PRESIDENT Jack User manual

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
f
LI 8
LI 6
—0
TP4
RI 12
RI 17
TP2
0
LI 7
"0
TP l I
R2I
R84
TP 9
L20 L2I L22 L25 L24 L23
□ш еи: G -T P 5
R 53
VR6
c

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
40
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