,.,(h,

.'1

~~-.\.\-~~11-T

0150

R171

330

!~

C151 7"

R174

330

lR~F

TRANSMIT

AUDIO

lEVEL

1--------------------_1_-1-1--<

U1'66:8
NE5532

R1,~

4,OK

I

R165

GAlN

10K

lUF lN4146

,

C132

C1JJ
lOU'

1UF

T101

!

Ip-~·o-

l~~~;Bt

r---'

100K

R187

47K

R16

J!~

It

r

1M

I +

'="

C185 I C154 I
10UFI10UF

"f

~1~8

IV'

S~4:2

-(r"

5'2"3[522"5

5~4:7

'

+

T _ "7

5104:9

I-(r"

....-........

--.-~~==~=~==~----------~.~m~1--:;~~~7---~-~7,~~:~~~'

lBOK

---

22K

~

P-G)'>U--',L05-:A-~

R14a

~

101<

.o;~~J

--

~-\

~~~~ ~~L1~

1

L_

+ U105:8

~

LM3.3

-!

LM39J

T

0607

0808

1 ..J:.

~

~

I

M~_

A~~i

OVERLOAD

~J~9

INDICATORS

R120

4.31<

R121~

10K

f

C114~

R124

10UFI13K

---:-1:~

T

Figure 24

Schematic Diagram Audio

Version 2

NE~53r-:

Is

rv-

+-

EXTERNAL

SPfAI<ER

VOLUME

HEADSET
SPEAKER
VOLUME

r---

-I

C136
1 \!R60J 1
I

lOOK

~+IF-~>:cU~7'

I I C137 - C13.1
L_ _ _

T

.1~F

_I

220PFI

R17B

1M

T+--'\i¥-----l

R180

22K

C13B

!!

lU'I

T

r-.

ot

Board

C141

J!

470UFI

T

VR103

-J+--"~OOK

C144

:$.

.1UF

A 1

~+-""""'"

_

l~

C;45T
100UQ

6~~glj~

220PF!

R179

'OOK

- 6

U106 R183 1 470UF '1

'T

LM2895T181<+C14B

1-----1f-"

R184

200 JJOPF Ul11

~C14B

10ur

1

T

__

_J

1/

C143

220U,

,lR162

l'W'

~~CJ4119

rl>-.-I!!-,

311

13;".J

J~

...-

J;C161

I

T

h ,

I

J!C156
I'70U'

~

'~i~~M

R181

51

~

3

?:~

1

01

47

C140 I

!

..

?UF

"

2~

I [phone]PF

~~:~~~9

IC155

C152 + T 4.7UF

1UF

:+

T

R190

r-

'OK

I
I

C191

1

.D01UF

L_

'}

~

--LI:

>-"--

V"1

R191

_

620

'1

T

S.!24:4

5~

1 C203

,,6

:

11~

S~~OO~

--'I

5104:1

'u

,

EXTERNAL
SPfAI<ER

+~J106

C142 I

Rl.3

lLII,,'°;e-_-<

Pl,.

1

5JrR"',".!'2--'--<

10

"

AUX

OUT

REMOTE

5111

orr

~

CONT

R1B5

3.61<

o;~

'"iINTERCOM

,..

1

OVERLOAD

_

-I

INDICATOR

•

U109:A

LM3.2

R187

6.8K

CC1

1,I

"ci\u,

='

,

~~~3

1,C157
I·001UF

--..

~""

+ C193

'U,

r

R,2

..'

"f "f

6

700

r"N'--.------___.--,

R206 8

16.2K

~

~_L..;l...LI::

't

R209

16.9K

HEADSET

SPfAI<ER

·"'1

Z~01~

1N4733

01O~¥'~1

TlPJO

;;.:rU;;-l1t'~--j'lt--!-----J

LM35B

1~'20.

R222

lK

r-

---I

I

DBOl

I ~ I

I

~~E~.1

J112

~

TRANSMIT

BOARD

J113

RECEIVE

BOARD

Cl04

I'

.1UF

~C180'~C179

R207 I .1UF r 2200UF

n

~

I

3-36

NOTE:

COMPONENTS

IN
BORDER AREAS ARE LOCATED ON
THE DISPLAY BOARD.

r-t-I

510.

---.....--.--,--<1'

I 1

I

I

L

Example

F101

'~N:~'

1~::'

