Alinco DJ-C7E Bedienungsanleitung

DJ – C7 T / E Service Manual CONTENTSS SPECIFICATIONS General…..……………………………..…….……Transmitter…….……………………..……………Receiver….………………………………..………

10 SEMICONDUCTOR DATAJRC2070*****876543211) NJM2070M (XA0210) Audio Power Amplifier1. NC2. + INPUT3. - INPUT4. GND5. GND6. OUTPUT7. V+8. NC2) TC4W53

11 587643214. GND1. Output 12. Inverting Input 13. Non-inverting Input 15. Non-inverting Input 26. Inverting Input 27. Output 28. V+2904JRC***5) NJM

12 1234511) BD4930FVE (XA1009) 3.0V Voltage DetectorFL****1. VOUT2. GND (Substrate)3. N.C.4. GND5. VDDC2H1234561. INPUT2. GND3. GND4. OUTPUT5. GND6.

13 312H70*7.0V +/- 2.5% output1. Vss2. Lx3. Vout15A01*******312 456789101112131415164. VCC5. Do6. GND7. LD8. fin9. Clock10. Data11. LE12. FC13. NC14

14 1. GND2. LV3. SW24. SW15. VCC6. EXT7. CEL8. CS***438B8756432143215 1. Non-inverting Input2. VSS5. VDD3. Inverting Input4. OutputSC15) TA75S51FU (

15 16) Transistor, Diode and LED Outline Drawings Top View DAN235EXD0320MA2S357XD0337MA2S304XD0343 XD03441SV311 1SV279

16 17) LCD Connection (EL0056 A48A002X) SEGMENT COMMON SEG0SEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG11SEG12SEG13SEG

17 EXPLODED VIEW 1) Front View

18 2) Rear View

19 FG0374 LCD RUBBER C64 CU3515 Chip C. GRM36CH220J50PTFM0232 LCD FRAME C67 CU3547 Chip C. GRM36B103K16PTST0082 LCD HOLDER DJC7 C68 CU3523 Chip C. G

2 SPECIFICATIONS General Type DJ – C7T DJ-C7E VHF 144.000 – 147.995MHz 144.000 – 145.995MHz Transmitter Range UHF 420.000 – 449.995MHz 430

20 C141 CU3531 Chip C. GRM36B471K50PT D8 XD0381 Chip Diode MA27077C142 CU3531 Chip C. GRM36B471K50PT D9 XD0364 Chip Diode 1SV279-TPH3C143 CU3506 Chi

21 L27 QC0592 Chip Inductor LQW1608A47NJ00T1 R13 RK3530 Chip R. 1005 1/16W 220 OHM JL28 QC0718 Chip Inductor LQW1608AR33J00T1 R14 RK3550 Chip R. 100

22 R91 RK3574 Chip R. 1005 1/16W 1.0M OHMJ R167 RK3550 Chip R. 1005 1/16W 10K OHM JR92 RK3574 Chip R. 1005 1/16W 1.0M OHMJ R168 RK3542 Chip R. 1005

23 R324 RK3538 Chip R. 1005 1/16W 1.0K OHMJR325 RK3538 Chip R. 1005 1/16W 1.0K OHMJR326 RK3559 Chip R. 1005 1/16W 56K OHM JR327 RK3538 Chip R. 1005

24 ADJUSTMENT 1) Required Test Equipment The following items are required to adjust radio parameters. 1. Regulated Power Supply Supply

25 2) Entering and Releasing the Adjustment Mode The DJ-C7 does not require a serviceperson to manipulate the components on the printed-circuit boar

26 Set power supply voltage to 6.0V. 1. Reference frequency adjustment Display: FrEq, Adjust point: TC1 Adjust the TC1 to 435.03MHz (C7E).

27 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.

28 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 pres

29 PC Board View MAIN Side A VCO CASE(TS0174)

3 CIRCUIT DESCRIPTION 1) Reception 1. RX Method [FM/AM] Double Super Heterodyne Method 1st IF: 50.85MHz 2nd IF: 450kHz [WFM] Single Super

30 MAIN Side B X2No gap1mmless than 1mm

31 PC Board View KEY Side A MIC301No gap

32 KEY Side B

33 BATTERY Side A BATTERY Side B PTT Side A & B ROTARY ENCODER Side A & B

34 SCHEMATIC DIAGRAM KEY UNIT BATTERY UNIT 11+161MICGMICTSWAFOTINMOTBSTT3FUNCPOWERSCANBANDV/M0.1C318470KR330C317AXK5F16545YJCN301BAND22KC

35 MAIN UNIT UHFLCDBP1(TONE)CPU(UL)(BP3)(CLONE)SPSP-MIC JACKCHARGE PCBMONIPTT SWV/MBANDSCANPOWERFUNC+++111++++IC9++1++++++++++11++++11654321LC

36 BLOCK DIAGRAM TVIC3MIXD16DAN222MR3MODE SWFMVW/NFL2BPF 10.7MHzP3PV VMODR3P3+B+BVDDPCNTBCHKLCDCPURESWRE1RE2C3SDTLCP3 7V7VC3FL1BPF 5

ALINCO, INC. Head Office: Shin-Dai Building 9th Floor 2-6, 1-Chome, Dojimahama, Kit

4 4. IF [FM/AM] The signal amplified at the 1st IF amplifier Q15 is supplied to pin 24 of IC7 for demodulation. Also the signal of 12.6 MHz from the

5 7. VCO [VHF] VCO in VHF band consists of the Colpitts oscillator. D3, D4 and L11 determine the oscillating frequency, and the signal is oscillat

6 2) Transmitter 1. Microphone Amplifier The microphone amplifier IC301 has 2 operational amplifiers. The voice is converted into the electric sig

7 3) M38268MCL069GP (XA1023) CPU Terminal Connection (TOP VIEW) 1234567891011121314151617181920212223242526272829

8 No. Terminal Signal I/O Description 1 P67/AN7 BP1 I Band plan 1 2 P66/AN6 BCHK I Battery detection input 3 P65/AN5 PCNT 0 Battery dete

9 No. Terminal Signal I/O Description 51 P13/SEG37 W/NC O Wide / Narrow SW output 52 P12/SEG36 FMC O FM SW output 53 P11/SEG35 T3C O