Roberts ecologic 2 Service Manual
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Roberts ecologic 2 Service Manual

Fm rds / dab digital portable radio
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Table of Contents

DAB DIGITAL PORTABLE RADIO
ecologic 2
FM RDS /
CONTENTS
2-3
4
5
6
7
8
9
10-14
15-17
18
19
20-24
25
26-28
29

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Summary of Contents for Roberts ecologic 2

  • Page 1: Table Of Contents

    2 FM RDS / DAB DIGITAL PORTABLE RADIO CONTENTS Specification Block Diagram Main PCB Top View Main PCB Bottom View Power PCB Top View Power PCB Bottom View Wiring Diagram Troubleshooting Flow Chart 10-14 Electrical Parts List 15-17 Mechanical Parts List...

  • Page 2: Specification

    Specification FM. ELECTRICAL PERFORMANCE Model: Temp: 25℃ R.H.: 75 % Date: 2008/07/15 Ver.：A Page：1/2 Brand: ROBERTS ecologic 2(UK) Test Item Condition Value Test no. Unit Input Output freq Nom. Lim 87.5 Tuning Range S/N=6dB 90MHz Max. Sensitivity S/N=6dB 98MHz 106MHz...
  • Page 3 Specification DAB(BAND Ⅲ) ELECTRICAL PERFORMANCE Model: Temp: 25℃ R.H.: 75 % Date: 2008/07/15 A Page：2/2 Brand: ROBERTS Ver. ： ecologic 2(UK) Limit Test no. Test Item Condition Normal Unit RF Freq. Range Fc : -70 dBm (Wanted channel) Fi : ≧ -25 dBm FM 75KHz/dev.

  • Page 4: Block Diagram

    BLOCK DIAGRAM...

  • Page 5: Main Pcb Top View

    MAIN PCB TOP VIEW...

  • Page 6: Main Pcb Bottom View

    MAIN PCB BOTTOM VIEW...

  • Page 7: Power Pcb Top View

    POWER PCB TOP VIEW...

  • Page 8: Power Pcb Bottom View

    POWER PCB BOTTOM VIEW...

  • Page 9: Wiring Diagram

    WIRING DIAGRAM...

  • Page 10: Troubleshooting Flow Chart

    TROUBLESHOOTING FLOW CHART Power can not be turned on Check whether the Pin1 Check whether the Pin14 Check Adaptor or of IC1 is High Level. of IC1 is VCC. Bettery. Check D300, D304, Check SW1 and IC1. CON300 and W1. Check whether the Q10 Check Q7, Q8, Q10 and "C"...
  • Page 11 Rechargeable Bettery can not be charging Check SW300 is switch to "Rechargeable". Check whether the Pin1 Check whether the Pin14 Check Adaptor vlotage is of IC1 is Low Level, Pin2 of IC1 is VCC. above 10.5V. of IC1 is High Level. Check D300, CON300 and Check IC1.
  • Page 12 Check TMR300, R309, R310 and D302 are solder Check whether the Pin3 Check IC300. of IC300 is High Level. Measure R305 two Check IC301, R305, R311, terminal is 1.23V ~ 1.26V. D301 and D302. Check whether the Check whether the Pin2 Check IC300 and R323.
  • Page 13 Speaker or Earphone no sound Check Pin1 of IC5 is Check whether the L8 is above 6V and check IC5, Q25, L8, L9 and D6. Check Module is working OK and do not plug earphone. Measure whether the Pin29 and Pin30 of Check Module.
  • Page 14 Measure whether the Check whether the Pin6 speaker terminal has Check IC4 and B1. of IC4 is 5V. sound wave. Check whether the Pin1 Check Q17, JK301, R135, Check Speaker. of IC4 is High Level. W1 and CON300. Check IC4, L10 and L11.

