Alinco DR-235 TMkIII Service Manual
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Alinco DR-235 TMkIII Service Manual

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D R -
2
3
S e r v i c e M a n u a l
C O N T E N T S
GENERAL.........................................................
TRANSMITTER................................................
RECEIVER........................................................
1) Receiver System DR-235................................
2) Transmitter System DR-235............................
3) PLL Synthesizer Circuit DR-235......................
4) CPU and Peripheral Circuit..............................
5) Power Supply Circuit.......................................
6) M38268MCA075GP (XA1130).........................
1) NJM7808FA (XA0102).....................................
2) TC4S66F (XA0115)..........................................
3) AN8010M (XA0119).........................................
4) TC4W53FU(XA0348)......................................
5) TA31136FN (XA0404)......................................
6) LA4425A (XA0410 )..........................................
7) BR24L32FJ (XA0604Z)................... ................
8) L88MS05TLL (XA0675)....................................
9) S-816A50AMC (XA0925).................................
10) LM2904PWR (XA1103)...................................
11) LM2902PWR (XA1106)...................................
12) MB15E07SR (XA1107).....................................
13) S-80845CLNB (XA1120).................................
14) BU4052BCFV (XA1229).................................
15) S-AV40 (XA1230).............................................
17) LCD Connection (TTR3626UPFDHN)............
1) LCD Assembly..................................................
2) Top and Front View..........................................
3) Bottom View......................................................
All manuals and user guides at all-guides.com
T M
k I I I
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7-9
10
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10
11
11
12
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13
14
14
15
16
17
18
19
20
CPU Unit................................................... 21,22
MAIN Unit................................................ 22-25
Mechanical Parts.....................................
Packing Parts...........................................
ACCESSORIES......................................
TNC (EJ41U)............................................
TNC (EJ41U) Packing Parts...................
1) Adjustment Spot.....................................
4) RX Test Specification.............................
5) TX Test Specification.............................
5) TNC Unit Side A (UP0402) (option)......
6) TNC Unit Side B (UP0402) (option).....
SCHEMATIC DIAGRAM
1) CPU Unit DR-235...................................
2) MAIN Unit DR-235..................................
3) TNC Unit (option)....................................
BLOCK DIAGRAM
1) DR-235....................................................
A U
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I N C

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  • Page 1: Table Of Contents

    All manuals and user guides at all-guides.com D R - k I I I S e r v i c e M a n u a l C O N T E N T S PARTS LIST S P E C IF IC A T IO N S GENERAL............

  • Page 2: Specifications

    All manuals and user guides at all-guides.com SPECIFICATIONS ■ General Frequency coverage DR-235 216.000 ~ 279.995MHz ( RX ) TMklll 222.000 - 224.995MHz ( TX ) Operating mode FM 16K0F3E ( Wide mode ) 8K50F3E ( Narrow mode ) Frequency resolution 5 , 8.33 , 10 , 12.5 , 15 , 20 , 25 , 30 , 50 kHz Number of memory Channels...

  • Page 3: C Ir C U It D Is C R E T Io N

    All manuals and user guides at all-guides.com CIRCUIT DESCRIPTION 1 ) R e c e i v e r S y s t e m D R - 2 3 5 The receiver system is a double superheterodyne system with a 30.85 MHz first IF and a 455 kHz second IF.
  • Page 4 All manuals and user guides at all-guides.com 5. Squelch Circuit The detected output which is outputted from the pin 9 of IC108 is inputted to pin 8 of IC108 after it was been amplified by 10120:A and it is outputted from pin 14 after the noise component was been eliminated from the composed band pass filter in the built in amplifier of the IC.

  • Page 5: Pll Synthesizer Circuit Dr-235

    All manuals and user guides at all-guides.com 3) PLL Synthesizer Circuit DR- 235 1. PLL The dividing ratio is obtained by sending data from the CPU (IC1) to pin 10 and sending clock pulses to pin 9 of the PLL IC (IC116). The oscillated signal from the VCO is amplified by the buffer (Q134 and Q135) and input to pin 8 of IC116.

  • Page 6: Power Supply Circuit

    All manuals and user guides at all-guides.com 4. S (Signal) Meter Circuit The DC potential of pin 12 of iC108 is input to pin 1 of the CPU (IC1), converted from an analog to a digital signal, and displayed as the S-meter signal on the LCD.
  • Page 7 All manuals and user guides at all-guides.com < GO <SÎ C/O o o o o > < c ^ c ^ c o c o c / 5 c < o < / > o o c ^ o o m m m <...
  • Page 8 All manuals and user guides at all-guides.com Terminal Signal Description P67/AN7 S-meter input P66/AN6 Noise level input for squelch P65/AN5 Battery voltage input P64/AN4 CTCSS tone input / DCS code input P63/SCLK22/AN3 Band plan 1 P62/SCLK21/AN2 Band plan 2 P61/SOUT2/AN1 DCSW DCS signal mute P60/SIN2/AN0...
  • Page 9 All manuals and user guides at all-guides.com Terminal Signal Description P13/SEG37 DOWN Mic down input P12/SEG36 Digital unit detect P11/SEG35 Scramble IC ready signal / PTT input for 9600bps P10/SEG34 Mic up input P07/SEG33 P06/SEG32 P05/SEG31 P04/SEG30 P03/SEG29 P02/SEG28 P01/SEG27 P00/S EG26 P37/SEG25 P36/SEG24...