lAm.

~~~641~~gg4

L-------.-1,C~,7B7,------J

_I

-I

__

.J

POWER

=Vcif~,

~

-+

r·01~

7

DASH

NOTE:
ASSEMBLY. C124 AND C125 WILL
AUDIO BOARD RATHER

VERSION 1DOES NOTHAVE

THAN

ON

THE

SWITCHBOARD

BE

LOCATED ON

THE

SWITCH BOARD.

THE

----.lI~-.=Joqa

'~.C_

~@o

'

It)

·@5

Riv.A

1

Details

of

Board

Figure 25

Differences Between Versions 1

3-37

and

2

QC117

oc::::Jo

0

DR222

0

R185

Q105"-../

0
0
0 0
0
0 0

0
0

U115

C144 C145

0
0

0
0

a

aad

o

R134D

o

C136

e

C141

e+

a
a

a

a

a

a

D
D
D

a

a

P103

Detail A

o

NOTE:
BOARD

THIS ON VERSION 3 AND 4

BOARD ONLY. VERSIONS 5
AND 6 WILL REFLECT WHAT

IS SHOWN

THIS AREA OF THE

WILL

ON

LOOK

FIGURE 27.

LIKE

U108(;)(;)

laaaa

o

R184~~~~l8

CD)

d)(;)

C148 C146

aaa

070'\0

0-1

aaaa

R181

1-0

R182

0

C142

NOTE:
BOARD

THIS ON VERSIONS 3, 4, AND

5 BOARD
WILL
SHOWN ON FIGURE 27.

THIS AREA OF THE

WILL

ONLY.

REFLECT

o

Detail B

Details

of

Board

Figure

Difference in Versions 3, 4, 5,

26

and

6

LOOK

VERSIONS 6

LIKE

WHAT

IS

3-38

[]

U117

2:i'Q..''''. .

R2ll9

R2Il8

c::::J

Dl117

01llS""""'"

'---J

1117

~&

gggg

'"

....

'"

~ ~ ~..~

a Q c a

<II

R:l112

0

E'

'"''

Cl800+

Pcg;

o

VRlllJ

C1Ii6

r.O

ii:

Cf03 U112

Jl00

Cl5!1

C1M

0

+0

~

+~

D~

C171

JlllS

+

~Q

Cl119

C157 Cl:l8

CJ.Z!

C162 u·

Pg;

!l

D

Jl111

Jlll4

o

O2113

5

+B

CrG7

113

D~

o

JIll

C2ll0+

Cl14

RllSO

..

A

5CJ

'-c!'1111 !!1!l Ill:

O

~,+

0....

Rl10

~

c=J

~

R2ll1

~

Sllll

0109~

~

LJSl02

sO

~O"~

II

Pl14

~

C1M+

Ull1~

L-J

O

~OOtll

C1M

C152

~)

Cl

85 =

0

of

'3.~'::

~1I0,-~.r

Rl19

c:::J

~Om

5 R1M I

~

c:::::J

18

-

0

Ill:

~D

;O~Ulll4

Rl~~53D

c:::J

!~

r--;!Ulll6

IlI:cL--..)

;n+

QI:lQ'~

Rl25

c:::JC~5

=

Rl82Qg~~

c:::J

+'~'87

Cl Cl

Rl28

c;;!...

'--'

R12l1

~

::Cl53

Ul11l

~

~II

~

+

0

D112

S~:!~

~;;:~I:l(

ClllS

IlIIl

c:::::J

I"

R117

\..

01llJ~0

D

CO'

07+

g~o::

~+'Cl1eeu

c:.F"

c::::I

R1211

1

~

~

U~

fRla;-

1 c::::I

O~

~0112

"0

~0113

::J

- ,

1

1 Ill:

VRl92 I -

~~

c=J

Rlee

~

Ill:

Cl:l:tr'\

I""'

1,-....

,

~

- - - - b;:8

c::::I

Rlll4..

D

1';

~

C191

Cl22

+VO

+

Rl38

nC::

~ll:l

0114 I

'alIa

0

(R)

c;Q;J

a

T°

RlllJD

£J

Cl

enD

~

t1

rf.!CllSII_

L.IlJI

_::J

..

FIGURE 26

c:8>

l)

0

+ + + + I

~D

o~

DIlI:~

Ill:

nI

~

&!

~

Q105

'-.-/

R111

01116

I)

RH3

(I

....

RHfi

~

Rl45 a 0212

:OC~3~18

Cll1

~

-

A.,r--;J:.lrI

Ul_~ii1.J

D:ll

;;:

_

0'+

Cl17

Cl38

~

Rlll4 R142 0

a+

D!lR:~

0 I Dl111B',BD108

r'llJ~::!

SEE C1M

DETAIL A I'>

u

l

~

0-

~

C0151

1'>0

~

I

I

R2111

~

I

R~~ll

I I) I

~

I....

Cl82

..

..

0

Ill:

I

0_

Cl5!l
OR171

....

~D

+

if'Cl8

Cl95

C]q;:J

O~D

c:::J

I'> I gg

D~ID

I

Ull11-

C:"1

D

~~:!

( 1

D!!t

,~

R141

I

c:::J

,

R221

e:p

co

~

0111 I

IDDR217

I

I

I

U~'18

~

1

+0'

R226

i

,

m

sl[]

Cl117

CJ

i,

Cl98

~

D~

Jl12

c:::J

o

~

R212

(J

3-39

~O

~D

bO~

Cln

SlllS

Figure 27

Audio

Version 6 with Detailed Areas Showing DifferencesofVersions

Board

Component

3,4,5,

Layout

and

6

~D~O

bO~+

C174

5106

(ComponentSide)

Q178

5107 5108

+OC178

O~

R21ll5
c:::J

".

Audio

Board

Figure 28

Component

Version6

Layout

(Foil Side)

NOTE: REFER TO FIGURES 26

AND 27 FOR DIFFERENCES IN
VERSIONS 3, 4, AND

3-40

5.

o

U112:A

NE575

C159~0J(

\--.>---R-,9-5-------------t----.,IH

•

JlOO: 1

PORTABLE

J'08

ORTABL£

JIll

ORTABL£

mo

ORTABLE4'f,-

IK

I

C;~9

I,

+1·our=I
I'

>

\--.

, : 1 I

I

-+-

2

>-----===--JI+--:;:::=-----+----"4H

9Rl~.1

-1~

3'

>--

~

-t"OUFl

P114

H~~~_~S'02o

~

r--+-jl'-,-.I'VV~2'2K

AUJ~~~

3

O+

5110

TAlK

l:;Jt1O

L,)---"-

'-

-,'06051

7

1

I:;I

I I

'-==:.:'

=-=_:...I--+

8

W

C200.1!

10UFT

-=IF

',-

061.4}

'I

~I~4002

1

.::..__'

-"IIh--r-...J
C20d!

+1-

D60Jl

I ,~,

IP3I

I I

I.::-:..::...::.:-::.J::.-I

Rl~4

1

C20~

08021

....,

I

r.?"

I

I

1'4

I

I . I

CI89

Ri22-UO'

~?UF

S800

R224

10K

r-

CIOI

2.2UF

...,

.....

C-,~0~1f'"2-4..,RI,..03IV-+R'05

.2U'·

'----~

I •

1

0------1'

Cll1

1.2UH

IUf

fJJt1'~3

"'f

2.2K1I47PF

C112

E

I'OOPF

,

"

Rm

~t04

RI02

-

2.2K

"OI:A~

82K

~2

OOK

\IE553 '..CI04

:::Z.2K

7

,~m:B

D S Q

c

~

0106

IN4~46

R211
lOOK

r«

R2'O

3.3K

--l-_--l-

U115:A

,

UI03:A

N~2,

~116

MICGAlN

I{ij\ib~'i

C117H:.:J;)'¢V-f-J
22UF

,

1_.LO!!t<..J

C118".01Uf. (

+-'~"t"'IF"'~WL~~"R137

R134 R 6

10K

:I;~4.,lI7W~tt~I~~-tG~=---j_-__jH=====:t::-------l---__l--.L--J

T ..

~~~~

U'O':8

~

'N~2

A~~~tF

IVRBmoI

R'07

I:",{~.J

100

C105 +

C108

lUF

.O!~F

RI06

A:::::\

10K

\..c!:%,01

,

....

- J177

~~"6:A'

C1~

•••

O!~F

R21;~1

1001(

R21ilK

CI;t¥

IUF

-+-

ioil;'

3.9Kr

MPS3702

0100

u~~~~~

CI60tt:3:

''-I'OIU~...jF

U113~FI

NE575'f

C161~OK

10UF

3.9K

U113:C

NE575

C16~

-j

~

'0!JUIHF~

3.9K

Rl35

S80 $"''' 0104

4.7M

RI38J.bCI21

47K

I1UF

C120 +

R~9

10urI

.....

1M

'f'

I

RI06

3.9K

R109

4.7M
Rll0

4.7M

1N4,1.30

Rl1~i

I:1;ClOO •

47K

::fUF

C108

+ R;15

10U~

1M

T ..

4013

1

0 S I

Q,I-l+--IIl1--l-'lAI'-I--~

•

rt

t 8

4 7

H~

R214

R218

470K

'OK

1

2

I"

10K

45

"T

• 1 J

'f

I

l£)'OK

I..

I.

I

CI65

,IOOUF

I..

1..

I I

A~;

L,

L

~

CI64 ,

IUF

I
'f 'f

10K

A~;

" , ' 1 ••

3.9K~;8

I'

C166

+

r--

3

1

10KI.'f

A~;

LG

1.1

~

1

•

II

~

~

~L~8.

I I

7 7

~

I

CI70 ,

IUF

I

'f

elM

T..100ur

10K

I..

LG

1..1

>.p.t.I!--~-.Il···lI;;::+':'

.mn,

l..·I'2

'1

18K

~

DIll

1N4148 MPSJ702 IVI

R235

0'06

. ..L

C210

I·o1UF

1M

I

"'f'

R113

18K

~

O'.~~.

(~02

MPS3702

J,

R236

r.JIJF

1M

T '

10K

.....-

~~!8

0110

MPS3704 MPS3704

~

R219

1.81<

I-~l

I

~

I

TAlK

: I

L":__-'

0110

IN4146

0100

IN4146

R2,7

--rC163

I

100PF

T

1 U"2:B

~U~F

IIV

U112:0

1

~NE575..

,.

r

,.--v

CI67

r'OOPF

U"3:B
NE575

~'irj

-

UI'3o

NE57~

PORTABLE

I

SELECT

C171

IRi94 RI96

'OOK

CI73
',OUF

~

IRI9:~i:R'99

OOK

CI75 CI76 RI32

10JU~F

200

'OOK

C177

';J:~F

lOOK

CI72 R'30

S105r'OI'-~~F__'liI.'V5K'--_,

'OOK

'f

'f

PORTABLE

2

SELECT

CI74

SI~

IOU,F

T~--'Ii'V'---j

lOOK

'i

"'f

PORTABLE

3

SELECT

SI07r'0

..

~F-J>IVI·5I'_K--j

r

R202

lOOK

T

7'

PORTABLE

4

SELECT

C178

S:2:r'OUJ±:~W'--4

lOOK

'f

'f

C213

,qrF

7A~4

RHO

RI41

~I03:B

~'M~'OK

J177 R,14,••6

~

R112
10K

~Z.E553~,

4

'f

,..

O'07~

"PS3702

AU)(

SELECT

R147

I80K

\2_

R116

10K

UI02:A

-::NE5532

'.

