Uniden Harry Manual de usuario

unlden*

SERVICE MANUAL

HARRY

ALIGNMENT PROCEDURE

Alignment of P.LL

1. Test Equipment Required

DC Power Supply : 8V(DC

Oscillator

2. Alignm ent Procedure

Step Preset to Adjustment Remarks

1TX40CH L702 Connect a DC Voltmeter to VCO.

Adjust L702 for 4.5V ± 0.1V reading on the DC Voltmeter.

2RX 40cH L701 Ditto

3. Alignm ent Points

DC Voltmeter

: 10.2419 MHz

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77Î

H AR RY 1

Alignment of FM PCB

Test Equipment Required

DC Power Supply (DC 8V FM SG 450KHz

Oscilloscope AC Voltmeter 2

Oscillator DC Voltmeter

2. Alignm ent Procedure

PA : OFF

Step Preset to Adjustment Remarks

FM SG : 3mV out

1kHz, ± 15kHz

dev.

L601 Connect a DC Voltmeter to between TP601 and GND.

Adjust 1601 for 4.5 ± 0.1V reading on the DC Voltmeter.

Check if voltage value is 150—350 mV.

Osc : 10mV

1kHz

VR601

middle

position

Adjust VR601 for 4—9 mV reading on the AC Voltmeter.

UT-JttZ H ARRY 2

Alignment of Transmitter Section

1. Test Equipment Required

DC Power Supply (DC 13.8 V Dummy Ioad50£2

OSC : 1 kHz RF power meter

Deviation meter

2. Alignment Procedure

Step Preset to Adjustment Remarks

CH 19

Mod. 500mV

input

L6 and L9 Connect the RF power meter to Antenna jack.

Adjust coils for maximum reading on the RF power meter.

2No. Mod.

CH19 L6 Adjust L6(CW for 4.0W reading on the RF power meter.

3Ditto VR2 Adjust VR 2 so that the 4th LED just turns on.

Mod. 30mV

input

CH 1

VR601 Adjust VR601 for ± 3kHz dev. reading on the déviation

meter.

Nöte : After Alignm ent, lock with paraffin the area of LS and L9.

3. Alignm ent Points

и т - з « г HARRY 3

Alignment of Receiver Section

1. Test Equipment Required

DC Power Supply : DC 13.8V

5.5. G.

2. Préparation for Alignm ent

5.5. G. : 1kHz 30% Mod.(AM

1kHz ± 1.5 kHz Dev. (FM

Output impédance : 8Q

Squelch : Min (Counterdockwise

3. Alignm ent Procedure

Dummy load : 50Q

Frequency : 27.185 MHz

Attenuator : OdB = O.SpV

Step Preset to Adjustment Remarks

1AM

CH 19

volume : Max.

Ll.2 ,3

and L11

Connect the S.S.G. to antenna jack and AF VTVM to

External speaker (J3 .

Adjust coils for maximum reading on the AF VTVM

2Ditto VR4

Set the S.S.G. attenuator to -3dB and adjust the output

power to 5mW. (If the adjusting range is underthe desired

power, set VR2 to the minimum. If the one is over the

desired power, set it to the maximum.

3AM

CH 19

No MOD VR3' Set the S.S.G. to 1000mV output level.

Adjust VR3 so thatthe4th LED just turns on.

CH 19

Vol. : Max

Squelch : Max

VR1 Adjust VR1 so that squelch just breaks.

5FM

CH 19 L601 Set the S.S.G. to 100pV output level.

Adjust L601 for 4,5 + 0.2V reading on the DC Voltmeter.

4. Alignm ent Points

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HARRY

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HOTES:

. RESISTANCE VALUES ARE SHOVN IN OHMS UNLESS

OTHERVISE NOTED. (K-KILO OHM. M*MEG OHM

2. RESISTOR WATTAGES ARE 1/8V UNLESS OTHERVISE

NOTED.

3. CAPACITANCE VALUES ARE INOICATED IN MICRO FARADS

UNLESS OTHERVISE NOTEO. tP-MICRO-MICRO FARADI

5. VOLTAGE IN Œ D SHOVS TX CONDITION.

6. VOLTAGE IN NO. MARK SHOVS RX CONDITION.

DES1GN.BT DRAWN.BY UNIDEN NO.

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HOOEL NO.

H A R R Y

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