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
3
3
3
9
9
9
EMF
dBu
Usable Sensitivity S/N=30dB 90MHz
98MHz
106MHz
12
12
12
18
18
18
EMF
dBu
Min. output 60 dBu 1.0 3.0
mV
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
dB
Stereo separation 1KHz
75KHz/Dev. Ear OUT
3mW/16Ω38 32
dB
Current Consumption
Back Light OFF 90 130
mA
Am. Suppression (1mV) R.O. 52 46
dB
150Hz +7
±2
dB
Audio fidelity
1KHz=0dB, VR=R.O
(W/pre emphasis 50uS) 10KHz +4
±2
dB
Output Power (75KHz dev.)
400Hz,10% THD SP OUT
8Ω1 0.8
W
Output Power (75KHz dev.)
1KHz, Volume=MAX Ear OUT
16Ω5+5 3+3
mW
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
2
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
CH
RF Freq. Range Max 13F
CH
Far-off Selectivity
Fc : -70 dBm (Wanted channel)
Fi : ≧-25 dBm
FM 75KHz/dev. Fc ±5MHz
(Unwanted channel)
(Measurement to EN50248)
10A 55 45
dB
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
3
+5V
R
R
L
R
FM
+3.3V
+5V
VCC
L
Q
MUTE
+5V
L
MUTE
+5V
L
Memory
DAB
+3.3V
+1.2V
+9V VCC
+9V
LCM LAMP Control
R
Battery +9V
CHARGER LOOP
SW2 - SW12
Key Map
ANT
LCD DATA
+3.3V
+3.3V
+9V
1N5817
D304
SW300 Q305
Charging
Voltage
detect
EQ
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
4
MAIN PCB TOP VIEW
5
MAIN PCB BOTTOM VIEW
6
POWER PCB TOP VIEW
7
POWER PCB BOTTOM VIEW
8
WIRING DIAGRAM
9
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
No
Y
es
No
No
No
No
No
No
Y
es
Y
es
Y
es
Y
es
Y
es
Y
es
Y
es
Y
es
10
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