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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
[email protected]
1 2 3 4

STANDBY PRESET RDS CENTER STEREO
VCC
D4 D5 D3 D2 D1
LED LED LED LED LED

D D

R10 R11 R12 R13 R14
VCC 1K3 4K7 4K7 4K7 4K7


C2 C1 U2 R17
100N 10u 16V HEF4094BP NC
1 4
STR Q1
2 5
D Q2
3 6
CLK Q3
15 7
VCC OE Q4
14
C3 Q5
R18 13
Q6
MRS25 12
100N Q7
11
Q8
9
QS
10
C QS C
VCC


P1
1 DISPLAY PCB
2 File Name
3 CON5 CON8
4
1
2
3
4
5
6




3
2
1
5
6
VCC VCC
7
8
9
10 IR-RECEIVER
11 CON7 IR2
12 CON6 3
1 GND
2
3
4
5
6
13
1
2
3
4
5
6




14 1
VOUT
15 C9
B B
16 2
VCC
VCC
16PIN 10u 16V
R16 R15
VCC
10K 10R



R1 R2 R3 R4 R5 R6 R7 R8
1K05 820R 953R 1K1 1K33 1K6 1K96 2K49
SW1 SW5 SW2 SW3 SW6 SW7 SW9
4
3
2
1



4
3
2
1



4
3
2
1



4
3
2
1



4
3
2
1




4
3
2
1



4
3
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1




Title
A A

Size Number Revision
UP DOWN STORE DISPLAY PRESET IF/BLEND/MONO STANDBY
A4
Date: 25-Jun-2003 Sheet of
File: D:\My Files\underlag produktion\t21\EM1201 Frontpanel\EM1201-02.DDB
Drawn By:
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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