Jvc MCTV 7 E Service Manual

Page 1

NIVICD

No. 2212

SERVICE MANUAL

MODEL MCT-V7E/5109

DIMENSIONS:

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System

Transistors

Diodes

FET

IC's

Ceramic filter

[FM receiver section]
Frequency range

IF amplifier stage
Sensitivity

Signal to noise ratio
Capture ratio
Selectivity

Image Rejection

IF Rejection
Spurious Rejection
AM suppression ratio
Frequency response
Harmonic distortion
Separation

SCA suppression ratio
Frequency drift

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AM/FM HI-Fl SI
H~5,,L§, W--17, 137,712"

AM FM III-Fl Stereo tuner
24
27

1
2
4 ('8 elements)

88 108MHz

»l transistors and 2ICs
l.2_uV ('IHI")

Better than 65 dB

Less than 0.8

Better than 70dB {QSMHzi
Better than 90(18

Better than 90dB

Better than 100 dB

Better than 55 dB

20 to lSOOOHz (:2I dB)
Less than 0.3% (98MH2)
Better than 38 dB (1 KHZ)
Better than 25 dB (IOKIIz)
~50 dB

Less than 001.3%

VICTOR COMPANY OF JAPAN,

R

-O

l UN 2'?

SPECIFICATIONS

WEIGHT:

Output lcve.
Antenna terminals

Remarks

[AM receiver section]
Ferquency range

IF amplifier stages
Sensitivity (IOOOKHZJ
Selectivity

Image Rejection
Harmonic distortion
Signal to noise ratio
Output

Antenna terminals

Remarks

Power requirements
Power consumption
Power outlet

LIMITED.

16.5 lbs.

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Variable: More than l\'
759 unbalanced

3009 balanced

AMFM tuning meter. FM
fine tuning meter. FM stereo
indicator. Muting Level

control. MPX hi-blend.

535~ 1605Klrlz

2 stages (with 1 CF)
15/:V (S N "20dB)

25dB (:thKIIz)

Better than 60 dB

1.5%

Better than 50 dB

More than 1.0V

External antenna terminal
Ferrite bar antenna
Tuning meter

100. 120. 220, 2-10V 50 or 60Hz
20W

Power switch operation

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Page 2

Adjustments :

1. When a faultis'found to be within the front end, replace the front end unit in principle. When the front end unit is
replacad, merely adjust the front-end IF cores.

2. When a transistor is found to be faulty, replace it and merely adjust the IFT and coil immediately preceding and fol.
lowing the transistor. (Especially note not to rotate the core more than one turn.)

3. When a coil or IFT is replaced, adjust the nevi.v coil or IF'I only.

4. When a part other than those mentioned above is replaced, only performance check is needed and no adjustment is
required in principle.

FM receiver section :

T201 T202 CF20, T203 % E E
@ ® ® @ R232 R141 R142

FRONT END

0 0 000 W b
O Q C) Q T L...

TEQO 00000 33% g Q

J- - u- u- -u- "L

Fig. 1

Parts On TFM-QMGUA AM, FM IF, MPX Circuit Board.

Tm AM RF transformer Rm For AM tuning meter adjustment
Tm AM IF transformer Rm For FM tuning meter adjustment
T20, AM IF transformer Rm For muting level adjustment

T204 AM OSC transformer CF 20. 455KHz ceramic filter

Tm FM DET transformer Lam lQKHz trap coil

Tm Muting transformer L302 SCA trap coil

T30, MPX 19KHz coil LPFm 38KHz trap coil

T303 MPX 38KHz coil LPFm 38KHz trap coil

MCT-V7E/5109 - 2 -