Yamaha ct 7000

Page 1

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CONTENTS

SPECIFICATIONS
EXTERNAL VIEWS

FRONT PANEL .......... ... ...
REAR PANEL (us. & CANADIAN MODELS) ....................................... 2
REAR PANEL (EUROPEAN MODEL) ........................

INTERNAL VIEWS

TOP VIEW ................................................................
BOTTOM VIEW ............................................................. 4
CIRCUIT DESCRIPTION ............................ ... ... ... ....
PARTIAL DISASSEMBLY .......................................................... 14
DIAL MECHANISM .............................................................. 17
MEASUREMENT AND ADJUSTMENT ............... ... ... .,. ....
PRINTED CIRCUIT BOARD ........................................................ 22
BLOCK DIAGRAM ............................................................... 26

OVERALL SCHEMATIC DIAGRAM ............ ,- ..
PARTIAL CHANGES MADE ACCORDING TO DESTINATION

PARTS LIST ................................................................... 31
SPECIFICATIONS
Tuning Flange Total Havmanic Distortion Sub»Carrier Suppression
88-108MHZ (antenna leuel: 1mVl Over 7on3
Sensitivity (mnnn) Mono Muting Override Signal Level
IHF Normal: better than 2.5uv IH F I400H1;75kHz Dev.) 330w

Wide. better than 3.2uv
DIN (40kHz Del/J S/N ZGdE)
Normal: better than 1.5uV
Wide: better than 2.5uV
Sensitiwty (stares)
DIN (AOKHZ Dam; S/N 46GB)
,5ouv
Image Frequency Rejection
Over 120118
IF Rejection Over 120115
Spurious Response Rejection
Over 120dB
AM Rejection
IHF Over SDdB
Capture Ratio
lmV Normal: better than 1.3dB
Wide: better than 1.0dE
lOuV Normal: better than ZtUdB
Wide: better than 3 (MB
lOOmV Normal; better than 1.0dB
Wide: better than 1.0dB
Selectivity
IHF (75kHZ Dev.)
Normal: over BOdE
Wide: over 18dE
DIN (13CIOH2; 40kH2 Dev.) iEODkHZ
Nurmal; over BSCIE
Wide:over10dB
Normal: over QOdB
Wide: over 35dB
Signal/Noise Ratio (mono)
IHF [75kH2 Deve)
Over 78dB
DIN IaOkHZ Dev.)
Over 72dB
Signal/Noise Ratio (stereo)
IH F I75kHz Dev.)
Over 75dB
DIN (40kHz Dev.)
Over BQdE

Normal: less than 0.08%
Wide: less than 0 08%
DIN l1kH1; 4DkHZ Dev.)
Normal: less than 0.08%
Wide: Less than 0.08%
IHF (5010,000H2; 75kHz Dev.)
Normal: less than 0.3%
r Wide: less than 0.15%
DIN (SD-10,000Hz; 4UkHz Dev.)
Normal: less than 0.3%
Wide: less than 0.15%
Stereo
lHF I4OOH2; 75KHZ Dev.)
Normal: less than 0.08%
Wide: less than 0.08%
DIN IlkHz: 40KHZ Devel
Nurmal: less than 003%
Wide: less than 0.08%
IHF (SO-10,000HZ; 75k Hz Dev.)
Normal: less than 0.5%
Wide: less than 0.2%
DIN I50710,000H2; 4DkHz Dev.)
Normal: less than 05%
Wide: less than 0.2%
Steren Separation
IHF i4ODHz; 75kHz Dev,)
Normal 81 Wide: 50dB
DIN I1kHz:40kHz Dem)
Nurrnal & wide: 50dB
IHF (5010,000Hz; 75kHz Dev.)
Normal: 35dB
Wide: 40dB
DIN (SO-10.000Hz; 4DkHz Dev.)
Normal: 35dB
Wide: 40d 8
Frequency Response
50-10,000HZ
20.3dEl
30-15,!)00Hz
+0.5dB, 71,0dE

Stereo Level arsouv
Auto Blend Level
i-loouv, llzlmv

GENERAL

Transistors 108

FETs l2 (dualrgate MOS: 3,
junction: 9)

Diodes 33

Zener Diodes 9

le 7

thrElemenl Ceramic Filter
Four-Element Ceramic Filter
Tonlement Ceramic Block Filters
Headphone Output

4.16!)
Fixed Output

775mv
Variable Output

2V ~ 70mV variable
Antenna Input Impedance

3000 (balanced),

750 (unbalanced)

Puwer Source

CTVOIJO

110, 117, 130, 220, 240V,

50/60Hz
Power Consumption

23w (illum. off: 13W)
AC outlet 1 (unswltclled, 500w)
Cabinet American walnut

Front Panel Hairline brushed aluminum

Dimensions (WXHXD)
436 x144 x 352mm
l17.2" x 5.7" x139")
Weight 13kg (28.6 lbs.)