Ranger_rciss 3900eghp Cb Tranciever_service Manual
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4.0 REQUIRED TEST EQUIPMENT
c DC Power Supply (13.8VDC, 10A)
d RF Wattmeter (25~60 MHz, 50W)
e Multimeter (Digital)
f Automatic Modulation Meter
g Audio Signal Generator
h Frequency Counter (100 MHz)
i RF Signal Generator (100 MHz)
j Automatic Distortion Meter
k Oscilloscope (50 MHz)
l Sinad Meter
4.1 ALIGNMENT PROCEDURES
This transceiver has been aligned at the factory and does not require any adjustments at installation.
The required test equipment listed are used for the test setup or alignment shown in Figure 4-1
Transmitter Test Setup and Figure 4-2 Receiver Test Setup. These test setups are used in part or total
during the following adjustments and refer to Page 15 for adjustment location.
4.1.1 PLL ALIGNMENT
ITEM U.U.T. SETTING ADJUST
POINT MEASUREMENT
VCO Disconnect “short PCB” from TP7, TP8 & TP9.
Set radio to A band, CH 1 AM RX mode.
Set COARSE/FINE control at 12 o’clock.
Connect Multimeter to TP2(R116).
L17
1.6 VDC ± 0.1
Set radio to 25.615 MHz & 28.305MHz.
Connect Oscilloscope to TP3(R74).
L18
Maximum Output and
Balance
AM Frequency Set radio to A band, CH 1 AM RX mode.
Connect Frequency Counter to TP3(R74).
L19
14.9200 MHz +
20Hz
USB Frequency Set radio to A band, CH 1 USB RX mode.
Connect Frequency Counter to TP3(R74).
L20
14.9225 MHz +
20Hz
LSB Frequency Set radio to A band, CH 1 LSB RX mode.
Connect Frequency Counter to TP3(R74).
L21
14.9175 MHz +
20Hz
TX Frequency Set radio to A band, CH 1 AM TX mode.
Connect Frequency Counter to TP3(R74).
VR21
14.9200 MHz +
20Hz
AM OSC Set radio to A band, CH 1 AM TX mode.
Connect Frequency Counter to TP5(D62).
L26
10.6950 MHz +
10Hz
SSB OSC Set radio to A band, CH 1 USB TX mode.
Set radio to A band, CH 1 LSB TX mode.
Modulation off.
Short TR31 (Collector & Emitter).
Connect Frequency Counter to TP6(R102). L27
L28 10.6925 MHz + 10Hz
10.6975 MHz +
10Hz
4.1.2 TRANSMITTER ALIGNMENT
ITEM U.U.T. SETTING ADJUST
POINT MEASUREMENT
BIAS Current Set radio to A band, CH 1 USB TX mode.
- 11 - Modulation off.
Connect current meter to TP9(+) and TP8(-).
Connect current meter to TP9(+) and TP7(-).
VR11
VR10,VR20
20 mA
160 mA
SSB TX Power Set radio to A band, CH 1 USB TX mode.
Set Mic Gain Fully Clockwise.
Set RF POWER H/M/L switch to H position.
AF signal 30 mV, 1 KHz to microphone.
Connect “short PCB” to TP7, TP8 & TP9.
Connect RF Power Meter to antenna jack. L44,L42 Maximum Output
Set radio to F band, CH 40 USB TX mode. L40,L43 Maximum Output
Set radio to 25.615 MHz & 28.305MHz. L33 Maximum Output and
Balance
SSB ALC Set radio to D band, CH 1 USB TX mode.
AF signal 30 mV, 1 KHz to microphone. VR12 25W
SSB Carrier
Balance Set radio to D band, CH 1 USB TX mode.
AF signal 30 mV, 1 KHz to microphone.
Connect Oscilloscope to antenna jack. VR7 Spurious Emission to
minimum
AM/FM TX
Power Set radio to D band, CH 1 AM TX mode.
Modulation off.
Connect RF Power Meter to antenna jack. VR13 9W
RF Power
Meter Set radio to D band, CH 1 AM TX mode.
Set S-RF/SWR switch to S/RF position.
Modulation off. VR8 For a needle reading
in-between green
and red bar on TX
PWR scale.
CW TX Set radio to D band, CH 1 CW TX mode.
Plug in CW Key.
Disconnect the Mic Jack.