  • Page 10: Semiconductor Data

    All manuals and user guides at all-guides.com SEMICONDUCTOR DATA 1 ) N J M 7 8 0 8 F A ( X A 0 1 0 2 ) 8V (1A) Voltage Regulator 1. INPUT 7808A J R C ****** 2. COMMON 3.

  • Page 11: Ta31136Fn (Xa0404)

    All manuals and user guides at all-guides.com 5) TA31136FN (XA0404) Narrow Band FM IF IC 1. OSCIN It 1 5 1 4 1 3 1 2 1 1 1 0 9 2. OSC OUT 3. MIX OUT 4. Vcc 5. IF IN 6.

  • Page 12: L88Ms05Tll (Xa0675)

    All manuals and user guides at all-guides.com 8) L88MS05TLL (XA0675) 5V (500mA) Voltage Regulator with On/Off Function I------------ 1 1. Vin 2. STB 3. GND 4. Cn 5. Vout 1 2 3 4 5 G N D 9 ) S - 8 1 6 A 5 0 A M C ( X A 0 9 2 5 ) External Transistor Type 5V Voltage Regulator with On/Off Function 1.

  • Page 13: Mb15E07Sr (Xa1107)

    All manuals and user guides at all-guides.com 12) MB15E07SR (XA1107) PLL Synthesizer 1 6 1 5 1 4 1 3 1 2 1 1 1 0 9 1. OSC IN 9. Clock 10. Data 2. N. C. 3. Vp 11. LE 12.

  • Page 14: S-80845Clnb (Xa1120)

    All manuals and user guides at all-guides.com 13) S-80845CLNB (XA1120) 4.5V Voltage Detector 1. Vout 2. Vin 3. NC 4. GND 1 4 ) B U 4 0 5 2 B F V ( X A 1 2 2 9 ) Analog Multiplexer / De-multiplexer Y O (T if] V D D...

  • Page 15: S-Av40 (Xa1230)

    All manuals and user guides at all-guides.com 15) S-AV40 (XA1230) 222 ~ 225MHz 30W RF Power Module B LO C K DIAG RAM G H b ® R F Input (Pin) (D Gate Voltage (VGG), Power Control ® Drain Voltage (VDD), Battery (D R F Output (Pout) ©...

  • Page 16: Transistor, Diode And Led Outline Drawing

    All manuals and user guides at all-guides.com 1 6 ) T r a n s i s t o r , D i o d e a n d L E D O u t l i n e D r a w i n g Top View M I 407 R N 731V...
  • Page 17 All manuals and user guides at all-guides.com...
  • Page 18 All manuals and user guides at all-guides.com Í C O M 3 C O M 2 C 0 M 1 COMO...

  • Page 19: Exploded View

    All manuals and user guides at all-guides.com EXPLODED VIEW 1) LCD Assembly FF0017 ST0064...

  • Page 20: Top And Front View

    All manuals and user guides at all-guides.com 2) Top and Front View A A 0 0 5 0 DP0185 ‘ NK0072 KZ01D5 NK0073...

  • Page 21: Bottom View

    All manuals and user guides at all-guides.com 3 ) B o t t o m V i e w AA0050...

  • Page 22: Parts List Cpu Unit

    All manuals and user guides at all-guides.com PARTS LIST CPU Unit Ref No Part No. Description Parts Name Qty. Ref No. Part No. Description Parts Name Qty. CU3554 Chip C. GRM155B11A104KA01D RK3538 Chip R. ERJ2GEJ102X ERJ2GEJ103X CU3554 Chip C. GRM155B11A104KA01D RK3550 Chip R.
  • Page 23 All manuals and user guides at all-guides.com Ref No. Part No. Description Parts Name Part No. Description Parts Name Qty. Qtv. Ref No FP0034 020 4 CU4008 Chip C. GRM31M2C2H7R0DV01L MIC SPACER DR110 C205 CU3035 Chip C. C1608JB1H102KT-NS FP0234 MIC SPACER A DR 135 16ME1 OSWB+TS-ALC ST0064 LCD HOLDER DR135...
  • Page 24 All manuals and user guides at all-guides.com Parts Name Qty. Ref No. Part No. Description Parts Name Qty. Ref No. Part No. Description GRM155B11H102KA01D IC108 XA0404 TA31136FNG(EL) C304 CU3535 Chip C. GRM155B11C103KA01D IC109 XA0115 TC4S66F{TE85R,F) C305 CU3547 Chip C. S-AV40(ALI,Q) 200MHZ C306 CU3554 Chip C.
  • Page 25 All manuals and user guides at all-guides.com Parts Name Qty. Ref No Part No. Description Parts Name Qty. R ef No. Part No. Description ERJ2GEJ152X R229 RK3555 Chip R. ERJ2GEJ273X R114 RK3540 Chip R. ERJ2GEJ472X R115 RK3549 Chip R. ERJ2GEJ822X R230 RK3546 Chip R.

