Roberts RecordR User manual

RecordR
DAB/FM RDS
DIGITAL PORTABLE RADIO
CONTENTS
Specification 2-5
Block Diagram 6
All PCB Top View 7
All PCB Bottom View 8
Wiring Diagram 9
Troubleshooting Flow Chart 10
Electrical Parts List 11-13
Mechanical Parts List 14
Exploded Views 15
IC Circuit Block Diagram 16-20
Semiconductor Lead Identifications 21
IC and Transistor Voltage Chart 22-24
Schematic Diagram 25

Specification
FM. ELECTRICAL PERFORMANCE
Model ：RecordR Brand：ROBERTS Temp：25∘CR.H. ：
75% Date：2011/10/11 Ver.：A Page：1/4
Condition Value Test no.
Test Item 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
10 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%) R.O. 26 32 EMF dBu
S/N Ratio
(22.5KHz/Dev)1KHz
with 20KHz LPF R.O. 56 46 dB
Stereo separation 1KHz
75KHz/Dev. Ear OUT 3mW/32Ω30 22 dB
Current Consumption
Battery6V 180 230 mA
Am. Suppression (1mV) 32 26 dB
100 200 Hz
Audio fidelity
75kHz/dev. 50uS
(-3dB W/pre emphasis)
R.O.
10K 8K Hz
High 9 +3 dB
TONE10KHz
75kHz/dev.50uS Low R.O. -15 +3 dB
Output Power
(75KHz dev.)
1kHz,10% THD
SP OUT
8Ω1 0.8 W
Output Power
(75KHz dev.)
1KHz, Volume=MAX
Ear OUT
32Ω5+5 3+3 mW
T. H. D. (75KHz dev.)
60 dBu
R.O. 1 3 %
Over load capacity 10%T.H.D
98MHz
120 106 EMF dBu
Low Battery 60 dBu 3.9 4.3 V
Supply Voltage:
*Adaptor 100-240V 50Hz 7.5V/0.8A
*Battery6V R.O. :50mW Load: 8 Ohm Modulation: 1K Hz Mod./22.5KHz Deviation
W/ 20KHz LPF
Remark：
Approved by
Released/Tested by
陳盧生
2

Specification
DAB(BAND Ⅲ ) ELECTRICAL PERFORMANCE
Model ：RecordR Bran：ROBERTS Temp：25∘CR.H.：75% Date：2011/10/11 Ver：A Page：2/4
Test no.
Test Item Condition CH Nom. Lim 1. 2. 3. Unit
Min 5A CH
RF Freq. Range Max 13F
CH
Adjacent Channel
Selectivity
Fc : -70 dBm (Wanted channel)
Fi :≧-38 dBm
(Unwanted channel)
(Measurement to EN50248)
10A 32 dB
Far-off Selectivity Fc : -70 dBm (Wanted channel)
Fi : ≧-25 dBm
FM 75Khz/dev. Fc±5MHz
(Unwanted channel)
(Measurement to EN50248)
10A 53 45 dB
5A -91 -88 dBm
10A -91 -88 dBm
12B -93 -90 dBm
Sensitivity
Without pop noise
13F -93 -90
dBm
5A -97 -94 dBm
10A -97 -94 dBm
12B -98 -95 dBm
Acquisition Selectivity (Measurement to EN50248)
會自動重新 tunning
以tune 的到電台信號為準 13F -98 -95
dBm
Max. input Signal Without pop noise 10A 0 -10 dBm
S/N Ratio
W/ 20KHz LPF DAB S.G. = - 70 dBm 10A 60 50 dB
T.H.D.
W/ 20KHz LPF Input : -10dBm 10A 1 3
%
Channel Balance Input : -10dBm 10A 1 ±2 dB
Current Consumption
Battery 6V
Battery 6V
R.O.
DAB S.G. = - 70 dBm 12B 170 210
mA
Supply Voltage:
*Adaptor 100-240V 50Hz 7.5V/0.8A
*Battery 6V 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：
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Released/Tested by
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3

Specification
SD MP3 ELECTRICAL PERFORMANCE
Model ：RecordR Brand：ROBERTS Temp：25∘CR.H.：75% Date：2011/10/11 Ver：A Page：3/4
Condition Value Test no.
Test Item Input Output freq Nom. Lim 1. 2. 3. Unit
Playing
Support playing format MP3/WMA
SD capacity 16MB~8GB
Sample rate 16k/32/64/128/192k bps
Reading time 8GB <10 Sec
100Hz 7 +-2 dB
Playing
freq response Test 1 kHz MP3128kbps 0dB OUT=R.O=0dB 10K 2 +-2 dB
S/N (with A Filter）1 kHz MP3 0dB 128kbps R.O 56 dB
0.5 1 %
THD of playing MP3 1kHz 128kbps 0dB R.O Vrms
Power consumption
Battery 6V playing SD only(1K) R.O 200 mA
Output power 1 kHz MP3 0dB 128kbps 10%T. H.D. 1 0.8 W
Record and playing
RC/P gain difference Record FM DEV 22.5kHz/ 400Hz R.O
measure playing output level -3 +-3 dB
R/P THD Record FM DEV 75kHz/ 1KHz R.O 1 3 %
S/N Record FM DEV 22.5kHz/ 1KHz R.O 50 dB
Power consumption
Battery 6V recording+FM R.O 250 mA
Rewind and playing
RW/P gain difference Rewind FM DEV 22.5kHz/ 400Hz R.O
measure playing output level 0 +-3 dB
RW/P THD Record FM DEV 75kHz/ 1KHz R.O 1 3 %
S/N Record FM DEV 22.5kHz/ 1KHz R.O 50 dB
Power consumption
Battery 6V rewinding+FM R.O 250 mA
Supply Voltage:
*Adaptor 100-240V 50Hz 7.5V/0.8A
*Battery 6V R.O.: 50mW Load: 8Ohm Modulation: TONE set at 0
Remark：
Approved by
Released/Tested by
陳盧生
4