:

7

R117

15K

L-

,~\L~

R118

18K

~B~~9

R146

ri

10K

~M'

R220

5.'K

0111

I

I

RI31

1.5K

RI33

1.5K

RI28

10K

C'22

~LR~29

+.1ur

R145

16K

......

1 (

:-

I

I

•

lJo4393

-'

,

>U""'IL05-:A--l

•

lJo4393

..

.

rt

~-;o-;I

~

MIC

UI04:A

NE5532

R.I'9

3."

~I

AUX

..J

OVERLOAD

INDICATORS

~~:

C115

lOOPF

R,1J:

~

'OK

I

C114"g
lOOUFI

~

...

Schematic Diagram Audio

~I:!'o

68K

:J~~

r-

__

----------------l--~"ff:R

RI82

....--------------w'--+---+---II~I_

t-t-----------------/t---

+

R151

R,52

,.

RI2S

6.2K

"

"

•

~

NE5532

C2~~

~-------L.jN,-.!~2

lOOUFIlOOK

• T

'-..,--t-----

~~--:'~~~~':>-wJ

RI21

tulii2:iil

10K

f

N~~I'

~'24

-:-r>-z.-

13K

~

S112"

rCE

INTERCOM

R237

ISO

R2'"

r.<

R~

160 CI34

R229

R234

lOOK

'OOK

R230

~!!7

C207

8.6K

IUF

VRIOI

OUTPuT'

I.

2.5K

lEVEL

I.

CI24 RI55

J!.

,;::

:~?UF

'5OK

~{

CI2S

!Jll].=~

'UF lUU1't "

R231

20K

C206 +

lUFf:

R 5

39K

-

---------..,---C-,-

33

R-2
16K

'35~'OPF

~

N"

C206

;11.'iu;.F~_---_.....j~VRi!IOOK~'03

•

~~2

HOOSEr

SPEAKER
VOlUME

,-

- --IC136

VR803

,

'

lOOK

___

-

I

- "

Figure 29

Board

Version 3

~K

~A~'

t'!!..=~t

CAIO,

RISO

IK

~

( \\

IK

t,c,

~~

....----<\IV'---I

n~~~

~

L ;;.>-.L-.-H-'----' J,

~

~M2

I·!.~F

:

~137+

220PF

,,1~

RI58 CI33

180

-

>--4.JV\,I'--!Jh

4

R176

'M

,Ul07:8

.

'OUF

.!.~F

.:1;++1~~F

R228

47

L------------------+--..----ii-

41

470UF

C144

J

EXTERNALSPEAKER

VOLUME

RI76

1M...... •

'+/

IU

>

',;!

+'~~"""'"

Cl45::r
lOOU,..

, LM289S'

R'64

200 J30PF Ull1 '

~~~

CI391

~.

22_

~~

C212

IOPF

U110:A

RI71

•

.....NE5532

'330

CISO
10UF

;;m

AUX

;=,It=:

~~

1',,~RRilki?73i]

"".

""

• •

1--:1"":

-t"

•

330

v-1Jll0:B

•

NE~32

RI83

10K

\W&2

~~.~.L

.~6~.2~KI~'6~K~;:j~tE5535:2...Jl..~33~KI~S~6K~~N~E55~.-.:r.32~'~..:L1Ll-l'-<~

..

·U~"'It'K.O'8/:.8·

NE5532

CI32ltlJRI84

'UFI

TIOI

~I~

~

\lo

~1\

lOUF

TRANSMIT

AUDIO

LEVEL

~~

.00IUF

R223

R225

C'9~..LC197..L,

.o,5uFf~,58OP~,;Ff~J-rvf...:...-/i--...J

U109:B

1!I

1.M~92

+

RI65

lOOK

1M

cuis

+

'C154r'

lOUFI

'OUF.

7 •

R186

294

~4:9

~

S194:2 S124:4

S~4:~

~4'7

,~S/'.~~--:::...-JL-../'

f

':M

J!-..,--t------,..t:1;,C""'"8·,

t

~---lj-J

~C'46

+'OUF

RI81

5,

I--

• I

UI06'

'~1~F

3 •

RI63 I

18K

,CI46

t·

.!'

C147

CI40 Ir-l>>-.I!-. RI93 PI14

gUF

311

41

RI68

6.81<

CI52

,+4.7UF

IUF+

RI62

,UF

....-!'~MC34119

~

2~

I

TCI55

•

U118:A

(:

.+

+-

RI90

'OK

CI91

.00I,~FI-

~II

~:A

RI91

1.3K

_

S~4:S

14,6

~~OO~

.....

~/'.

S~4:6

-----'1::[

-----t----I~--I---"O""Di..:~c-t.¥

+

IUF

CI~;-01106

47~F

h'CI58
I

..J!+'47OUF

~.-l

I

luv.'°t-_-<

5Jr~-'lAI92"-t--<

10

+C!!53,00PF

~

OUT

".

R228 R227

I .

..L.~..L

CI96T'~~FT

.0015UF

,-

,

I

I

4

LM392

'

S~

I

"I1~203

CI49

22UF

S104:1

HAL

OOER
SPEAKER

+-

R,65

3.6K

..l"r·lil\OOIIUF

,

'~'NTE~~

I'~-':'I

I(

1

7

R206

16.2K

R209

16.9K,

+-

HOOSEr

SPEAKER

U118:8

-.;I'

IV

Cl.7

+.OOIUF

- -

.......

"1+~U114
'.

REMOTE

OFF

CONT

'::

.

3

.

I'r-..

Y

,n~30

lJo4358

,--

I

I

I

__

~11

0+

1

I

i

2

h

TRANSMIT

BOARD

J113

RECEIVE

BOARD

NOTE:
BORDER AREAS ARE LOCATED ON
THE DISPLAY BOARD.

U117

~~:T

~~

...

+

-----...---,

":l.+-¥--H

I

~

4

,007

i

Rt~2

I

~11

~.,

~I

~V~::J

R207

47

SI

....

09......,~,~-<

·

.'Ji

CI

80

+:

,IUF r 2200uF

COMPONENTS

I

r

I

1..

Example

003

0108

lN4OO4

I 4004

CI79

0104 0105

'IN4OO4

L';;.N_400-.,;4

IN

__

-f-"i

I

;.-or"1

__

,",!n

-

.J

J,CI68

OIUF

T·

POWER

JI07

+

...,..,...

..

..l

::h

CI67

+.OIUF

DASH

3-41

>-----------------l---:.;"IJ:--l,

J109

~

R~~~

+~M~=f

PORTABLE

1

+1_

0605

1

I

.1>:'

:

I I 3.3K

,

>---------+------+--+---

J108

~

R,W

"'"

,""-'-'

J'C2

PORTABLE

J111

PORTABLE

J110

PORTABLE

10UFT

2

>--

__

>-r

R"~'

I

C20'~

J+

10U~

_--::~_I==""

>

~

R,2~'

I

C20~

......

10UF'T

4 Y C170 +

C189

H~;r;':

4,7~

~IC

IN

R214
101<'"

~

""'fN.=fft.-

Jl0l

' Rl02

-...".

r

..!

8

I, I

"1-

ioog

1 U115:A

4

I

~I~'002

, p2 I

',I

----'===-I+_==-

I

'r

00031

:

f,:

I I

...:-:..:.J-/

,-

iiiio2j

I

~I

IW'I

I I I

Ri22--Ll01

Cl11

~:~;~~~

510 D

'00PF~'23

2.2K

C112 ., R135 +.1UF

ET100f'F

1--

_

Cl01

2'2U~~101

2.2K

~~~

:ri:

-l22U~~

C103

.~~2UF

,,-

Rld'4

2.2K

~;t~i

+

~'01:A~Cl04

~,~'ii'

Rl07

~

,-

~

MPS3702

R210

Ul03:A

~2

IVc1l6

C1l7I-i-v'IM.i-+--'

R1341--''-t''~gF=~W~'--,~~?~

10K

E55J

0109

'

+

__

-/

__

1.

