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Roberts RecordR, Service Manual, Page: 1 / 25

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Roberts RecordR Service Manual Download Page 1

 

 

 

 

 

 

 

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 

 

Summary of Contents for RecordR

Page 1: ...ll 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 Semiconduct...

Page 2: ...ev 1KHz with 20KHz LPF R O 56 46 dB Stereo separation 1KHz 75KHz Dev Ear OUT 3mW 32 30 22 dB Current Consumption Battery 6V 180 230 mA Am Suppression 1mV 32 26 dB 100 200 Hz Audio fidelity 75kHz dev 5...

Page 3: ...2B 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 tunning tune 13F 98 95 dBm Max input Signal Without pop...

Page 4: ...ery 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...

Page 5: ...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 S...

Page 6: ...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 8 3W Power_Amp EAR JACK Lo...

Page 7: ...ALL PCB TOP VIEW 7...

Page 8: ...ALL PCB BOTTOM VIEW 8...

Page 9: ...WRING DIAGRAM 9...

Page 10: ...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...

Page 11: ...LED3 1150200 CH Ferrite Bead C 2 BD8 BD9 1150251 CH BEAD 600R 3216 1 BD10 1150311 CH BEAD 1K 1608 5 BD1 BD2 BD3 BD11 BD13 1150481 CH BEAD 100R 1608 4 BD12 BD5 BD6 BD7 11629K1 3 FIXED COIL 22uHK 6 x6 5...

Page 12: ...8 C1 C5 C10 C13 C15 C17 C19 C31 C34 C37 C39 C42 C43 C44 C45 C46 C51 C56 C57 C80 C85 C102 C103 C106 C108 C111 C127 C134 C140 C143 C144 C146 C151 C300 C301 C83 C135 C136 5410556 CH CC 105Z 16V F C 5 C2...

Page 13: ...R92 61301272 CH RD 2K7J 0603 2 R33 R37 61301273 CH RD 27KJ 0603 6 R42 R67 R68 R71 R74 R75 61301274 CH RD 270KJ 0603 1 R85 61301302 CH RD 3KJ 0603 1 R104 61301332 CH RD 3K3J 0603 3 R18 R19 R167 613013...

Page 14: ...4mm 1 PG LED 3Y N2B 21 2500T800010 PCB SUPPORT 7mm 2 PG MCD2 7 22 29S05206002 SCREW JMPW 2 6 6 NI 1 ANT 23 29S09990010 SCREW PTP 1 4 4 NI 5 A4 523 39 SHIELDING CASE 24 29S10104002 SCREW PTP 2x4 NI 7 R...

Page 15: ...15...

Page 16: ...IC CIRCUIT BLOCK DIAGRAM 1 IC1 TC4013BFN 2 IC2 IC8 UTCM2100 16...

Page 17: ...3 IC3 TPA2005D1DRBR 4 IC4 S 8550AA M5T1G 17...

Page 18: ...5 IC5 S 80840CNMA 6 IC6 SCA108TAP 18...

Page 19: ...7 IC7 PT2308 19...

Page 20: ...8 IC9 UTC4052L 20...

Page 21: ...ansistors B E C C E B 2SA1576 2SB772 2SC1623 2SC4081 E B C C G D S BTB1424AM3 LSN42 E Emitter C Collector B Base S Source G Gate D Drain Diodes C C A A C A C A MM4148 FM5817 A C A C A A C BZV55B3V0 BA...

Page 22: ...2 0 0 0 0 2 0 0 0 0 O 3 27 3 27 3 27 3 27 3 2 31 2 31 2 31 2 31 3 5 29 5 29 5 29 5 29 G 0 0 0 0 4 2 31 2 31 2 31 2 31 4 3 29 3 29 3 29 3 29 5 2 58 2 58 2 58 2 58 5 0 60 0 60 0 60 0 60 6 5 30 5 30 5 3...

Page 23: ...0 0 0 A5 1 57 1 57 1 57 1 57 6 3 18 3 18 3 18 3 18 27 0 0 0 0 A6 0 0 0 0 7 0 0 0 0 28 0 0 0 0 A7 0 0 0 0 8 1 20 1 20 1 20 1 20 29 0 0 0 0 A8 3 29 3 29 3 29 3 29 9 0 0 0 0 30 0 0 0 0 A9 0 0 0 0 10 0 0...

Page 24: ...0 62 0 62 Q3 C 7 37 7 37 7 37 7 37 Q11 C 0 0 0 0 Q19 C 0 0 0 0 E 5 31 5 31 5 31 5 31 E 7 42 7 42 7 42 7 42 E 4 57 4 57 4 57 4 57 B 5 27 5 27 5 27 5 27 B 7 35 7 35 7 35 7 35 B 5 24 5 24 5 24 5 24 Q4 C...

Page 25: ...A 3 3V3IN 4 DGND 1 3V3RFIN 17 LCD_RS 20 BACKLIGHT 7 ROT1_B 10 LCD6 12 LCD4 15 LCD1 I2C_SCL_S 2 RFGND 5 IR 22 GPIO0 24 GPIO1 ROT2_B 25 GPIO2 RX 27 DGND 29 GPIO5 30 GPIO6 TX 32 I2C_SDA_M 34 GPIO7 35 AGN...

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