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JACK

SERVICE MANUAL

ALIGNMENT OF PLL & CARRIER OSCILLATOR PORTION

1. Test Equipment Required

a ) . RF VTVM

b ) . DC Power Supply (13.8V)

c ) . Frequency Counter (0 - 50MHz)

d ) . 50 ohm Load.

2. Alignment Procedure

STEP PRESET ТО

ÂDJUSTMENI

REMARKS

1

Channel: 40

Mode: AM, RX.

Clari: Center

Tone : Low

PA/СВ: CB

L16

Connect RF VTVM to TP4 ( lead of R112).

Adjust L16 for the maximum indication on

oscilloscope.

2

Same as above

EXE PT

L17

Connect DC Voltmeter to TP2 (lead of R117).

Adjust L17 to obtain 5.5V reading and

confirm beyound 2V in Low Band, channel 1.

3

Same as Step 1

L18

Connect RF VTVM to TP3 (lead of R81).

Adjust L18 for the maximum reading.

4

Same as Step 1

L20

Connect Frequency counter to TP3 (lead of

R81). Adjust L20 to obtain 16.7100MHz

reading.

5

Mode: USB, RX. L21

Adjust L21 to obtain 16.7125MHz reading.

6

Mode: LSB, RX.

L22 Adjust L22 to obtain 16.7075MHz reading.

7

Mode: LSB, TX.

VR6

Adjust VR6 to obtain 16.7075MHz reading.

8

Mode: LSB, RX.

L25 Connect Frequency counter to TP5 (lead of

R53). Adjust L25 to obtain 10.6975MHz

reading.

9

Mode: USB, RX.

L24

Adjust L24 to obtain 10.6925MHz reading.

10

Mode: AM, TX. L23

Connect Frequency counter to TP9(lead of

R84). Adjust L23 to obtain 10.6950MHz

read ing.

Form; AJT501-T-I JACK

3. Test Equipment Connection

Form; AJT501—T—2 JACK

Alignment Test Point

ALIGNMENT OF TRANSMITTER PORTION

1. Test Equipment Required

a ) . AF Signal Generator (1) for 500Hz and 1,000Hz

b ) . AF Signal Generator (2) for 2,400Hz

c ) . AF VTVM ( 150mV fu ll scale) d). RF VTVM (50V.full scale)

e). RF Powermeter (10W Max. Thruline type) f) . 50 ohm Dummy Load

g). Oscilloscope h). Harmonie Meter

i) . DC Voltmeter j). DG Ammeter (150mA fu ll scale)

2. Alignment Procedure

STEP

PRESET TO

ADJUSTMENT

REMARKS

1 Channel: 19

Mode: USB, TX.

No Modulation

VR10

Connect DC Ammeter to TP8(+), TP7(-).

Disconnect the PC-834AA. Adjust VR10 to

obtain the current approx.8mA.

2

Same as Step 1

VR9

Connect DC Ammeter to TP8(+), TP6(-).

Adjust VR9 to obtain the current approx.

100mA.

3 Channel : 19

Mode: USB, TX.

AF SG: 30mV,

Two Tone

500 and 2400Hz

L43 and L44

Disconnect the DC Ammeter. Connect PC-834.

Connect Powermeter, RF VTVM & Oscilloscope.

Set VR7 CW Max. Adjust the peak indica

tion of coils to 19CH.

4

Same as above

exept

Channel: 19

L42

Turn the coar of L41 to be fia t with upper

side of the c o il's cover. Adjust L42 for

the maximum indication.

5

Same as above

exept

Channel: 19

L41

Adjust L41 for the maximum indication.

While then, keep output voltage under 20V

by adjusting SG.

6

Same as above

Channel : 1

40

L41 Adjust L41 to obtain the minimum d iffé r

ence on the RF power meter between

Channel 40 and Channel 1.

7

Channel: 19

Mode: AM, TX.

90% modulation

L30 Adjust L30 to obtain the maximum indica

tion on the RF VTVM.

8 same as step 3

VR7

Adjust VR7 to obtain RF output of 24.5V on

the RF VTVM.

9

Same as Step 1

VR4

Adjust VR4 to obtain the minimum carrier

leakage.

Form; AJT501-T-3 JACK

STEP

PRESET TO

ADJUSTMENT

REMARKS

10 Same as Step 1

except LSB

VR4

Same as above

11

Repeat Steps 9 and 10 to obtain approximately the same amount of minimum

carrier leakege on USB and LSB modes.

12

Channel : 19

Mode: AM, TX.

No Modulation

VR11

Adjust VR11 to obtain RF carrier power of

5.0W on RF Power meter.

13 Same as above

VR8

Adjust VR8 to obtain an indication of

marked position on b uilt-in meter.

14 Same as above

exept

AF SG: 30mV

lKHz Mod.

VR5

Adjust VR5 to obtain 90% (negative)

modulation.

15

Same as above

except

Mode: FM

VR3

Connect Deviation meter. AF SSG supplies

lKHz, 30mV. Adjust VR3 to obtain 4.5KHz

Deviation on Deviation meter.

3. Test Equipment Connection

FM LINEAR DETECTOR

Form; AJT501-T-4 JACK

Alignment Test Point

ALIGNMENT OF RECEIVER PORTION

1. Test Equipment Required

a ) . RF SSG

b ) . DC Voltmeter

c ) . AF VTVM

d ) . Oscilloscope

2. Alignment Procedure

Connect the AF VTVM and 8 ohm dummy load to EXT SP Jack during the

alignment of receiver portion.