2

~~:;-r-------hC~IJI9[-t-T~~~IJO~r~~1t<~'=~j:

'7PF

~'jp~,

LlD,2.K_'

C'lIl".OIUf.

~~~~

560

~~~

• U'OI:8

.....

N)N:~:L:;2-------+=:::1_-1~~'OK~+J-k_l

/olJX

d...."!r

Rl08

3.0K

L2~.J

U"2:A

NE575

C159¢:;OK

,<iii

3.

9K

'----+---r.,..-,-J

~L~4

U~~;~~

C160~OK

'OUF

...

·I::H

C16'¢::OK

',q?,~HF

C162~OK

--"OnU-i

1

~~;o

C120+R139

'OUF+:

I.

3.9K"

1L~6

UllJ:A r

NE575

4G

3.9K

C166 +

lUF

~~1~:g,

F

"~;

3.9K:=;::: I

'UF~

1~~\~

fC121

.....

1UF

R2~

1~

AG

::.J;

l[5

:I1

!J

'1

+ T

I,

Ib

10K

J,C163

1

17

Y

I U112:8

llil

I '

r-v---

I,

C165

..hiOOUF

100Pf

t;:--

I'

NE575.

PORTAI3LE

SELECT

C171

',OUF

=

IR'~~rR'96

lOOKl'OOK

S1..9i

t t

10K

<i...1-l{>rM,:;.-J1>,1

'>-.p.o..II

!.J

..-

I

+ T -:f

Ii

, 0

10K

I..

;:.J

I

~

L

~

V I -rP

,

II

~

-+

+

I

r

T

10K

I"

l[5

1..'

>.p.o...'-'_ll

I

.1UF

,

~~1t2

1 R

U112:0

..

'-I-.lLJ"

NE575

I

151+;;...

r--v-

C'67

l'

OOPF

..

U113:B

~E575

?Jg~F

~~~~~

•••

y"-=

.., 10UF SlOB

,.1';''''''

r-v---

~~n

IAP~%2

J,C210

+.01UF

1M

R112

~i~;~~:'-..-

R11~

PORTABLE

C'73

SELECT

10UF

SI~

~~:-

IR1~~1:RI99

lOOK

'OOK

PORTABLE

SELECT

C175 C176
10UF'

5107

lR~iO~~202r

100K1100K

T

PORTABLE

C177

SELECT

~2~~

tR205

lOOK

lOOK

-"-

~

0J

,0747

'

0107~'

MPS3702\2T"

AUX

SELECT

S1g~

~---

R:Y:--

10K
Ul02:A

.....

~NE55J2

";~1~~

Il117

15K

C212

1

C'72

R'30

10UF

4.7K

fi±----'vV'----.,

'i

2

C'74

R131

10UF

4.7K

ri±---AJ\JL--~

3

R132

10UF

4.7K

7'

4

C'78

10UF

~~;~

TfL--'V\!'---l

~~~~

'~r'

R104o4

10K

.-.!-~~N~'~0).;-:~~2+.~fl~~~-=-2_:x.y,__~_f~

: RI29

1/1'

-CI23

R145

14

.6.

18K

c7

,

10K

10K

R128

10K

U104:A
NE5532

n

C115

100PF

R~i:

1{{1

10K

R125

4.7K

""

~

NE5532

r-

.

S112:A

Im£RCOY

OllTPUT

R237

LEVEl.

J.~

...li..

R.~¥

~i

lK

R23

1110

R152

JK

r--'I/I

Rll10

'K

I'--f,-jo,

R1Gl

lK

CAl

~

('~.

'..:.:.:./

.'rl.VJl..-'60"-l',il,:

Rl

10K

,,1____

R!tO Ull0:A

101<

~ua

-t-_-'W

01

.....

'>r-t

)

INTERCOM

'.....".,1

R,'~~W1~~?~

R1M

160

'IIII'-"'jr

10Pt'

......

NEMJ2 3JO

g>.

R='1

r:

OK=7

~2~

!

••

"iR"'lk

L

o...~"",:

1/

~m!'2

R181
15K

.......

U1~:8

HFJl5J2

CIAlN

C133

~~,UF

ft171

CIllO
lOUF

-'-t-JW--'l3s

AUX

."

""

773J1

• 3JO

lOUF

UI09:B

3g

."

LM

r-.l..

_«/::c=-

R\~~

4

RIM

lOOK

~W

I:

'

t-

Rlg0

10K

,~~~FI-

"

".

r -

I

1 I

::

OUT

RI85

3.6K

Daoa

i

~

IltrrERCO~

OVERLOAD

,

INDICATOR

REMOTE

OFF

com

5111

._

J113

RECEIVE

BOARD

NOTE:

COMPONENTS

IN
BORDER AREAS ARE LOCATED ON
THE DISPLAY BOARD.

r-f-,

I

I

L

__

_I

-I

..J

Example

R118

IIlK

R147

1601<

-------

1-

I

L_

A

5101:8

R119

3.JK

- -

--I

~

D~71

~IC

~xJ

R228

47

~

t

~OlUF

POWER

Jl07

~----=.

Fl0l

r-------.j....lLT:'~~

C194

.lUF~

1MB

DASH

~'~U05F'

Cl08

Rl09

.OlUF

4.7~

J177

~',7'!!

• M

"r-",g~""-C-+'094-+.+-'

47K

C10l1

100,+

R2ll

lOOK

Rl08

~

10K

pI

=1*.,,~10CC1-~Rll1il'-~4

~~R~1

ION~\,~2.

','P

MPSJ702

:b-'--'-'--+---H---4-----j-~.Lfbf:>-.

lUF

R2Jll

,

R115

,1U

-r:~iJF

1~

T"

Ql02

~

~PSJ702.....

Q1OJ'

R,':

~~

Ul~:B

LMJ93

..........

'">-U.l-,O!l-:A--4

• I.IlJV;

~~g

I=~S

~120

4.JK

R121~

10K:

N~':'l.

C1l4:!!

R124

100l1Ft13K

~"">--L

~

Figure 30

Schematic Diagram Audio Board

Version 4

RIM

a.1lK

C102

• -+4.7Uf'

HR'+

TC151l

'M:

3-42

U1120A
NE575

C159~OK

RL~

U1Dl:8

NEM32

R109

58D

.

R1D8

3.9K

R137

4.7M

RI38:i

47K\1'UF

C120

lOUF~

Rll0

4.711

RI1~l

47K

C108...

100,+

iO~F

3,9K

'---1---,r;---,-'

uI12:~uFI

NE575

C180

"

3.9K

U1130A

NE575

C181~OK

lOUF

"I--~

3.9Kr.:.,-,

UI13:C

CI6~~

1~~Fi

•

.1

3'9K~

,,1-4

3.9K:::;~

1N4148

~C121

+ R,'39

,111

0112

lN4)1s

~Cl09

liUF

R115
111

,>-

'---R-"19-"5--;;;01~"'2;;-------+----:;.~H

Jl09,1lK

PORTABLE

>-

Jl08

'--

, : 1

PORTABLE2...

>-----==:=:.~=---++----l------'~

111

'--

: 1

ORTABLE

I1D

:---J:~~::Rl:2~:4::II:PS3~0:~~~::-+I-+-----4-----'1

PORTABLE

P114

HEADSET

MICIN

~

AUX~N

J1Dl

.J....ifo

fY

IIPS370 ;!J I

I

cj~!~

't"OUFT

l'

-ti ..

r

08051

I

~,

I PI 1

-='-:.:-::'

=_:::_:..I_++

R198

0~'3

lK

IIPS370

I

c'2~

+10UF'T

'1-0604'1

,~I

1

P2,

1

L"

Rl~'

IIPJ~Jt

.1

C201~

+~~

3 e168 + T + l00UF

r

oio3l

I

~,

'IP3'I

R210

B • !

