PRESIDENT Jack Manuel utilisateur

f t æ s i û e m ;

JACK

SERVICE MANUAL

ALIGNMENT OF PLL & CARRIER OSCILLATOR PORTION

1. Test Equipment Required

a) . RF VTVM

b) . DC P wer Supply (13.8V)

c) . Frequency C unter (0 - 50MHz)

d) . 50 hm L ad.

2. Alignment Pr cedure

STEP PRESET ТО ADJUSTMENT REMARKS

1Channel: 40

M de: AM, RX.

Clari: Center

T ne : L w

PA/СВ: CB

L16 C nnect RF VTVM t TP4 (lead f R112).

Adjust L16 f r the maximum indicati n n

scill sc pe.

2Same as ab ve

EXE PT L17 C nnect DC V ltmeter t TP2 (lead f R117).

Adjust L17 t btain 5.5V reading and

c nfirm bey und 2V in L w Band, channel 1.

3Same as Step 1 L18 C nnect RF VTVM t TP3 (lead f R81).

Adjust L18 f r the maximum reading.

4Same as Step 1 L20 C nnect Frequency c unter t TP3 (lead f

R81). Adjust L20 t btain 16.7100MHz

reading.

5M de: USB, RX. L21 Adjust L21 t btain 16.7125MHz reading.

6M de: LSB, RX. L22 Adjust L22 t btain 16.7075MHz reading.

7M de: LSB, TX. VR6 Adjust VR6 t btain 16.7075MHz reading.

8M de: LSB, RX. L25 C nnect Frequency c unter t TP5 (lead f

R53). Adjust L25 t btain 10.6975MHz

reading.

9M de: USB, RX. L24 Adjust L24 t btain 10.6925MHz reading.

10 M de: AM, TX. L23 C nnect Frequency c unter t TP9(lead f

R84). Adjust L23 t btain 10.6950MHz

reading.

Form; A JT 501-T-1 JACK

3. Test Equipment C nnecti n

Form; AJT501—T—2 JACK

Alignment Test Point

LI 8

LI 6

—0

TP4

RI 12

RI 17

TP2

LI 7

TP l I

R2I

R84

TP 9

L20 L2I L22 L25 L24 L23

□ш еи: G -T P 5

R 53

VR6

ALIGNMENT OF TRANSMITTER PORTION

1. Test Equipment Required

a) . AF Signal Generat r (1) f r 500Hz and 1,000Hz

b) . AF Signal Generat r (2) f r 2,400Hz

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

e). RF P wermeter (10W Max. Thruline type) f). 50 hm Dummy L ad

g). Oscill sc pe h). Harm nie Meter

i). DC V ltmeter j). DG Ammeter (150mA full scale)

2. Alignment Pr cedure

STEP PRESET TO ADJUSTMENT REMARKS

1Channel: 19

M de: USB, TX.

N M dulati n

VR10 C nnect DC Ammeter t TP8(+), TP7(-).

Disc nnect the PC-834AA. Adjust VR10 t

btain the current appr x.8mA.

2Same as Step 1 VR9 C nnect DC Ammeter t TP8(+), TP6(-).

Adjust VR9 t btain the current appr x.

100mA.

3Channel : 19

M de: USB, TX.

AF SG: 30mV,

Tw T ne

500 and 2400Hz

L43 and L44 Disc nnect the DC Ammeter. C nnect PC-834.

C nnect P wermeter, RF VTVM & Oscill sc pe.

Set VR7 CW Max. Adjust the peak indica

ti n f c ils t 19CH.

4Same as ab ve

exept

Channel: 19

L42 Turn the c ar f L41 t be fiat with upper

side f the c il's c ver. Adjust L42 f r

the maximum indicati n.

5Same as ab ve

exept

Channel: 19

L41 Adjust L41 f r the maximum indicati n.

While then, keep utput v ltage under 20V

by adjusting SG.

6 Same as ab ve

Channel : 1

L41 Adjust L41 t btain the minimum différ

ence n the RF p wer meter between

Channel 40 and Channel 1.

