Roberts Ecologic 2 User manual

ecologic 2

FM RDS /

DAB DIGITAL PORTABLE RADIO

CONTENTS

Specification 2-3

Block Diagram 4

Main PCB Top View 5

Main PCB Bottom View 6

Power PCB Top View 7

Power PCB Bottom View 8

Wiring Diagram 9

Troubleshooting Flow Chart 10-14

Electrical Parts List 15-17

Mechanical Parts List 18

Exploded Views 19

IC Circuit Block Diagram 20-24

Semiconductor Lead Identifications 25

IC and Transistor Voltage Chart 26-28

Schematic Diagram 29

Specification

FM. ELECTRICAL PERFORMANCE

Model:

ecologic 2(UK) Brand: ROBERTS Temp: 25℃R.H.: 75 % Date: 2008/07/15 Ver.：A Page：1/2

Test Item Condition Value Test no.

Input Output freq Nom. Lim 1. 2. 3. Unit

Min 87.5

Tuning Range S/N=6dB Max 108

MHz

Max. Sensitivity S/N=6dB 90MHz

98MHz

106MHz

EMF

dBu

Usable Sensitivity S/N=30dB 90MHz

98MHz

106MHz

EMF

dBu

Min. output 60 dBu 1.0 3.0

rms

Auto. Scan. Stop. Sens.

(STEREO 45KHz/Dev

Pilot 10%) 28 34

EMF

dBu

Spurious Rejection

EMF

dBu

S/N Ratio

R.O.

52 46

Stereo separation 1KHz

75KHz/Dev. Ear OUT

3mW/16Ω38 32

Current Consumption

Back Light OFF 90 130

Am. Suppression (1mV) R.O. 52 46

150Hz +7

±2

Audio fidelity

1KHz=0dB, VR=R.O

(W/pre emphasis 50uS) 10KHz +4

±2

Output Power (75KHz dev.)

400Hz,10% THD SP OUT

8Ω1 0.8

Output Power (75KHz dev.)

1KHz, Volume=MAX Ear OUT

16Ω5+5 3+3

T. H. D. (75KHz dev.)

60 dBu

R.O. 1 3

Over load capacity 10%T.H.D 120 106

EMF

dBu

Lowest Battery Voltage 60 dBu

98MHz

5.4 6.3 V

Charge current

DC ADAPTOR 12V IN Power off, charging 380 ±80 mA

Supply Voltage: DC 9V R.O.: 50mW Load: 8 Ohm Modulation: 400 Hz Mod. / 22.5KHz Deviation

W/ 20KHz LPF ON

Remark：

Approved by

蔡宇曙 2008/7/15

Released/Tested by

陳奇強 2008/7/15

葉克隆2008/7/15

Specification

DAB(BAND

Ⅲ

) ELECTRICAL PERFORMANCE

Model:

ecologic 2(UK) Brand: ROBERTS Temp: 25℃R.H.: 75 % Date: 2008/07/15 Ver.：APage：2/2

Limit Test no.

Test Item Condition CH Normal 1. 2. 3. Unit

Min 5A

RF Freq. Range Max 13F

Far-off Selectivity

Fc : -70 dBm (Wanted channel)

Fi : ≧-25 dBm

FM 75KHz/dev. Fc ±5MHz

(Unwanted channel)

(Measurement to EN50248)

10A 55 45

5A -95 -92

dBm

10A -95 -92

dBm

12B -96 -93

dBm

Sensitivity Without pop noise

13F -96 -93

dBm

5A -101 -98

dBm

10A -101 -98

dBm

12B -101 -98

dBm

Acquisition Selectivity (Measurement to EN50248)

13F -101 -98

dBm

S/N Ratio

W/ 20KHz LPF ON Without pop noise 10A 56 50 dB

Change service AF=125Hz 10A +10 ±2 dB

Audio fidelity

1KHz=0dB, VR=R.O

W/ 20KHz LPF ON Change service AF=8KHz 10A +1.5 ±2 dB

Max. input Signal Without pop noise 10A 0 -10

dBm

Current Consumption

Back Light OFF Without pop noise 12B 80 120 mA

Supply Voltage: DC 9V R.O. : 50mW Load: 8 Ohm Modulation :1kHz

Channel Freq.( MHz) Channel Freq.( MHz) Channel Freq.( MHz)

5A 174.928 10A 209.936 12B 225.648

13F 239.200 5B 176.640 13E 237.488

Remark：

Approved by

蔡宇曙 2008/7/15

Released/Tested by

陳奇強 2008/7/15

葉克隆2008/7/15

+5V

+3.3V

+5V

VCC

MUTE

+5V

MUTE

+5V

Memory

DAB

+3.3V

+1.2V

+9V VCC

+9V

LCM LAMP Control

Battery +9V

CHARGER LOOP

SW2 - SW12

Key Map

ANT

LCD DATA

+3.3V

+9V

1N5817

D304

SW300 Q305

Charging

Voltage

detect

Pre-AMP

1N4002

D300 Q300,Q301

Q306,Q307 IC300 MC33340

IC301 LD1117AL

Q10,Q7,Q8

+3.3V

Detect Voltage

LCM

LAMP

LCD1

+3.3V

AUDIO R OUT

Temperature

detect

POWER SWITCH

LOOP

IC1 TC4013BFN

IC3 LM4809 IC4 AD5165A

Regulator

+9V

RDS Q4,Q5,Q13

IC8 S-8550AA

Q11,Q12

+1.2V

CON1

FS2025 DAB MODULE

AUDIO L OUT

Q1,D4

LED500

LED501

Q9,SW1

MUTE LOOP MUTE LOOP

8 ohm SPEAKER

Q2,Q3,Q14

Q15,Q6 Q2,Q3,Q14

Q15,Q17

HEADPHONE JACK

LCM

IC6 S-8520A33MC

Q26,D7

+3.3V

CLASS-D

AMP

HEADPHONE

AMP

+12V

ADAPTER

TMR300

LED1

JK301

IC2 NJM2100M

IC5 S-8520A50MC

Q25,D6

+5V

BLOCK DIAGRAM

MAIN PCB TOP VIEW

MAIN PCB BOTTOM VIEW

POWER PCB TOP VIEW

POWER PCB BOTTOM VIEW

WIRING DIAGRAM

Power can not be turned on

Check whether the Pin1

of IC1 is High Level. Check whether the Pin14

of IC1 is VCC. Check Adaptor or

Bettery.

Check SW1 and IC1. Check D300, D304,

CON300 and W1.

Check whether the Q10

"C" is 9V. Check Q7, Q8, Q10 and

D10.

Check whether the L13 is

3.3V.

Check Pin1 of IC6 is

above 4V and check IC6,

Q26, L12, L13, D7 and B6.

Check whether the L8 is

5V.

Check Pin1 of IC5 is

above 6V and check

IC5,Q25, L8, L9 and D6.

Check whether the L15 is

1.2V.

Check Pin1 of IC8 is

above 2V and check IC8,

L14, L15 and B5. Check Pin3 of IC8 is 3.3V.

Check whether the Pin1

of FS2025 Module is 1.2V

and Pin2 is 3.3V. Check Q11 and Q12.

Check the Module.

TROUBLESHOOTING FLOW CHART

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