3.3K

...A·"IV·AA-._t-t

\.!), IIPS3702

0109

+-----'~~nU'_4¢$OK

1

_1:--

I c202..h

4T10UFJ

C169

":.~UF

_~CI13..L

,10K

'---1Htl'-1~V'V-~2.2K

3 Rl02

•

4..L\-liLl~2".2I1Krl

~

Tr-

06021

I

~I

I

i1'4

I

I I

Rl'22

-LiOl

5600

1.2UH

5102DIODPFlii123

R224

EI

fJJ~F

,

-

Cl0l

2.2UF

~~

C102

R103

.2UF

200K

:;I.2K

.,

Cl11

lUF

" •

+2.2K

C103

.0022UF

~L04

.'

RIDS

R240

470

U1030A

N~":2.

I'

~?_:...,-------h;m;r-r-~--'V'II1~ln"'lOK'I'-&-:·Ji~.-:;-.N"E553:>--'~4:.~:I.!U;I.:.f-'\JII'-L--t--~

rv-;;C116

47PF Rl35 4 +.1Uf

~~

~~~~.

I-""~-l

CI1a.,.OIU£, 0107

.J.-!.!.

~~4

(~4.7M

01DS

~

,

JI77

~

•

1010A~-:

NE553

--';'-:;Cl04

•

AUX

JJrwr

!VR.~:l

Rl07

I~'i¥...l

100

~L~"

C106

~~

~:~

, J177

I!
II

ole

10K

,::J;

l{5

~

C164 + 7 +1

... ...

AG

4)'OK

~

>-~I-+.---"-

~~

C166

• ., .,

!UFI

-

I!

,

I'

10K

ol~4)

'-''-'

• 1 1

!UFI

10K

LtS

>.p.t.Il--~-.lI···4

!

C170 +

lUF+

~:

I

I

\.

I,...

I,

I

C185

OOUF

11."

I

, I

I,

II

I.

I

~

1..1

J,CI6J

'OOPF

I

~l1~g

~"""j

-

UI12:D

,.

~NE575

lOf+

L'"

;'"

r-v--

IfJJ'tF

T

UI13:B
NE575

~~~

- 200

U113D

NE57~

.,;.:::......

RI40

R141

.mn~;J

~'

D111

R236

1M

~1~2

15

Ql06

MPSJ702

.

1"C210
I·D1UF

.,

~m

AUX

~

R112
10K

~EM32

R113

18K

'~~R~1

Q1D2

IIPS3702

• J,

R238

~alJF

1M

....

,

PORTABLE

1

SELECT

fJJ~

5105

C172

~

R194 R198

lOOK lOOK

7 7

PORTABLE

C173

SELECT

10UF

5106

IRI9~i:RI99

lOOK

lOOK

PORTABlE

SElECT

C175

lOUJ~F

5107

R202

lOOK

lOOK

"'f

P~~.:'g:4

C177 C176

l;J:~F

::r'0Uf';~f.j4.f.j7K'-_~

lOOK

lOOK

RI30

1~,,,U~,F-,,4,,,.7/,-K_~

r'"

2
C174

R131

10UF

4.7K

rl.t-·-'IoIV'--~

3

C176

R132

10~F

4.7K

rl.t--'VII'----4

"'f

RI33

.--__. ---I\N-_+_-+_-j-=-jH.

HI-I------------l--------r---.------,

R152

3K

t

~~~

~;44

lDK
Ul03:B

C122

.Jl..~"J/

MPS3702

SElECf

R~;:--

10K

Ul020A

,,-~~23iir29

'RI45

,1:

18K

~

W

R147

l80K

-

i~l~~

R118

R117

18K

15K

~

k~,03

~702

~B

~

--.......

~U1DSoA

RI48

:

..&

10K

R128

10K

U104:A

~2

10K

r

;;"-;;-~I

I

~

I

IIIC

'_

- -

R149

7'

10K

u.t393

.

LMJ9J

R119

3.3K

~

I

AUX

I

--I

O'IERUWl

INDICATORS

~120

4.3K

C115
l00PF

R,l~

~

10K

R125

4.7K

"

"

~

NE5532

51120A

INTERCOII

OUlPUT'/

R237

lEVEL

150

'"

.

+

....

RJ1K'

R23

180

..lI..

:.{

E

r

VR1Dl

2.5K
C124 RI55

:~?UF

1501<

C\'25 CI27·_

lUF

lOOP,

RI50

lK

R151

lK

RI5~"

8.2K

n

R182

3.9K

CAl01

~

('"

VI·

~~2

•

R159:1"128

1l5OK

~~2

-

•

•

0212

1!fF

Rffo
10K

U1100A

• ",NEM32

~Ms~

I

R.l.?~+

10K

R173

•

101<

._

+ 330

~

.~

UI1D:B

NE5532

RI6J

10K

~

r'\/II'--HW;'CI29

R161

UK

~

~-

::;;UF

RI153

.160

•
'---.

.,'i;,D+6

••

B~.L..A~C~19~~Jrc~C~19~?ff~-~:=.j:-::>-~J.~v.-,J~~~~~:i-rY/~f.N:>_.z...,J--~-I=~

U

NE5532

Ul09:B

lUF

C132,g~lJ:R184

Dl::~I

lN4148

CI33

~~UF

or

C185 +

lOUF~

"

8228

47

R171

330

R174

TRANSMIT

AUDIO

001UF

R223

8.2K

D15UF

•

~92

R187

47K

lEVEL

R225

5&OPF

'

.....

C1541

10UF

U1160A
NE5532

16K

3

,....

+ + .0015UF

RI90

+

••

10K

C191

.001,~F

RIBS

lOOK

1M

~"

r

,

I

1

--

AUX

OUT

R228

33K

C198

RIBS

3.8K

08061'

...,

"'"

--!

R227

58K

C19

..0

DP,+

I,NTERCOM

I

O'IERLOAIl

INDICATOR

UI18:B

N~

-

REMD!E

Orr

CONT

••

...-

5111

,

I

I'

J112

--<

~

TRANSMIT

80AAD

J113

RECEIVE

BOARD

~

I:'

11

t

II

NOTE:

COMPONENTS
BORDER AREAS ARE LOCATED ON
THE DISPLAY BOARD.

,

:

-r.---:

I

L.

__

--I

.J

Example

IN

DASH

3-43

0110

lN4148

0109

lN4148

R217

10K

~.18

~

R219

1.!<_

I

1

·1

L

~

~M'

)~"D

IIPS3704

~-:

TAU<

,

"'"'

__J

R22D

5.1K

0111
UPS3704

Schematic

RI21~'02:B

10K

NEM32

R124

.1>.

~~

IV

31

Audio

C114:!!

lDOUF+ 13K

Figure

Diagram

Version 5

Board

HEADSET

SPfAKER

VOlUIIE

,--

-T~W

'I

~·$4t!·

..

:.::·~±_=~::::J·r)~;-~;-~2-:......J

1

1

__

J~~+

RI80

221<

CI38 •

lUF+

CI48

~~8'"~,UI19:B

';;:--;

i~

r

our

~~

RIllS

8.8K
C152

lUF+

TCI55

.....

~

4.7UF

~

H£AIlSEI'

SP£"AI<ER

n.

U112:A
NE575

C159~OK...

J,09

r-,>--::Rl:-:~:-5-M-PS3---;;~;-;I;;;;~2--------I-----':.l+

*rJe~~~~~~~

PORTABLE

1

~

_

00051

1~I Ql09

1 PI I

1 ,

I J

Jl06>-

r-,-R-,1-K96-M=PS3=-=:~=6Y7\C:3=--H----if-------...ijHi..l

I~~~

T

ORTABLE

2

>-

JIll

>---j

R201

I

C~:I..hMPS3704

"IT

DRTABLE

J

,>-

>---j-:-:R::20:-:4-':'=":Q:-:l::;~5';:--+,.-J+----I------'l"1H

JllO

I

C202,/;

:t"

DATABLE

4 Y

C160

H~;-r;':

4.7UF

MIC

IN

~

AU

'N

r,-+-j~4''::lVH~.2K

X

l

10

J

~

Ff

'

+,-

06041

1 ~ I

:

P2,

1__;

__

I

-=-7:=:c'-_HI-

Ql1~

lou1

'1-

D603t

1

~l

, I

I

I

__

J

lK

MPS370

10UFf

_

~n

1

1

~I

1

~

I

1 1

R)n--crol

5~6~OO

51020l00PFlR123