7Channel: 19

M de: AM, TX.

90% m dulati n

L30 Adjust L30 t btain the maximum indica

ti n n the RF VTVM.

8 same as step 3 VR7 Adjust VR7 t btain RF utput f 24.5V n

the RF VTVM.

9Same as Step 1 VR4 Adjust VR4 t btain the minimum carrier

leakage.

Form; A J T 5 01-T -3 JACK

STEP PRESET TO ADJUSTMENT REMARKS

10 Same as Step 1

except LSB VR4 Same as ab ve

11 Repeat Steps 9 and 10 t btain appr ximately the same am unt f minimum

carrier leakege n USB and LSB m des.

12 Channel : 19

M de: AM, TX.

N M dulati n

VR11 Adjust VR11 t btain RF carrier p wer f

5.0W n RF P wer meter.

13 Same as ab ve VR8 Adjust VR8 t btain an indicati n f

marked p siti n n built-in meter.

14 Same as ab ve

exept

AF SG: 30mV

lKHz M d.

VR5 Adjust VR5 t btain 90% (negative)

m dulati n.

15 Same as ab ve

except

M de: FM

VR3 C nnect Deviati n meter. AF SSG supplies

lKHz, 30mV. Adjust VR3 t btain 4.5KHz

Deviati n n Deviati n meter.

3. Test Equipment C nnecti n

FM LINEAR DETECTOR

Form; A J T 501-T - JACK

Al ignment Test Point

L4 2 L4I

L43

L44

VR3 VR4

ч.

ALIGNMENT OF RECEIVER PORTION

1. Test Equipment Required

a) . RF SSG

b) . DC V ltmeter

c) . AF VTVM

d) . Oscill sc pe

2. Alignment Pr cedure

C nnect the AF VTVM and 8 hm dummy l ad t EXT SP Jack during the

alignment f receiver p rti n.

STEP PRESET TO ADJUSTMENT REMARKS

1Channel: 19

NB/ANL: OFF

SQL: OFF

RF GAIN: Max

AF VOL: Max

MODE: AM

CB/РА: CB

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

m dulati n.

2Same as abcwe L7 Turn the c re f L7 t CW. maximum at the

b tt m.

3Same as ab ve L6, 8, 10, 11

12, 13, 14. Adjust c ils t btain the maximum AF

utput p wer. While then, keep utput

under 500mW by adjusting RF SG.

4Same as ab v e L7 Adjust L7 t btain the maximum AF utput

p wer.

5Channel: 18

M de: AM

AB/ANL: ON

Band: mid.

LI and L2 C nnect scill sc pe t TPl. Set RF SSG t

18ch with n m dulati n. (SG ATT. :20dB)

Adjust LI and L2 t btain the maximum DC

v ltage.

6Channel : 19

M de: AM

SQL: MAX

VR2 Set SSG 19ch, lKHz, 30% M d. Adjust

VR2 t turn ff the squelch circuit when

SSG utput c mes up t lOOOuV.

7Same as ab ve VR1 Set the SSG t lOOuV utput with

n -m dulati n. Adjust VR1 t btain "S-9"

n transceiv er's meter.

Form; A JT 501 -T -5 JACK

STEP PRESET TO ADJUSTMENT REMARKS

8CH: 19

M de: FM L3 and L4 Set the SSG t 5uV, N0 M dulati n.

C nnect Oscill sc pe t TP10(lead f R279).

Adjust C ils t btain the maximum

indicati n n Oscill sc pe.

9 Same as ab ve L5 Set the SSG t FM lKHz, 1.5KHz Deviati n

lmV. Adjust L5 t btain the maximum

indicati n n Oscill sc pe.

3. Test Equipment C nnecti n

SIGNAL GENERATOR TRANSCEIVER AF VTV M OSCILLOSCOPE

8 О

RESISTOR

Form; A JT 501-T-6 JACK

AIignment Test Point

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