T21 Tuner Service Manual

1. Circuit Diagrams

2. Technical Specifications Note, Primare T30 is Similar.

Confidential ! This document is not allowed to show for third part without written permission from Primare Systems AB. This document is subject to change without notice. Author: Bjorn Holmqvist Primare Systems AB bjorn@primare.net

1 2 3 4

A

B

C

D

4321

D

C

B

A Title

Number RevisionSize

A4

Date: 25-Jun-2003 Sheet of File: D:\My Files\underlag produktion\t21\EM1201 Frontpanel\EM1201-02.DDBDrawn By:

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P1

16PIN

1234

SW1

1234

SW5

1234

SW2

1234

SW3

1234

SW6

1234

SW71234

SW9

R1

1K05

R2

820R

R3

953R

R4

1K1

R5

1K33

R6

1K6

R7

1K96

R8

2K49

STR1

D2

CLK3

OE15

Q1 4

Q2 5

Q3 6

Q4 7

Q5 14

Q6 13

Q7 12

Q8 11

QS 9

QS 10

U2HEF4094BP

D4LED

D5LED

D3LED

D2LED

D1LED

R101K3

R114K7

R124K7

R134K7

R144K7

R17NC

VCC

STANDBY PRESET RDS CENTER STEREO

VCC

1 2 3 4 5 6CON5

1 2 3 4 5 6

CON7

1 2 3 4 5 6

CON6

123

CON8

VCC VCC

VCC

UP DOWN STORE DISPLAY PRESET IF/BLEND/MONO STANDBY

VCC2

VOUT1

GND3IR2

R15

10R

C9

10u 16VR16

10KVCC

IR-RECEIVER

VCC

C2100N

C110u 16V

VCC

R18MRS25

C3

100N

DISPLAY PCBFile Name

Technical Specifications Tuning range (50 kHz steps): 87,5 -108,0 MHz Tuning range Japan (50 kHz steps): 75,5 - 90,5 MHz Usable Sensivity Mono: 0,9 uV, 75 DIN Usable Sensivity Stereo: 20 uV, 75 DIN Capture Ratio: 2,0 dB Image Rejection Ratio: 100 dB Signal-to-noise Ratio Mono: 76 dB Signal-to-noise Ratio Stereo: 70 dB Alternate Channel Attenuation: 90 dB, IHF AM Supression Ratio: 50 dB Subcarrier Product Rejection: 76 dB Total Harmonic Distortion Mono: 0,05% (Wide) Total Harmonic Distortion Stereo: 0,15% (Wide) Frequency Response: 20 Hz - 15 kHz +0,3/-0,8 dB Stereo Separation: 43 dB at 1 kHz (Wide), 40 dB at 70 Hz - 10 kHz Power consumption: Stand by < 7W Output Voltage: 0,775 V Output Impedance: 600R Muting Level: 18 dBf, 2,2 uV, 75R Output Impedance: 75R