~~~4

Et'OOPF

~

Cl01

2,2UF

.u

~~~~

Cl11

'~:~:~~

C112

y2,2K

.0022UF

~.\8~

lif0'4

R102

- +

2.2K

+ 101:A

:~;

;.~~5

/?

!-'N--g\!),

+-

~~tO

~--------r----+

Ul03:A

~~~r?CI16

~C

1l47PF

C117H!f-V1\M,pI~£.;):'jl,'ltI1Ir-1N+--J

-l22U~~

,..:LOO_iLI

I-!C'1'~'6~~.0!lI'9U·W'"-.RI37

R134 i

10K

~~~~

CI03

II

'NE553

Rl07

100

Rl0B

10K

U116:8

C105 +

>-'-.----------l--~-+__'\N__I-l-ll'_r_"

- Cl04

AU~

';1"1!PF

lViiOO2O>'

'_':f:.ol>l...!

Cl06

lUF

l---+-.0~1!~IUI_F---'4J.7JM~

~

'!=?QIOI

+ J177

~4(

tR~·4013!~

~:

JJ

I

1

l>-----__¥'

~

:

'~..

0108

lN4248

R21ilK

R211

'OOK

:ir~'F!

-lOOK

C18'tf

lUF",

10~F

rH

3.9K8~

MPS3702

R135

~\te:

Ul01:B

NE~532

Rl06

3.0K

Rl09

(F:

~S~8

U112:C

NE575

~~

10UF~

3.9Kf

U113:A

NE575

C16l~0K

~It.j0U~F...,

3.9K""

~~~~;

"",,---=,.-,

C162~OK

10UF

3.0K

560

....

71.4

R13:i

"gC121

47K

11UF

0120 +

R;39

10UFl

"i"

1M

..-

Rll0

l4.7M

Rl1:J

47K

Cl08

+ '#

10U,+

8

.r

lN4ija

~Cl09

11

R115

,,/1.1

:I--'-+.---t'!-+"IY'-t--,.-,

4 7

:-t~

R214

R218

470K

10K

Ii

I'

10K

~

I

r..::::.

V

'1

~L~4

+ T

I I

7 7

10K

l[5

I

C166

+

lUF

I

Ii

...

I'

&

10K

~

[I'----

V 1

'-'~1I''------'I~~~~~~~

1L'}8i

T T

...

10K

"~;

lt5

Kr.~

'-'r'

I

1L~OI+

...