STEP

PRESET TO

ADJUSTMENT

REMARKS

1

Channel: 19

NB/ANL: OFF

SQL: OFF

RF GAIN: Max

AF VOL: Max

MODE: AM

CB/РА: CB

Set RF SG to 27.185MHz with 30%, 1kHz

modulation.

2

Same as above

L7

Turn the core of L7 to CW. maximum at the

bottom.

3

Same as above L6, 8, 10, 11

12, 13, 14.

Adjust coils to obtain the maximum AF

output power. While then, keep output

under 500mW by adjusting RF SG.

4

Same as abov e

L7

Adjust L7 to obtain the maximum AF output

power.

5

Channel: 18

Mode: AM

AB/ANL: ON

Band: mid.

LI and L2 Connect oscilloscope to TPl. Set RF SSG to

18ch with no modulation. (SG ATT.: 20dB)

Adjust LI and L2 to obtain the maximum DC

voltage.

6

Channel : 19

Mode: AM

SQL: MAX

VR2 Set SSG 19ch, lKHz, 30% Mod. Adjust

VR2 to turn o ff the squelch circu it when

SSG output comes up to lOOOuV.

7

Same as above VR1

Set the SSG to lOOuV output with

no-modulation. Adjust VR1 to obtain "S-9"

on transceiv er's meter.

Form; AJT501-T-5 JACK

STEP

PRESET TO ADJUSTMENT

REMARKS

8

CH: 19

Mode: FM

L3 and L4 Set the SSG to 5uV, N0 Modulation.

Connect Oscilloscope to TP10(lead of R279).

Adjust Coils to obtain the maximum

indication on Oscilloscope.

9 Same as above

L5

Set the SSG to FM lKHz, 1.5KHz Deviation

lmV. Adjust L5 to obtain the maximum

indication on Oscilloscope.

3. Test Equipment Connection

SIGNAL GENERATOR TRANSCEIVER

AF V T V M OSCILLOSCOPE

8 О

RESISTOR

Form; AJT501-T-6

JACK

AIignment Test Point

FREOUENCTES OF LOFAI. OSCTLLATORS ANI) TF STAFF IN RECKI.V1NC STATE

Channe1

Recept ion

Divide

Local O scillator Freq

uencics

No.

Freq uenc i es

(MHz)

Ratio

(N) AM/FM mode

(MHz)

USB mode'

LSB mode

1

26.965 79

16.270

16.272,5

16.2675

2

.975

80

16.280

16.2825

16.2775

3

.985

81 16.290

16.2925

16.2875

4

27.005

83 16.310

16.3125 16,3075

5

.015 84

16.320

16.3225 16.3175

6

.025 85

16.330

16.3325

16.3275

7 .035

86 16.340

16.3425 16.3375

8 .055

88

16.360

16.3625 16.3575

9 .065

89 16.370

16.3725 16.3675

10

.075

90

16.380

16.3825 16.3775

11

.085

91 16.390

16.3925

16.3875

12

.105

93 ■ 16.410

16.4125

16.4075

13

.115

94

16.420

16.4225

16.4175

14

.125

95 16.430

16.4325

16.4275

15 .135

96 16.440

16.4425

16.4375

16

.155

98 16.460

16.4625

16.4575

17

.165

99

16.470

16.4725 16.4675

18 .175

100

16.480

16.4825

16.4775

19

.185

101

16.490

16.4925 16.4875

20

.205

103

16.510

16.5125

16.5075

21 .215

104 16.520

16.5225

16.5175

22

.225

105

16.530

16.5325 16.5275

23 .255

108

16.560.

16.5625

16.5575

24

.235

106

16.540

16.5425

16.5375

25

.245

107

16.550

16.5525

16.5475

26 .265

109

16.570

16.5725

16.5675

27 .275

110 16.580 16.5825 16.5775

28

.285

111

16.590

16.5925

16.5875

29

.295

112

16.600

16.6025

16.5975

30

. 305

113

16.610

16.6125

16.6075

31

. 315

114

16.620

16.6225

16.6175

32

.32 5

115

16.630

16.6325

16.6275

33

.335

116 16.640

16.6425

16.6375

34

.34 5

117

16.650

16.6525

16.6475

35

. 355

118

16.660

16.6625

16.6575

36

.365

119

16.670

16.6725

16.6675

37

. 375

120

16.680

16.6825

16.6775

38

. 385

121

16.690

16.6925

16.6875

39

. 395

122 16.700

16.7025

16.6975

40

.405

123

16.710

16.7125

16.7075

ls t

IF Frequency is 10.

.69 S MHz on a il of 40 channels.

10.695MHz

10 695MHz

10. 695MHz

ANT

R X

TX

___

I

____

AM MOD

AMP

TR 46

BLOCK DIAGRAM

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рвВБюет:

ELECTRONICS EUROPE

SX CAPITAL 20.000.000 F.F. • SIREN SETE3 IS S30 490

SIEGE SOCIAL

Route de SETE-BP 100

34540 BALARUC - Tél : 67.46.27.27

Télex : 490534F • Fax : 67.48.48.49

BRANCHEMENT PRISE MICRO 6 BROCHES NC 518

N* BROCHES

1

2

3

4

5

6

DESIGNATION CABLES

Modulation

RX

TX

Non connectée

Masse

Alimentation

ATTENTION BIEN VERIFIER LE BRANCHEMENT DE LA BROCHE 6

SUCCURSALE «ILE DE FRANCE»

50/56, Rue du Pré des Aulnes • Parc d'activités des Arpents

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Tél : (1) 60.29.28.27* Fax : (1) 60.28.44.00

BRANCHEMENT PRISE MICRO 4 BROCHES NC 514

N 4 BROCHES

1

2

3

4

DESIGNATION CABLES

Masse

Modulation

TX

RX

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