Equipment information:

Grundig T9000 Tuner
Manufacturer:
Grundig
Model: T9000
Date: 1987
Category: Audio, Video, TV, Multimedia
Group: Tuner
Description:
Information:
                                    Technical Specification

Waveband Coverage

VHF/FM 87,5...108 MHz

AM (MW) 522... 1620 kHz

FM Sensitiflty (75 ft, 40 kHz deviation)

FM Mono: £0,6 jaV (narrow bandwidth)

FM Stereo: £ 24 jiV

FM Limiting

£0,5 |iV for -1 dB

Stereo Switch-over Threshold

Stereo on/off: 4/2,8 ^iV at 98 MHz into 75 ft

Muting Threshold

Muting on/off: 3,2/2,8 |aV at 98 MHz into 75 ft FM Station
Search Threshold Adjustable: 10 fiV min./300 max. (into 75 ft)

FM Signal-to-Nolse Ratio (Unweighted)

In the range 22,5 Hz...15000 Hz, 40 kHz deviation, 1 mV into
75 ft. Rms value (without AGC): Mono > 75 dB; Stereo > 74 dB

FM Signal-to-Nolse Ratio (Weighted)

Measured at 1 mV into 75 ft, 40 kHz deviation.

Rms value to curve "A"(without AGC): Mono > 79 dB; Stereo >
76 dB.

Frequency Response on VHF (FM)

10 Hz -16,8 kHz: £ 3 dB; 30 Hz -15 kHz: £ 1 dB Distortion
Factors

Measured according to DIN 45500 with 1 mV into 75 ft Mono, 1
kHz,40/75 kHz diviation: £0,05/0,1 %

Stereo, 1 kHz, Lor R, with 40/75 kHz deviation: £0,1/0,2%
Dynamic Selectivity

> 65 dB (normal bandwidth); > 83 dB (narrow bandwidth)

(± 300 kHz, referred to 40 kHz deviation, - 30 dB noise)

FM Crosstalk

1 mV aerial voltage, 47,5 kHz total deviation:

1 kHz > 44 dB, measured selectively Output Voltages

(input signal of 1 mV, 1 kHz, 40 kHz deviation)

Adjustable AF output (on the rear):

Adjusting range: approx. 0,2 V -1,7 V (with'centre stop
position at 850 mV ± 2 dB)

Fixed level output (on the front of the unit): approx. 1,7 V
± 2 dB Headphone output (adjustable): 4 V/120 ft

These manuals are available for the above equipment:

Grundig -- T9000 -- Service Manual
File name: Grundig-6798-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 38
Size: 27.74 Mbytes (29082271 Bytes)
Language: english
Revision:
Manual-ID/Number:
Date: December 1987
Quality: Scanned document, reading partly badly, partly not readable.
Upload date:
MD5: cc3157e1233b96e906fead57191eeb4b
ed2kID: 9ccd16bf61c7701fa13fa96ed56aabb7
Downloads: 97 since 25 May 2015
Information:
Contents

1	Technical Specification

2	General Notes

3-4	Disassembly Instructions

5-8	Spare Parts List

9	Instruction notes Circuit Discription:

10-11	- RDS Data

11	- Mains part

11-12	- + 15 V Mains Part

12	- The negative Voltages 12	- Heating for the Display

12	- Suppression of the flashing during the

switching-off

13	- 31V Mains part 13,15	- Synthesizer

14	- Alignment of the reference box 14	- Service (Testmode)

16	- Signal path

16	- Mixer

16,18	- IF amplifier

16,17	- AGC (Automatic gain control)

18	- Bandwidth switching

19	- PUL Demodulator

19	- Self seek evaluation and field strength

indication

19,20	- FM Alignment

20	- AGC Alignment 20	- AM Alignment

20	- Adjustment of the field strength indication

21	- RDS demodulator and alignment

22	- PLL Stereo decoder and alignment

22	- Calibrating tone generator and alignment

22.23	- Computer panel

23.24	- Display

24	- Alignment of the FM fieldstrength indication

25	Alignment layout

26	Connecting diagram of the display 27,28	Discription of
symbols

29-32	Printed circuit boards

33-44	Connecting diagram
Grundig-6798-Manual-Page-1-Picture
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