Alinco DJ-C7T/E Service Manual

21 
  
L27 QC0592 Chip Inductor LQW1608A47NJ00T1 R13 RK3530 Chip R. 1005 1/16W 220 OHM J
L28 QC0718 Chip Inductor LQW1608AR33J00T1 R14 RK3550 Chip R. 1005 1/16W 10K OHM J
L29 QC0597 Chip Inductor LQW1608AR12J00T1 R15 RK3536 Chip R. 1005 1/16W 680 OHM J
L30 QC0720 Chip Inductor LQW1608AR47J00T1 R16 RK3550 Chip R. 1005 1/16W 10K OHM J
L31 QC0598 Chip Inductor LQW1608AR15J00 R17 RK3542 Chip R. 1005 1/16W 2.2K OHMJ
L32 QC0597 Chip Inductor LQW1608AR12J00T1 R18 RK3550 Chip R. 1005 1/16W 10K OHM J
L33 QC0586...

22 
  
R91 RK3574 Chip R. 1005 1/16W 1.0M OHMJ R167 RK3550 Chip R. 1005 1/16W 10K OHM J
R92 RK3574 Chip R. 1005 1/16W 1.0M OHMJ R168 RK3542 Chip R. 1005 1/16W 2.2K OHMJ
R93 RK3574 Chip R. 1005 1/16W 1.0M OHMJ R170 RK3574 Chip R. 1005 1/16W 1.0M OHMJ
R94 RK3554 Chip R. 1005 1/16W 22K OHM J R171 RK3536 Chip R. 1005 1/16W 680 OHM J
R96 RK3554 Chip R. 1005 1/16W 22K OHM J R172 RK3574 Chip R. 1005 1/16W 1.0M OHMJ
R97 RK3550 Chip R. 1005 1/16W 10K OHM J R173 RK3522 Chip R. 1005 1/16W 47 OHM J
R98 RK3554 Chip...

23 
  
R324 RK3538 Chip R. 1005 1/16W 1.0K OHMJ
R325 RK3538 Chip R. 1005 1/16W 1.0K OHMJ
R326 RK3559 Chip R. 1005 1/16W 56K OHM J
R327 RK3538 Chip R. 1005 1/16W 1.0K OHMJ AF0032 OPH17+3 FE N3
R328 RK3572 Chip R. 1005 1/16W 680K OHMJ AF0033 OPH P17+3 FE/BZN3
R329 RK3570 Chip R. 1005 1/16W 470K OHMJ AN0012 RND N7X0.75 BR/B.ZN
R330 RK3563 Chip R. 1005 1/16W 120K OHMJ AX0006 OPH P1.7+5.5 FE/BZN3
R331 RK3574 Chip R. 1005 1/16W 1.0M OHMJ DP0163 LCD PANEL
R332 RK3526 Chip R. 1005 1/16W 100 OHM J ES0030 Speaker...

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ADJUSTMENT 
  
1) Required Test Equipment 
  
    The following items are required to adjust radio parameters. 
  
  
1. Regulated Power Supply 
   Supply voltage:  6.0VDC 
    Current:   1A or more 
  
2. Digital Multimeter 
   Voltage range:  FS = Approx. 20V 
   Current:   10A or more 
   Input resistance:  High impedance 
  3. Oscilloscope 
   Measurable frequency: Audio Frequency 
 
  4. Audio Dummy Load 
   Impedance:  8Ω 
   Dissipation:  1W or more 
   Jack:   2.5Ф 
 
 5. SSG 
   Output...

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2) Entering and Releasing the Adjustment Mode 
  
The DJ-C7 does not require a serviceperson to manipulate the components on the printed-circuit board, except 
the trimmer when adjusting reference frequency and deviation. Most of the adjustments for the transceiver are 
mode by using the keys on it while the unit is in the adjustment mode. Because the adjustment mode 
temporarily uses the channels, frequency must be set on each channel before adjustments can be mode. For 
instructions on how to...

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Set power supply voltage to 6.0V. 
  
1. Reference frequency adjustment 
Display: FrEq,ççç Adjust point: TC1 
Adjust the TC1 to 435.03MHz (C7E).   
    Adjust the TC1 to 445.03MHz (C7T). 
  
2. UHF-Power adjustment 
  Display: U Pow,ççç  Adjust point: RE (Rotary Encoder) 
Adjust the UHF-Power to 480mW at the TX condition.   
Frequency: 435.03MHz (C7E) 
Frequency: 445.03MHz (C7T) 
  
3. VHF-Power adjustment 
Display: v Pow,ççç Adjust point: RE 
Adjust the VHF-Power to 480mW at the TX condition....

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10. VHF-SQL adjustment 
SQL MIN level Adjustment 
Display: SqL vL        Adjust point: [V/M] key 
Input the 145.07MHz of -11dBu which modulation is 3.5kHz, and press the [V/M] key. Check the 
BEEP sound. 
  
SQL MAX level Adjustment 
Display: SqL vH        Adjust point: [V/M] key 
Input the 145.07MHz of -3dBu which modulation is 3.5kHz, and press the [V/M] key. Check the 
BEEP sound. 
  
11. VHF S-meter adjustment 
S meter 1 level Adjustment. 
Display: S vL      Adjust point: [V/M] key 
    Input the...

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15. WFM S-meter adjustment 
S-meter 1 level Adjustment 
Display: S wL        Adjust point: [V/M] key 
Input 5dBu which modulation is 22.5kHz, and press the [V/M] key. 
Check the BEEP sound. 
Frequency: 88.7MHz 
  
S meter 5 level Adjustment 
Display: S wH        Adjust point: [V/M] key 
Input 20dBu which modulation is 22.5kHz, and press the [V/M] key. 
Check the BEEP sound. 
  
16. Low Battery Display Setting 
Display: bAtt        Adjust point: [V/M] key 
Set power supply voltage to 3.7V.   
After...

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PC Board View 
  
MAIN Side A 
  
  
  
  
  
  
  
  
  
  
  
  
  




 






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 MAIN Side B 
  
  
  
  
  
  
  
  
  
  
  

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