PRESIDENT Jack User manual

р в е я ю т с
JACK
SERVICE MANUAL

ALIGNMENT OF PLL & CARRIER OSCILLATOR PORTION
1. Test Equipment Required
) . RF VTVM
b ) . DC Power Supply (13.8V)
c ) . Frequency Counter (0 - 50MHz)
d ) . 50 ohm Lo d.
2. Alignment Procedure
STEP PRESET ТО ÂDJUSTMENI REMARKS
1Ch nnel: 40
Mode: AM, RX.
Cl ri: Center
Tone : Low
PA/СВ: CB
L16 Connect RF VTVM to TP4 ( le d of R112).
Adjust L16 for the m ximum indic tion on
oscilloscope.
2S me s bove
EXE PT L17 Connect DC Voltmeter to TP2 (le d of R117).
Adjust L17 to obt in 5.5V re ding nd
confirm beyound 2V in Low B nd, ch nnel 1.
3S me s Step 1 L18 Connect RF VTVM to TP3 (le d of R81).
Adjust L18 for the m ximum re ding.
4S me s Step 1 L20 Connect Frequency counter to TP3 (le d of
R81). Adjust L20 to obt in 16.7100MHz
re ding.
5Mode: USB, RX. L21 Adjust L21 to obt in 16.7125MHz re ding.
6Mode: LSB, RX. L22 Adjust L22 to obt in 16.7075MHz re ding.
7Mode: LSB, TX. VR6 Adjust VR6 to obt in 16.7075MHz re ding.
8Mode: LSB, RX. L25 Connect Frequency counter to TP5 (le d of
R53). Adjust L25 to obt in 10.6975MHz
re ding.
9Mode: USB, RX. L24 Adjust L24 to obt in 10.6925MHz re ding.
10 Mode: AM, TX. L23 Connect Frequency counter to TP9(le d of
R84). Adjust L23 to obt in 10.6950MHz
re d 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
) . AF Sign l Gener tor (1) for 500Hz nd 1,000Hz
b ) . AF Sign l Gener tor (2) for 2,400Hz
c ) . AF VTVM ( 150mV fu ll sc le) d). RF VTVM (50V.full sc le)
e). RF Powermeter (10W M x. Thruline type) f ) . 50 ohm Dummy Lo d
g). Oscilloscope h). H rmonie Meter
i) . DC Voltmeter j). DG Ammeter (150mA fu ll sc le)
2. Alignment Procedure
STEP PRESET TO ADJUSTMENT REMARKS
1 Ch nnel: 19
Mode: USB, TX.
No Modul tion
VR10 Connect DC Ammeter to TP8(+), TP7(-).
Disconnect the PC-834AA. Adjust VR10 to
obt in the current pprox.8mA.
2S me s Step 1 VR9 Connect DC Ammeter to TP8(+), TP6(-).
Adjust VR9 to obt in the current pprox.
100mA.
3 Ch nnel : 19
Mode: USB, TX.
AF SG: 30mV,
Two Tone
500 nd 2400Hz
L43 nd L44 Disconnect the DC Ammeter. Connect PC-834.
Connect Powermeter, RF VTVM & Oscilloscope.
Set VR7 CW M x. Adjust the pe k indic 
tion of coils to 19CH.
4S me s bove
exept
Ch nnel: 19
L42 Turn the co r of L41 to be fi t with upper
side of the c o il's cover. Adjust L42 for
the m ximum indic tion.
5S me s bove
exept
Ch nnel: 19
L41 Adjust L41 for the m ximum indic tion.
While then, keep output volt ge under 20V
by djusting SG.
6S me s bove
Ch nnel : 1
40
L41 Adjust L41 to obt in the minimum d iffé r
ence on the RF power meter between
Ch nnel 40 nd Ch nnel 1.
7Ch nnel: 19
Mode: AM, TX.
90% modul tion
L30 Adjust L30 to obt in the m ximum indic 
tion on the RF VTVM.
8 s me s step 3 VR7 Adjust VR7 to obt in RF output of 24.5V on
the RF VTVM.
9S me s Step 1 VR4 Adjust VR4 to obt in the minimum c rrier
le k ge.
Form; AJT501-T-3 JACK