  • Page 15: Electrical Parts List

    ELECTRICAL PARTS LIST ecologic 2 PART NO. DESCRIPTION Q'TY REMARK 1012072-A CH IC NJM2100M DMP8 IC 2, 1013620-A CH IC TC 4013BFN SOL14 IC 1, 1014530-A CH IC LM4809 IC 3, 1014580-A CH IC MC33340 IC 300, 1014780-A CH IC LD1117AL-ADJ...
  • Page 16 ELECTRICAL PARTS LIST ecologic 2 PART NO. DESCRIPTION Q'TY REMARK 4410752T0HA EL 107M 35V 8x7-T 105 C 6, 4422712T0HA EL 227M 6.3V 6.3x7-T 105 C 60,69,70, 4422733T0HA EL 227M 16V 8x9-T 105 C 56,57,301, 4410814T0HA EL 108M 6.3V 8x11-T 105...
  • Page 17 ELECTRICAL PARTS LIST ecologic 2 PART NO. DESCRIPTION Q'TY REMARK ,135,317, 61301680-A CH RD 68J-0603 R 106,107, 61301682-A CH RD 6K8J-0603 R 120, 61301683-A CH RD 68KJ-0603 R 150,152, 61301822-A CH RD 8K2J-0603 R 121, 61301823-A CH RD 82KJ-0603 R 119,...

  • Page 18: Mechanical Parts List

    MECHANICAL PARTS LIST ecologic 2 Ref no PART NO. DESCRIPTION Q'TY APP./DWG NO. REMARK 20Q4000-A SPEAKER HOLDER A4-RD49-02 20Q4012-A RUBBER KEY HOLDER A4-RD49-03 20Q4020-A POWER KNOB HOLDER A4-RD49-04 20Q4060-A SPEAKER SPACER SUPPORT A4-RD49-11 20Q4080-A TDCD SUPPORT A4-RD49-13 品固EDG-10A 20Q4090-A LED HOLDER...

  • Page 20: Ic Circuit Block Diagram

    IC CIRCUIT BLOCK DIAGRAM IC1 － TC4013BFN IC2 － NJM2100M...
  • Page 21 IC3 － LM4809 IC4 － AD5165A-H...
  • Page 22 IC5 － S-8520A50MC-AWJT2G IC6 － S-8520A33MC...
  • Page 23 IC8 － S-8550AA IC300 － MC33340...
  • Page 24 IC301 － LD1117AL...

  • Page 25: Semiconductor Lead Identifications

    SEMICONDUCTOR LEAD IDENTIFICATIONS Transistors 2SA812 2SB772 2SJ621 2SA1576 2SC1623 2SC4081 2SD1048 DTC144EN3 2SA1020Y (E:Emitter C:Collector B:Base) Diodes RLS4148 ZENER 5V6 BAV70N3 ZENER 6V8 1N4002 ZENER 3V6 BAS16 IN5817 (A:Anode C:Cathode)

  • Page 26: Ic And Transistor Voltage Chart

    IC AND TRANSISTOR VOLTAGE CHART MODULE 1.26 1.26 2.71 2.65 3.27 3.27 3.31 3.31 3.29 3.29 1.65 1.65 3.28 3.28 4.49 4.49 2.60 2.60 3.32 3.32 3.07 3.46 2.72 2.88 2.88 5.69 5.69 3.31 3.31 3.32 3.32 3.32 3.32 3.32 3.32 2.98 3.19...
  • Page 27 IC4 － AD5165A-H IC5 － S-8520A50MC IC6 － S-8520A33MC 4.16 4.16 9.12 9.12 9.05 9.05 2.55 2.55 4.96 4.96 3.34 3.34 2.55 2.55 7.04 7.04 6.49 6.49 0.39 0.39 9.12 9.12 9.05 9.05 4.95 4.95 0.35 0.35 IC8 － S-8550AA IC300 －...
  • Page 28 Transistor 0.75 0.75 0.57 0.57 0.12 0.12 0.56 0.56 5.19 5.19 4.16 4.16 5.17 5.17 10.60 10.60 7.12 7.12 5.17 5.17 11.26 11.26 9.12 9.12 0.71 0.71 9.19 9.19 5.06 5.06 2.70 2.70 6.47 6.47 9.20 9.20 3.30 3.30 9.05 9.05 3.44 3.44...

  • Page 29: Schematic Diagram

    SCHEMATIC DIAGRAM...

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