Cl10

.IUF +

~1

0111 Ql06 Ql07

lN4148

I.IPS3702 MPS3702

'±C21O

R235

t,OlUF

1M

"'f

~~~;=;

R113

16K

~

~K

0112 ( Ql02

MPS3702

•

,1

UF

R236

T?8/JF

1M

y"

0110

lN4148

0'09

lN4148

R:!;6

~

R219

l.BK

R217

10K

r

,,

1

1

L

±C163

I 100PF

I.,

T

1 U'12:B

i'

~S.2h~I'U~F--'lJ4.,,7K,-_-,

I'

C165

~

lOOUF

I"

I"

U112:0 C173

"..-NE575"

~IR~~~~199r~

C167

I l00PF

I.

...

UI13,B

I.

::E575

~

PORTABLE

1

SELECT

C171

100Kl

10UF

100K.,I,'OOK

C175 C176

1~~F

C172

R130

'00K

l

T T

PORTABLE

2

SELECT

C174

10UF

3

R131

4.7K

R132

..

51~

T T

PORTABLE

SELECT

51~r'0~UF-J41!'.70K--

...

~

C169

lOOUF

+

I....

U113'O

I.

[ N 575 CI77

, I ,

...

I

E

~"

~Rl1JO~

~1~21+lQ_Jl_~_i

r

R112

10K

r-

~~1

Qll0
MPS3704

ii6091

~I

TALK

I

1

__

...J

".+'

PORTABLE

4

SELECT

C176

10UF

5106

IR;~~-tR205rl'---'VV'---+

lOOK lOOK

'1~'

--'-

~.

AUX

SELECT

~

\.2-

R116

10K

Ul02:A

"NE5532

4f=

R117

'5K

~.

MPSJ702

R220

5.1K

Qlll

MPS3704

R133

10UF

4.7K

•

9~~~

l~rF

~~44

10K

~+10N

...

'~.~;:~2

.~~~2

~

C123

+

.1UF

~-:';:'M~1t5

'1~6

A\'

~

R147

160K

.-

--

-

;~1~~

R118

16K

~~6~0

+ U105:8

.

"-

-'--

FiUl05:A

R146

10K

R126

'OK

Ul04:A

NE5532

R!29

10K

4f

~o~:~

--

--

1--

O~

1

~

I

MIC

1-

--

It.4393

4 LM393

R119

3.3K

---,

06071

1

~

AUX

I

_J

OVERLOAD
INDICATORS

11120

4.3K

C114:!!
l00UFt13K

~

10K

C115
l00PF

R~O~

Figure

Schematic

Diagram

r-

R125

4.7K

' " '

~~

NES532

R121~

10K f

R124

J.~O

R.~~8

R229 R234
lOOK lOOK

NE~~III

--:-i:>-z.-

IV

r-

32

Audio

R162

3.9K

CAl01

R150

lK

~

(

R151

+.,UF

I

lK

+C128

C138

l·

C137·

lUF

R156

lOOK

RlllO

CI38

~~2

22K

1UF:+:

\\

~M'~

R176

1M

SPEAKER'

VOLUME

R178

1M

~

+.....

~;;

~~

~

t

R152

3K

5112:A

INTERCOM

OUTPUT

R237 lEVEL

..li..,

;O{

lK

R23

160

C1301

C209

lUf

+

27PF~

R231

20K

C206 +

51~B

R 5

39K

R233

16K

C'35

."

~

C~~7

ri:::U>-I..J19-:A~.tJ

1

UF

1UF+

lOP!'

IJ~~

"f--o----EXTER--NAl--l-.:;

•

NE5532

HE:AOSEl'

SP£AJ<ER

VOLUIoI£

1---,

VRl103

I

1001<

,
'----'220P!'t

Board

-l-_-IU~::::'lJ1(~¢";R"I~73i1

R158 C1JJ

160

~

+5--

U119:B

N~2

CI391
220Pt

C212

lOP!'

Rlh9

10K

Ull0:A

R171

"NE.5532 330

Cl50
10UF

~·:>-'4--¥.f'o--'jffiJl03

. a

10K

R174

C151

,330

10UF

TRANSMIT

AUDIO

LEVEL

.8Jf8F

R190

10K

RI65
lOOK

~Wl

t

~ ~

~~64

C18~~+C154T

10UFtlOUF+-

R166

294

~4:9

{V'

Cl0l

.001UF_ _-'INOIQATOR

"-

--U:~:A

'"

1+

R191

...

1.3K

II

,+C205

'OOUF

22UF

RI63

10K

..

~

~1~2

=

Y

1~~~:'

l

C

'81

t

R226

47

CI41-J!­470UFT

'"

C144 Ul08

1UFIt.4363

-ll'--nLf:N.:

l----_-ll-..J

R184

200 330PF

t

Cl48

10UF

;;'1~7

C140 rl>-.-I!-.

4.7UF

II

~C1Bl

t

lUF

EXTERNAl
SPEAKER

~R182

C1~108

1

47~F

+

+

C14tJ

I.cuse

1

llUF

T~7OUF

'"

Ulll

~~4110

3 I

~

4

~

R193

d [ Il...o\l,,0r-_-<

5Jr-'~VI!191'-2"---<

2m~:

Version 6

AUX

OUT

RI65

J,6K

._

r 060;;1

/.

I

I ;-",

LM392

R206

16.2K

Pl14

HEADSET
SPEAKER

REMmE

SIll

OFF

..-

com

IINTERCOM

OVERLOAD

C194

.t

.1UF~

T

Ql~~)+-

T1P~

't'"

~U114

R209

~

lUK

0107 lN4004 lN4004

I'

It.4358

1N4004

+

R222

IK

3-44

J113

RECEIVE

BOARD

NOTE:

COMPONENTS

IN

DASH
BORDER AREAS ARE LOCATED ON
THE DISPLAY BOARD.

I

I

r-f.-

I

L

Example

U117

78~05

,2

R;~7

T.

..

~09

lUFT22DOUF

~F-~C..~I~---.1-t-7.Cl=79-<

1~~'034

'+'

0104 D1o:l

_I

-I

__

10~4

.J

l~l~+~JreF

'"

J:C1ft7

+.01UF

~

PCB Audio Assembly,(878520) Versions 1 thru 6

(j

o

Ref

No.

IPCB100nOO

AU

Ref

No.

C101, C102
CI03
CI04
CI05

C106
C107
C108

C109

ClIO
Cll1

C112, C113
C114
C115
C116
C117
C118

C119
C120
Cl21

Printed CircuitBoard, Audio

capacitorsinmicrofarads

Electrolytic, 2.2

Poly film, .0022
Ceramic, 100

Electrolytic, 1

Ceramic, .01
Electrolytic,

Electrolytic, 10

Electrolytic, 1
Electrolytic,
Electrolytic, 1

Ceramic, 100

Electrolytic,
Ceramic, 100

Ceramic, 47 pF

Electrolytic, 22

Ceramic, .01

Electrolytic,
Electrolytic, 10
Electrolytic, 1

C122, C123 Electrolytic,
C124
CI25, C126
C127
C128

1

C129

,2

3

C129

-6

1

Cl30

,2

6

3

-

Cl30

Cl31lC132
Cl33

,2

6

3

C133

-

C134 .

1

Cl35

,2

6

3

C135

-

C136
Cl37
C138
Cl39
C140

C142

C141

l

C143

-5

6

C143
CI44

5

1

C145

-

6

Cl45

5

1

C146

-

6

Cl46
C147
C148
Cl49

C15L

C150,
CL52
C153
C154
C155
C156

Cl58

C157,

Electrolytic, .47
Electrolytic, 1

Ceramic, 100
Electrolytic,
Ceramic, 100 pF

Ceramic, 1000 pF

Ceramic, 100
Ceramic, 27 pF

Electrolytic, 1

Electrolytic, 10
Electrolytic, 22·

Electrolytic,

Ceramic, .01

Ceramic,10pF

Ceramic,

Ceramic, 220 pF

Electrolytic, 1

Ceramic, 220

Electrolytic, 4.7

Electrolytic, 470

Electrolytic, 220

Ceramic,

Electrolytic, 100

Electrolytic,

Ceramic,

Ceramic, 330 pF,

Electrolytic, 10

Electrolytic, 22,63WV

Electrolytic,

ELectrolytic, 1

Ceramic, 100 pF

Electrolytic,

Electrolytic, 4.7

Electrolytic, 470

Ceramic, .001

Description

Capacitors

Description

pF

.1

.1

pF

100

pF

.1

.1

pF

.1

pF

.1

.1

pF

(Not Used)

.1

(Not Used)

.1

.1

10

10

unless noted.

Part

No.

70723000

Part

No.

51821107

52719053
35693019
51821106

52676107

51821065
52723008

51821106

51821065
51821106

35693019

52723004
35693019

35693015
52723009
52676107

51821065

527~008

51821106
51821065
51821105
51821106

35693019
51821065
35693019
35693030
35693019
35693012

51821106
52723008
52723009

51821065
52676107
35693007

52676113
35693023

51821106

35693023

51821109

51821071

51821525

52676113

51821524

51821065

52676113

35693024

52723008

51821538

52723008

51821106

35693019

52723008

51821109

51821071

52676101

Ref

No.

C159cCl62
C163
C164
C165
C166
C167
C168
C169
C170
Cl71-C178
C179
C180
C181, C182
C183
C184
C185

C187

C186

1

C188

,2

3

6

C188

-

1

C189

,2

3

6

C189

-

C190
Cl91
C192

1

C193

,2

3

6

C193

-

Cl94
CI95-C213
C195%

3

6

C196

-

3-6

C197

3-6

C198
CI99-C202

2-6

C203

3-6

C204

3-6

C205
C206-C209
C210, C211
C212,

C2l3

CA10l
D101, D102
D103-Dl07

DI08_DlI0
DI08_D112

UlOI-Ul04
U105

U107

U106

1

Ul08

-5

6

U108
UlO9
U110
Ulll
U112, U113
U114

1-4

U1l5

5

U1l5

,6

U1l6
U117

U118, U119
U118, U119

Description

Electrolytic, 10 52723008
Ceramic, 100 pF 35693019
Electrolytic, 1.0 52723025
Electrolytic, 100
Electrolytic, 1.0
Ceramic, 100

pF
Electrolytic, 1.0
Electrolytic, 100
Electrolytic, 1.0
Electrolytic, 10
Electrolytic, 2200, 35WV
Electrolytic,

.1
Electrolytic, 1
Ceramic,

.01
Electrolytic, 1
Electrolytic, 10
Ceramic,

.01
Poly Film, .018

(Not Used)
(Not Used)

Electrolytic, 4.7

(Not Used)

Ceramic, .001

(Not Used)

Ceramic,

.1

(Not Used)

1

,2

Ceramic,

.1

(Not Used)
Poly film, .015
Poly film, .0015
Ceramic, 560
Ceramic, 820 pF

3

6

Electrolytic, 10

-

pF

Electrolytic, 100, 50v
Electrolytic, 100
Electrolytic, 100, 50v

3-6

Electrolytic, 1.0

3-6

Ceramic, .01

3-6

Ceramic, 10

Diode, Photoelectric,