STEP PRESET TO ADJUSTMENT REMARKS
10 S me s Step 1
except LSB VR4 S me s bove
11 Repe t Steps 9 nd 10 to obt in pproxim tely the s me mount of minimum
c rrier le kege on USB nd LSB modes.
12 Ch nnel : 19
Mode: AM, TX.
No Modul tion
VR11 Adjust VR11 to obt in RF c rrier power of
5.0W on RF Power meter.
13 S me s bove VR8 Adjust VR8 to obt in n indic tion of
m rked position on bu ilt-in meter.
14 S me s bove
exept
AF SG: 30mV
lKHz Mod.
VR5 Adjust VR5 to obt in 90% (neg tive)
modul tion.
15 S me s bove
except
Mode: FM
VR3 Connect Devi tion meter. AF SSG supplies
lKHz, 30mV. Adjust VR3 to obt in 4.5KHz
Devi tion on Devi tion meter.
3. Test Equipment Connection
FM LINEAR DETECTOR
Form; AJT501-T-4 JACK

Alignment Test Point

ALIGNMENT OF RECEIVER PORTION
1. Test Equipment Required
) . RF SSG
b ) . DC Voltmeter
c ) . AF VTVM
d ) . Oscilloscope
2. Alignment Procedure
Connect the AF VTVM nd 8 ohm dummy lo d to EXT SP J ck during the
lignment of receiver portion.
STEP PRESET TO ADJUSTMENT REMARKS
1Ch nnel: 19
NB/ANL: OFF
SQL: OFF
RF GAIN: M x
AF VOL: M x
MODE: AM
CB/РА: CB
Set RF SG to 27.185MHz with 30%, 1kHz
modul tion.
2S me s bove L7 Turn the core of L7 to CW. m ximum t the
bottom.
3S me s bove L6, 8, 10, 11
12, 13, 14. Adjust coils to obt in the m ximum AF
output power. While then, keep output
under 500mW by djusting RF SG.
4S me s bov e L7 Adjust L7 to obt in the m ximum AF output
power.
5Ch nnel: 18
Mode: AM
AB/ANL: ON
B nd: mid.
LI nd L2 Connect oscilloscope to TPl. Set RF SSG to
18ch with no modul tion. (SG ATT.: 20dB)
Adjust LI nd L2 to obt in the m ximum DC
volt ge.
6Ch nnel : 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.
7S me s bove VR1 Set the SSG to lOOuV output with
no-modul tion. Adjust VR1 to obt in "S-9"
on tr nsceiv er's meter.
Form; AJT501-T-5 JACK

STEP PRESET TO ADJUSTMENT REMARKS
8CH: 19
Mode: FM L3 nd L4 Set the SSG to 5uV, N0 Modul tion.
Connect Oscilloscope to TP10(le d of R279).
Adjust Coils to obt in the m ximum
indic tion on Oscilloscope.
9 S me s bove L5 Set the SSG to FM lKHz, 1.5KHz Devi tion
lmV. Adjust L5 to obt in the m ximum
indic tion on Oscilloscope.
3. Test Equipment Connection
SIGNAL GENERATOR TRANSCEIVER AF V TV M OSCILLOSCOPE
8 О
RESISTOR
Form; AJT501-T-6 JACK

AIignment Test Point

FREOUENCTES OF LOFAI. OSCTLLATORS ANI) TF STAFF IN RECKI.V1NC STATE
Ch nne1 Recept ion Divide Loc l O scill tor Freq uencics
No. Freq uenc i es
(MHz) R tio
(N) AM/FM mode (MHz)
USB mode' LSB mode
126.965 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
427.005 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 il of 40 ch nnels.

10.695MHz 10 695MHz 10. 695MHz
ANT
R X
TX
___ I ____
AM MOD
AMP
TR 46

BLOCK DIAGRAM
MODEL:JACK
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DESIGNATION CABLES
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