Sangean DPR-25+ User manual

DPR-25

DAB+FM RDS+MW DIGTAL RECEVIER

CONTENTS

Specification ………………………………………………………………………………………………………2-5

Block Diagram ………………………………………………………………………………………………………6

Alignment Instructions…………………………………………………………………………….………………7-11

Test Points Disgram…………………………………………………………………………….……….……………12

Main PCB Top View…………………………………………………………………………….……….……………13

Main PCB Bottom View.………………………………………………………………………….……..………..…..14

LCD PCB Top View……………………………………………………………………………….………….……15

LCD PCB Bottom View……………………………………………………………………………………………16

PCB Top View…………………………………………………………………………….……….……………17

PCB Bottom View…………………………………………………………………………….……….……………18

Wiring Diagram..….………………………………………….………………….….……………..……….19

Troubleshooting Flow Chart..….………………………………………….……………….….……………..……20-21

Electrical Parts List………………………………………………………………………………....……………22-25

Mechanical Parts List……………………………………………………………………….……….…………….26-27

Exploded Views.…………………………………………………………………………….…………….……………28

IC Circuit Block Diagram…………………………………………..…………….………………………………29-38

IC and Transistor Voltage Chart….……………………………..…………………………….…………………39-43

Semiconductor Lead Identifications……………………………………………………………………..……..…44

MAIN Schematic Diagram……………………………………………………………………………………………45

LCD Schematic Diagram………………………………………………………………..……………………..… …46

SPECIFICATION

FM. ELECTRICAL PERFORMANCE

Model: DPR-25 Brand:SANGEN Temp: °C R.H.: % Date: 2005/9/2

Condition Value Test no.

Test Item Input Output freq Nom. Lim 1. 2. Unit

Min 87.5

Tuning Range S/N=6dB Max 108

MHz

Intermediate freq. S/N=6dB 10.7 ±0.05 MHz

Max. Sensitivity S/N=6dB 90MHz

98MHz

106MHz

18 dBu

Usable Sensitivity S/N=30dB 90MHz

98MHz

106MHz

24 dBu

Image Rejection S/N=6dB 106MHz 24 18 dB

Stereo Ind Sens. S/N=6dB 106MHz 22 26 dB

I.F. Rejection S/N=6dB 90MHz 60 dB

3db Limiting 80dBu 18 24 dBu

Min. output 1.5 3 mV

Auto Scan 22 28 dBu

S/N (1mV) 46 40 dB

Current Consumption R. O. 160 180 mA

Am. Suppression (1mV) 32 26 dB

Stereo Separation(lkHz) 26 20 dB

100 200 Hz

Audio fidelity

75kHz/or 50kHz

(-3dB W/pre emphasis)

60dBu

10K 8K Hz

Output Power(75KHz dev.) 10%T.H.D. 1000 700 mW

T. H. D. (75KHz dev.) 1 3 %

Over load capacity 10%T. H.D.

98MHz

100 90 dBu

Calibration S/N=6dBu 90MHz

98MHz

106MHz KHz

Lowest Batt. Volt. 60dBu 98MHz 6.3 6.7 V

Supply Voltage: DC 9V R.O.: 50mW Load: 8 Ohm Modulation: 1KHz Mod./22.5KHz Dev.

Remark:

( )首件產品 ( )客戶抽測:

( )成品 ( )例行抽測 ( )業務樣品:

( )半成品( )新機種 ( )工程變更:

Approved by Released/Tested by

SPECIFICATION.

MW. ELECTRICAL PERFORMANCE

Model: DPR-25 Brand: SANGEAN Temp: °C R.H.: % Date: 2005/9/2

Condition Value Test no.