Diodes

pF

andLEDs

VTL5Cl
Diode, IN4148
Diode, IN4004

1

,2

Diode, IN4148

3

6

-

Diode, 1N4148

Intergrated

Circuits

ICNE5532AN

ICLM393

ICNE5532AN
ICLM2895P

LM383
ICLM392
ICNE5532AN
IC MC34119P
It

NE575N
ICLM358
IC

CMOS 4002

(Not Used)
IC CMOS 4013B
IC78L05

1

,2

6

3

-

(Not Used)
ICNE5532AN

Part

No.

52723004
52723025
35693019
52723025
52723004
52723025
52723008
51821232
51821065
51821106
52676107
51821106
52723008
52676107
52719183

51821109

52676101

52676113

52676113

52719008
52719052
35693027
35693029
52723008
51821115
51821524
51821115
52723025
52676107
35693007

58693001
52228000

85759002
52228000
52228000

53295001
53284000
53295001
760381

59521000
53295001
760374-1
53277003
53227004
53266003

53266095
54680005

53295001

3-45

PCB Audio Assembly (878520) Versions 1

thru

6 Continued

Ref

No.

1101
1102
1103
1104 Connector,3 Pin, XLR Female 59893001
1105 Connector, 3 Pin, XLR Male 59892001
1106
1107 Jack, power, 2.1
1108-1113
P102, P103 Header,
P114

LlOl

Q101 Transistor, 1177 54687003
Q102, Q103 Transistor, MPS-3702 54713000
Q104, Q105
Q106, Q107 Transistor, MPS-3702
Q108
Q109
Q110,

Qll1
Ql12-Ql15'-4
Ql12-Ql15

FlOl

FC101, FC102 Fuse Holder 710082

R101'-3
RlO14-

R102 2.2K

RI03'-3
R1034­R104, R105
R106 3.9K

R107

R108 10K
R109,
RIll
R112

RI13'·2

R

113

R114 47K

R115

RI16'·2

R1163.

R117 15K

RI18'·2

R1183-

R119 3.3K

R120 4.3K 52154045

R121 10K 52154036

R122 5.6K

R123 2.2K

R124 13K

R125'

R125

R125

R

125

5.6

All resistors in ohms, 1/8

6

6

RllO

3-6

6

6

2

3
4-6

Description

Connectors

Connector, 3 Pin, XLR Female 59893001

(Not Used)

Connector, 3 Pin, XLR Male 59892001

Jack, speaker, 1/4" phone [phone]

Socket, 3 pin 640064

Header, 5 pin 52263005

Coils

Inductor, 1.2

Transistors

Transistor, 1177 54687003

Transistor, TIP-30 760384
Transistor, MPS-3702 54713000
Transistor, MPS-3704 54712000

(Not Used)

Transistor,2N4124 35573000

Miscellaneous

Fuse

Resistors

82K
200K

82K 52154014
200K 52154005

2.2K

100 52154084

4.7M 52154972
15K 52154032

10K 52154036

22K

18K

1M

3.9K
10K 52154036

22K

18K

10K

39K

6.2K

4.7K

mm

11

pin 670061

and

Chokes

mh

watt,5%unless noted.

& Potentiometers

Part

No.

59697001

35689000

54713000

710081

52154014
52154005
52154052

52154052
52154046

52154036

52154028
52154030
52154020
52154988

52154046

52154032

52154028
52154030
52154048

52154042
52154052
52154033

52154036
52154022
52154041
52154044

Ref

No. Description

R126 10K 52154036

2

R1271.

6

R1273­R128 10K 52154036

12

R129

6

R1293­R130-133
R130-133

R130_1334-6
R134 10K

R135 560 52154066
R136, R137
R138 47K 52154020
R139, R140
R141 10K 52154036
R1421,2

6

R1423­R143

RI441,2

3-6

RI44

2

R1451.

6

R1453­R146
R147
R148, R149

R150, R151
R152
R153 10K

2

R1541•

3

R154

6

R1544­R155-R157

R158'

6

R1582­R159
R160 10K

RI61'·2

6

R1613­R162'

3

R1622.

6

R1624­R163 10K
R164
R165
R166 470K 52154996
R167 47K

R168'-3

4-6

R

168

R169 10K
R170'-2

3

R170

4

6

R170

•

RI71 330

RI72,173

R174 330 52154072
R175'·2

6

R1753­R176

Rln'·2

3•6

Rln

R178
R179
R180 22K 52154028

RI81'-5

6

R181

82K

10K 52154036

82K

10K 52154036

'.2

68K 52154016

3

UK

4.7K 52154044

4.7M

1M 52154988

22K 52154028

18K 52154030
15K 52154032

3.9K
10K

22K

18K
15K 52154032
180K 52154006
10K 52154036
lK

3K

12K 52154034

5.6K 52154042

8.2K 52154038
150K,

1%

330

160
150K,I%

30K

15K 52154032

2.2K

9.1K

3.9K

1M
lOOK

68K

15K

10K
68K
10K 52154036

10K

47K 52154020
39K

1M

47K

6.8K

1M
lOOK

51

(Not Used)

Part

No.

52154014

52154014

52154036

52154972

52154046
52154036
52154028
52154030

52154060
52154049
52154036

54046150
52154072
52154079
54046150
52154036
52154025

52154052
52154037
52154046
52154036
52154988
52154012

52154020
52154016
52154032
52154036
52154036
52154016

52154072
52154036

52154022
52154988
52154020
52154040
52154988
52154012

52154091

3-46

PCB Audio Assembly (878520) Versions 1

thru

6 Continued

o

All resistors in ohms, 1/8

Resistors

Ref

No. Description

R182

1-5

R183

6

R183

& Potentiometers Continued

1,1/4

18K 52154030

watt,

watt

(Not Used)

5% unless noted.

Part

52154909

No.

R184 200 52154077
R185 3.6K 52154047
R186

1

,2

R187

3-6

R187
R188
R189

R190 10K

1

R191

,2

6

3

R191

-

R192, R193
R194
R195
R196, R197
R198
R199, R200
R201
R202, R203
R204
R205

1•2

R206

3-6

R206
R207
R208
R209
R210
R211,R212
R213 10K
R214
R215
R216, R217 10K
R218 22K
R219
R220 5.1K
R221 10K
R222

R223-R236
R223
R224
R225
R226
R227
R228
R229 R230
R231
R232
R233
R234
R235, R236
R237-R239
R2372­R238
R239
R240
R240

3-6
3
3-6
3-6
3-6
3

3

3
3-6
3-6

2-6
2-6

1

5•6

1

,2

6

-

6

­3-6

6

-

6

-

6

3

-

1

6

4

-

VRlOl
VR102
VR103

%,

294, 1

1/4 watt 54042294

6.8K 52154040
(Not Used)

6.8K 52154040

68K 52154016

52154036

620 52154065

I.3K 52154057
10 52154108
lOOK
lK

lOOK

lK
lOOK
lK
lOOK
lK

lOOK

470

52154012
52154060
52154012

52154060

52154012
52154060
52154012

52154060
52154012

52154068

(Not Used)

47

16.2K,I%

16.9K,

1%

3.3K
lOOK

52154092
54045162
54045169
52154048
52154012

52154036

470K 52154996

lOOK

52154012
52154036
52154028

1.8K

52154054
52154043
52154036

lK

52154060

(Not Used)

6.2K
10K

16K

33K
56K
47

lOOK
20K
10K
16K
lOOK
1M

52154041

52154036

52154031
52154024
52154018

52154092

52154012

52154020

52154036

52154031
52154012

52154988

(Not Used)
150
lK

180

52154080
52154060
52154078

(Not Used)

470

2.5K,

variable
10K, variable
lOOK,

speakerpotentiometer

52154068
57148067
57148069
57148013

Ref

No.

Description

Part

Switches

SIOI
S102 Switch, 2 position, slide
S103
S104

Switch, push button

Switch, push button
Switch, Dip, 9 position

57604001
700127
57604001
700128-1

S105-S109 Switch, push button 57604001

SilO

S111

Switch, momentary push button 57604002
Switch, 3 position, slide

700126

S112 Switch, DPDT 700091

Transformers

TIOI Transformer 730094

1,2,3,4,5,6 _Indicates the Version number

in

which that part is used.

No.

3-47

DISPLAY BOARD

Display

Board

Figure 33

Component Layout (Foil Side)

PCB Display (878519)

Ref

No.

J601 Cable Assembly
J602 Cable Assembly

VR601 Pilier
VR602
VR603
VR604 PiberPotentiometer,

PCB600
LED601
LED602 LED, Green
LED603 LED, Green
LED604
LED605
LED606
LED607
LED608 LED, Red
LED609 LED, Green

Description

Sprocket

Potentiometel~

PiberPotentiometer,
Volumne Potentiometer 723087

PCB, Display
LED,Red

LED, Green 58714000
LED, Green
LED, Yellow
LED, Yellow

lOOK

lOOK

lOOK

Part

No.

640063-3
640063-3
450464
724779

724779

724779
70716000
58713000
58714000
58714000

58714000
58676000
58676000
58713000

58714000

J601

"

[[]

~=-_L_ED=60....,7"",,)

OR602

([J

{

....

'_ED_6_05_L_E_D6_0_4_L_ED_6_03_L_E_D_60

[]

ID

[J

.....

']

ll

A

J602

VR603

0

0

Figure 34

Display

Board

ComponentLayout (Component View)

011

VR604

3-48

______

TELEX@

_

PN 802482

24

MAR

1993 Printed

in

U.S.A.