Specification
AUX IN ELECTRICAL PERFORMANCE
Model :RecordR Brand：ROBERTS Temp：25∘CR.H.：75% Date：2011/10/11 Ver：A Page：4/4
Condition Value Test No.
Test Item Input Output Freq. Nom. Lim. 1. 2. 3. Unit
Output Power AUX IN= 0.5Vrms /400Hz THD = 10%
( TEST : R/L SHORT ) 1 0.8 W
AUX IN
Dynamic Range
Output=R.0 , Adjust_V.R
THD=3%
AUX IN=400Hz 2 1 V
Input Sensitivity
AUX IX=400Hz
Volume = Max ,
OUT=1W(2.828Vrms)
( TEST : R/L SHORT )
320 ±50 mVrms
Distortion AUX IN= Input Sensitivity
/400Hz
Output =R.O. 0.8 2 %
Min. Output AUX IN= Input Sensitivity
/400Hz
Volume = Min 0.5 1.5 mVrms
S/N RATIO AUX IN= Input Sensitivity Output =R.O.
( TEST : 400Hz & GND) 60 50 dB
Supply Voltage:
*Adaptor 100-240V 50Hz 7.5V / 1.6A;
*Battery 6V R.O.: 50mW Load: 8 Ohm Modulation TONE set at 0
Note : Test add 20 Hz ~ 20kHz Filter LPF
( ) The head of product
( ) Finished Product
( ) Semi-finished Product
( ) New Model
( ) Client Spot Check
( ) Routine Spot Check
( ) Engineering Modify
( ) Business Sample
Approved by
Released/Tested by
陳盧生
5

Power_LED
Q9 on
SD1
IC5
1.2V
P8 P1,3
DAB
D7
P1,12
P10
P4 P1
P3
P5
Q16
Q2 Q3
D302
IC7
BATT 6V
Q8
JK301
LCD
LCM
Q15
L/R
IC1
Q19,21
D12 D11 D10
IC8
Mute
IC6
of Record save
Module
P28 P34 P24
LED 2 ,3
Backlight
SD JACK
D3,8,13
Q13,7,6
3.3V
P6
P26 ADP.DET
IC9
P36,38 Control
P5,14
P40
P8 AUX DET
D9
SW1
Power
P14
Power Control
Low Batt of Power_off
VR2
VR1
Control
JK303
Alarm on
or
Power off
D12
Mute
Pre_Amp
IC2
Mute
D4
8Ω/ 3W
Power_Amp
EAR JACK
Low Batt DET
Q10,11 Switch
Q1,Q22,Q23
5.1V
IC4 , L3
L/R
BAND
PA2
Q4 ,5 , 15
L/R
Volume
L/RTONE
AUX JACK
Q12,14
Mute
L/R
EAR_Amp
L/R
Pre_Amp
Q18,20
DC JACK
JK302
Power on
D301
5.1V ON
KEY Mattry
Switch
IC6 , L2
P7,20,30
Module
SW 2 - 12
BLOCK DIAGRAM
6

ALL PCB TOP VIEW
7

ALL PCB BOTTOM VIEW
8

WRING DIAGRAM
9

TROUBLESHOOTING FLOW CHART
Power can not be turned on
Yes No
Check whether the Radio
is in Standby(DC IN)
Check whether the Pin1
of IC1 is VCC.
Check whether the Pin14
of IC1 is VCC.
No Yes
Yes
Check whether the Pin6 of
GRYO-1128Module is 3.0V Check Q10,Q11
Check IC1,SW1,Q16and
D15.
Yes
No Yes
Check whether the Q13
“C” is VCC.
Check Q6, Q7, Q13, D3,
D7,D8 and D13.
Check D301,W1,CN300
And DC JACK
Yes
Yes
No
Check whether the Pin5 of
IC4 is 3.3V.
Check Pin1 of IC4 is VCC
and check L3, R99 and
R100. Check Adaptor
Yes
No No
Check whether the Pin2 of
IC6 is 1.2V.
Check Pin5 of IC6 is 0.7V
up.
Check Pin6 of IC6 is VCC
and check L4, R109 and
R110.
Yes
No
Check whether the Pin8 of
GRYO-1128Module is 1.2V
and Pin1
,
3 is 3.3V.
Yes
Check the MODULE.
10