Test Item Input Output freq Nom. Lim 1. 2. Unit

Min 522

Tuning Range Max 1710

KHz

Intermediate freq. S/N=6dB Min 450 ±2 KHz

Max. Sensitivity S/N=6dB 603KHz

999KHz

1404KHz

dBu/m

Usable Sensitivity S/N=20dB 603KHz

999KHz

1404KHz

dBu/m

Image Rejection S/N=6dB 1404KHz 36 30 dB

I.F. Rejection S/N=6dB 603KHz 50 40 dB

Selectivity(±10KHz) S/N=6dB 32 26 dB

Bandwidth(-6dB) S/N=6dB 6-11 KHz

T. H. D. 74dBu/m 2 4 %

Lowest Batt. Volt. 74dBu/m 6.3 6.7 V

Hum Modulation 100dBu/m dB

Auto. Scan. Stop. Sens. 56 62 dBu/m

Current Consumption 74dBu/m 160 180 mA

Tone Action (3KHz) 74dBu/m dB

100 200 Hz

Freq. Response

(-6dB) 74dBu/m 2500 1800 Hz

Output Power 80% Mod. 10%T.H.D. 1000 700 mW

Over load capacity 80%mod. 10%T. H.D. 100 90 dBu/m

A. G. C. F. O. M. 100dBu/m

999KHz

46 40 dB

S/N Ration 74dBu/m 40 34 dB

Whistle Modulation 74dBu/m 2IF/3IF 15 %

Supply Voltage: DC 9 V R.O.: 50mW Load: 8 Ohm Modulation: 1KHz/30% Mod

Remark:

( )首件產品 ( )客戶抽測:

( )成品 ( )例行抽測 ( )業務樣品:

( )半成品( )新機種 ( )工程變更:

Approved by Released/Tested by

SPECIFICATION.

DAB(BAND

Ⅲ)

ELECTRICAL PERFORMANCE

Model: DPR-25 Brand: SANGEAN Temp: °C R.H.: % Date: 2005/9/2

Test no.

Test Item Condition CH Limit Typical 1. 2.

Unit

Min 5A CH

RF Freq. Range Max 13F CH

acent Channel

Selectivity

Fc : -70 dBm (Wanted channel)

Fi : ≧-38 dBm

(Unwantedchannel)

(Measurement to EN50248)

10A 30 33 dB

Far-off Selectivity

Fc : -70 dBm (Wanted channel)

Fi : ≧-25 dBm

FM 75Khz/dev. Fc ±5MHz

(Unwantedchannel)

(Measurement to EN50248)

10A 43 53 dB

5A -87 -90 dBm

10A -88 -91 dBm

12B -88 -91 dBm

Sensitivity

Without pop noise

13F -87 -90 dBm

S/N Ratio Without pop noise 10A 50 56 dB

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

5A -90 -92 dBm

10A -92 -94 dBm

12B -92 -94 dBm

Acquisition

Selectivity (Measurement to EN50248)

13F -90 -92 dBm

Output Power

1kHz 10%T.H.D. 1000 700 mW

T. H. D. 1 3 %

Low battery

Indication on 10A 6.7 6.7 V

125H

Z +4 +7 dB

FREQ

RESPONSE AT CHANNEL 10A CHANGE

SERVICE AF 8KHZ +4 +7 dB

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

( )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

SPECIFICTION.

AUX-IN ELECTRICAL PERFORMANCE

Model: DPR-25 Brand: ALL Temp: 25 ℃R. H. : 75 % Date: 2005/9/2

Condition Value Test No.

Test Item Input Output Freq. Nom. Lim. 1. 2.

Unit

Output Power AUX IN=0.5V/1KHz

THD=10% 1 0.7 W

AUX IN

Dynamic Range

Output=R.0 (ATT=0)

THD=3%

AUX IN=100Hz 1 05 V

I/S (Input Sensitivity) AUX IX=100Hz，ATT=0

OUT= 0.5W

Volume=MAX 130 ±30 mV

DISTORTION AUX IN =I/S 1KHz

OUT=R.O 0.1 0.4 %

MIN OUTPUT AUX IN =I/S 1KHz

Volume=MIN 0.7 2

S/N RATIO AUX IN =I/S 1KHz&GND

OUT=R.O 65 55 dB

100 10 6

Frequency Response AUX

IN=0.5V/1KHz

OUT=50mW=0dB 10K 8 4

AUX IN =I/S 1KHz 130 ±30

LINE OUT LEVEL

(REC OUT IMPD=47K) FM DEV=22.5K@1KHz 150/ ±30 mV

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

1KHz/30% Mod

Remark:

( )首件產品 ( )客戶抽測:

( )成品 ( )例行抽測 ( )業務樣品:

( )半成品( )新機種 ( )工程變更:

Approved by Released/Tested by

KEY

DC JACK

9-14V

Q22

Q19 9V

REG.