Connect AC Voltmeter to EXT SP. VR16 200 mV
AM Modulation
FM Deviation Set radio to D band, CH 1 AM TX mode.
Set radio to D band, CH 1 FM TX mode.
Set Mic Gain Fully Clockwise.
AF signal 30 mV, 1 KHz to microphone. VR14
VR5 90%
4KHz
SWR Meter Set radio to D band, CH 1 AM TX mode.
Set S-RF/SWR switch to SWR position.
Modulation off.
Connect 100Ω load to antenna jack. VR1 on ANT
PCB For a needle reading
of 2 on SWR scale.
4.1.3 RECEIVER ALIGNMENT
ITEM U.U.T. SETTING ADJUST
POINT MEASUREMENT
- 12 - Set radio to D band, CH 1 AM RX mode. Set RF Gain Fully Clockwise. Set SQ Control Fully Counter Clockwise. Set NB-ANL/OFF switch to OFF position. Set VOL Control at 2 o’clock. Connect RF SG to antenna jack. Frequency 26.965 MHz, 1uV. Mod 30%. L3,L4,L6, L7,L8,L10, L11,L12 Audio Output > 2V S/N > 10 dB AM Sensitivity Set radio to A band, CH 1 AM RX mode. RF SG setting 25.615 MHz. Set radio to F band, CH 40 AM RX mode. RF SG setting 28.305 MHz. L7,L8 L7,L8 Balance between 25.615 MHz and 28.305 MHz FM Sensitivity Set radio to D band, CH 1 FM RX mode. RF SG setting 26.965 MHz, 0.5uV. Mod 3KHz. L5 S/N > 20 dB USB Sensitivity Set radio to D band, CH 1 USB RX mode. RF SG setting 26.966 MHz, 0.25uV. Mod off. L13,L14 Audio Output > 2V S/N > 10 dB LSB Sensitivity Set radio to D band, CH 1 LSB RX mode. RF SG setting 26.964 MHz, 0.25uV. Mod off. L13,L14 Audio Output > 2V S/N > 10 dB NB Adjust Set radio to D band, CH 1 AM RX mode. Set NB-ANL/OFF switch to NB/ANL position. RF SG setting 26.965 MHz, 100uV. Mod off. Connect Multimeter to TP1(D2). L1,L2 DC voltage to max. > 2.0V AM Squelch Set radio to D band, CH 1 AM RX mode. Set SQ Control Fully Clockwise. RF SG setting 26.965 MHz, 1mV. Mod 30%. VR4 Slowly Adjust very slowly until squelch just open. SSB Squelch Set radio to D band, CH 1 USB RX mode. Set SQ Control Fully Clockwise. RF SG setting 26.966 MHz, 1mV. Mod off. VR3 Slowly Adjust very slowly until squelch just open. AM S-Meter Set radio to D band, CH 1 AM RX mode. Set S-RF/SWR switch to S/RF position. RF SG setting 26.965 MHz, 100uV. Mod 30%. VR1 For a reading of 9 on the S scale. SSB S-Meter Set radio to D band, CH 1 USB RX mode. RF SG setting 26.966 MHz, 100uV. Mod off. VR2 For a reading of 9 on the S scale.