  • Page 26: Mechanical Parts

    All manuals and user guides at all-guides.com Qty. Ref No. Part No. Description Parts Name Ref No. Part No. Description Parts Name Qtv. LCD PANEL DR235MK3 R330 RK3562 Chip R. ERJ2GEJ104X DP0185 LCD Panel ERJ2GEJ102X BLIND CLOTH DR110 R331 RK3538 Chip R.

  • Page 27: Tnc (Ej41U)

    All manuals and user guides at all-guides.com TNC (EJ41U) Part No. Description Parts Name Qty. Part No. Description Parts Name Ref No. Ref No. Qtv. MCR03EZPJ102 ED0006 Battery BR2032-1F2 RK3038 Chip R. BAT1 CS 0210 RK3038 Chip R. MCR03EZPJ102 Chip tantalum TMCMB0J156MTRF Chip R.

  • Page 28: Tnc (Ej41U) Packing Parts

    All manuals and user guides at all-guides.com TNC (EJ41U) Packing Parts Ref No. Part No. Description Parts Name Qty. FDD001 Floppy-Disc FLOPPY-DISC FF0034 VELCRO VELCRO B FG0040 Cushion SPEAKER CUSHION DR41 HK0487 Package ITEM CARTON EJ41U HP0029 Plastic bag E.BAG 5X100X100 HP0040 Plastic bag 8X130X200...

  • Page 29: Dr-235 Adjustment

    All manuals and user guides at all-guides.com DR-235 ADJUSTMENT 1 ) A d j u s t m e n t S p o t Power Supply Voltage 13.8V Output of SSG is all EMF indication. If without instruction, WIDE mode. If without instruction, SSG output is MOD 1 KHz WIDE DEV 3.5KHz/DEV, NARROW DEV 1.75KHz/DEV.

  • Page 30: Vco And Rx Adjustment Specification

    All manuals and user guides at all-guides.com 2) VCO and RX Adjustment Specification ITEM CONDITION UNIT ADJ. SPOT ADJUSTING MRTHOD 223.50MHz MAIN VR110 Adjustment Adjust so that Tx Frequency becomes Frequency within 223.50MHz+/- 100Hz 224.99MHz MAIN L123 Adjust so that PD voltage becomes 2.2V Adjustment 224.99MHz MAIN...

  • Page 31: Rx Test Specification

    All manuals and user guides at all-guides.com 4) RX Test Specification TEST ITEM CONDITION ADJ. STANDARD TEST STANDARD NOTE RX Signal 216.05MHz Less than -7dBu Less than -6dBu 12dB SINAD Sensitivity 223.50MHz Less than -8dBu Less than -7dBu 250.05MHz Less than -3dBu Less than -2dBu 223.50MHz Less than -8dBu...

  • Page 32: Tx Test Specification

    All manuals and user guides at all-guides.com 5) TX Test Specification TEST ITEM CONDITION ADJ. STANDARD TEST STANDARD NOTE Tx Output 222.00MHz 25 +/- 3W Hl POWER 223.50MHz 25 +/- 1W 25 +/- 3W 224.95MHz 25 +/- 3W Tx Output 223.50MHz 10+/- 1W 10 +/- 2W...
  • Page 33 All manuals and user guides at all-guides.com 1) DR-235 « n j t «...

  • Page 34: Pc Board View

    All manuals and user guides at all-guides.com PC BOARD VIEW 1 ) C P U U n i t S I D E A D R - 2 3 5 ( U P 0 5 7 9 ) 2 ) C P U U n i t S I D E B D R - 2 3 5 ( U P 0 5 7 9 ) Bonding...

  • Page 35: Main Unit Side A Dr-235 (Up0579)

    All manuals and user guides at all-guides.com 3) MAIN Unit Side A DR-235 (UP0579)

  • Page 36: Main Unit Side B Dr-235 (Up0579)

    All manuals and user guides at all-guides.com 4) MAIN Unit Side B DR-235 (UP0579)
  • Page 37 All manuals and user guides at all-guides.com “0 G N D é C C TS C R X D C D C D C D S R C R TS C TXD C D TR ' K F N — lirMul- 0 "D VELCRO A 0 0 3 3...
  • Page 38 All manuals and user guides at all-guides.com ¡sS,g3fi*23|g§|||Sg O O O O O O O O O O O O O O O O jl I O O O O O O O O O O O O Q O O O | i 5 I“*»...

  • Page 39: Main Unit Dr-235

    All manuals and user guides at all-guides.com 2) MAIN Unit DR-235...

  • Page 40: Tnc Unit (Option)

    All manuals and user guides at all-guides.com TNC Unit OPTION Unit (EJ41U) P IT DATA CONECT...

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