PT2386

DAB

Q15

Q17

REG.

Q10

Q27

REG

AUX

TC4066

Tuner

TA2149

Q23

Pre-AMP

FLIP-FLIP

TC4013

u-COM

TMP87EP26F

3DSW LINE

OUT

DC / DC

3.3V

RDS

BU1924

DC / DC

15V

Main-AMP

AN7142

POWKEY

PLL & LPF

TC9257

BLOCK DIAGRAM

1. ALIGNMENT FOR AM/LW IF

a. Required Instruments:

AM IF Sweep Generator with scope

b. Alignment Procedure

Mode Adjustment Procedure

(1) Press the power button to turn on the radio.

(2) Connect the input terminal of AM IF sweep generator in series with a resistor of 1.2KΩ

to the TP1 and TP2.

(3) Connect the RF output terminal of AM IF sweep generator to another test point TP5.

(4) Connect a 100μF electrolytic capacitor to test point TP2 and TP4.

(5) Adjust T1 to have a max. output with a marker frequency of 450 kHz on the sweep

AM T1

scope.

c. Instrument Connection

TP4 TP2

100uF

TP1 RF TP5

TP2

OUT

450KHz Marker

1.2KΩ2.2KΩ

AM IF Sweep Generator

ALIGNMENT INSTRUCTIONS

2. ALIGNMENT FOR AM/LW TUNING VOLTAGE RANGE

a. Required Instruments:

DVM

b. Alignment Procedure

Mode Adjustment Procedure

(1) Turn on the radio.

(2) Connect the probe of DVM to the test point TP1 and TP2.

(3) Tune the AM frequency to 522 kHz.

(4) Adjust L3 to have a reading of 1.2 ±0.04V.

(5) Tune the AM frequency to 1629 kHz.

TC1

(6) Adjust TC1 to have a reading of 7.6 ±0.3V.

c. Instrument Connection

TC1 L3

TP2

TP1

DVM

3. ALIGNMENT FOR FM TUNING VOLTAGE

a. Required Instruments

DVM

b. Alignment Procedure

Mode Adjustment Procedure

(1) Turn on the radio.

(2) Connect the probe of DVM to the TP1 and TP2

(3) Tune the FM frequency to 108MHz.

FM L4

(4) Adjust L4 to have a reading of 8.2V ±0.3V.

c. Instrument Connection

TP2

TP1

DVM

4. ALIGNMENT FOR AM/LW SENSITIVITY

a. Required Instruments

AM Signal Generator

SSVM

b. Alignment Procedure

Mode Adjustment Procedure

(1) Turn on the radio.

(2) Connect a SSVM to the speaker TP7 and TP8 terminals.

(3) Connect an AM signal generator together with standard loop dummy antenna and

feed 30% modulated signal to the AM ferrite bar antenna L12.

(4) Tune the generator frequency to 1404 kHz.

(5) Tune the AM frequency to 1404 kHz and adjust TC3 to have a max reading on

SSVM.

(6) Return the generator frequency to 603 kHz.

(7) Tune the AM frequency to 603 kHz and adjust L12 to have a max reading on

SSVM.

TC3

L12

(8) Repeat (4) to (7) as necessary to minimize tracking error.

c. Instrument Connection

L12

TC3

60 cm

The radio is located

perpendicularly to

the Loop Antenna

Loop Antenna

AM Signal Generator

TP8

TP7

DVM

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