- 13 - Figure 4-1 Transmitter test setup Figure 4-2 Receiver test setup SS-3900EGHP MAIN PCB ADJUSTMENT LOCATION
- 14 - SS-3900EGHP CHAPTER 5 MAINTENANCE 7? 2))6(7 )0 02 5,=(5 %,$6),1$/ %,$6 60(7(5 $0 64 23
- 15 - 5.0 PRECAUTIONS The inherent quality of the solid-state components used in this transceiver will provide many years of continuous use. Taking the following precautions will prevent damage to the transceiver. (i) Never key the transmitter unless an antenna or suitable dummy load is connected to the antenna receptacle. (ii) Ensure that the input voltage does not exceed 16 VDC or fall below 11 VDC. (iii) During alignment, do not transmit for more than 10 seconds at a time. Transmitting over long periods can cause heat built-up and cause transmitter damage. 5.1 PERIODIC INSPECTION This unit is aligned at the factory to deliver maximum performance. However, continued performance cannot be expected without periodic inspection and maintenance. Important points to be checked regularly are as follows; Check Item Action Whip antenna (option) If cracked or broken, replace it. Coaxial cable If sheath is cracked, seal with vinyl tape. If immersed with water, install new coaxial cable. Coaxial & power plug connections If loosened, reconnect. If corroded, clean contacts. Battery connection If corroded, clean power terminals. Ground terminal If corroded, clean terminal. 5.2 FUSE REPLACEMENT To protect the equipment from serious damage, a fuse is provided on the power supply lines. The fuse protect against overvoltage / reverse polarity and internal fault of the equipment. If the fuse has blown, first find out the cause of the trouble before replacing it. A fuse rated for more than the transceiver requirement should not be used, since it may permanently damage the equipment. Damage due to overfusing is not covered by the warranty. SS-3900EGHP CHAPTER 6 DIAGRAMS & PARTS LIST
- 16 - 6.0 GENERAL Information on most electrical and mechanical parts is included in the parts list. The reference designators are in alphanumeric order. 6.1 ORDERING REPLACEMENT PARTS Parts orders should be referred to the Parts Department at: • Ranger Communications, Inc. 401 W. 35 Th ST., # B, NATIONAL CITY, CA 91950-7909 Fax: (619) 426-3788 ROTARY SWITCH PCB (EPT360022Z)
- 17 - (Component Side) PART LIST: SS-3900EGHP ROTARY SW P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 1 EPT360022Z ROTARY SW PCB 2 R322,R323,R324 RCU141024Z C/F/R 1K Ω 1/4W 3 R315 RCM144714A C/F/R 470 Ω 1/4W 4 R313,R316,R317,R318,R319, R321 RCM141024A C/F/R 1K Ω 1/4W 5 R312,R314,R320 RCM141024B C/F/R 1K Ω 1/4W 6 CH SW EWRT32000S ROTARY SW GPS-0501 7 J304 EX07N40014 PCB CONN/S 10PIN 8 J305 WX01070703 JUMPER WIRE 7x3x7 9 D313,D314,D312,D315,D323 ,D324,D326,X1,D316 WX01070704 JUMPER WIRE 7x4x7 10 D325 WX01070705 JUMPER WIRE 7x5x7 11 J303,D311 WX01070710 JUMPER WIRE 7x10x7 12 J302 WX01070708 JUMPER WIRE 7x8x7 DISPLAY PCB (EPT360032A) 57
- 18 - (Component Side) PART LIST: SS-3900EGHP DISPLAY P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 1 EPT360032A DISPLAY PCB 2 DISPLAY PCB EX03N40003 LED DISPLAY (RED) 3 D309(R/T) EX01N40004 LED (RED/GREEN) ANT PCB (EPT360042Z)
- 19 - (Component Side) (Copper Side) PART LIST: SS-3900EGHP ANT P.C.B ITEM REFERENCE NUMBER RANGER PART NUMBER DESCRIPTION 4 EPT360042Z ANT PCB 5 R9 RCY010004Z CHIP/F/R 0 Ω 0.1W 6 R1 RCY014714Z CHIP/F/R 470 Ω 0.1W 7 R3,R4 RCY011014Z CHIP/F/R 100 Ω 0.1W 8 R2 RCY013314Z CHIP/F/R 330 Ω 0.1W 9 R5,R11 RCY011024Z CHIP/F/R 1K Ω 0.1W 10 R10,R12 RCY012224Z CHIP/F/R 2.2K Ω 0.1W 11 R7 RCY011034Z CHIP/F/R 10K Ω 0.1W 12 C5 RCY011534Z CHIP/F/R 15K Ω 0.1W 13 C7 CK1059AB1A CHIP/C 0.5PF 50WV 14 C6 CK1030AB1A CHIP/C 3PF 50WV 15 C3,C4 CK2104AB7R CHIP/C 0.1µF 25WV 16 C1,C2 CK1102AB7L CHIP/C 0.001µF 50WV 17 Q1 TY2SC2712G TR 2SC2712GR-TE85L 18 D3 EDSS00355Y DIODE 1SS355 19 D1,D2 EDHM0198SY DIODE HSM198S 20 D4 EDMA0028TY DIODE MA28T 21 L1 ECRFZ10204 C.M.E. BRAND CORE BF2159576 22 VR1 RE10300009 S/F/R 10K Ω 23 JP1 WX01070715 JUMPER WIRE 7x15x7 MIC PCB (EPT360050Z)